Whirlpool R0158881 Owner's Manual

R0158881

Cavity Replacement Instructions

For 3 – Tube Models

CAUTION

!

To avoid personal injury or property damage, handle
stainless steel parts with care, due to sharp edges.

Cavity Removal

Remove oven grease shield.
Remove outer case.
Remove back panel.

Remove LV board.
Disconnect and discard wire harness connecting

extended memory board to back panel (some models

only).
Remove extended memory board (some models only).
Remove top touch panel.
Remove side touch panel.

Remove oven door. See Figure 3.
Remove hinge support bracket and oven schematic.
Remove oven lamp (some models only).
Remove lamp socket.
Disconnect top stirrer motor wires.

Disconnect bottom stirrer motor wires.
Remove outer case trim. See Figure 3.

Remove interlock switch module mounting plate screws

(do not remove wires). See Figure 2.
Disconnect green ground wire from cavity (near switch

mounting screws) see Figure 2.
Locate wire harness snap bushing by the top front

magnetron and slide snap bushing upwards on the

wire harness (see Figure 1).
Remove foam tape from snap bushing slot.
Remove harness wires from bushing slot, one wire at a

time.

WARNING

!

To avoid the risk of electrical shock, personal injury, or
death, disconnect power to oven and discharge
capacitors before following any disassembly procedure.

Remove (6) thermal cut out mounting plate hex head

screws and (3) mounting plates. (Do not disconnect
wires or thermal cut outs).

Remove two harness retaining clips (squeeze tip of clip

and pull away from oven).

Reposition wire harness and thermal cut out assemblies

to the back of the oven.

Remove diode mounting screws.
Disconnect high voltage wires from the magnetrons.

Using a knife, cut the foam tape and route the high
voltage wires to the back of the oven.

Remove the following ducts: See Figure 1.

- Top magnetron ducts.

- Bottom magnetron duct.

- Rear flow divider duct.

- Top flow divider duct.

- Bottom flow divider duct.

Remove top magnetrons.
Remove side exhaust duct. See Figure 2

Remove cavity thermal cut out mounting screw (do not

disconnect wires).

Release oven lamp and harness from retaining clip.
Remove seven (3 top, 4 bottom) component panel

mounting screws. See Figure 2. (Do not disconnect

component wiring).
Remove six base pan to cavity mounting screws.
Slide rear component panel away from the cavity.
Remove cavity.
Remove bottom magnetron.
Reassemble in reverse order.

April 2000 1 R0158881

IMPORTANT SAFETY INFORMATION

Installation

1. Install new cavity by reversing removal instructions.

2. Perform the following tests:
A. Interlock switch module contacts.
B. Microwave R.F. leakage test.
C. Microwave power test.

CAUTION

!

Read the following information to avoid possible
exposure to microwave radiation.

1. Always operate unit from an adequately grounded

outlet. Do not operate on a two-wire extension cord.

2. Before servicing unit (if unit is operable) perform

microwave leakage test.

3. The oven should never to operated if the door does not

fit properly against the seal, hinges or hinge bearings
are damaged or broken; the choke is damaged,
(pieces missing, etc.); or any other visible damage
can be noted. Check choke area to ensure that this
area is clean and free of all foreign matter.

4. If the oven operates with door open and produces

microwave energy, take the following steps:
A. Tell the user not to operate the oven.
B. Contact Amana Refrigeration, Inc. immediately.

5. Always have oven disconnected when the outer case

is removed except when making "live" tests called for
in the Service Manual. Do not reach into equipment
area while unit is energized. Make all connections for
the test and check them for tightness before plugging
cord into outlet.

8. Do not for any reason defeat interlock switches there
is no valid reason for this action at any time; nor will it
be condoned by Amana.

9. IMPORTANT: Before returning a microwave to a
customer, check for proper switch interlock action.
The primary and secondary switches MUST open
when the door handle is actuated. The monitor
switch MUST close at 1/4 inches when the door is
opened. (See Service Section for detailed
instructions.

10. Before returning a microwave to a customer, verify the
door spacing is reasonably uniform along the top,
bottom, and sides, and that it measures 1/8-inch or
less.

11. The Amana microwave oven should never be operated
with:

• Any components removed and/or bypassed

• Any of the safety interlocks are found to be

defective,

• Any of the seal surfaces are defective, missing,

or damaged.

12. All Amana microwave ovens meet all requirements of
the radiation control for Health and Safety Act of

1968. Due to measurement uncertainties, the
maximum leakage for the field will be 4mw/cm2.

13. To ensure that the unit does not emit excessive
microwave leakage and to meet Department of Health
and Human Services guidelines check oven for
microwave leakage using Narda Model 8100, 8200,
Holaday HI1500, HI1501, or Simpson 380M leakage
monitor as outlined in instructions. The maximum
leakage level allowed is 4mw/cm2 .

6. Always ground capacitors on magnetron filter box and
H.V. capacitor with an insulated-handle screwdriver
before working in high voltage area of equipment
compartment. Some types of failures will leave a
charge in these capacitors and the discharge could
cause a reflex action which could make you injure
yourself.

7. In the area of the transformer, capacitor, diode, and
magnetron there is HIGH VOLTAGE. When the unit
is operating - keep this area clean and free of
anything which could possibly cause an arc or
ground, etc.

14. If servicer encounters an emission reading over 4mw/
cm2 the servicer is to cease repair and contact
Amana Service Department immediately for further
direction. Amana Refrigeration, Inc. will contact the
proper Government Agency upon verification of the
test results.

R0158881 2 April 2000