ALLIANCE AE7133 Service Manual Page 33

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32 60549
Section 5 Service Procedures
To reduce the risk of electric shock, fire, explosion, serious injury or death:
Disconnect electric power to the dryer(s) before servicing.
Close gas shut-off valve to gas dryer(s) before servicing.
Never start the dryer(s) with any guards/panels removed.
Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the dryer is properly grounded.
W001R1
WARNING
© Copyright, Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT
40. BURNER SYSTEM COMPONENTS GAS
MODELS
a. Complete Gas Valve Assembly
(1) Remove two screws from the bottom edge
of the front panel. Refer to Figure 12.
(2) Swing the bottom of the panel away from
the dryer to disengage hold-down clips and
guide lugs from cabinet top. Refer to
Figure 12.
(3) Disconnect wires from door switch. Refer
to Figure 13.
NOTE: Refer to the appropriate wiring diagram
when rewiring the switch.
(4) Close gas shut-off valve, disconnect igniter
wires at disconnect blocks, sensor wires
from sensor terminals, and wires from gas
valve coils at the quick disconnect blocks.
Refer to Figure 14.
(5) Disconnect gas shut-off valve from gas
valve at the union nut. Refer to Figure 14.
(6) Remove three screws holding valve and
mounting bracket to base. Refer to
Figure 14.
(7) Lift gas valve and mounting bracket from
base. Refer to Figure 14.
To Test Electrical Circuit To Ignition System
(Gas Models)
1. Remove valve wire harness disconnect block
from the holding and booster coil. Refer to
Figure 15.
2. Plug dryer power cord into wall receptacle, start
the dryer in a heat setting (refer to the Operating
Instructions supplied with dryer).
3. Set test meter to read AC voltage and apply
meter probes into terminals on the dryer harness
that would correspond to terminals 1 and 2
on the coil. Refer to Figure 15. Meter should
register line voltage in all Fabric settings, except
FLUFF which should read zero VAC.
4. If meter does not read line voltage in step 3,
check motor switch, thermostat, thermistor,
temperature switch or timer.
To Test Gas Valve Coils
(Gas Models)
1. Remove disconnect blocks from gas valve coils.
Refer to Figure 15.
2. Set test meter to read OHMS and put meter
probes to terminals as follows:
a. Holding Coil (Refer to Figure 16)
Terminals 1 and 2 - Meter should read 1365
± 25 Ohms.
b. Booster Coil (Refer to Figure 16)
Terminals 1 and 3 - Meter should read 560 ±
25 Ohms.
c. Secondary Coil (Refer to Figure 16)
Terminals 4 and 5 - Meter should read 1220
± 50 Ohms.
NOTE: If meter registers any readings other than
that listed above, the respective coil should be
replaced.
NOTE: Test procedure can be performed on
workbench if gas valve, igniter, burner tube and
burner housing have been removed from dryer.
Figure 16
1 - 3
4 5
TOP VIEW OF GAS VALVE
D149SE1A
SECONDARY
COIL
HOLDING
AND BOOSTER
COIL
4
5
1
2
3
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