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VIII. Service and Cleaning
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. GENERAL. Inspection service and cleaning should
be conducted annually. Turn off electric power and
close oil supply valve while conducting service or
maintenance.
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. FIRETUBES AND COMBUSTION CHAMBER. (See
Figure 29)
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Figure : Cleaning of AP-U Boiler
1. CLEAN THE FIRETUBES
a. Disconnect electric to burner and remove stack.
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b. For access to the firetubes, pull top jacket panel
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c. Remove turbulators.
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d. Using a firetube brush clean firetubes. DO NOT
e. Assemble the boiler in reverse order.
Units should be cleaned at least once a year, preferably
at the end of each heating season.
It is not necessary to remove burner to clean boiler.
Brush, scrape, or vacuum from top.
off. Remove brass nuts, that hold canopy down.
Without taking off carriage bolts, pull canopy
off.
extend brush past the end of the bottom
tubesheet.
33
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