8
PERFORMING ROUTINE MAINTENANCE
With proper maintenance and care, your furnace will operate economically and dependably. Instructions for basic maintenance are
found on this and the following pages. However, before beginning maintenance, follow these safety precautions:
FILTERING OUT TROUBLE
A dirty air filter will cause a loss of airflow in your duct system. When excessive loss of airflow occurs, the furnace may cycle on
the safety controls. If this condition is left unattended, the furnace operation will eventually be locked out. It is recommended that
the furnace filter be checked every 3 or 4 weeks and cleaned if necessary.
The air filter is normally located in the blower compartment. (See Fig. 1.) If the air filter has been installed in another location, contact
your dealer for instructions. To inspect, clean, and/or replace the air filter(s), follow these steps:
1. Turn off electrical supply to the furnace. (See Fig. 23.)
2. Remove main furnace door. (See Fig. 24.)
3. Remove blower access panel. (See Fig. 25.)
NOTE:
It will be necessary to remove 2 screws.
23 24 25
4. Remove air filter from furnace.
• AIR FILTER(S) LOCATED IN BOTTOM:
a. Slide air filter retainer sideways until it is free of latch. (See Fig. 26.)
b. Slide air filter out of furnace. (See Fig. 27.)
26 27
• AIR FILTER LOCATED IN THE SIDE:
a. Remove air filter retainer from latch. (See Fig. 28.)
b. Gently remove air filter and carefully turn the dirty side up (if dirty) to avoid spilling dirt from the filter. (See Fig. 29.)
WARNING: Turn off electrical power supply to your furnace before removing the main furnace door to ser-
vice or perform maintenance. Failure to follow this warning could result in personal injury or death.
CAUTION: Although special care has been taken to minimize sharp edges, be extremely careful when han-
dling parts or reaching into the furnace.
CAUTION: Never operate your furnace without a filter in place. Doing so may damage the furnace blower
motor. An accumulation of dust and lint on internal parts of your furnace can cause a loss of efficiency.
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