RGM 465, Mfg No. 175758, Page 25
Cleaning Combustion Chamber,
Flueway Passages, Flue Pipe, and Draft
Inducer
WARNING: Waste oils may contain engine-wear metal
compounds and foreign materials. When burned, these
compounds are deposited within or exhausted from this
boiler. Therefore, care should be taken when using,
cleaning and maintaining this equipment.
Whenever any cleaning, including the flue pipe and exhaust stack is done,
proper protective equipment, including gloves and a face mask or respira-
tor, must be worn.
WARNING: Turn off electric power before inspecting
or cleaning the unit. Shut off the return water and drain
into supply connection. Allow unit to cool.
Inspecting the Combustion Chamber
Maintenance
Continued
T
o determine need for cleaning, inspect the combustion chamber and
flueway passages through the access door on the end of the boiler (where
burner is mounted).
•
Remove the outer cover on the front of the boiler. Slightly pick
up the panel, tilt it toward you, and slide up to clear the burner.
•
Remove the bolts (Sizes 140 & 235, 2 bolts, 16mm socket; Sizes
350 and 500, 4 bolts, 18mm socket) and open the hinged access
door, being careful not to damage burner. (NOTE: Remove only
the door bolts; do not remove any other bolts.)
•
Shine a flashlight into the flueway passages. As little as 1/16” of
ash buildup on the internal surfaces can dramatically decrease the
thermal efficiency.
•
If the ash buildup is over 1/16”, proceed with the steps for “Re-
moving Soot and Ash”, page 26.
NOTE:
You cannot adequately do this inspection through the flame
observation port.
If cleaning of the combustion chamber and flue passages is not re-
quired, either proceed to “Cleaning the Burner End Cone, page 28”
while the door is open, or close and secure the door and replace the
front outer cover.
