Service manual

38 M411433
Section 5 Service Procedures
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
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WARNING
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39. GAS VALVE
(White Rodgers Glow-Bar Models)
Refer to Figure 15.
a. Remove control panel.
b. Close gas shut-off valve. Refer to Figure 14.
c. Disconnect all wires from gas valve terminals
and disconnect gas valve pipe unions.
d. Remove screws holding gas valve and bracket
to stove assembly.
e. Remove gas valve from mounting bracket.
f. Remove spudholder and nipple from left side of
valve. Use 1/2 inch Allen wrench to remove
plug from right side of valve.
IMPORTANT: Purge air from the gas service line
by operating tumbler in drying mode. Use pipe
compound resistant to action of L.P. gas on all pipe
threads.
NOTE: Refer to wiring diagram when rewiring gas
valve.
40. DIODE LOGIC BOARD
(White Rodgers Glow-Bar Models)
a. Remove control panel.
b. Disconnect wires from diode logic board
terminals. Refer to Figure 14.
NOTE: Refer to wiring diagram when rewiring
diode logic board.
c. Compress tabs on back ends of diode logic
board standoffs and push standoffs through
holes in cabinet wall to free the diode logic
board.
41. MAIN COIL
(White Rodgers Glow-Bar Models)
Refer to Figure 15.
NOTE: The redundant coil cannot be purchased
separately. Replace the complete gas valve.
a. Remove control panel.
b. Close gas shut-off valve. Refer to Figure 14.
c. Disconnect wires from main coil terminals.
d. Remove screws holding main coil to gas valve.
NOTE: Refer to wiring diagram when rewiring gas
valve main coils.
42. IGNITER BRACKET
(White Rodgers Glow-bar Models)
Refer to Figure 14.
a. Remove control panel.
b. Insert tips of 90 degree Tru-Arc pliers into
holes in each igniter mounting clip and spread
clips just far enough for igniter removal.
IMPORTANT: Use extreme care when handling the
igniter as it is very fragile. Handle igniter by
grasping the white wings only. Do not handle the
silicon carbide portion of the igniter with hands or
allow any oil, grease, or other foreign material to
contaminate it. Hairline cracks, oil, grease, or other
impurities will cause igniter to burn out.
c. Remove screw holding igniter bracket to stove
assembly.
d. Disconnect igniter wires from diode logic
board.
To reduce risk of fire or explosion, check
pipe connections for gas leaks with a non-
corrosive leak detection fluid. Do not use an
open flame to check for gas leaks!
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WARNING