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6.0 Maintenance
Maintenance Program
Check Pressure Settings
Check Filters
Check Pipes for Leaks
Check Flame Supervision Equipment Check the ability of the flame supervision system to function properly by simulat-
Check Bolts & Screws
Check for Overheating
Blower
Housing
Gasket
A sound preventative maintenance program, carried out by qualified individuals,
will greatly increase equipment reliability and productivity. Frequency of mainte-
nance checks should reflect the duty cycle of the heating equipment and condi-
tions such as dirt and temperature. Any maintenance program should include at
least the following steps:
Check burner high and low fire air and gas settings.
Examine and, if necessary, clean or replace air and gas filter elements.
Check all piping connections for leaks.
ing system failures:
Simulate burner flame-out by manually shutting off the gas.
Trip out pressure switches and other limit interlocks.
Try to light the burner before the purge and other timers have finished their cycles.
If simulated limit or flame failures do not shut down the fuel system within an ac-
ceptably short period of time, immediately take the equipment out of service and
correct the problem.
Leak test automatic and manual reset fuel valves per insurance company procedures.
Check all bolts and screws for tightness.
Check the area around the burner mounting flange for signs of overheating.
Gasket or insulation replacement may be necessary.
Figure 6–Filter Element Replacement
Blower
Housing
#10-24 x 3/8" Long Screws
& Lockwashers (6)
Hold-Down Screws (4)
1/4 Turn to Release Ring
Filter Element
14
Retaining
Ring
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