750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual
4-7
4.4 — Flame Loss Sequence
Knowledge of the system and its controls will make troubleshooting much easier. Costly down time or delays can
be prevented by systematic checks of the 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 con-
dition, often one that is relatively simple to correct.
Remember, a safety device, for the most part, is doing its job when it shuts down or refuses to operate. NEVER
attempt to circumvent any of the safety features.
Preventive maintenance and scheduled inspection of all components should be followed. Periodic checking of the
relay is recommended to see that a safety lockout will occur under conditions of failure to ignite either pilot or main
flame, or from loss of flame.
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