4700 Refrigerated Sampler Service Guide
Section 3 Refrigeration System
3-6
6. Attach the new cable to P5 on the control board.
7. Align the control panel over the mounting holes and secure
it with the mounting screws. Torque screws 1.8 to 2.0 Nm
(16 to 18 in/lbs).
8. Using the two plastic cable ties, mount the banded sensor
on the sixth coil of the evaporator as shown in Figure 3-1.
9. Gently press the unmarked sensor into the white plastic
holder behind the power supply plate until it snaps into
place (see Figure 3-7).
10. Close the rear compartment (see Section 1.9
Closing the
Rear Compartment
).
11. Restore AC power. After 30 minutes, perform the refrigera-
tor temperature diagnostic test (see Section 5.1.8). As the
refrigerator cycles off and on, the reported temperature
may read above or below the set temperature. However, the
average reported value should be the same as the set tem-
perature.
Figure 3-7 Air temperature sensor mounting
(seen from rear with power supply removed)
You can also validate proper operation of the temperature sensor
cable assembly by performing a manual check:
1. Open the door reach through the lower right air vent, pull
the air temperature sensor (the unmarked sensor) down
through the vent, and place it in an ice water bath.
2. The sampler should report a temperature value of 0°C.
3. Carefully push the sensor back up into its holder until it
snaps into place (Figure 3-7).
Summary of Contents for 4700
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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 ...
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