Service manual

505872 35
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
To Test Accumulator and Timer Motor:
(Metered Models – Refer to Figure 11)
1. Remove wires from one side of each switch.
NOTE: Refer to appropriate wiring diagram when
rewiring switches.
2. Manually advance timing cam to disengage it
from ratchet wheel.
3. Set meter to read OHMS and apply leads on
terminals of each switch in turn. You should read
the following:
Switch A – “zero” Ohms (closed)
Switch B – “zero” Ohms (closed)
Switch C (if present) – “infinite” (open)
4. Manually advance timing cam until it engages
with ratchet wheel and the first “click” is heard.
Switch B should now read “infinite” (open).
5. Continue to rotate timing cam until second
“click” is heard. Switch B should remain open.
Switch A should read “infinite” (open) and
Switch C (if present) should read “zero” Ohms
(closed).
6. Timing Motor:
a. Apply live power to timing motor leads.
Timing motor should advance timing cam.
Figure 11
DR064-SV-1
THREE SWITCH ACCUMULATOR
SWITCH
LEVER
TWO SWITCH ACCUMULATOR
DR028-SV-1
RATCHET
WHEEL
TIMING
CAM
SWITCHES
RATCHET
WHEEL
SWITCH
LEVER
SWITCH
LEVER
SWITCHES
TIMING
CAM