Amana AMV9 ユーザーズマニュアル

35

Annually inspect the drain tubes, drain trap, and field-supplied drain
line for proper condensate drainage.  Check drain system for hose
connection tightness, blockage, and leaks.  Clean or repair as
necessary.

Under some conditions, the fuel or air supply can create a nearly
invisible coating on the flame sensor.  This coating acts as an
insulator causing a drop in the flame sense signal.  If the flame
sense signal drops too low the furnace will not sense flame and
will lock out.  The flame sensor should be carefully cleaned by a
qualified servicer using emery cloth or steel wool.  Following clean-
ing, the flame sense signal should be as indicated in the Specifi-
cations Sheet.

The heat exchanger flue passageways should be inspected at the
beginning of each heating season.  If necessary, clean the pas-
sageways as outlined below.

1.

Turn OFF the electrical power and gas supply to the  furnace.

2.

Disconnect the gas line and remove the burner/ manifold
assembly by removing the screws securing the assembly
to the partition panel.

3.

Disconnect the flue pipe system from the induced draft
blower.

4.

Remove the induced draft blower and, drain and pressure
tap hoses from the recuperator coil front cover.

5.

Remove the recuperator coil front cover to expose the coil
tubes and turbulators.

6.

Remove the recuperator coil turbulators individually by slowly
pulling each turbulator forward firmly.

7.

Clean the recuperator coil tubes using a long handle wire
brush, such as a gun cleaning brush.

8.

Clean the primary heat exchanger tubes using a wire brush
attached to a length of high grade stainless steel cable,
such as drain cleanout cable. Attach a  variable speed
reversible drill to the other end of the cable.  Slowly rotate
the cable with the drill  and insert it into one of the heat
exchanger tubes.  While reversing the drill, work the cable
in and out several times to obtain sufficient cleaning.  Repeat
for each tube.

9.

Clean residue from furnace using a vacuum cleaner.

10. Replace the parts removed in the previous steps in reverse

order.

11. Turn on electrical power and gas to furnace.  Check for

leaks and proper unit operation.

12. Severe heat exchanger fouling is an indication of an

operational problem.  Perform the checks listed in  Section
XIV, Startup Procedure and Adjustments to reduce the
chances of repeated fouling.

Internal filters are an accessory item and are not included with your
furnace.  For further details, see your distributor.

1.

Turn OFF electrical power to furnace.

2.

Remove blower compartment door.

3.

Push back and up on the wire filter retainer to release it
from under the front lip of the furnace basepan.

4.

Slide filter forward and out.

5.

Replace filter by reversing the procedure.

1.

Turn OFF electrical power to furnace.

2.

Remove blower compartment door.

3.

Grasp lower portion of filter and lift up.

Front of Furnace

Blower

Grab Here
And Lift

F

ilt

e

r

Front of Furnace

Blower

4.

Angle filter toward the blower until filter clears bottom rail.

5.

Lower filter down and pull outward.

Front of Furnace

Blower

Front of Furnace

Blower

6.

Replace filter by reversing procedure.

•

Cycle the furnace with the thermostat at least three times.
Verify cooling and fan only operation.

•

Review the Owner’s Manual with the homeowner and
discuss proper furnace operation and maintenance.

•

Leave literature packet near furnace.

•

When ordering any of the listed functional parts, be sure to
provide the furnace model, manufacturing, and serial
numbers with the order.

•

Although only functional parts are shown in the parts list, all
sheet metal parts, doors, etc. may be ordered by description.

•

Parts are available from your distributor.

Functional Parts List-

Gas Valve

Blower Motor

Gas Manifold

Blower Wheel

Natural Gas Orifice

Blower Mounting Bracket

Propane Gas Orifice

Blower Cutoff

Igniter

Blower Housing

Flame Sensor

Capacitor