Preventive Maintenance Work Plan Chart Page 29
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35Preventive Maintenance Work Plan
Frequency Key
W – Weekly
M - Monthly Q - Quarterly
SA- Semi-Annually A- Annually SST - Seasonal Start-Up SSH - Season Shut Down
Check low/high water limit controllers, adjust/tighten linkages if necessary. If probe type,
A
ensure that sensors are clean and free of debris.
Inspect boiler safety relief valve and assure proper operation.
A
Ensure proper operation of low/high temperature limit controllers.
A
Tune boiler for operation on the primary fuel. A combustion gas analyzer should be used to
A
check burner efficiency at 25%, 50%, 75% and 100% firing rate.
Other observations should be made during boiler tune-up such as fuel/air ratio, flame
A
color/spread, opacity, stack temperatures and O2/Nox/CO/CO2 concentrations.
Record all observations
A
Ensure that boiler components are operating in proper sequence.
W
Visually inspect all control linkages and components for proper operation, lubricate moving
W
parts, if necessary.
Inspect boiler piping, valves and fitting for leaks.
W
Ensure that boiler pressuretrol set points are not excessively high.
W
Experiment with lowering set points in order to conserve energy while meeting building demand.
W
If problems or inefficient operation are identified correct deficiencies immediately.
W
*Non-destructive testing should be performed on the boilers every three years.
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