4700 Refrigerated Sampler Service Guide
Section 4 CPU and Power Supply
4-22
Note
When reinstalling the fan, ensure that the red power connector
goes to the red wire terminal and the black power connector
goes to the black wire terminal (see Figure 4-12).
5. Route the CPU CBA connector cable up through the refrig-
erator and into the top compartment. Connect the har-
nesses to P11 and P14 on the back of the control panel
(refer to Figure 4-2).
6. Coat the threads of the black bulkhead connector with 737
RTV sealant (800-1002-03). Screw the bulkhead connector
into the refrigerator cabinet by hand until the threads bot-
tom out. Smooth the RTV out to cover the joint.
7. Hand-tighten the cord grip fitting onto the bulkhead fit-
ting.
8. Close the rear compartment (see Section 1.9
Closing the
Rear Compartment
).
4.6 Line Cord
Although the line cord comes attached as part of the power
supply assembly, it is possible to replace the line cord only if it
becomes damaged.
Tools
T-15 torx screwdriver,
5
/
16
" nut driver, 1" open-end wrench
(approximate size; may vary slightly)
4.6.1 Line Cord Removal
To access the line cord connections, you must first remove the
power supply from the sampler. Follow the instructions in
Section 4.5.3, observing all warnings and cautions.
1. Remove the eight
self-tapping
torx screws holding the
back cover on the mounting plate, and remove the back
cover (Figure 4-15).
CAUTION
Do not remove the Phillips screw in the center of the back
cover. This is for testing purposes only, and must remain in
place to keep the unit sealed.
68-4700-050
Summary of Contents for 4700
Page 2: ......
Page 6: ...Isco 4700 Refrigerated Sampler Service Guide Safety iv ...
Page 12: ...4700 Refrigerated Sampler Service Guide Table of Contents x ...
Page 30: ...4700 Refrigerated Sampler Service Guide Section 1 Introduction and General Guidelines 1 18 ...
Page 60: ...4700 Refrigerated Sampler Service Guide Section 2 Sample Delivery System 2 30 ...
Page 108: ...4700 Refrigerated Sampler Service Guide Section 4 CPU and Power Supply 4 26 ...
Page 124: ...4700 Refrigerated Sampler Service Guide Appendix A Electrical Diagrams A 2 ...
Page 126: ...4700 Refrigerated Sampler Electrical Wiring A 4 Figure A 3 4700 wiring diagram 230V ...
Page 128: ...4700 Refrigerated Sampler Electrical Wiring A 6 Figure A 5 4700 CPU schematic diagram ...
Page 131: ...4700 Refrigerated Sampler Appendix B Replacement Parts List B 3 ...
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