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53264
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
29. IGNITION SYSTEM FEATURES
Refer to Figure 12
a. Momentary Power Interruption
(1) Upon resumption of power, sensor
contacts will still be open, permitting
secondary valve to open.
(2) However, with the secondary coil in the
circuit, the booster coil cannot draw
enough current to open the split-coil valve.
(3) When sensor contacts do reclose, the
secondary valve will close, and the burner
system will be in the normal pre-ignition
circuit.
b. Flame Failure
(1) In case of flame failure, the sensor contacts
will reclose in about 45 seconds.
(2) This will close the secondary valve and the
burner system will be in the normal pre-
ignition circuit.
c. Ignition Failure
(1) If flame is not established as sensor
contacts open, secondary valve will remain
open until sensor contacts reclose.
(2) Sensor will continue to recycle the igniter
and secondary valve (about once per
minute) until ignition is made or dryer is
turned off.
Figure 12
DRY839S
120 VOLT, 60 HERTZ
ELECTRICAL SUPPLY LINE
120 VOLT, 60 HERTZ
ELECTRICAL SUPPLY LINE
SECONDARY
COIL
SECONDARY
COIL
BOOSTER
COIL
BOOSTER
COIL
HOLDING
COIL
HOLDING
COIL
IGNITER
IGNITER
SENSOR
SENSOR
GAS
FLOW
GAS
FLOW
SPLIT-COIL
VALVE
SECONDARY
VALVE
PRE-IGNITION CIRCUIT
BURN CIRCUIT
