TC110 Series
Water Temperature Control Units 882.03888.00
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09/19/2018
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Chapter 5:
Troubleshooting
5-1
Introduction
The utmost in safety precautions should be observed at all times when working on or
around the machine and the electrical components. All normal trouble-shooting must be
accomplished with the power off, circuit breakers turned off, and with the machine tagged
as out of service.
The use of good quality test equipment cannot be over-emphasized when troubleshooting is
indicated. Use a good ammeter that can measure at least twice the AC and DC current that
can be encountered for the machine. Be sure that the voltmeter has at least minimum
impedance of 5,000 OHMS-per-volt on AC and 20,000 OHMS-per-volt on DC scales. Popular
combination meters, VOM and VTVM can be selected to provide the necessary functions.
Before making haphazard substitutions and repairs when electrical components have
malfunctioned, we recommend that you check the associated circuitry and assemblies for
other defective devices and root causes of the problem. It is common to replace the
obviously damaged component without actually locating the real cause of the trouble. Such
hasty substitutions will only destroy the new component. Refer to wiring diagrams and
schematics.
Locating mechanical problems, should they occur, is relatively straightforward. When
necessary, refer to the parts catalog section.
