Auto Latch Motor; Bake And Broil Ignitors - Amana ARGS7650 Service Manual

Testing Procedures
!
WARNING

Auto Latch Motor

Do not remove latch motor from latch assembly. If latch
motor is defective, replace latch assembly.
1. Disconnect power.
2. Remove screws securing maintop to frame, raise
maintop, and secure.
3. Disconnect lead wires from latch motor.
4. Connect jumper cord leads to latch motor.
5. Connect jumper cord to 110 AC power source.
6. Replace if latch motor fails to operate.
7. Reverse procedure to reconnect.
Double Switch
Auto Latch Switches
Both unlock and lock door latch switches may be
replaced.
1. Disconnect power.
2. Disconnect lead wires from door latch switch
(unlock).
3. Set ohmmeter to the RX1 scale.
4. Attach meter leads to door latch switch (unlock).
5. Depress actuator arm. The meter should read
continuity.
6. Reverse procedure to reconnect.
7. Use the same procedure to test the door latch switch
(lock).
COM NO COM NO
L1 L2
M
Lock Unlock
120 VAC
Switch
Switch
Motor
S.P.N.O.
S.P.N.O.
Double Switch
T T T T T o a o a o a o a o av v v v v oid the risk of electric shoc
death, disconnect power before servicing, unless testing death, disconnect power before servicing, unless testing
death, disconnect power before servicing, unless testing death, disconnect power before servicing, unless testing death, disconnect power before servicing, unless testing
requires it. requires it. requires it.
requires it. requires it.
Single Switch
NC
NO
COM
L1 L2
Oven Controls
Latch
LOCK/UNLOCK
SWITCH
S.P.D.T.
Single Switch
oid the risk of electric shock, k, k, k, k, per oid the risk of electric shoc oid the risk of electric shoc oid the risk of electric shoc

Bake and Broil Ignitors

Bake and broil ignitors are mounted to the bake and
broil burners. They ignite the gas flowing into the burner.
During bake and broil operations, current flows through
the ignitor, gas valve and thermostat to neutral. As the
ignitor heats up and starts glowing, its internal
resistance decreases. This allows more current to flow
through the bake or broil circuit.
When circuit current reaches approximately 3.3 - 3.6
amps, bimetal arm in the gas valve flexes, opening the
valve and allowing gas to flow to the burner where it is
ignited by the glowing ignitor. Ignitors glow anytime bake
or broil burners are operating and cycle on and off with
the thermostat cycling contacts.
Use the following procedure to check the ignitors for
continuity.
1. Disconnect power to oven.
2. Remove ignitor from burner. Disconnect ignitor
wiring.
3. Set ohmmeter to RX10 scale. Attach one meter lead
to each ignitor lead.
4. Resistance of several hundred ohms may be
indicated. The amount of resistance may vary with
each ignitor. This test determines if ignitor is opened
internally.
5. Ignitor may still have to be replaced even though
continuity is indicated and it glows when oven is set
for bake, broil or clean function.
Ignitor current may be measured more exactly by testing
with oven operating. Use the following procedure to test
ignitor current with oven operating.
1. Insert an ammeter in series with one lead of the
ignitor or any amp-probe attached to the lead to
check the amount of current flowing through ignitor
circuit.
2. Turn on oven and wait for ignitor to glow red. Meter
should indicate approximately 3.3 - 3.6 amps.
The same procedure may be used to bench test ignitor.
Connect an AC jumper or test cord to ignitor leads and
follow the preceding procedure.
39
per per personal injur per sonal injury or sonal injur sonal injur sonal injur y or y or y or y or
RS2310002 Rev. 1