750-177 6-1
CHAPTER 6
Troubleshooting
!
DANGER
WARNING
Troubleshooting should be performed only
by personnel who are familiar with the
equipment and who have read and
understand the contents of this manual.
Failure to follow these instructions could
result in serious personal injury or death.
!
DANGER
WARNING
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
personal injury or death.
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 elsewhere in this manual.
If the burner will not start or operate properly, the trouble
shooting 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.
Familiarity with the programmer and other controls in the
system may be obtained by studying the contents of this
manual. Knowledge of the system and its controls will make
trouble shooting much easier. Costly down-time or delays can
be prevented by systematic checks of actual operation against
the normal sequence to determine the stage at which
performance deviates from normal. Following a routine may
possibly eliminate overlooking an obvious condition, often
one that is relatively simple to correct.
If an obvious condition 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.
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