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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.
W002
WARNING
42. GAS VALVE
a. Remove four screws holding access panel to
cabinet.
b. Lift access panel off top edge of front panel and
pull panel forward.
c. Close gas shut-off valve. Refer to Figure 9.
d. Disconnect all wires from gas valve terminals
and disconnect gas valve pipe unions.
e. Remove screws holding gas valve and bracket
to stove assembly.
f. Remove gas valve from mounting bracket.
IMPORTANT: When reinstalling gas valve, purge
air and sediment from the gas service line before
connecting it loosely to the tumbler. Purge
remaining air until odor of gas is detected, then
tighten connection. Use pipe compound resistant to
action of Liquid Petroleum Gas (L.P.) gas on all pipe
threads.
NOTE: Refer to wiring diagram when rewiring gas
valve.
43. IGNITER
Refer to Figure 9.
a. Remove four screws holding access panel to
cabinet.
b. Lift access panel off top edge of front panel and
pull panel forward.
c. Disconnect high voltage lead from igniter.
d. Remove two screws attaching igniter bracket to
burner tube.
44. IGNITION CONTROL
a. Remove four screws holding access panel to
b. Lift access panel off top edge of front panel and
pull panel forward. Refer to Figure 1.
c. Remove interior control box cover. Refer to
d. Locate ignition control on rear wall of interior
control box and disconnect wiring to ignition
control.
e. Remove two screws securing ignition control to
interior control box.
NOTE: Refer to wiring diagram when rewiring
ignition control.
45. BURNER TUBE
a. Remove four screws holding access panel to
cabinet.
b. Lift access panel off top edge of front panel and
pull panel forward.
c. Close gas shut-off valve. Refer to Figure 9.
d. Disconnect union nut attaching nipple to
spudholder and remove spudholder. Refer to
Figure 9.
e. Remove screws holding burner tubes to stove
front and remove burner tubes.
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!
W310
WARNING
When reinstalling spudholder, use non-
corrosive leak detection fluid to check all
pipe connections for gas leaks. DO NOT
USE AN OPEN FLAME TO CHECK FOR
GAS LEAKS! Make sure that spudholder
and orifices are positioned such that gas
will be injected directly down the center of
the burner.
W269R1
WARNING
Summary of Contents for D55
Page 1: ...D55 SERVICE MANUAL INDUSTRIAL DRYERS PUBLICATION DATE 10 03 70276001 ...
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Page 10: ...8 70276001 Section 2 Introduction Notes ...
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