APOLLO OPERATIONS HANDBOOK EXTRAVEHICULAR … TM-X-69515.pdfAPOLLO OPERATIONS HANDBOOK-EMU FOREWORD This handbook, sections h and 5, of the Apollo Operations Handbook (AOH) series,

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APOLLO

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MSC-01372-2_F

ADMINISTRATION

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00/99 18140

VOLUME 1_

OPERATIONAL PROCEDURES_

ORIGINAL ISSUE MAY 1969

REVISION 1"ff

. ,_ ,,,,,_ _ MANNED SPACECRAFT CENTER_!,_,:,_..,_]y : HOUSTON,TEXAS

13';

JUNE 1971

MOBILITY UNIT

OPERATIONS HANDBOOKEXTRAVEHICULAR

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Manned Spacecraft Center

Crew Systems Division

MSC-01372-2

PROJECT DOCUMENT COVER SHEET

APOLLO OPERATIONS HANDBOOK

EXTRAVEHICULAR MOBILITYUNIT

VOLUME II -- OPERATIONAL PROCEDURES

CSD [OATECS0-A-789-(2) III May 1969

PREPARED BY:

APPROVED:

APPROVED:

APPROVED:

_0 ..r I ¢,

C,,ANCH_/F_//__/_ .L_ -T/_-/

. _Ro6ert E. Smyli_' Chief_ CSD /

NO. OF PAGES ]_6

DATEi

Dct. 69q

3ept 70

June 71

PREPARED BY

J. L._ Gibson I

,i

MSC FORM 15i (REV MAY 67)

R_VI_gQM_;APPROVALS RE¥. LETTER

BRANCH DIVISION PIIOQRAM OFFICE

Rev. T

Rev. IT

Rev. III

c_[h

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HHH

]I

,,e

PI_!Ei:T DOCUMENTCHANGE/REVISION LOGFOE CSD ORIGINATED DOCUMENT

NUMBER,CSD-A-78_(2) III

m jF_

CHG. /NO.

Roy. ILl

AUTHORITYFOR CHANGE

PAGES

AFFECTED

All

BRIEF DESCRIPTION OF CHANGE

Reorganized and rewritten to

accommodate A7LB suit configuration

and the - 7 PLSS configuration

END ITEM/SERIAL NUMBER

AFFECTEO

Apol 1o i_

_TERE_D PAGES T E TYPED & DISTRIBUTED FOR INSERTIONMSC Form 892 (Rev Apr 80)

CSD-A-789-(2) IluAPOLLO OPERATIONS HANDBOOK-EMU

_ection

4.

4.1

4.1.1

4.1.2

4.i.3

4.1.4

4.2

4.2.1

4.2.2

4.2.3

4.2.t,

4.2.5

4.2.6

4.3

4.3.1

4.3.2

4.3.3

4.4

4.5

4.6

4.6.1

4.6.2

4.6.3

4.7

4.7.i

C_T_TS

OPERATIONAL PROCEDURES ..................

PGA DONNING_ DOFFING .................

PGA Donning Procedures Before IV Use ...........

PGA Doffing Procedures After IV Use ...........

PGA Donning Procedures Before EV Use ...........

PGA Doffing Procedures After EV Use ...........

OPS OPERATIONS ......................

OPS Checkout .......................

OPS Donning Prior to Contingency Transfer ........

OPS Donning Before CMP EVA ................

OPS Activation ......................

OPS Deactivation ................... •

OPS Doffing After CMP EVA ................

PLss/oPS DONNING AND DOFFING ...............

PLSS/OPS Donning .....................

PLSS/OPS Doffing in Pressurized Environment .......

PLSS/OPS Doffing in Unpressurized Environment ......

PLSS COMMUNICATIONS CHECK ................

PRESSURE INTEGRITY CHECK .................

PLSS NORMAL OPERATING MODES ...............

PLSS Activation .....................

Wet Sublimatcr Restart ..................

PLSS Deactivation ..................

PLSS RECHARGE AND FEEDWATER R_4OVAL PROCEDURES ......

Battery Replacement ...................

Page

4-1

4-2

4-15

4-20

4-25

4-29

-29

4-29

4-30

4-32

4.-32

4-32

4-33

4-33

4-36

4-_0

4-45

4-47

4-49

4-49

4-50

4-5o

4-52

4-52

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE iii

Section

4.7.2

4.7.3

2.8

4.8.1

4,8,2

.8.3

i_.8.4

4.9

4.9 .i

4.9.2

4.9.3

4.9.4

h.i0

h.lO.l

4.10.2

h.ll

4.ii.i

4.11.2

h.ii.3

4.11.4

4.11.5

.11.6

4.11.7

4.11.8

h.ll.9

4. !i. i0

CSD-A-789-(2) III

APOLLO OPERATIONS HANDBOOK-EMU

Page

Removal of LiOH Cartridge From Stowage Container ..... 4-53

LiOH Cartridge Change .................. h-5h

PURGE VALVE OPERATION .................. 4-56

Activation Procedures for Purge Valve .......... 4-56

Flow Adjustment Procedures ................ 4-56

Shutoff Procedures .................... 4-56

Purge Valve Removal Procedures .............. 4-57

PRESSURE CONTROL VALVE OPERATION ............ 4-58

PCV Installation ..................... 4-58

PCV Activation ...................... 4-58

PCV Deactivation ..................... 4-58

PCV Removal Procedures .................. &-58

EMU INFLIGHT MAINTENANCE ................. 4-59

PGA and LEVA Inflight Examination and Maintenance .... 4-59

Bioinstrumentation Inflight Repair ............ 4-64

MISCELLANEOUS PROCEDURES ................. 4-66

PLSS Gas Trap Activation ................. &-66

Camera Mounting on RCU .................. 4-67

BSLSS Bag to PLSS Donning ................ 4-68

BSLSS Bag to PLSS Doffing ................ 4-68

BSLSS Stowage on LRV ................... 4-68

BSLSS Donning and Activation Procedure .......... 4-69

BSLSS Disconnect Procedure ................ h-69

Donning and Doffing Helmet Shield ............ &-70

Donning and Doffing Neck Dam ............... &-70

Insuit Drinking Device (ISDD) Installation and Use .... h-71

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE iv

CSD-A-789-(2) IIt


Section Psgc_

4.ii.ii OPS Oxygen Usage for Metabolic Makeup --LM and CM .... 4-74

4.11.12 OPS Bleed Down --LM and CM .............. 4-%

5. EMU MALFUNCTION PROCEDURES FOR LUNAR SURFACE EVA ..... 5-1

5. I INTRODUCTION ....................... 5-]

5.2 FORMAT OF MALFUNCTION PROCEDURES ............. 5-1

5.3 MALFUNCTION SYMPTOMS FOR EMU USING

PLSS SV 706100-7 .................... 5-3

q

BASIC DATE May m969 CHANGE DATE June 1971 PAGE v

CSD-A-789-(2) IIIAPOLLO OPERATIONS HANDBOOK-EMU

acfm

AOH

BSLSS

CDR

cfm

CM

CMP

CO_

CSM

CWG

"DES" H20

ECG

ECS

EMU

EV

ISDD

LEVA

FCS

ITMG

IV

IVA

kHz

LCG

LiOH

LM

MSFN

ABBREVIATIONS

actual cubic feet per minute

Apollo Operations Handbook

Buddy Secondary Life Support System

Commander

cubic feet per minute

command module

command module pilot

communications

command/service module

constant wear garment

descent water

electrocardiogram

environmental control system

extravehicular mobility unit

extravehicular

insuit drinking device

lunar extravehicular visor assembly

fecal containment system

integrated thermal micrometeoroid garment

intravehicular

intravehicular activity

kilohertz (thousand cycles per second)

liquid cooling garment

lithium hydroxide

lunar module

Manned Space Flight Network

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE vi

C SD -A-789-(2) it._


OPS

PGA

PHA

PLSS

pos.

POS

press.

psia

psid

psig

PTT

RCU

rcvr

SC

sel.

SSC

SW.

TLSA

TM

UCTA

UTS

vlv

VOX

WMS

xduc e r

xmtr

ZPN

oxygen purge system

pressure garment assembly

pressure helmet assembly

portable life support system

position

primary oxygen system of PLSS

pressure

pounds per square inch absolute

pounds per square inch differential

pounds per square inch gage

push to talk

remote control unit

receiver

spacecraft

selector

space suit communication

switch

torso limb suit assembly

telemetry

urine collection and transfer assembly

urine transfer system

valve

voice operated transmitter

waste management system

transducer

transmitter

impedance pneumograph

BASIC DATE May 1969 CHANGE DATE June 1971 PAGEJ-_-_-

t I E

CSD-A.789-(2) III


AT change in temperature

AP change in pressure

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE viii

,.,

CSD-A-789-(2) III


FOREWORD

This handbook, sections h and 5, of the Apollo Operations Handbook (AOH)

series, is bound separately as Volume II and pertains only to the Extra-

vehicular Mobility Unit (EMU). Volume I of the AOH contains sections l,

2, and 3, and pertains to the description of the EMU.

The operational procedures are written specifically for Apollo J-mission

EMU hardware and will be superseded by a mission-oriented checklist which

is reviewed by Crew Systems Division (CSD) for unique hardware procedures.

Both the operational procedures and the malfunction procedures will be up-dated for the mission.

This handbook is composed of two major sections:

a. Section 4 provides a step-by-step operational procedure for activation

and deactivation of EMU subsystems.

b6 Section 5 provides emergency procedures for critical EMU symptoms and

continuing diagnosis during EVA and post-EVA to determine the EMU

malfunction (to be supplied).

Insuiries concerning this handbook should be addressed to Crew Systems

Division, Systems Engineering Branch, MSC, mail code EC2 or to Crew

Procedures Division, EVA/IVA Procedures Branch, mail code CG3.

8

BASIC DATE May 1969 CHANGE DATE june z971 PAGE i_

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5.1.2

5.1.3

5.l.h

5.1.5

SECTION 5

EMU MALFUNCTION PROCEDURES

FOR LUNAR SURFACE EVA

INTRODUCTION

The malfunction procedures encompass the recognition, diagnosis,

and corrective action for system malfunctions. In most cases,

the crew is alerted to a malfunction condition by indicators

and gages. The malfunction analyses do not contain solutions;

such solutions are found in mission rules. The procedures in

this section cover significant single failures and are not

intended to replace the detailed failure modes-effects analysespublished in other documents.

The malfunction procedures are for use during Apollo missionswhere an EMU having an SV 706100-7 PLSS will be worn. The

procedures have been classified as (1) emergency, (2) EVA,

and (3) post-EVA. (The post-EVA period commences when the

LM cabin pressure reaches 3.5 psia.)

For maximum safety, all emergency procedures should be memorized

so action can be taken immediately when the malfunction occurs.

The EVA procedures do not need to be memorized since they are

provided through voice communications except for steps whichcover EVA procedures for loss of voice communications.

The post-EVA procedures are designed to extract a maximum amount

of information on any observed anomaly since the PLSS/OPS and

associated hardware would not normally be returned to earth

for postflight analysis. The emergency procedures are devised

so that telemetry is not used because telemetry data may not

be available to the crewman. (Telemetry should be employed

to aid the emergency procedures, however, if it is possibleto do so.)

The procedures and remarks are representative of a nominal EMU.

Values sad quantities, which are characteristic of an individual

EMU and which can be established only be testing the actualEMU to be used in the flight, are underlined in each case.

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE 5-1

CSD-A-789-(2) nT


5.2.2

FORMAT OF MALFUNCTION PROCEDURES

MalfUnction procedures are presented in the format of logic-flow

block diagrams. Diagram blocks represent procedural steps.Those blocks outlined with double lines and containing capital-

ized statements indicate system failures. Within blocks_ state-

ments preceded by black dots ( • ) indicate required actions.

The malfunction procedures are presented in three columns headed

SYMPTOM, PROCEDURE, and REM__qKS. A description and use of each

of these columns is as follows:

SYMPTOM The primary purpose of the symptom column

is to give a first indication of the mal-

function as received by either the crew

or telemetry. The possible causes of themalfunction are indicated in this column.

PROCEDURE The procedures column presents a step-by-step

logic-flow diagram of actions and decisionsused to isolate or correct a malfunction

symptom. The remote-event number symbolsare used to reference items to the REMUS

column or to refer to other procedural steps.

REMARKS This column will include the following in-

formation:

a, Amplifying additional remarks related

to the symptom, such as relief valve

vents at ____psid.

b. Amplifying remarks which relate to adecision and/or action items.

C, Explaining resultant system status or

operational capability after a failurehas been identified.

d. Cautioning or warning, as necessary,

to cover conditions that may existbecause of a failure

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE 5-2

CSD-A-789.(2) III


5.3 MALFUNCTION SYMPTOMS FOR _MU USING PLSS SV 706100-7

Symptom Page

EMU 1 - Warning tone ON and low vent flow flag "P"(vent-P) .......................... 5-5

EMU 2 - Warning tone ON and low PGA pressure flag "0"(P_S - "o" ) ......................... 5-7

_u 3 - Warning tone ON and high 02 flow flag "O"

(02-"0") .......................... 5-10

EMU 4 - Warning tone and low feedwater pressure flag "A"

(H20-"A") while using primary feedwater .......... 5-12

EMU 5 - Warning tone and low feedwater pressure flag "A"

(H20-"A") while using auxiliary feedwater ......... 5-14

EMU 6 - Warning tone with all warning flags CLEAR ...... 5-16

EMU 7 - PGA pressure gage <3.7 psid and apparently stableand everything else normal ................. 5-18

_U 8 - PLSS 02 quantity indicator abnormal reading ..... 5-19

EMU 9 - PGA pressure gage >4.0 psid ............. 5-20

EMU i0 - Loss of pump noise ................. 5-21

EMU ii - Inadequate cooling of crewman ............ 5-22

E_fU 12 - EVA-I loses voice from MSFN (EVA-I has

voice from EVA-2) ..................... 5-24

EMU 13 - EVA-1 loses voice from MSFN (EVA-1 does

not receive voice from EVA-2) ............... 5-25

EMU 14 - EVA-1 loses voice from EVA-2 (EVA-1 has

voice from MSFN) ...................... 5-27

EMU 15 - EVA-2 loses voice from MSFN (EVA-2

receives voice from EVA-l) ................. 5-29

EMU 16 - EVA-2 loses voice from MSFN (EVA-2

does not receive voice from EVA-l) ............. 5-30

EMU 17 - EVA-2 loses voice from EVA-1 (EVA-2

has comm. with MSFN) .................... 5-32

EMU 18 - Loss of voice comm. wit_ EVA-l, EVA-2,

or MSFN (two-man EVA) (comm. restoration procedure) .... 5-34

EMU 19 - EVA loses voice from 1/4 ............... 5-35

BASIC DATE May 19_ CHANGE DATE June 1971 PAGE.5-3

CSD-A-789-(2) iT r


Symptom Page

EMU 20 - LM loses voice from EVA ............... 5-37

EMU 21 - GT8168P/GT8268P PGA pressure <3.7 psid and

apparently steady (no warning tone) ........ . .... 5-39

EMU 22 - GT8168P/GT8268P PGA pressure >4.0 psid ....... 5-40

EMU 23 - GT8182P/GT8282P PLSS 02 pressure abnormal(no warning tone) ............. ........ 5-41

_MU 24 - GT8110P/GT8210P feedwater pressure <1.2 psia(no warning tone) while using primary feedwate----r ...... 5-43

EMU 25 - GT8110P/GT8210P feedwater press. <1.2 psia (no

warning tone) while using auxiliary feedwater ....... 5-44

EMU 26 - GTSI54T/GT8254T LCG H20 temperature >50___° F

(with diverter valve in MAX COOLING position and no

warning tone) ....................... 5-45

EMU 27 - GT8i96T/GT8296T LCG H20 AT >ii___° F (maximumdiverter valve position) .................. 5-46

28 - GT8140C/GT8240C PLSS battery current

>3.___OOA(no warning tone) .................. 5-47

EMU 29 - GT8140C/GT8240C PLSS battery current

<2.___3A (no warning tone) .................. 5-49

EMU 30 - GT8141V/GT8241V PLSS battery voltage

<16.0 V dc (no warning tone) ................ 5-51

_MU 31 - GT8170T/GT8270T 02 temperature <38 ° F(no warning tone) ..................... 5-53

EMU 32 - GTSI70T/GT8270T 02 temperature >50__° F and rising(no warning tone) ..................... 5-54

BASIC DATE May 1969 CHANGE DATE June 1971 PAGE _-_

CSD-A-789-{'2) TrrAPOLLO OPERATIONS HANDBOOK-EMU

I PROCEDURE REMARKSSYMPTOM I

EMU 1 IiI

and low vent j@ ICY cle FAN

flow flag "P" _ fan 0FF/ON SWITCHED(VENT-P) Low vent flow OFF INAD-

I fla_ CLEAR %'ERTENTLYafter i0 sec

iL__

Actuating J

rarameter: JVent flow

<4.0 to 5.3 Jacfm for >5 see

Possible oauses:l

a. Fan OFF or i

degraded jb. Battery

degraded J

c. High PGA AP i

d. Low vent Jflow sensor

failed on or Ishifted set

point je, Flow re-

striction In FPLSS vent

loop J

IIlIIIII

IIIIIIII

EMERGENCYPROCEDURE

@ Actuate

b .. OPS

• _Open_-_ purge valve:YES to LOW FLOW

h--_ GTSlhOC/

GT8240C PLSS

battery cur-

rent >3.0A

or <2_.A orGTSI6PT/

GT8270T O 2

temp <38 ° F

NO

GT81hlV/

i GT8241V

i PLSS battery

I voltage

j <16.0 V de

NO

FAN FAILED

"@" OR DEGRADEDYES

• :i

LIFAILING i

i

-e- BATI_Y ]_ES CAUSED FAN

DEGRADATIONii

EVAPROCEDUREi

POST-EVAPROCEDURE

To step 8

next page

®The CPSregulates

at 3.7 ± 0.3

pmid

A full OPS

will pr ovlde

a mlnlm_of 1.25 hours

operation at

h lh/hr flow

at 50 ° to 80 ° F

inlet temperature

with purge valve

open to LOW FLOW

position.

BASIC DATE May1969 CHANGE DATE ,,_JUNE19I] PAGE '.5-5

SYMPTOM

CSD-A-789-(2) tit


PROCEDURE REMARKS

POST-EVAPRUCEDURE (Continued)

__J• LOW vent flaw sensor check

0. RepressurCze 124

• PLSS 0 2 - OFF

• OPS 0 2 - OFF

• Doff helmet and gloves

• Disconnect OPS and

pbrge valve

• Connect blue LM ECS and

red PGA gas connectors

• Connect red LM ECS and

blue PGA gas connectors

• Activate ECS <30 see

LoQ vent. flow flag "P"

Ill _A_CE DEGRADED, OR SHIFT IN

Jl LOW VENT FLOW SENSOR SET

IIIIIIIIIIIIIIIIIII

YES

_J'jLOWVENT _0W SE_SOR

Jl S_IZ_D Sn POINT OR

211 FAILED CLOSED

CSD.A-789-(2) T'r[


SYMPTOM

EMU 2

Warning tone

ON _ud low

PGA pressure

flag "O"

(PRES - "O" )

Actuating

parameter:

PGA pressure

<3.25

_+ 0.15 psld

Possible causes:

a. E,_ leak

b. Low PGA

pressure sensor

failed ON

c. PLSS 02

regulator

shifted set

point or

failed closed

PROCEDURE

EMERGENCY PROCEDURE

• Actuate

OPS

Low PGA

pressure flag

CLEAR

NO

JLOW PGA

PRESSURE SENSOR

FAILED ON

YES

j • Verify PGA

pressure _a_e and

GT8168P/GT826_P

PGA pressure im

>3.4 psla and

shuT. off 0PS

I

I1

q• _ pressure

integrity check

Verify purge vlv - CLOSED

• OPS 02 - OFF

@ PLSS 02 - OFF

Integrity all right

NO

EVA

4-_• Verify PGA

pressure gage and

GTSI68P/GT8268P

PGA pressure

>3.10 psla

m

YES

mwB_

PROCEDURE

POST-EVAPROCEDURE

!

To step 6

next page

To step 7

next page

REMARKS

®OFS regulated

at 3.7 +- 0.3 psla,

BASIC DATE May 1969 CHANGE DATE JUNE1971 PAGE 5-7

SYMPTOM

BASIC DATE

CSD-A-789-(2} 1T1"


PROCEDURE REMARKS

POST-EVAPROCEDURE(Continued)

C>J@ PGA/PLSS Press.

Integrity Check

• Disconnect OPS

• PLSS 02 - ON,

then OFF

Integrity all right

q• PGA Press.

Integrity Check

i

• Connect ECS !

to PGA I

• Disconnect

PISS Hoses

Integrity all right

NO

PGA

LEAK

FiJi DEGRADED PRESSURE

{ REGULATOR

YES

• RECORD GTSI68P/

GT8268P PGA PRESSURE

OR

• CONNECT BLUE PLSS

GAS CONNECTOR TO

OPS PRESSURE REGU-

LATOR CHECKOUT

• STOWAGE PLATE

PISS 0 2 - ON

• RECORD

GAGE PRESSLU_E

PI4;S O.,

Y h:,qu BJF,t i ty

indicator

shows t'ech_r_c N(]--,..j

PiSS 0 2

PRESSUI_E CO_40N

XDUCER FAILED

• Doff

PLSS

LEAK

BETWEEN

OPS SHUTOFF

VLV. AND

PGA

YES LEAK

BETWEEN

PLSS 02

[51iUT-OFY

VAL%_ AND

PGA.

YES

"_"1

• Pressurize

02 ventilation loop

_Depress blue PLSS gas

connector to vent PLSS

• Release blue PLSS gas

connector

• PLSS 02 - ON, then

OFF after 5 min

• Depress blue PLSS

_Bs connector

Verify PISS 0,, flow

NO

• Recharge

PLSS 02

FIZZ C 2

quantity !

indicator I

< gage {-

zero ] YES

NO

FLSS 02

JI

• Rechmrge {

PISS O 2 i

I, PRESSURE P£GU-

LATOR FAILED

GLanCED

GTS182/GTB282

P_S ....

I NO 02 pressure YES

{'@"" _hows recharge i PISS 02

i ., L QUANTITY [NDI-

j CATOR FAILED

'-------e_To step 26 i IT

next p_e J To step 22

_next page

May 1969 CHANGE DATE

©If PISS Op quazLtJty

insufficient, per-

Iorm integrity

check with EC$.

JUNE19"/1 PAGE 5-8

{ll

CSD-A-789-(2)APOLLO OPERATIONS HAND8OOK-EMU

ISYMPTOM _ PROCEDURE

J POST-EVAPROCEDURE(Continued)

IIIIIIIIIIIIIIIIIIIIIIIII

BASIC DATE

i

2_ yE_ 2__e Pressurlze

GT8182P/GT8282F 02 vent loop

PLSS 02 pressure

stable 50 rain : • PISS gasconnectors to

after recharge be stowed in

I stowage plates

• PISS 02 - ON

LEAK UPSTREAM OF i

PIZS 02 SHUTOFF IVALVE

i

GTB182P/GTB282P

PLSS 0 2 pressure

decay after 5

m_nutes

NC

YES

MAY 1969

.Piss>_oAIpressure verifi-cation

• PISS 02 - OFF

• Connect blue

PLSS gas connector

to OPS re_ulator

pressure checkout

stow_e plate

• PLSS 02 - ON

Checkout gageYES

pressure<h.6 psid

NO

!28_ PRIMARY 02 I

PRESSURE REGU-i

LATOR EEGULATING

HIGHER THAN PRV

CRACKING

i PRESSURE

CHANGE DATE JUNE1971

BETWEI_

PISS 0 2

SHUTOFF

VALVE AND

J PISS 0 2

J PRESSURE

j REGULATOR

hiGh 0 2

USAGE OR

UNLOCATED

LEAK

REMARKS

PAGE 5-9

CSD-A-789-(2) T'I'I"


SYMPTOM

EMU 3

PROCEDURE

EMERGENCYPROCEDURE

I

Warning tone [LO_ and high

0 2 flow

! flag "0"

(o -"o") I

Actuating I

parameter: I

PISS 0 2 flaw

>0.50 to I0.65 Ib/hr

for Z5 sec [

IPossible causes: [

a EMU leak

b. Primary 0 2presgure

regulator

regulating

higher than IPRV cracking

pressure

c. High 0 2 flow J

sensor failed

°° I

IIIIIIIIIIIIIIII

BASIC DATE

r

I_A

press gage w

<3.7 or YES

_.0 psid

21 @ Actuate OP$

If PGA press, was

<3.7 psid

If PGA press. _h.0

psld

• PiSS 0 2 shutoff

valve - OFF

_PL_o02PRE_s_EII_G_o_FAI_II

HIGH 02i

FLOW SENSOR

FAILBD ON

PLSS 02 YES

quantity _@ 1

indicator

decreasing A_tttate 0PS i

iNO _

EVA PROCEDURE

t -i

POST-EVA PROC/OURE

i • }_ Press.Integrity Check

• Verify purge

valve - CLOSED

• OPS 02 - OFF

• PLSS 02

supply - OFF

Integrity all right

i NO

I,

To step 8

next page

ir

To step 13

next _age

MAY 1969 CHANGE DATE JUNE1971

REMARKSiT

Q Movement of the

PLSS 0 2 quantity

indicator of

approximatelyone-half of one

division (or

more) in 5

_nutes will

indicate high

02 flowo

PAGE 5-10

SYMPTOM

II

II

CSD-A-789-(2) ZII

APOLLO OPERATIONS HANDBOOK-EMUi

PROCEDURE


REMARKS

f PLSS 02 a,luLn-

Q@ PGA/PISS

Pressure integrity

check

• Disconnect OPS

• PI_S 02 - ON

then 0F_

Integrity all right

J• PGA press.

integrity check

• Connect ECS

to PGA

• Disconnect

PLSS hoses

Integrity all right

PGA

LEAX

I.'

LEAK

BETWEEN

J 0PS SHUTOFFi VALVE AND

PGA

!

I YES

l

HIGH O 2 FLOW '

SENSOR AND

I_A GAS

CONNECTOR!

, YES

i_ Was

GTSI68P/

i i OTB268P

[ yGA pre_s.

I ,b.6 psid

i

.$ NO

PRIMARY 0 2 PRESS.

REGULATOR REGULATING

HIGHER THAN PRV

CRACKING PRESS. AND

PGA PRESS. GAGE

FAII_D

J

I

YES

HIGH

O 2

USAGE

tlty insufficient

perform integrity

check with ECS.

BASIC DATE May 1969 CHANGE DATE JUNE1971 PAGE 5-II

CaD-A-789-(2) ]I[APOLLO OPERATIONS HANDBOOK-EMU

- ISYMPTOM I

EMU-4 J

I(p__l

tonoIIand low feed-

water pressure

flag "A" (H2C-

"A" ) while

using primary

feedwater

Actuating Jparameter:

Feedwat er pres- j

sure <1.45 J± 0,25 psla

IPossible ca%ises : I

a. Suhl imat or J

breakthrough I

b. }{20 separator

blocked J

c. Depleted pri- J

mary feed- 1water reser-

voir j

d. Blockage

at primary

feedwater

bladder J

outlet

Ie. Feedwat er I

pressure

sensor lfailed on

f. Primary }{20 I

shutoff and Irelief valve

closed I "

IIIIIII

J IS primary

!k H20 shutoff! and relief

valve open

I ___ PRIMARY

H20 SHUTOFF

! AND RELIEF

VALVE CLOSED

• H20 diverter

valve - MIN.

• Primary H20

shutoff and

relief valve -

OPEN

(Wait h ml, or

until flag clears

before changing

dlverter valve

position)

PROCEDURE

EVAPROCEDURE

2JGTalIOP/GT8210_

ES feedwater pressur_

_<1.2 psia, Pmd

i_T-'_'ToT/c'r27oT ,o2t,_p,5o°F iand rising I

LOW FEEDWATER

PRESSURE SWITCH

FAILED

I

I

• Sub limator

restart

• Primary H20

shutoff and relief

valve - CLOSED

• }{20 diverter

valve - MAX.

• After 5 mln

H20 diverter

valve - _N.

@ Primaz_ H20

shutoff and

relief valve -

OPEN

l,ow feedwater

_ressKre flag

CLEAR after _h min

YES

F

YE_ GT@I5h/GT@Eh_T

"_i /CO H20 temp - i

<io° F an_ Irising

GTa196T/GT8296T

LOG H20 AT

<_o F and de-

creasing (H20

i diverter InMAX. COOLING)

_NO .

SUBLiMATOR

BREAKTHROUGH

_r

If additional

cooling is required

• H20 diverter

valve - MIN.

• Auxiliary h_O

shutoff and relief

valve - OPEN

(wai_ h min or

until _!a_ clears

before changing

dlverter valve

position)

Cooling improved or

low feedwster pressure

flag CLEAR within

4 min

NO

_ I0'I• If additions 1

cool_ng is required,To step 12

activate 5SLAB- next page

II

BASIC DATE MAY 1969 CHANGE DATE JUNE1971

REMARKS

©! _ctuation of thei

OPS and openirg

of the purge valve

to HIGH flov may

also be used if

BaLSa is not

YES carried. If PLSS

0 valve remains

o_en during

purge mode.

POS consummables

may be'depleted. '

©It is

assumed

that normal

feedwater

depletion

has not

occurred,

©The heat load should

be maintained during

the first 5 minutes

since the objective

is to dry out the

sublimator.

PAGE 5-12.

iiI I

SYMPTOM

CSD.A-789-(2) TI-[


PROCEDUREi

POST-EVAPROCEDURE

BLOCKAGE

AT PFJMABY

FEEDWATER

BLADDER

OUTLET

L YES

[l hl PEIMARY

FEEDWATER

l RESE_VOZ_

DEPLh_ED

YES

l[12J@ Pressurize

_ backslde of

feedwater blad-

der from 0 2vent loop

@ Connect LM

waste management

system to PI_S

primary vent

connector

• Close auxiliary

HrO shutoff and

relief valve

• Hoses

disconnected

from FGA

• PiSS 02 - ON

Feedwater expelled

through prlmsry

Ifeedwater vent

connector

J• Connect _,1

waste mgmt. system

to drain connector

Drain H20 or

02 expelled

from H20 drain

co_ector

NO

JWATER

sEPARATOR

BLOCKED

REMARKS


CSD-A-789-(2)APOLLO OPERATIONS HANDBOOK-EMU

SYMPTOM PROCEDURE REMARKS

_r_-_ EVA PROCEDURE

Warning tone

and low feed-

water pressttre

flag "A" (H20-

i"A") while

using

at._i li _-'y

feedwater

Actuating

parameter:

_eedwater

pressure

<l.h5

tO.Z5 psla

Possible causes:

a. Sublimator

breakthrough

b. Depletedprlmary and

auxiliary

feedwater

reservoirs

c. Blockage

between feed-

water bladder

and pressure

Xducer

d. Feedwater

pressure

sensor

failed on

e. Primary H20

shutoff and

relief valve

CLOSED

f. Auxiliary I120

shutoff and

relief valve

CLOSED

g. Water

separator

blocked

I--_ Is Is • If

primary YES auxiliary H20 y_ |additional

};20 shutoff _ sbuLoff _nd _cooling is

and relief relief valve Jrequired

valve open open JactivateJBSISS

NO NO

AUXILIARY

H20 SHUTOFF

AND RELIEF

VALVE CLOSED

JPRIMARY

H20 SHUTOFF

AND RELIEF

VALVE CLOSED

6_

• H20 diverter valve -

MIN. COOLING

• Primary and auxiliary H20

shutoff and relief valves -

OPEN (wait h min or until

flag clears before changing

diverter valve position)

Q7--_@ Sublimator

restart

• Primary

H20 shutoff

and relief

valve - CL_ED

• H20 diverter

valve - MAX.

COOLING

• After 5 mln,

H20 diverter

valve - MIN.

COOLING

@ Primary H_Oshutoff and"

relief valve -

OPEN

Low feedwater

pressure flag

CLEAR after

h minutes

8

UBLIMATOR

INOIO_ GT8!54T/

GT825hT

LCG H20

temp

>__qo F and

rising

GTSI96T/

GT8296T

LCG N20 AT

<5 ° F and

decreas i ng

(H20 diverter

in MAX.

COOLING )

iYES

O-IIIIIIl|illlIIBI

POST- EVA PROCEDURE

GT8210P

feedwater

pressure

<l.P psia

and

GT816OT/

GT8270T

YE_ PiSS 02

temp > 50 ° F

and rising

NO

iIiiiiiiii

To ate; 12 To step II

next page next page

Q Actuation

of the OPS

and opening

of the purge

valve to HIGH

flow may also

be used if

BSISS is not "

carried. If

PiSS 02 valve

remains open

during purge

mode, POS

consumables

may be

depleted.

QThe heat

load should

be maintained

during the

first 5 minutes

since the

objective is

to dry out

the sublimator.

Q A sublimator

restart may be

attempted prior

to going to

step 12

(prccedure for

restart is given

in step 7, this

page ).

BASIC DATE MAY 1969 CHANGE DATE JUNE 1971 PAGE 5-14

CSD-A-789-(2) ]IIAPOLLO OPERATIONS HANDBOOK-EMU

ISYMPTOM J PROCEDURE REMARKS

I jLOW

FEEDWATEB

PRESSURE

SWITCHFAILED

llI J_Lo_AoE

i

j BETWEENBLADDER

I AND

J FEEDWATERPRESSURE

XDUCER

IiIII.IIiIIIIiiIIlIiiIiiIll

POST-EVAPROCEDURE

J

i

YES

• Pressurize backside

of feedwater bladder from

02 vent loop

• Connect IMwaste

management system to PIZS

auxil_ary feedwater vent

connector

• Hoses disconnected

from PGA

• PIZS 02 - ON

Feedwater expelled

through auxillary

feedwater vent connector

NO'

JBOTH

FEEDWATER

RESERVOIRS

DEPLETED

YES

15_@ Connect

I/4waste

management

system

to PLSS H20

drain

, connector

Drain H20

or 02

expelled from

PLUS H20 drain

connector

SEPARATOR

BLOCKED

BASIC DATE MAY 1969 CHANGE DATE JUNE1971 PAGE 5-15

CSD-A-789-(2} I-I1APOLLO OPERATIONS HANDBOOK-EMU

1SYMPTOM j PROCEDURE REMARKS

- 6 EMERGENCYPROCEDURE

Warning tone

with all warn-

ing flags

CLEAR

Actuating Ipars.met ers:

Vent flow I

<l,.O to 5.3

acfm for I

>5 sec

PGA pressure I

<3.10 to 3.h0 Ipsia

PLSS 02 flow I

>0.50 to 0.65 I

lb/hr for

>5 see I

Feedwat er I

pressure

<1.20 to 1.70 I

psia I

IPossible causes: I

a. Tone failure I

b. Low vent flow I

c. High P!.SS 02

flow i

d. Low feedwater Ipressure

Ie. LOW FGA pres-

sure I

III

SPGA pressure L

gage <3._O

paid i

f NO

J• After tone

goes off,

change posi-

tion of mode i

select switch l

momentarily

Tone on

J

TD4POEARY TONE

ACTIVATION

tI!J_ LOW)mi VENT FLOW

) FLAG FAILED

CLEAR

+• Actuate

lO_ 0PS

j • Open purge

I vlv to LOW

(S

Go to

step I,, EMU 1

page 5-5

YES

t

r

LOW PGA PRES-

SURE FLAG

FAILED CLEAR

I

L

t

>5 sec, then iON i

Low vent flow

flag "P"

(vent-"P")

while fan is off Ii

.o I YEs:i,91 Observe I

PL$S 02

quantity

indicator

for indica-

tion of high

0 2 flow

High 02

flow indicated

NO

AGo to

step 5,

_4U-2,

page 5-7

iS

• Actuate OPS

J

¢PS

S Go to

step 7,

EMU 3,

page 5-10

tS

• Actuate

OPS

t!i HIGH 0 2 FLOW

J FLAG FAILED

CLEAR

BASIC DATE

L iim m i lIB i Illl gill 1Ill giN ilm m m m |

J EVA PROCEDURE

IIII

Primary

H20 shutoff and

relief valve -

OPEN

XO

To step 17

next page

mlmmmmmmmmm_mima

i IS th_

YES EMU

I oper-

ating

on aux- YESliary

feed-

water

_ -_°Go to step 18

next page

0o to

step 2h

next page

May 1969 CHANGE DATE JUNE 1971

©Movement of

the PL_S 02

quantity

I indicator of

apprcximately

one-half of

one division

(or more) in

5 minutes

vill indicate

high 0 2 flow.

i

!i

PAGE 5-16

I I )

CSD.A-789-(2) lII[APOLLO OPERATIONS HANDBOOK-EMU

J PROCEDURESYMPTOM j

J EVAPROCEDURE(Continued)

IJ 17J LOW FEED-

J WATER PRESSUREFLAG FAILED

I . CLEAR

II

ljJ • H2O diverter

J valve - _N.• Open prlm_y

I H20 shutoff _drelief valve

J • Wait h rainbefore cKanglng i

J 20 diverter I

j valve position

I j _wFEED!J WATER PRESSURE

FLAG FAILED

J CLEAR

I J.._oJ diverter

J valve - M-IN.• Open auxil-

j iary H20 shut-off and relief

I valve• Wait 4 mln

J before cKangingH20 diverter

I valve position

iiIIIIIIItII

BASIC DATE

JGT8110P/GT8210Pfeedwat er pressure

<1.2 psia, and

_T-_70T/GT8eTOT o2

temp >50 ° F and

rising

!I TONE FAILED

(CAME ONi WHEN THERE

i WAS NO CAUSE)IL

FEEDWATER

PRESS. FLAG

FAILED CLEAR

JGO to step 3,

_MU 4, page 5-12

[email protected]

2_ AuxiliaryYES

H20 shutoff and

relief valve -

OPEN

61 FEED-

WATER

PRESSURE -4-

FLAG

FAILED

CLEAB

QI_@ If

_ditional

cooling is

required,activateBS LES

NO

JGTSIIOP/GT8210P

feedwater press.

<1.2 psia and

GT--_70T/GT8260T 02!temp >50 ° F and

rising

2_ Go to

step lO,

LMU 5,

page 5-1h

MAY1969 CHANGE DATE JUNE1971

REMARKS

©Actuation of

the OPS and

opening of the

purge valve to

HIGH flow mayalso be used

if BSI_S is

not carried.

If PLSS 02valve .re-

mains openduring purge

mode, POS con-

sumables may be

depleted.

PAGE 5-17

SYMPTOM--_I

CSD-A-789.(2) m


PROCEDURE

EMERGENCYPROCEDURE

PGA pressure

gage <3.7 psid

and appsLrant ly

stable and

everything elsenorms/

Possible causes;

a. Gage shift or

failure

b. PLSS 02

regulator

shift/

degraded

II

PRESSURE

GAGE

PALLED

L.II[IIIIII[IIIIII[[II]

IIYES

----" EVA PROCEDURE

rify GT8168P/

J GT8268P PGA Turn off

I pressure OPS

>3.7 psid

REGULATOR

SHIP'fED

SET POINT

BASIC DATE May 1969 CHANGE DATE JUNE1971

©

REMARKS

PLSS 02 pressure

regulator regulates

the PGA to 3.7 psld

minimum if flow is

0.07 to 0.7 Ib/hr.

PAGE 5-18

CSD-A-789-(2) ITI


SYMPTOM PROCEDURE REMARKSI

_ J EMERGENCY PROCEDURE

PLSS 0 2 iquantityindicator

abnormal

read'n6 J

Possible Jc aus es :

a. PI_s 0 2 J

quantity jindicator

failed

b. PISS 0 2 I

pressure jXducer

failed

c. PIA3S regu- Jlator 02

regulatin_ jOUt of spee

d. EMU leak I.....

e. High 02 usage

IIIiiIIIIIiIIilIII

j IPGA pressure

<3,7 or >4.0 YESpeid or high

02 flow

fla_ "0"

NO

_ag GT8182P/GT8282P

ree with PLSS 02

quantity indicator

L NO

• Recharge

PISS 02

• ctuate!OPS

If PGA

I pressure

was <3. T

psld Or

HIGH 0 2flow I

FIA(i "0"

If PGA Ipressure

>4.0 paid J

@'PLSS 0 2 J

_._2Je- O_J

zlPLSS 02

PRESSURE REGU-

LATOR FAILED

iPLSS 02

quantity

indicatorJ shows re-

charge

t!_o

PLSS 0 2

_UANTZTY INDI-

3ATOE FA/LED

EVA PROCEDURE

I

YES

'mR'

Go to step 5,_2, page 5-T

POST-EVAPROCEDURE

®

7'_@ Recharge

PiSS O2

YES_GT8182P/GT8282P

pLSS 0 2

pressure

shows

recharge

t YES

PLgS 02 QUANTIT_

ZNDICATOR WAS

IN ERROR

'l_ GT8182P/

I GT8282P PISS

02 PRESSURE

FAI LED

LEAK

BETWEEN PLSS

02 SHUTOFF

VALVE AND

HIGH O_ FLOWSENSOR _

NOi

II

4--

jOTSlB2P/

GT8282P PISS

YES 02 pressure

shows recharge

12_ PISS 02

PRESSURE XDUCER

FAI LED

(C0_ON XDUCER) iI

15_ • PISS 0 2

.._ shutoff valve -OFF

17J GT8182P/

j GT8282P PLSS 02

pressure or

PISS 02 quan-

tity indicator

stable after

YES 50 minutes

1;0

N _UPSTREAM OF

PISS 0 2 SHUTOFF

VALVE

1600 Btu/hr

metabolic

load Dlus

allowable

leakage

CObBles a_rox-

imately 0.25 ib/

hr 02,

Without makeup

02, this will

reduce PGA

pressure to

3 psia In

approximately3 minutes.

®OPS regulates

at 3-7 +- 0,3 paid.

BASIC DATE. May 1969 CHANGE DATE JUNE1971 PAGE 5-V; : ,.

SYMPTOM

EMU 9

_2PGA pr es s',.u-e

gage>_.0 paid

Possible causes:

a. Regulator

fai Is open

or shifts

set point

b. PGA pressuregage fails

BASIC DATE

IIIJ_I

CSD.A.789.(2}/-FI

APOLLO OPERATIONS HANDBOOK.EMU

PROCEDURE

EMERGENCYPROCEDURE

,, ?igh 02 flow @ Actuate OPS PiSS 02 PRESS.

fla_ "0" i----_(after 5 sec) YES : • Close PLSS REGULATOR FAILED

or PLSS 0 2 02 shutoff sETOPENpoINTORSHIFTED

quantity valve if

indicator possible

decreasing

..... _Does GT8168P/GT8268P SHIFT IN PLSS 02PGA press, agree with _PEA press, gage YES REGOYATED PRESSURE =

N0 LPOST-EVA PROCEDURE

I' !

,6j. connect blue PLSS 71

gas connector to GTSI68P/GT8268POPS regulator "-_

checkout stowage PGA PRESS. FAILED

i plate I

Does OPS gage agree

with PGA gage YES

_oN

PGA PRESS.

GAGE FAILED

REMARKS

®PLSS 02 pressure

regulator regu-

lates to h.0 paidmaxizr_m to PGA.

PGA pressure relief

valve cracks at

5.0 to 5,75 paid.

®If additional mobil-

ity is needed,

open purge valve

to reduce PGA

pressure to

>3.h paid.

®An additional

indication of

high PGA pressurewould be reduced

PGA mobility.

May 1969 CHANGE DATE JUNE1.971 PAGE 5-ZO

11r

SYMPTOM

EMU I0

Loss of p_p

noise

Possible "causes :

a. Pump switch

OFF

'b, Power failure

,c. Cpen RCU

connection

d. Pump failure

BASIC DATE

CSD.A-789.(2) 13]


PROCEDURE

EMERGENCYPROCEDURE

IJ lJ Receiving

F. sldetone

• Actuate OPS

and purge valve-

J LOW FLOW andactivate BSLSS

IIIIIINmm_m

I

{ Is RCU connection

. properly mated

NO

OPEN _CU CONNECTION

YESM,

Pb]4P SWITCHED!

OFF

F m wEVA PROCEDURE

GTS___OC/

Pump switch -----@- GTB2b0C ----e-

or_ YES PiSS battery KES

current

<i._ A

NO

JPUMP SEIZED

OR SLOWED

PUMP MOTOR

FAILED

( OPEN CIRCUIT)

Q• If additions/

cooling is required

activate BSLSS

POST-EVAPROCEDURE

YES Y_II; POWER FAILED

/

May 1969 CHANGE DATE JUNE1971

REMARKS

QACTUATION of 0PS

and opening of

pl/rge valve to

HIGH FLOW may

also he used if

BSLSS Is not cart:led.

If PLSS 0_ shutoff

valve remains

ol_en dur Ing

purge valve

operat Ion, POS

consumables

may be depleted.

PAGE 5-21

CSD-A-789-(2) [[/APOLLO OPERATIONS HANDBOOK-EMU

ISYMPTOM j PROCEDURE

£MU II EMERGENCY PROCEDUR[

Inadequate

cooling of

crewman

(no wP_rn ing

tone, no

warning flag)

IPossible causes: J

a. Thermal leak

b. _=p degradJtion or flow I

Irestriction

e. oas m trans-J

portllnewater j

d. Primary ware r

shutoff and

relief valve

closed

e. Auxiliary J

water shutoffJand relief I

valve

closed

f. Water

separator

blocked

g. Depleted

primary

feedwater

reservoir

h. Depleted

auxiliary

feedwater

reservoir

i. Blockage

between

bladder

and

sub limator

II

•wr f,.2opvalve - idiverter

MAX.

@ V_-rify pump

J switch - ON

,l'1 Is primary

H20 shutoff

and relief

valve open

i

NO

fT j@ H20

diverter valve-

MIN.

• C,_,,.:n H20

shutoff and

relief valve

that inadver-

tently wKs

closed

J 'Wait h_ minutes

j before changingH20 diverter

[ _J valve position

!

I

YES [

Is thef

,' F.MU operating !YES

r on auxili_y "_feedwater i

t

U !,4[,_"-

5_

I see i

![Cooling improve_!YES

'within 3 minutes! ''_i -- i

NO_r

18]@ If additional

;cooling is required,

activate BS_S _i

iI

.m

LO_

PEEDWATEH

PRESS. SWITCH

FAILFD

A Is auxiliary

H20 shutoff and

re]_ef valve opez

YES i NO

J GAS IN

T R._S P 0RT

WATER LINE

F""""'"" .......

J L

I[ _ GT8170T/GT8270T

02 temp _..Oe F,

GTSI96T/GT8296T

LCG H2_ AT (50 F,

i and GTSI5 hT/Gq _254TLCG H20 tamp .50 ° F

(h20 d_vt'rter in

MAX, COOLING)

I _C

C_'_J.gC;T,GT_:96T] _ cc,o_;_FmWI LCG _pO AT >'I ° F _ RATE <3.5 LB/MI;i

and GT6154T/'GT625_T

LCG H20 tamp <55 ° F PL}'P CF FLOW, RESTRICTION

_ES

i _ Go to

steF 5,

£MU iO,

p_ge 5-21

Il

Ir

To step 20

next p[ge

iII

l--J '_EC J LOW FE_D-

GT81iOF/GT8210} _ WATER FRESSUREt'eedwster pressure

SWITCh FAILED<l.____2psia

PRESSURE SENSOR _ EMU operating

FAILED on aux i li,%ry

[ fee_water

v---0 to oto

step 12, E_J 5

Page 5-15 step 9, E._ h,_age 5-12

BASIC DATE MAY !969 CHANGE DATE JUNE1971

REMARKS

©Actuation of the gas

trap must be per-

formed by another

cre_tn.

©Actuation of the OPS

and opening of the

purge valve to H!_I

flow may also be used

if BSLSS is not

carried. If PLSS 02

shutoff valve remains

open during purge

mode, _3S consur_ables

may be depleted,

QAS an additional

indication of a

degraded pu_, the

batte_ current

may exceed 3.O A.

PAGE 5-22

1i[

CSD-A-789-(2) TTT: APOLLO OPERATIONS HANDBOOK-EMU

SYMPTOM II PROCEDURE REMARKS

EVA PROCEDURE(Continued)

BASIC DATE

IIII

IIIIIIIIIIIIII

L

IIIIIIIIIIIIIIIIIII

EXCESSIVE

THERMAL LEAK

INTO EMU

• Check LEVA

position, latch

and interface

collar, and adjust

as required

Cooling improved

N©

mD_

i INSULATION

HEAT LEAK !

I

YES

LEVA

HEAT LEAK

MAYI969 CHANGE DATE JUNE1971 PAGE 5-2B

SYMPTOM

EMU12 J

EVA-I lose8

voice from

MSFN (see

"Additional

conditions"

below)

Additional

conditions: J

i. Dual EVA

2. EVA-I has J70iC_ from

EVA-2 I

Possible causes: J

a. I,M or MSFN Jfailed

b. EVA-I "A" Jvolume con-

trol turned Jtoo low

c. EVA-I R/T JrelaF K-I

failed

closed in Jbackup mode

d. Triplexer "A" I

section failedl

e. EVA-I "A" re- lceiver RF

section failed I

!f. EVA-I tri- "

plexer "A" Jsection, "A"

receiver, or

R/T relay K-I l

failed open Inl

both modes {

g. EVA-1 "A" re-

ceiver audio J

section failed I

h. Recelver "A" IRCU volume

control failed I

IIIIIIII

BASIC DATE

CSD.A-789-(2) ITl


Does EVA-2 re-

ceive voice

J from MSFN

F

NI_ OR _I_

FAILED

71EVA-I "A"

VOLUME CONTROL

TUNNED TOO LOw

YES

I

Y_

m_mmmn

POST-EVAPROCEDURE

May 1969

PROCEDURE

EVA PROCEDURE

Does kWA-I

have side- YES

tone

INO

@ EVA-I set

RCU "A"

volume con-

trol to max.

I • Set EFA-I

mode sel. SW.

at "B"

• Set EVA-2

mode sel.

SW at "A"

1Does EVA-2

YES receive

voice from

EVA-I

i _No

,__]EVA-I R/T RELAY

' K-I FAILED OPEN

IN BOTH MODES,

OP TRIPLEXER "A"

SECTION FAILED

F

iii++A_R,TREl LAy K-I FAIL-

ED CLOSED IN

-e.J MODE "B", OR

"A" RECEIVER

RF SECTION

i FAILED

! I

IF

!101i • Swap EVA-I RCU

with EVA-2

EVA-I receive on

"A" receiver

0

EVA-I "A" RECEIVE_

FAI LED

ii

CHANGE DATE

RECEIVER "A"

"--'@" RCU VOLUME

YES CONTROL FAILED

i!

i

REMARKS

JUNE1971 PAGE 5-24

SYMPTOM

EMU-13:

EVA-I loses

voice frc_

MSFN (see

"Additional

conditions"

below)

Additional

condltlons:

i, Dual EVA

2. EVA-I does

not receive

voice from

EVA-2

Possible causes: J

a, Comm. Icarrier

failed

b, RCU mode J

selector "A"

section Ifailed

c. HCU cable J

failed

d. Primary J

dual e_.

regulator Ifailed

e. PLSS electrl- J

cal umbilleal I

failed I

f. Ant enn& or

triplexer Je olmmon port

failed

g, J-3 Pin 8 I

fal led j

IIIIIIIII

J ,,

CSD-A-789-(2) T[l


PROCEDURE

EVA PROCEDURE

II

Does _A-I have

I sldetone y_

I ii J@_VA-I set mode

sel. SW, in "A"

I positionc_m. restor_ i

j withM_ i----_YES

_o

lls°=s_,op_Ition "B"

Does EVA-I hear' I

, siaetone _J y----_"_

BCU MODE SELECTOR

DUAL CONTACT "A"

WAFER FAILED

• EVA-I mode sel. SW.

in pea. "B '_

• EVA-2 mode sel. SW.

In pos. "A"

REMARKS

NO

@ EVA-I PLSS

fan - OFF

>_ sec

i EVA-I hear

' warning Tone

t

EVA-I low

vent flow

flag "P"

while fan

is OFF

YES

To step 16

next I)age

Y_S Ii

;_]RCU MODE SELECTOR "A"

WAFER FAILED

RCU J-3

PIN 8

iFAILED

NO

Jmmm_ Im N

To step 13 To step 18

next page next page

BASIC DATE May 1969 CHANGE DATE JUNE1(_71 PAGE 5-25 ,

SYMPTOM

BASICDATE

CSD-A-789-(2)11-1

APOLLOOPERATIONSHANDBOOK-EMU

PROCEDURE REMARKS

POST-EVAPROCEDURE

rI __1 .

@_Swap EVA-I

CO_. c_rrier

with _A-2

IComm. YES

restoredL

NO

,r

SUIT ELECTRICAL

HARNESS FAILED

L

I_@ EVA-I

connect to

[14 electrical

umbil_cal

Comm. restored "_. YES

• Swap EVA-I

OPS with

EVA-2

Comm. YES

restored

NO

EVA-I TRIPLFX-

ER COMMON PORT

FAILED

- _A-ICON_.

C_Ri_FAIL_

• Swap EVA-I

RCU with

EVA-2

Co_. re-

stored in mode YESsel. SW.

pos. "A", "AR" 4

and "B" JNO

ECUMODE SE-

LECTOR DUAL

CONTACT "A"

WAFER FAILED

:l..._ PRIMARY DUAL/

CO_4. REGU-

LATOR FAILED

PLSS ELEC-TRICAL

UMBILICAL

! FAILED

91 'if

EVA-I ANTENNA

OR CABLE FAILED

May 1969 CHANGE DATE JUNE1971 PAGE 5-26

SYMPTOM

EMUi4

EVA-I loses

voice from i

EVA-2 (see "Ad-:

ditional condi-

tions" below)

Additional

conditions:

I. EVA-I has

voice from

MSFM

2. Dusd EVA

Possible

causes :

a. EVA-I B/C

volUme con-

trol set too

low

b, EVA-I "B"

receiver

audio

section

failed

c. EVA-2 P_

switch was

OFF

d. EVA-2 R/T

relay K-2

failed

closed in

"A" position

e. FM link

failed

f. Audio sec-

tion of

signal

processor

failed

(Continued on

next page)

PROCEDURE

CSD-A-789-(2) 1-rt


EVAPROCEDURE

II

• _A-I set RCU iiB/C vol_e to I VOLUME coNTROL WAS

MAX, TURNED _0 _W

l Co_. restored

I NO _S

I Does MSFN hear _A-I "B"_A-2 and re-

ceive _ from YES NCVR. A_IOSECTION FAIL_

_A-2

II61

J Does MSFN re- _ • _A-2 switch

ceive _ but YES PTT O_/_IN

J no voice from_'A-2 Co_. restored

YES

i I ISW. - pos, "B" i MOM from _IN.

I YES I _srestored J I COCo restored _I

Co_, i i

I 1_° _°I _

_A-2 R/T RE-

l _Y K-2 FAIL_CLOSED IN "A"

POSITION

FAIL_

L,................-------Tostep 15 To step 12

i next page next page

IIIIIIII

EVA-2 PTT

SWITCH WAS

OFF

|iiiiili_i

REMARKS

BASIC DATE May 1969 CHANGE DATE JUNE1971 PAGE. 5-27

SYMPTOMII

Possible causes: I

(continued) !

_. PTT circuit

in EVA-2 RCU ifailed

h. _ circuit Iin EVA-2

PLSS failed

i. EVA-2 com. Icarrier

failed I

tIIIIIIIIIIlIllIIIlltllI

CSD-A-789-(2) 15_


PROCEDURE

POST-EVAPROCEDURE,I

J• Swap EVA-2

RCU with

EVA-I

Co_,

restored

NO

PRIMARY VOX

CIRCUIT IN

EVA-2 PLSS

FAILED

YES

MAIN CONTACTS

OF _ SWITCH

IN EVA-2 RCU

FAILED

• Swap EVA-I

co mm . ear-

rler with

EVA-2

Comm.

restored

NO

AUDIO SECTION

OF SIGNAL

PROCESSOR

FAILED

iiJil EVA-2 COM_.

----m _ CABRIEH FAILED

YESi

REMARKS


71!

SYMPTOMJ

EMU15 J

I_I

EVA-2 loses Jvoice from

MSFN (see "Ad-ditional con-

ditions" below)

Additional Jconditions:

Ii. Dual EVA

2. EVA-2 re- J

celves voice

from EVA-I j

Possible causes: i

a. "A" volume "

control Jturned too

low or failed

b. LM or MSFN J

failed

c, EVA-2 "A" re- I

ceiver RF

section Jfailed

d. EVA-2 "A" J

section tri- |

plexer failed a

e, EVA-2 "A"

receiver Jfailed

II[IIIIIIIIIII

CSD-A-789-(2) I'17


PROCEDURE

EVAPROCEDURE

2J ,.Does EVA-I re- @JEVA-2 set

ceive voice _ RCU "A"'vol-ume control

from MSFN YESto MAX.

N0

LM OR MBFN

FAILED

C_mm. restored

_°

l @ EVA-2 set

mode sel. SW.

at "¢["

Does EVA-2

have sidetone

J NO

EVA-2 "A" RE-

CEIVER RF SEC-

TION FAILED

YES

YES

YES

EVA-2 "A" VOL-

UME CONTROL

TURNED TOO LOW

• EVA-2 set

mode sel,

SW at "B"

EVA-I set

mode sel,

b-"_,at "A"

J EVA-I has co_m.

J with EVA-2

NO

JEVA-2 "A" SEC-

TION TRIPLEXER

I FAIL_D

l

• Swap EVA-! RCU with

EVA-2

EVA-2 co_m. with MEPN

restored

NO

EVA-2 "A" RE-

CEIVE_ FAILED

POSTEVA PROCEDURE

YES

EVA-2 RCU "A"

VOLUME CIRCUIT

FAILED

REMARKS

BASIC DATE /May 1969 CHANGE DATE JUNE1971 PAGE 5-29 "

SYMPTOM

EMU16i j'

EVA-2 loses

voice from

MSFN (see "Ad-

ditional condi-

tionS" below)

Additional

conditions:

i. Dual EVA

2. EVA-2 does

not receive

voice from

EVA-I

?osslhle causes:

a. RCU mode I

selector

dual contact Ifailed

b. RCU mode Iselector

switch "A"

wafer failed I

c. RCU P-3 pin 8

failed I

(Continued on

next page) I

IIIlIII[IIlIIIIII

CSD-A-789-{21 LU


PROCEDURE

EVA PROCEDURE

II

Does EVA-I have

sldetone YES

I • EVA-2 set mode RCU MODE SEL.

i sel. SW. in DUAL CONTACT"A" position "A" WAFER

I FAILEDMSFN co:me.restored YES

I

• EVA-2 set • EVA-2 mode Imode Bel. SW. sel. SW,

to "B" to "B"

@bEVA-I mode selDoes EVA-2 SW. to "A"

hear sldetone

• EVA-2 FanRCU MODE SEL.

OFF >5 sec SW. "A" WAFERthen ON

FAI LED

EVA-2 hear

warning toneYES I

]NO

EVA-2 low

vent flow _ RCU P-3 PIN 8 i :

warning J NO FAILED I

flag "P" I --

IYES .i,

i

_r

To step 10 To step 17 To step 12

next page next page next page

May 1969

REMARKS

BASIC DATE CHANGE DATE JUNE1071 PAGE 5-30

!

SYMPTOM PROCEDURE

POST-EVAPROCEDURE

CSD-A-789-(2) 1"1"1


Ii

d. PI_B elec-

trical umbil- Iical failed |

e. EVA-2 com. Icarrier

failed

f. EVA-2 tri- I

plexer failed

g. EVA-2 suit I

electrical

harness Ifailed

h. RCU mode Iselector

switch dual {and primarycontact "A"

wafer failed i

i. Primary/dual

co_zn, reg- Iulator failed

J. EVA-2 antenna Ior cable

failed

iIiIiiIiiIiIIiiiiII

@ EVA-2

connect to I/4

tmbllieal

MSFN comm. all

right

_°

• EVA-2 swap

com. carrier

with EVA-I

MSFN comm.

all right _YES ii

_o

EVA-2 SUIT

ELECTRICAL

HARNESS FAILED

PLSS ELEC-

TRICAL UMBIL-

ICAL FAILEDYES

Comm. restored

i

, I N0

ii

EVA-2 C0_94. EVA-2 TRI- i

CARRIER FAILED ! PLEXER FAILED

i

i

EVA-2 swap RCU MODE SEL.

RCU with EVA-I SW, DUAL AND

PRIMARY CON- ITACT "A" WAFER I

Co_m_. all right Iin "A" and "A_" _ FAILED

,, I

_°191 N

1_ I"N._Y/DUAL EVA-2 ANTENNACOMM. REGU- ' -i

OR CABLE FAILEDLATOI_ FAILED

REMARKS


CSD-A-789-(2)mAPOLLOOPERATIONSHANDBOOK-EMU


EMU17 EVAPROCEDURE

II

voice from _A-2 !

EVA-I (see _set RCU B/C I VOLUME"Addition_ I vol_e to I CONTROL WAS

?onditlons" I MAX. i TU_ _O LOW

below) i I CoB, 'restored

_S

I I'°I Does _ have

co_. from

Additional

conditions:

i. Dual EVA

2. EVA-2 has

comm. with

MSFN

Possible causes :I EVA-I

Ia. EVA-2 B/C

vol_e con- Itrol turn-

ed too low Ib. EVA-2 "B"

receiver

failed I

c. EVA-I RCU PTT Iswitch

turned OFF

d. EVA-2 "B" Isection tri-

plexer or K-2 Irela_v antenna

section failed I(Continued On

next page) I

IIIIIIIIIIIIII

NO

@ EVA-Iensure that

RCU P_

switch is

in MAIN

position

BASIC DATE

EVA-2/EVA-I

toE, restored

N0

@EVA-I setRCU PTr

switch to

MOM position

lq

May

EVA-2/EVA-I

co_m. restored

NO

@EVA-I swap RCU

with EVA-2

EVA-2/EVA-I

comm. restored

NO

To step 13

next p_e

1969

YES

II' YES

@ EVA-2 set

mode sel.

SW. to "A"D-

• EVA-I set

mode sel.SW. to "B"

EVA-2/EVA- i

comm. all

right _S

J NO

rj

EVA-I i

RCU PTT SW. i

ACCIDENTALLY I

l SET TO 0_ iPOSITION

ii EVA-I V0X! CIRCUIT OR

! RCU PTT SWITCH

i VOX SECTION

FAILED

POSTEVA PROCEDURE

YES

EVA-I

RCU PTT

SWITCH

CIRCUIT

FAILED

CHANGE DATE

EVA-2

"B" RECEIVER

FAILED

t

EVA-2

"B" SECTION

TRIPLEXER OR

K-2 RELAY

ANTEnnA SEC-

TION FAILED

JUNE1971 PAGE 5-32 "

CSD-A-789-(2) ]33.


SYMPTOM

II

Possible causes :

(continued) I

e. EVA-I VOX jcircuit or

RCU PTr

switch VOX Isectionfailed

f. EVA-I RCU JPIT switch

clrcu_t i.

failed J

g. EVA-I pri-

mary/dual Jsignal

processor Jfailed

h. EVA-I VOX/FFI lcircult

failed

i. EVA-I comm. l

c_rrier "

failed J

J. EVA-I suit

electrical Jharness

failed J

IIIIIIIIIIIIIIII

.... i

@JEVA-I connect

to LM

umbllical

EVA-I/EVA-2 comm.

restored

;NO

J@I EVA-I swap

co._. carrier

with EVA-2

EVA-Z/MS_

comm. restored

_o

• EVA-I SUIT

ELECTRICAL

HARh_EBS

FAILED

PROCEDURE

POST-EVAPROCEDURE(Continued}

r

A-I reconnect

%0 PISS

•RCU mode sel.

; switch to "B"

_..._•$..M set forbackup mode

_Es _iEVA-I/MS_comm. restored

l_°i

NEVA-I VOX/PTT

CIRCUIT

FAILED

iI

i!

!

I

EVA-I PRIMARY/ I

DUAL SIGNAL I

PROCESSOR

FAILED

,Ji EVA-I C0,_4.

CARRIER

FAILED

,_'_s.

BASIC DATE

REMARKS

May 1969 CHANGE DATE __JONE 1971 __ PAGE - 5-33

SYMPTOM

EMU18

Loss of voice

co_m. with

rEVA-I,

EVA-2, or MSFN

(two-man EVA)

(comm. restora-

tion procedure)

Possible causes:

a. EVCS re-

ceiver "A"

squelch

failure

b. LM VHF "A"

failure

c. Volume con-

trol too low

d. P_ switch

OFF or inter-

mittent

e. VOX circuit

failure

f. EVA-I XMTR

"B", EVA-I

RCVR "C" •

EVA-2 RCVR

"B", or

EVA-2 XMTR

"C" failed.

g. EVA-I RCVR

"B"/RCVR "C"

surmmed out-

put failure

h. EVA-I or

EVA-2 total

comm. failure

BASIC DATE

IIIII

1IIIIII!IIIIIIIiIIIII!

_au-A-/oY-(Zt .iLL


PROCEDURE

EVAPROCEDURE

Excessive

noise present

in headset

NO

• I_crease

appropriate

volume control

?i YES @ Outer volume

i-----@- control -

DECREASE

EVA-I/EVA-2

c_. all righti i

VOLUME CONTROL

TOO LOW

YES

Colmm. all right

1

' • PTT - OFF • Outer volume i

then MAIN control -

Co_. all right INCREASE

_s_l _o

J L_.,_,,o. ijPTr SWITCH

OFF OR

INTERMIt*rENT Comm. all right

NO

I:_s. "B"

i_ EVA 2 mode -pos. "A"

• EVA 1 mode -

pos. "A" NO YES

EVA 2 mode - _ Comm. all right

i pos. "B"

Comm. all right ii

YES [ NO

i

r_ N

1EVA-1 RC-'VR "B"/ EVA-1 OR

RCVR "C" SU_@4ED EVA-2 TOTAL

OUTPUT FAILURE _ C0_4. FAIL-URE (T_IPLEXZa,POWER SUPPLY,

ETC. ) oR LMFAILURE

jii

EVCS RCVR A

SQUELCH FAIL

OR LM PROBLI'_4

ON VHF A

YES

_0 _

i • Outer volumecontrol IN-

CR___SE

i periodicallyto see if

noise present

VOX

CIRCUIT

FAILURE

EVA-I XMTR "B"

OR

EVA-I RCVR "C"

OR

EVA-2 RCVR "B"

OR

EVA-2 MXTR "C"

FAILED

I

May 1969 CHA_IGE DATE JUNE1971

REMARKS

QReception of MSFN

is disabled while

outer volume is In

full DECREASE.

®EMUdata not

available from EVA-I.

EVA-I cannot hear

MSFN.

®data not ave/l-

able from EVA-2.

EVA-2 cannot hear

MSFN.

PAGE 5-34

lit

CSD-A-789-(2) IT[


SYMPTOM

EMUIgI l

PROCEDURE REMARKS

EVA PROCEDURE

iEVA loses voice

from LM (see l

"Additional iconditions"

below)

Additional

conditions:

I. Single EVA J

Possible causes: ia. EVA "A" vol-

tune control Jturned too

low I

b. EVA "A" re-

ceiver HF Jsection

failed

c. BIT relay K-I Jfailed

d. EVA antenna I

failed

e, EVA cow.

carrier

failed

f. Trlplex_r

common port

failed

g. LM elec_rlcal Jumbilical

failed

(Continued on iJnext page)

iilJiIIIiIIIIi

BASIC DATE

II

L D_oes EVA re-

) ceive voice

I from MSFNl

Ij@ EVA set RCU

re'A" volume

control to

MAX.

Co_m.

restored

NO

Does EVA hear

sidetone

NO

_mmmilmi

I i,

J • EVA connect

to I,M Umbil. -

C olnIn.

restored

EVA C0)@4.

CARRIER

FAILED

YES

YES

l

YES

YES

JEVA "A" VOL-

t,ME CONTROL

TURNED TOO

LOW

@EVA and LM

configure

for "B"

mode

Comm.

i re_toredL

NO

'r

• EVA swap

i OPS with

other crew-

Ran

h

Comm.

restored

NO

im

EVA R/T RE-

LAY K-I, K-2,

OR TRI PLEXER

COMMON PORT

j FAI_

ITo step 12

next p_e

6J !

EVA "A" RCVR.

RF SECTION,

OR R/T RELAY

K-I, OR LM

FAILED

YES

POST-EVAPROCEDURE

EVA ANTENNA

FAILED

IYES

To step 15

next page

May 1969 CHANGE DATE JUNE19?1 PAGE 5-35

SYMPTOM

CSD-A-7 uYq_'Ju..t


PROCEDURE REMARKS


II

Possible Causes: I(continued )

h. EVA RCU "A" ivolume cir-

cuit failed

i. LM failed I

J. EVA "A" re- Icelver RF

section

failed Ik. PLSS electri-

ca/ umhiliced Ifailed

i. Primary dual I ....comm. regula- 151tot failed

I • EVA connectm. EVA "A" re- to other PLSS J

I

ceiver failed i Cosm. restored

II

i_ I"°I LH FAILED

Ii_

BASIC DATE

IIIIIj II . PRIMARY/DUALCO_. REGU-

I LAiR_A_ J

i tIIIIIII

J• 124 crewman

I transfer to [l_ ELECTI_,ICAL

i pilot's elect. UMBILICALi umbilical FAILED

Comm. with MSFN ----e-all right YES

LM CREWMAN CON.

CARRIER FAILED

IJ• EVA reconnect

to original

PLS8, swapRCU with

other crewman

Comm. restoredYES

_"°

Does EVA hear ----l-sldetone YES

May 1969

NO

JEVA RCU "A"

VOLUME CIr-

CUIT FAILED

EVA "A" RCVR. RF

SECTION OR

R/T RELAY

K-I FAILED

Did LM receive _S EVA "A" RCVR.voice from EVA OR R/T RELAY

K-I FAILED

L NO

CHANGE DATE JUNE1971 PAGE 5-36 _.

! I!

SYMPTOM

EMU2O

I/4, loses voice

fram EVA (see

"Additional

conditions"

below) .

Additional

conditions:

!. Single EVA

Possible causes:

a. i_. failed

b. EVA RCU PTT

switch

turned OFF

c. EVA VOX cir-

cuit failed

d. EVA "A" mode

failed

e. EVA co_.

carrier

failed

f. EVA RCU vex

circuit

failed

!Continued on

next page)

I

t-IIIIIIIIIIIIIIILIIIIIIIIIII

CSD-A-789-(2) TFT


Does LM receive

voice frc_ MSFN

YES

I!

iI

_°

LM FAILED

1• EVA set

RCU to PTT

Colmm. restored

I NO

• EVA setmode sel,

SW. to "B"

l_ode

YES

Co_. restored _YESl

NO

EVA cheek

eo_mm, using

other PLSS/

OPS

Comm. with LM !

NO

PROCEDURE REMARKS

EVAPROCEDURE

JDoes MSFN

have voice

from EVA

YES

1i

_@EVA ensureRCU PTT

switch in

MAIN posi-

tion

Comm. restored

YES

i r

To step II

next page

i EVA "A" MODE

@- FAILED OR LM

FAILED

• CONFIGURE LM

FOR "B" MODE

POS_EVAPROCEDURE

YES

LM FAILED

EVA RCU t'_

SWITCH AC-

CIDENTALLY

: SET TO OFF

L

To step 16 To step 15

next page next page


CSD-A-789-(2)I]3.APOLLOOPERATIONSHANDBOOK-EMU

SYMPTOMJI

Possible causes:

continued)

g. EVA RCU mode

select "A"

wafer failed

h. EVA antenna

failed

i. EVA trlplexer l

come,on portI

failed

J. Sult electri-

cal harness

failed

III

BASIC DATE

I

I

co,m. carri er

Comm. restored

PROCEDUREi

NO

.r ,.

J @ LM OR SUITi ELECTRICALHARNESS

J FAILED

i

IliJJ I • EVA swap backi to original

RCU

I,.,

J Comm. restored

J NO

i

iii iml

EVA RCU "A"

WAFER MODE

SELECTOR

FAILED


m

I

i YES L

E%'A COMM, !

CARRIER i

FAILED !I

J EVATRZFLZXERIFAILED •

May 1969

i

_!YE3

I

EVA RCU V0X

CIRCUIT

FAILED

• EVA swap back

to original

OPS

Comm. all right

I

NO

i

_F

EVA ANTENNAFAILED

CHANGE DATE

• Swap RCU

• EVA operates in

MAIN

Comm. all rightYES

NO

i|

EVA VOX

CIRCUIT

' FAILEDi

_ ,,

REMARKS

JUNE1971 PAGE 5-38 -.

c

CSD-A-789-(2) ]_APOLLO OPERATIONS HANDBOOK-EMU

SYMPTOM II PROCEDURE

EMU 21

.GTa168P/

GT8268P PGA

pressure

<3.7 psid and

apparently

steady (no

•;arnlng tone )

Possible causes

a. GT8168P/

GT8268P

failed

b. PLSS 02

regulator

shift/

degraded

' c. EMU leak

I

I

I

I"

JiIII --III,IiIIiiIIiiI

i EVA PROCEDURE

GT8168P/GT8268P YES GT8182P/GT8282P YES High 0o flow ila_ NO

PGA pressure _ PLSS 0 2 pressure _ "0" (0 - "O")

>3.1 paid abnormal 2 ii

q q ' 161p Hzgh 0 flo quT8182P/GT8282P YES 2 YES WARNING

PLSS O pressure _ flag "O" _ _N_V_ "_ATT.17'_

abnorm21_ (02 - "0") and ..........

low PGA pressure

flag "0"

(PEgS - "O" )NO

-- N-_---I

(J ' . Esl

PGA pressure J AIAP_4 _ E_MU

gage <3.7 psia -- I MODULE _ LEAK !

I POWrR _ I

• lex arms YI _ GT8168P/GT8268F i • Actuate

-_ _,_P_Es_ o,_lure gage j FAILED !

respond I i

PLSS 2,,_P,_,,,_1_t/,,,_o,.,_,_o,,! Go to _WU ,

OAGE_'_D F "1/ sR_rT/ ! _tep.,

Actuate

oPs

i

©

REMARKS

PLSS 0 2 pressure

regulator regulates the

PGA to 3.7 psid minimum

if flow is 0.07 to

o.7 Zb/br.

BASIC DATE May 1969 CHANGE DATE JUNE 1971 PAGE 5-39

SYMPTOMI

I

EMU 22, "J

I

2GT8168P/

GT8268P _A

press. _h.O

psld I

I

Possible causes:

a. Regulator

fails open

or shifts

set point--

b. GTSI68P/

GT8268P

High 0 2 flow

flag "0" (after

5 se_); or

GT8182P/

GTB282P PLSS

02 pressure or

PLSS 02 quantity

indicator de-

creasing rapidly

CSD-A-789-(2) []


PROCEDURE REMARKS

EMERGENCY PROCEDURE

,jPLSS 02 PRESS.

I REGULATORFAILED

i OPeN ORSHIFTED SET

POINT

©?

1

YES _@ Actuate 0PS

1

i!

i

I

fails

BASIC DATE

.L=.............! ,mm mmmmmlmm|

EVA PROCEDURE'r

Does PGA press. SHIFT IN PLSS

gage agree vith _ i 0 2 REGULATEDGTSIgSP/GT8268P YES

PGA press, PRESS.

I QI

Reduced mobility PGA PRESS. GAGE

!or hear relief _ FAILED

vlv relieving YES

QIf

GT8168P/GT8268P

_A PR[SS.

FAILED

May 1969

P!_S 0 2 pressure

regulator regulates

to 4.0 psid maximum

to PGA,'

PGA pressure

relief valve

cracks at

5.0 to 5.75 psid.

oThe PLSS 02 shutoff

valve should be

CLOSED if possible.

If additional

mobility is

needed, open

purge valve

to reduce FGA

pressure to

>3.h psid.

®

Upon returning

to the LM, steps

7 and 8 can he

verified by con-

necting the blue

PLSS gas con-

nector to the

OPS pressure

regulator checkout

stowage plata.

CHANGE DATE JUNE1971 PAGE 5-40 ,

I |r

SYMPTOM

EMU 23

GTBI82PI

GT8282P

PLSS 02

pressure

abnorz_al

(no warning

tone )

Fossible causes:

a. GTSI82P/

GT8282P

failed

b. PLSS 0 2

pressuresensor

failed

c. _._ leak

d, PLSS 0 2

pressure

regulator

failed open

e. High 0 2 usag 4

BASIC DATE

CSD-A-789-(2) m


PROCEDURE

Q

_GT8168P/GT8268P

"11" I PGA pressure

>5.7 psld

__J .o

GO to step 21

next page

=jL_PGA pressure

gage >3.7 psia

EVA PROCEDURE

Q

GT8] 68r/GTS268P _ H_ gh 02 f] ow

I I F'GA pressure I I fl,_ "o"

I I >h'O Psld I l (02- "0")

INO _NO

oo[ ooag "0" JJ SENSOR FAILED

2 - "0" ) I[

SS 02 PRESS-

E REGULATOR

L FAILED OPEN

JWARNING TONE

FAILED

Actuate OPS

Close PLSS

02 shutoff

vlv

t

_ t

_ 15

] PGA pressure I " J flag "0"

gh 02 flow _,fJ LEAK

l flag "0" (0 2

J - "O") and

J low PGA press-I ure flag "O"

ate OPS

ITo step 2_

next page

May 1969 CHANGE DATE JUNE 1971

REMARKS

®PLSS 02 pressure

regulator regulatesthe PGA to

3.85 ± 0.15 psld

if the flow is

0.07 to 0.7 ib/hr.

PAGE 5-41

CSD-A-789-(2)FFIAPOLLOOPERATIONSHANDBOOK-EMU

SYMPTOMJ PROCEDURE REMARKS1I EVA PROCEDURE(Continued)

I

quantity Monitor

I I indicator a4_rees GT8182P/

J with GTS182P/ GT8282P

I I GT8282P PLSS PLSS 02

I IU2press"press,

t| i! i lllll i i in i mini Jill Ilmll i m | n| I

POST-EVA PROCEDURE

J Nr• Recharge

PLSS 02

GTS182P/

GT8282P PLSS

0 2 press, yE _

shows recharge

I [0

2I_,-_ PLSS 0 2

II QUANT_YII _NDZCAWOR

lJ FAILED

l Open purgevalve to LOW

High 02 flow

flag "0" (0 -"0" ) 2

i

lr_5

N .,_.02 ]FLOW SENSOR

FAILED

_at; Go to

p 5, EMU 2,

e 5-7

3_ PLSS 02

II PRESSUREII ;_uc_

lJ FAILED

H LEAK

I BETWEEN

I PLSS 02

J SHUTOFF VALVE

I AND HIGH 02

I FLOW SENSOR

• PLSS 0 2

shutoff

valve - CFF

• Recharge

PLSS 0 2

GT8182P/

GT8282P

PLSS O2

press.shows re-

charge

GTSI82P/

GT8282P

pLSS 0 2

pressure

stable after

50 rain

I)__o_

BASIC DATE. May 1969 CHANGE DATE JUNE 1971 PAGE 5-42

I I I

CSDLA-789-(2)1"!7APOLLO OPERATIONS HANDBOOK-EMU


EMU 24 EVA PROCEDURE

GT811OP/

GT8210P

feedwater

pressure

<1.2 psia

(no warning

Cone) while

using primary

fleedwater

Possible causes:

a. G78110P/

GT8210P

fai led

ib. Sublimator

breskth rough I

c. H20 separ- J

ator blocked

d. Depleted prl-

mary feed- Iwater reser-

voir I

e. Blockage at Iprimary-feed-

water bladder Ioutlet

f, Feedwater I

pressure IXducer

fai]ed

IIg. Primary H20

shutoff and I

relief valve Iclosed

iIIIIIIIIIIItiI

BASIC DATE

IIII

,IllGT8170T/GT8270T

02 temp

I >50 ° F andrising

I

IGT8210P

J FEEDWATERPRESSURE

FAILED

Go to

steF 9,

_4U 4,

page 5-12

YES

JGT815hT/GT8254T

LCG H20 tamp

>50 ° F and

rising

3T8196T/GT8296T

LCG H20 AT

<_o F and dropping

(H20 diverter in

'4AX. COOLING)

YES

,NO

LOw feedwater YES

pressure flag "_ WABNING TONE

"A" (H20- "A") FAILED

SNO 11

LOW FEEDWATER Go to step 6,

PRESSURF I _ EMU h,

SWITCH ! page 5-12FAILED J

t

YES

WARNI[_G TONE _._ Low feedwater .,el.

FAILED press, flag

"A" (H20 - "A")

Primary H@O !

shutoff and Irelief valve

open i

NO

13]PRI,_RYH201

S_TOFF AND i

RELI_ VALVE '

C_S_

't

J• H20 diverter

valve - MIN.

• Primary H20 t

shutoff and i

relief valve - I

OPEN

(Wait _ mln or

until flag clears

before changing

diverter valve

position)

N0

121LOW FEEDWATER

PRESST/BE SWITCH

FAILED

May 1969 CHANGE DATE JUNE 1971 PAGE 5-43

CSD-A-789.(2}IUAPOLLOOPERATIONSHANDBOOK-EMU

ISYMPTOM j PROCEDURE REMARKS

J EVA PROCEDUREEMU 25

II

GTSIIOP/GT8210P

feedwater press. J

<l,___22psia (no rwarning tone)

while using i

8uxili_feed-jJwater

II

Possible causes:

Is. GTSIIOP/ J

GT8210P

failed J

b. Subllmator l

breakthrough

ie. H20 separator

blocked J

d. Both feed- Jwater reser-

voirs Jdepleted

e. Blockage J

between [bladder and

press, xdueerif. Feedwater

pressure J

xducer

failed J

g, R20 shutoff I

and relief

valves closed

(either or

both) J

IIII

IIIIIIIIII

i_ GT81yOT/

GT8270T YES

02 temp

>_0 ° F and

rising

l NO

!JGTglIOP/

GT8210P

FEEDWATER

PRESS.

FAILED

GO to step 12,

EMUS,

page 5-15

tOi/bIf additional

cooling is

required,

activate BSLSS

_ YES

Auxiliary

H20 shutoff

i and relief

i valve open

$,,NO ......

AUXILIARY

H20 SHUTOFF

AND RELIEF

VALVE CLOSED

2-_ GTSIShT/CT8254T

LCG 1120 temp _o F

and rising

GT8196T/GT8296T

LCG H20 AT

<_o F and dropping

(H20 diverter in

MAX. COOLING)

Y E "J

NO

Low feedwater iYES WARNING

pressure flag, i ''1_

"A"(H20- "A')I i TONEFAILEDJ

_NO $

J NLOW FEEDWATER Go to step 6,!

PRESS. SWITCH _ _MU 4,

FAILED page 5-12

I Low feedwater

_ARNING YES press, flagTONEFAIL_ "A"

(H 20 - "A" )

Primary H20YES

.@------ shutoff and

relief valve

open

:jPRIMARY g20

S HU%_3 FF AND

RELIEF VALVE

CLOSED

d• R20 diverter

valve - MIN.

• He0 shutoff

and relief

valves -

OPEN

(Wait 4 min or

until _lag clears

before changing

diverter valve

pcsitlon)

{0

LOW F_EDWA._R

PR ESSUR, E

SWITCH FAILED

[email protected]

©Actuation of the

OPS and opening of

the purge valve

to HIGH flow may

also be used if

BS[_-qS is not

carried. If PLSS 02

valve remains open

during purge mode,

POS consumables may be

depleted.

QSublimator

restart may be

attempted at

this point if

desired

(procedure for

restart is given

in step 7, EMU 5,

on page 5-14).

BASIC DATE MAY 1969 CHANGE DATE JUNE 1971 PAGE 5-44

CSD-A:789-(2)1I[APOLLO OPERATIONS HANDBOOK-EMU


EMU 26 EVA PROCEDURE

GT815hT/

GT8254T

LCG H20

temperature

>50 ° F

(dlverter valve

inMAX: and no

warning tone)

Possible causes :

a. GTSI54T/

GT8254T/

failed

b. H2D shut-

off and re-

lief valve

closed

c. Sublimator

breakthrough

d. H2C separa-

tor blocked

e. Depletedfeedwater

reservoir

f. Blockage

between

feedwater

bladder and

sublimator

v :

JGT8196T/

GT8296T

LCG H20 AT

<_o F and

GTSI7OT/

GT8270T 02

temperature

>50° F

_GT815hT/

J GT825hT

I LCG H20 TEM-

li PERATT FAILED

Go to

step i,

_4U5,

page 5-14

i

T8210P feed- YESater press.

i.___22psla

.__0

I I "

WARNING Low feed-

TONE water

pressureFAILED flag "A"

---II 1"°

YES Is _MU oper-ating on LOW FEED-

auxiliary WATER PRESS.feedwater SWITCH FAILED

NO

Go to

step I,

D4Uh,

page 5-12

CHANGE DATEBASIC DATE May 1969 JUNE1971 PAGE 5-45

SYMPTOM

CSD-A-789-(2)


PROCEDURE REMARKSu, ,.

POST-EVA PROCEDURE

@ Replace

battery

(from other

PLSS )

GTIhlV/GT82hlV

PLSS battery

voltage >16.0 V dc

. _o_J

GT81hlV/GT82hlV

Pi_S BATTERY

VOLTAGE FAILED

i

DEGRADED

BATTERY

CSD-A-789-(2) ]]]_APOLLO OPERATIONS HANDBOOK-EMU

SYMPTOM II PROCEDURE REMARKS

EMU 31 EMERGENCY PROCEDURE

G_817ffr / 3]

GT8270T

02 tempera-.p. WARNING TONE

ture <38 ° F _ES FAILED(no w_'_-i n_

tone)

Possible causes :

a. GT81yOT/

GT8270T

failed

b. Fan failed

or degraded

c. High PGA

pressure

drop

d. Flow re-

striction

in vent

loop

BASIC DATE

II ,I

l' P ss81hoc/

GT8240C Low vent flow

I' _ battery current flag "P"

I I >_.0 A or (VENT "P")

NO J NO

I__ "Fa°°ff

>5 sec

FANDEGRADED VENT "p" and

WSr niP_ tone

NO

7

]J _-_ow sE_suR

1 FAILED

8141v/

T82blV

LSS battery

oltage

16.0 V de

l_o

GT8170T/

OT827GT

O2 TEMPERATURE

FAILED , OR HIGH

PGA AP, OR FLOW

HESTRICTION IN

VENT LOOP

FD• Actuate OPS

• Open purgevalve to LOW

FAN

FAILED

m_ml

EVA PROCEDURE

_Fan off >5 secVENT "P" and

warning tone

NO

LOW VENT FLOW

SENSOR FAILED

A_ DEGPADED

BATTERY CAUSED

FAN FAILURE

n l

FAILING

-e- BAKERYYES CAUSED FAN

DEGRADATION

• Actuate OPS

• Open purgevalve to LOW

• Activate

BSLSS

©Actuation of

the OP8 and opening

of the purge

valve to NIGH

flow may aleO be

used if BSLSS

is not cazrled.

If PLSS O 2 valve

remains Open

_uring purge mode,POS consumables

may be depleted.

tl

May 1969 CHANGE DATE JUNE1971 PAGE 5-53

CSD-A-789-(2) I_APOLLO OPERATIONS HANDBOOK-EMU

ISYMPTOM. j

EMU 32': l

I

GT827OT'

o_.p I!' _5°°F Vand rising i

(No warning J

tone) i J

I

Possible causes: I

a. GT8170T/ J

GT8270Tfailed J

b. Subl imat or J

breakthrough j

c. H20

separator J 4_4J

blocked

d. Depletedfeedwater !

ireservoir

Ie. Blockage be- I

tween feed- Jwater bladder

and Jsublimator _

f. H20 shutoff

and relief J

valve closed J _

IIIIIIIIIIIIIIIII

GT811OP/

GT8210P

feedwater

pressure

<l.2psia

NO

GT815hT/

GT825hT

LCG H20 temp

F and

6T/

GT8296T

LCG H20 AT

F (H20

dlverter in

MAX COOLING)

NO

GT817OT/

GT82TOT

02 TD_P

FAILED

PROCEDURE REMARKS

EVA PROCEDURE

LOW

feedwat er WARNINGpressure flag _ TONE

YES ,,_,, YES FA [LED

(H20 - "A")

YES

NO

LOW

FEEDWATER

PRESS.

SWITCH

FAILED

LOWI

feedwmter IYES

pressure flag"A" "_

(H20 - "A")

NO

FEEDWATEH

PRESSURE

SENSOR

FAILED

GT811OP/

GT8210P

FEEDWATER

PRESSURE

FAILED AND

WA2NING

TONE

FAILED

Is _ oper- YES Go to

ating on _ step i,

auxiliary I _U 5,

feedwater I page 5-14

J

S NO

l_ Go to

step I,

EMU h,

page 5-12

[

=I

_=

t

BASIC DATE,NASA -- MSC

May I%9 CHANGE DATE JUNE1971 PAGE 5-54

NASA--MSC

Documents

APOLLO OPERATIONS HANDBOOK EXTRAVEHICULAR … TM-X-69515.pdfAPOLLO OPERATIONS HANDBOOK-EMU FOREWORD This handbook, sections h and 5, of the Apollo Operations Handbook (AOH) series,