K-Patents PR-14038 User manual

Cooling cover PR-14038
Document/Revision No. IM-EN-CCPR43/1.04
E󰀨ective: April 23, 2019
Instructions

Cooling cover instrucon manual
Document/Revision No. IM-EN-CCPR43/1.04 Eecve: April 23, 2019

1 Introducon 1
© Copyright K-Patents 2019. All rights reserved.
1 Introducon
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
When wishing to dispose of an obsolete instrument, please observe local
and naonal regulaons and requirements for the disposal of electrical
and electronic equipment. The cooling cover can be recycled with other
metallic waste of the same type.

2Cooling cover instrucon manual
Document/Revision No. IM-EN-CCPR43/1.04 Eecve: April 23, 2019
2 Installaon
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 the working table and the person are grounded. Wear wrist or foot ground-
ing equipment.
ESD
ESD
P4-034
Wear wrist or foot grounding equipment
Figure 2.1 Grounding the work environment

2 Installaon 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

4Cooling cover instrucon manual
Document/Revision No. IM-EN-CCPR43/1.04 Eecve: 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 t the slot) and screw on the circuit
board. Reaach the cable connectors to the circuit board.
5. Insert cooling cover into the refractometer, add cover plate and fasten with the new
longer screws. Note that there is no O-ring between the cover plate and the cooling
cover.

2 Installaon 5
© Copyright K-Patents 2019. All rights reserved.
1. Remove cover plate and detach cable connectors from the circuit board 2. Then remove circuit board, desiccant dryer and O-ring from the cover plate
3. Install new O-ring and desiccant dryer supplied with the cooling cover to cooling cover and then attach circuit board
4. Reattach cable connectors to circuit board and insert cooling cover into Refractometer and attach with cover plate
Cover plate
T20
T10
Cover plate
(do not reinstall O-ring)
M4x25 Torx A2 DIN7895 screws (supplied with cooling cover) T20
Cooling cover
Cooling cover
O-ring
O-ring
Desiccant dryer
Desiccant dryer
Circuit board
Cable connectors
Circuit board
Cable connectors
P4-032

6Cooling cover instrucon manual
Document/Revision No. IM-EN-CCPR43/1.04 Eecve: April 23, 2019
2.2 Connecng cooling water
Cooling water recommendaons
Temperature 5-25°C (41-77°F)
Pressure max. 6 bar (87 psi)
Flow max. 0.25 l/min (0.7 GPM)
The ow can be quite a bit below maximum 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 connecon is a 1/8" NPT female thread. Connect inlet to one and outlet to
the other connecon, it doesn’t maer which way they are connected, because cooling
cover is symmetrical.
P4-033
1/8” NPT (F) Thread
Figure 2.3 Connecng the coolant hose

2 Installaon 7
© Copyright K-Patents 2019. All rights reserved.
2.3 Removing the cooling cover
If you want to remove the cooling cover, use the two M5x20 pulling screws: rst 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

8Cooling cover instrucon manual
Document/Revision No. IM-EN-CCPR43/1.04 Eecve: April 23, 2019

K-Patents Oy
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