750-368
CBEX Elite 100-1200 HP
7-1
CHAPTER 7 Troubleshooting
Chapter 7 assumes that the unit has been properly installed and adjusted, and that it has been running for some
time. It is further assumed that the operator has become thoroughly familiar with both burner and manual by this
time. The points under each heading are set down briefly as possible causes, suggestions or clues to simplify
locating the source of trouble. Methods of correcting the trouble, once it has been identified, may be found else-
where in this manual.
If the burner will not start or operate properly, the troubleshooting chapter should be referred to for assistance in
pinpointing problems that may not be readily apparent.
The program relay has the capability to self-diagnose and to display a code or message that indicates the failure
condition. Refer to the control bulletin for specifics and suggested remedies.
Knowledge of the system and its controls will make troubleshooting much easier and can be obtained by study-
ing the contents of this manual and others provided with the boiler. Costly downtime or delays can be prevented
by systematic checks of actual operation against the normal sequence to determine the stage at which perfor-
mance deviates from normal. Following a routine may possibly eliminate overlooking an obvious condition, often
one that is relatively simple to correct.
If an obvious cause for a problem is not apparent, check the continuity of the circuits with a voltmeter or test
lamp. Each circuit can be checked and the fault isolated and corrected. Most circuitry checking can be done
between appropriate terminals on the terminal boards in the control cabinet or the entrance box. Refer to the
schematic wiring diagram for terminal identification.
Troubleshooting should be performed only by personnel familiar with the equipment and who have read and under-
stood this manual. Failure to follow these instructions could result in serious injury or death.
Disconnect and lock out the main power supply in order to avoid the hazard of electrical shock. Failure to follow
these instructions could result in serious injury or death.
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