Primus D55, Service Manual, Page: 35 / 82

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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
39. LOADING DOOR HINGE LUG
Refer to Figure 5.
a. Open loading door until door is perpendicular
to machine front.
b. Remove bottom hex head screw from hinge
cam at bottom of door.
c. Remove lower cam assembly by sliding
downward while disengaging setscrew from
door hinge.
d. Lift door assembly off top of door hinge lug.
e. Remove four screws from top and bottom
surfaces of exterior control box cover and
remove cover, disconnecting control box cover
harness or load ready light wire. Refer to
Figure 3.
f. Remove screw from left and right sides of
control bracket securing control plate. Refer to
Figure 3.
g. Pivot plate forward to horizontal.
h. Disconnect two plugs from wall of interior
control box and disconnect control box cover
harness (European models only).
i. Remove four screws securing control mounting
bracket to front panel, careful to support control
plate assembly.
j. Pull entire control assembly away from unit.
k. Remove four screws securing front panel to
cabinet frame. Pull front panel forward,
disconnecting door switch harness plug at
upper right corner of front panel to frame. Refer
to Figure 6.
l. Remove two screws holding switch cover to
front panel.
m. Disconnect wires from door switch.
n. Remove two large screws and nuts top and
bottom securing hinge lug to front panel.
o. Remove four small screws securing hinge lug
and door switch wire channel to rear of front
panel.
40. THERMISTOR
Refer to Figure 7.
a. Remove lint panel.
b. Locate thermistor assembly on top of lint hood.
c. Remove thermistor bracket mounting screws.
d. Disconnect wiring from thermistor terminals.
e. Unscrew thermistor from thermistor nut.
NOTE: Refer to wiring diagram when rewiring
thermistor.
Figure 7
TMB1763S
Lint
Screen
Thermistor
Thermistor
Bracket
Mounting
Screw