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Cooling cover PR-14038
Document/Revision No. IM-EN-CCPR43/1.02Effective: September 5, 2017
Instructions
Cooling cover instruction manual
Document/Revision No. IM-EN-CCPR43/1.02 Effective: September 5, 2017
1 Introduction 1
© Copyright K-Patents 2017. 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 name-
plate and the sensor cover.
Figure 1.1 Cooling cover
2 Cooling cover instruction manual
Document/Revision No. IM-EN-CCPR43/1.02 Effective: September 5, 2017
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)
Important: Before opening refractometer the cover and touching the electronic parts,
ensure that theworking table and the person is grounded. Wearwrist or foot grounding
equipment.
ESD
ESD
P4-034
Wear wrist or foot grounding equipment
2 Installation 3
© Copyright K-Patents 2017. All rights reserved.
To install the cooling cover:
1. Remove the nameplate. 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.
2. Add the new O-ring and the new desiccant to the cooling cover and screw on the
circuit board. Reattach the cable connectors to the circuit board.
3. Insert cooling cover into the refractometer, add nameplate and fasten with the new
longer screws. Note that there is no O-ring between the nameplate and the cooling
cover.
4 Cooling cover instruction manual
Document/Revision No. IM-EN-CCPR43/1.02 Effective: September 5, 2017
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
nt d
ryer
Circ
uit b
oard
Cabl
e co
nnec
tors
Circ
uit b
oard
Cabl
e co
nnec
tors
P4-0
32
2 Installation 5
© Copyright K-Patents 2017. All rights reserved.
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 2.1 Connecting the coolant hose
K-Patents OyP.O. Box 77FI-01511 Vantaa, Finlandtel. +358 207 291 570fax +358 207 291 [email protected]
K-Patents, Inc.1804 Centre Point Circle, Suite 106 Naperville, IL 60653, USAtel. (630) 955 1545fax (630) 955 [email protected]
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
