Cooling cover PR-14038

Document/Revision No. IM-EN-CCPR43/1.04Effective: April 23, 2019

Instructions

Cooling cover instruction manual

Document/Revision No. IM-EN-CCPR43/1.04 Effective: April 23, 2019

1 Introduction 1

© Copyright K-Patents 2019. All rights reserved.

1 Introduction

The cooling cover adds water cooling to a PR-43 refractometer when the refractometer

temperature threatens to rise too high for its electrical components. A cooling cover

is needed when the ambient temperature is over 45°C (113°F) or the refractometer

internal temperature alarm has been triggered, which happens when the internal tem-

perature rises over 65°C (149°F). It is recommended to use cooling cover when internal

temperature rises above 60°C (140°F). The cooling cover is installed between the cover

plate and the sensor cover.

Figure 1.1 Cooling cover

1.1 Disposal

Whenwishing to dispose of an obsolete instrument, please observe local

and national regulations and requirements for the disposal of electrical

and electronic equipment. The cooling cover can be recycled with other

metallic waste of the same type.

2 Cooling cover instruction manual

Document/Revision No. IM-EN-CCPR43/1.04 Effective: April 23, 2019

2 Installation

2.1 Installing the cooling cover

The cooling cover delivery contains the following parts:

• Cooling cover

• 2 x screw M4x25 Torx DIN7895

• O-ring PR-14002-FPM

• desiccant (dryer)

• 2 x M5x20 pulling screw

Important: Before opening refractometer the cover and touching the electronic parts,

ensure that theworking table and the person are grounded. Wearwrist or foot ground-

ing equipment.

ESD

ESD

P4-034

Wear wrist or foot grounding equipment

Figure 2.1 Grounding the work environment

2 Installation 3

© Copyright K-Patents 2019. All rights reserved.

To install the cooling cover:

1. Remove the cover plate retaining screws.

2. Remove the cover plate with M5x20 pulling screws.

Figure 2.2 Removing the cover plate with pulling screws

4 Cooling cover instruction manual

Document/Revision No. IM-EN-CCPR43/1.04 Effective: April 23, 2019

3. Detach the cable connectors from the circuit board. Then unscrew the circuit board.

Remove the desiccant and O-ring, they are not needed any more.

4. Add the new O-ring and the new desiccant to the cooling cover (fold the edges of

the desiccant under the package to make it fit the slot) and screw on the circuit

board. Reattach the cable connectors to the circuit board.

5. Insert cooling cover into the refractometer, add cover plate and fastenwith the new

longer screws. Note that there is no O-ring between the cover plate and the cooling

cover.

2 Installation 5

© Copyright K-Patents 2019. All rights reserved.

1. R

emov

e co

ver

plat

e an

d de

tach

cab

le c

onne

ctor

s

from

the

circ

uit b

oard

2. T

hen

rem

ove

circ

uit b

oard

, des

icca

nt d

ryer

a

nd O

-rin

g fr

om th

e co

ver

plat

e

3. In

stal

l new

O-r

ing

and

desi

ccan

t dry

er s

uppl

ied

wit

h th

e co

olin

g co

ver

to c

oolin

g c

over

and

then

att

ach

circ

uit b

oard

4. R

eatt

ach

cabl

e co

nnec

tors

to c

ircu

it b

oard

and

inse

rt c

oolin

g co

ver

into

Ref

ract

omet

er

and

att

ach

wit

h co

ver

plat

e

Cove

r pl

ate

T20

T10

Cove

r pl

ate

(do

not r

eins

tall

O-r

ing)

M4x

25 T

orx

A2 D

IN78

95sc

rew

s (s

uppl

ied

with

cool

ing

cove

r) T

20

Cool

ing

cove

r

Cool

ing

cove

r

O-r

ing

O-r

ing

Des

icca

nt d

ryer

Des

icca

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Circ

uit b

oard

Cabl

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nnec

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Circ

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Cabl

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nnec

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P4-0

32

6 Cooling cover instruction manual

Document/Revision No. IM-EN-CCPR43/1.04 Effective: April 23, 2019

2.2 Connecting cooling water

Cooling water recommendations

Temperature 5-25°C (41-77°F)

Pressure max. 6 bar (87 psi)

Flow max. 0.25 l/min (0.7 GPM)

The flow can be quite a bit belowmaximum as long as the sensor internal temperature

stays below 60°C (140°F). K-Patents recommends that used water is directed to a drain.

The coolant connection is a 1/8" NPT female thread. Connect inlet to one and outlet to

the other connection, it doesn’t matter whichway they are connected, because cooling

cover is symmetrical.

P4-033

1/8” NPT (F) Thread

Figure 2.3 Connecting the coolant hose

2 Installation 7

© Copyright K-Patents 2019. All rights reserved.

2.3 Removing the cooling cover

If youwant to remove the cooling cover, use the twoM5x20 pulling screws: first remove

the cover plate retaining screws and the cover plate. Then remove the cooling cover

with the pulling screws.

Figure 2.4 Removing the cooling cover with pulling screws

8 Cooling cover instruction manual

Document/Revision No. IM-EN-CCPR43/1.04 Effective: April 23, 2019

K-Patents OyP.O. Box 77FI-01511 Vantaa, Finlandtel. +358 207 291 570fax +358 207 291 577info@kpatents.com

K-Patents, Inc.1804 Centre Point Circle, Suite 106Naperville, IL 60653, USA tel. (630) 955 1545fax (630) 955 1585 info@kpatents.com

K-Patents (Shanghai) Co., LtdRoom 1509,Tomson Commercial Building, No.710Dongfang RDPudong District, Shanghai, Chinatel. +86 21 5087 0597/0598fax +86 21 5087 0598

www.kpatents.com