Amana GUI Installation Instructions Manual page 30

Air Filter - Counterflow Furnaces
A furnace mounted filter rack, shipped with the furnace,
can be used in counterflow installation.
The furnace-mounted filter rack includes a rack mounted
on the top of the furnace. Two filters fit into the rack and
rest against the sides of the return air plenum, forming a
"V" above the furnace.
The filters should be inspected frequently and cleaned or
replaced when necessary. In some installations, the
filters can be inspected after disconnecting the electrical
power and removing the optional access door in the
return air plenum. If this access panel is not present,
proceed as follows:
1. Disconnect the electrical power.
2. Remove the non-louvered door from the furnace.
3. Remove the left filter by reaching to the left side of the
blower, pushing the filter up slightly to remove it from
the filter rack, and pulling it down to the left of the
blower and out the blower door. Repeat with the right
filter.
4a. Dirty throwaway filters must be replaced with the
same filter type and size.
4b. Dirty, permanent metal filters must be cleaned as
follows:
Wash, rinse, and dry the permanent filters. Both
sides should then be sprayed with a filter adhesive as
is recommended on the adhesive container. Many
hardware stores stock spray adhesives for use with
permanent filters.
If badly torn or uncleanable, these filters must be
replaced by equal size permanent, high velocity
filters. Throwaway filters must not be used as re-
placement for permanent filters. Under normal use,
permanent filters should last for several years.
5. To reinstall the filters, first MAKE CERTAIN THE
AIRFLOW DIRECTION ARROW POINTS TO-
WARDS THE FURNACE. Then insert the filters from
the left side of the blower. Starting with the right filter,
push the filter into the plenum so that the bottom of
the filter rests in the filter rack and the upper edge
rests against the side of the plenum. Repeat with the
left filter. (Figure 44)
6. Replace the blower door, then reconnect the electri-
cal power.
Furnace mounted Filter Rack
(Counterflow)
Blower Motor
The air circulating blower motor bearings are perma-
nently lubricated. No further lubrication is required.
Induced Draft Blower Motor
The induced draft blower motor is permanently lubri-
cated. No further lubrication is required.
Flame Sensor (Integrated Ignition Control)
(Qualified Servicer Only)
The fuel or combustion air supply can create a nearly
invisible coating on the flame sensor. This coating acts as
an insulator, causing a drop in the flame sensing signal.
To remove this coating, a qualified servicer should care-
fully clean the flame sensor with emery cloth or steel
wool. After cleaning, the microamp signal should be in the
range listed in Specification Sheet.
Ignitor (Qualified Servicer Only)
If the ignitor and the surrounding air are at about 70°F and
the ignitor wires are not connected to any other electrical
components, the resistance of the ignitor should not
exceed 200 ohms. If it does, the ignitor should be
replaced.
Flue Passages (Qualified Servicer Only)
At the start of each heating season, inspect and if
necessary, clean the furnace flue passages.
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Figure 44