Benjamin Heating products WK400, Owner'S Manual

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-7-
TO CLEAN HEAT EXCHANGER
1. Remove clean out casing. (top front panel above firebox.)
2. Remove the two round clean out covers by removing the
nuts from the heat exchanger.
3. Remove the rectangular cover from the combustion tunnel
by removing the two nuts. This cover is located below and
between the round covers, on the top front of the firebox.
4. Clean with a wire brush. It may also be necessary to
remove the smoke pipe to clean the rear of the heat
exchanger.
5. Make sure the gaskets are in good condition (replace if
necessary).
6. Replace the covers in reverse order.
BLOWER and MOTOR
Twice yearly, oil the blower & motor bearings with 4 drops of
#20 SAE oil. Twice yearly, oil the blower motor bearings with
2 drops of #20 SAE oil. DO NOT over oil.
AIR FILTER
The filter should be inspected at least monthly and replaced (16" x 20" x 1") as necessary. To replace
filter, turn off power to unit, remove blower access door, remove old filter and replace with new, replace
blower access door and restore power.
IMPORTANT NOTES:
-Know the location of the emergency disconnect switch for the furnace.
-If remodeling in the area of the furnace call a service technician.
-Do not tamper with the furnace or controls - CALL YOUR SERVICE TECHNICIAN.