Thermo Electron 8600 Series, Troubleshooting Service Manual

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iii
Table of Contents
Section 1 – General Operation
1.1 Initial Start Up......................................1-1
1.2 Equipment Explanation.........................1-1
1.3 Operating Pressure
“High and low stage systems”...............1-1
Section 2 – Troubleshooting Charts
2.1 Probe 1,2,3, and 4 failure alarm
(Single) ...............................................2-1
2.2 Probe 1,2,3, and 4 failure alarm
(All probes) ..........................................2-1
2.3 Unit will not communicate with alarm
system .................................................2-2
2.4 Display/Keyboard not functioning .......2-3
2.5 Door ajar alarm....................................2-4
2.6 No door access ....................................2-5
2.7 Low battery alarm................................2-6
2.8 Noise ...................................................2-6
2.9 Hot condenser alarm ............................2-7
2.10 High stage system failure alarm ...........2-8
2.11 Power failure alarm..............................2-9
2.12 Wrong power .......................................2-10
2.13 Low Temperature.................................2-10
2.14 High temperature alarm or system not
maintaining temperature ......................2-11
2.15 Troubleshoot compressor .....................2-13
2.16 Voltage Compensation Failure .............2-14
Section 3 – Charts and Schematics
3.1 Analog Output Reference Table .............3-1
3.2 RTD Temperature vs. Resistance ...........3-2
3.3 Pressures vs. Cabinet Temperature.........3-3
3.4 Refrigeration Schematics .......................3-4
3.5 Electrical Schematics ............................3-6
3.6 Micro Board ..........................................3-8
3.7 High Voltage Board ...............................3-8
Section 4 -Hidden Functions
4.1 Hidden Test ........................................... 4-1
4.2 Hidden Calibration ................................ 4-2
Appendix A - Glossary
Glossary of terms ........................................ A-1
Appendix B
Compressor Information .............................. B-1