Task 213100-05

CARD ZONE INTERVAL

SKILL ACCESS

TASK21-31-00-720-801-A Functional Test of the Positive and Negative Delta P Protection of the Safety Valves FIN : 316HL , 317HL , 318HL

RefertotheMPDTASK:213100-05 FUNCTIONAL CHECK OF POSITIVE AND NEGATIVE DELTA P PROTECTION OF SAFETY VALVES

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

NOTE: If the test set NORD MICRO PN 0622-19857-01 is not available the test set NORD MICRO PN 0622-19857-02 can be used and visa versa. If either one of the test sets is not available send the safety valves to the vendor (NORD MICRO).

1. Reason for the Job

2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION No specific AR ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE No specific AR ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE No specific AR AIR SOURCE 0.02 BAR (0.3 PSI) No specific AR AIR SOURCE 1.7 TO 2 BAR (25 TO 30 PSI) - FILTERED, DRY No specific AR SAFETY CLIP - CIRCUIT BREAKER No specific AR TEST UNIT - VALVE ACTUATING (0622-19857-01 TYPE) (0622-19857-02) 1 TEST SET - VALVE ACTUATING

B. Work Zones and Access Panels

ZONE/ACCESS ZONE DESCRIPTION 270 AFT CABIN UTILITY AREA 312AR, 811

C. Referenced Information

REFERENCE DESIGNATION 21-31-00-710-805-A Operational Test of the Position-Indication of the Safety Valves 24-41-00-861-801-A Energize the Aircraft Electrical Circuits from the External Power A

MECH. INSP.** ON A/C ALL

A/C Reg.: ALL

JOB CARD AVA - A330

TITLE: 21-31-00-720-801-A - Functional Test of the

Positive and Negative Delta P Protection of the Safety Valves ...

MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501

EFF : Page 1 of 7DATABASE REV DATE : Oct 01/13

PRINT DATE : Nov 08/13 Local Time

Subtask21-31-00-861-055-A

(Ref.AMMTASK24-41-00-861-801). Subtask21-31-00-010-057-A

Subtask21-31-00-865-056-A

Subtask21-31-00-010-058-B

safety valve,

safety valve and,

safety valve.

24-41-00-861-801-A-01 Energize the Aircraft Electrical Circuits from the APU (APU Started with APU BAT)

24-41-00-861-801-A-03 Energize the Aircraft Electrical Circuits from the External Power A and B 24-41-00-861-801-A-04 Energize the Aircraft Electrical Circuits from the APU (APU started with

External power A) 24-41-00-861-801-A-05 Energize the Aircraft Electrical Circuits from the External Power B 24-41-00-862-801-A De-energize the Aircraft Electrical Circuits from the External Power A 24-41-00-862-801-A-01 De-energize the Aircraft Electrical Circuits from the APU 24-41-00-862-801-A-03 De-energize the Aircraft Electrical Circuits from the External Power A and

B 24-41-00-862-801-A-04 De-energize the Aircraft Electrical Circuits from the External Power B Safety Valve - Differential Pressure Test SHEET 1

3. Job Set-up

A. Energize the aircraft electrical circuits

B. Get Access to the Avionics Compartment(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the access door 811. (2) Open the access door 811.

C. Open, safety and tag this(these) circuit breaker(s):

PANEL DESIGNATION FIN LOCATION721VU CAB PRESS MAN 3HL P11 722VU CPC 2 2HL U44 742VU CPC 1 1HL A66

D. Get Access(1) Put the ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE in position below the access door 312AR. (2) Open the access door 312AR. (3) In the cabin get access to:

(a) FOR 316HL (SAFETY VALVE)

(b) FOR 317HL (SAFETY VALVE)

(c) FOR 318HL (SAFETY VALVE)

4. Procedure

A/C Reg.: ALL

JOB CARD AVA - A330



MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501



Subtask21-31-00-480-050-A

(Ref. Fig. Safety Valve - Differential Pressure Test SHEET 1)

Adjust the pressure monitor to zero:

A. Functional Test of the Safety Valve (1) Installation of the Test Equipment TEST SET - VALVE ACTUATING(0622-19857-02)orTESTUNIT-

VALVE ACTUATING (0622-19857-01 TYPE).

(a) On the Test Set 1 Make sure that the vacuum controller (10) and the pressure controller (11) are fully closed. 2 Connect these items:

-The pressure input (1) to a AIR SOURCE 1.7 TO 2 BAR (25 TO 30 PSI) - FILTERED, DRY. -The vacuum input (2) to a AIR SOURCE 0.02 BAR (0.3 PSI). -The electrical power input connector (3) to a 28V DC power supply. -The test lead to the safety-valve position-switch connector (4). -

The orange colored connector of the flexible hose assembly (26) to the vacuum output connector (5).

-

The green colored connector of the flexible hose assembly (26) to the pressure sense connector (6).

-The green colored connector of the flexible hose (27) to the pressure output connector (7). (b) On the Aircraft:

1 Connect the test lead to the electrical connector (12) of the safety valve (24). 2 Remove the nut (16), the strainer (15) and the washer (14). 3 Put the base plate (18) in a correct position on the bellmouth (17) and close the clamps (19). 4 Make sure that the pivoted pressure connector (21) is in position along the poppet valve outlet (23).

NOTE: You can see this through the cut-outs holes in the base plate (18).

5 Attach the fixed pressure connector (20) until it touches the poppet valve of the safety valve (24). Make sure that the clamps (19) are tight.

6 Adjust the pivoted pressure connector (21) with the adjustment screw (22) until it touches correctly the poppet valve outlet (23).

7 Connect these items: -

The green colored connectors of the flexible hose (27) and the flexible hose assembly (26) to the fixed pressure connector (20).

-

The orange colored connector of the flexible hose assembly (26) to the pivoted pressure connector (21).

-

The neutral colored connector (25) of the flexible hose assembly to the bulkhead connector (13).

(2) Functional Test of the Test Equipment (a) Apply hand pressure at the points A to open the safety valve (24).

-The position indicator lamp (9) on the test set comes on. (b) Push the safety valve (24) to the closed position.

-The position indicator lamp (9) on the test set goes off. (c) For PN 0622-19857-01

A/C Reg.: ALL

JOB CARD AVA - A330



MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501



Adjust the pressure monitor to zero:

Subtask21-31-00-720-050-A


This value must be between 605 mbar (8.77 psi) and 615 mbar (8.92 psi) pressure.

1 Turn the adjustment screw (28) on the panel until the pressure monitor (8) shows zero. (d) For PN 0622-19857-02

1 Press F1 and F2 keys at the same time to enter the function 2 Use the keys AL1 and AL2 to set the zero value. 3 Press F2 key. 4 Press F2 key again to return the display to normal operation.

(e) Slowly open the vacuum control (10) until the indication of the pressure monitor (8) shows a stable value.

NOTE: Do not apply more than 588 mbar (8.53 psi) pressure. A failure to get a stable pressure value is an indication of possible leaks. Check if the fixed pressure connector correctly touches the poppet valve. Check if the pivoted pressure connector correctly touches the poppet valve outlet.

(f) Close the vacuum control (10). (g) Disconnect the orange colored connector at the vacuum outlet (5) to release the pressure in the

system. (h) Connect the orange colored connector to the vacuum outlet (5) again.

B. Functional Test of the Safety Valve

(1) Testing of the Safety Valve (a) Functional Test of the Positive Differential-Pressure Protection

1 Make sure that the value shown on the pressure monitor (8) is set to zero.

NOTE: For adjustment to zero value refer to working step A2c or A2d.

2 Slowly open the vacuum control (10) to apply vacuum. 3 Increase the vacuum until the safety valve opens, and the position indicator lamp (9) on the test set

comes on. 4 When the position indicator lamp (9) comes on, record the value shown on the pressure monitor.

5 Close the vacuum control. 6 Disconnect the orange colored connector at the vacuum output (5) and release the the vacuum. 7 Connect the orange colored connector to the vacuum output (5) again. 8 Do the test with the calibrated safety valve at least 2 times again to make sure the setpoint

adjustment is the same each time. (b) Functional Test of the Negative Differential-Pressure Protection

1 Make sure that the value shown on the pressure monitor (8) is set to zero.

A/C Reg.: ALL

JOB CARD AVA - A330



MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501



This value must be between 5 mbar (0.07 psi) and 18.0 mbar (0.26 psi).

Subtask21-31-00-080-050-A


Subtask21-31-00-860-078-A

NOTE: For adjustment to zero value refer to working step A2c or A2d.

2 Slowly open the pressure control (11) to give a positive pressure. 3 Increase the positive pressure until the safety valve opens, and the position indicator lamp (9) on

the test set comes on. 4 When the position indicator lamp (9) comes on, record the value shown on the pressure monitor.

5 Close the pressure control (11). 6 Disconnect the green colored connector at the pressure output (7) to release the pressure in the

system. 7 Do the negative relief setpoint check at least 2 times again to make sure the safety valve function

is correct.

C. Removal of the Test Equipment

(1) On the Aircraft (a) Disconnect these items:

-

The green colored connectors of the flexible hose (27) and the flexible hose assembly (26) from the fixed pressure connector (20).

-

The orange colored connector of the flexible hose assembly (26) from the pivoted pressure connector (21).

-

The neutral colored connector (25) of the flexible hose assembly (26) from the bulkhead connector (13).

(b) Loosen the screw (22) and disengage the pivoted pressure connector (21) from the poppet valve outlet (23).

(c) Remove the fixed pressure connector (20) from the poppet valve of the safety valve (24). (d) Release the clamps (19) and remove the base plate (16) from the bellmouth (17). (e) Disconnect the test lead from the electrical connector (12) of the safety valve. (f) Remove the base plate (16) and the test lead from the aircraft. (g) Install the strainer (15), the washer (14) and the nut (16).

(2) On the Test Set: (a) Disconnect these items:

-The green colored connector of the flexible hose (27) from the pressure output connector (7). -

The green colored connector of the flexible hose assembly (26) from the pressure sense connector (6).

-

The orange colored connector of the flexible hose assembly (26) from the vacuum output connector (5)

-The test lead from the safety-valve position-switch connector (4). -The electrical power input connector (3). -The pressure input (1) and the vacuum input (2).

D. Aircraft Maintenance Configuration

A/C Reg.: ALL

JOB CARD AVA - A330



MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501



Subtask21-31-00-860-079-A

Subtask21-31-00-865-059-A

Subtask21-31-00-710-060-A

Subtask21-31-00-410-057-B

safety valve,

safety valve and,

safety valve.

Subtask21-31-00-860-070-A

(Ref.AMMTASK24-41-00-862-801).

(1) Do the work steps in Paras. 4. A. B. and C. for the safety valve 317HL.

E. Aircraft Maintenance Configuration(1) Do the work steps in Paras. 4. A. B. and C. for the safety valve 318HL.

F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL DESIGNATION FIN LOCATION721VU CAB PRESS MAN 3HL P11 722VU CPC 2 2HL U44 742VU CPC 1 1HL A66

G. Do the operational test of the safety valves position-indication (Ref.AMMTASK21-31-00-710-805). 5. Close-up

A. Close Access (1) Make sure that the work area is clean and clear of tools and other items.(2) In the cabin close the access:

(a) FOR 316HL (SAFETY VALVE)

(b) FOR 317HL (SAFETY VALVE)

(c) FOR 318HL (SAFETY VALVE)

(3) Close the access door 312AR. (4) Close the access door 811. (5) Remove the access platform(s).

B. Aircraft Maintenance Configuration(1) De-energize the aircraft electrical circuits

(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

A/C Reg.: ALL

JOB CARD AVA - A330



MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501



ORANGE

PRESSURE GAUGE

ORANGE

000,00

PN 0622-19857-01

000,00

PN 0622-19857-02

Test Lead Vacuum Pressure

24

1917

18

14

1615

26

PositionSwitch

InputPower

10

F_MM_213100_5_AAM0_01_00

Figure 21-31-00-991-00200-05-A / SHEET 1 - Safety Valve - Differential Pressure Test ** ON A/C ALL

A/C Reg.: ALL

JOB CARD AVA - A330



MPD-TASK : 213100-05

AMM TASK : 21-31-00-720-801 21-31-00 PB 501



Documents

Task 213100-05