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18 332511A
Repair
Replace Platen Heaters and
Sensor
55 Gallon Platen Heater and Sensor
1. Turn off main disconnect at the machine.
2. Allow equipment to cool.
3. Remove both platen cover fasteners (F).
4. Remove both platen covers (C) and ground wire
from platen.
5. Remove platen heater blocks (B).
a. Use a hex wrench to remove three nuts (N) and
washers (L, W) from each heater block.
b. Remove screws from junction box cover.
Loosen strain relief nut, and remove junction
box cover.
c. Disconnect four platen heater wires (labeled A
and B) and RTD sensor (R) connector in the ter-
minal box.
d. Remove screws and washers. Remove platen
heater blocks (B) and RTD sensor (R).
6. Install new platen heaters and RTD sensor (R).
Secure RTD sensor (R) with screw and washer.
Secure platen heater blocks with nuts and washers.
7. Label platen heater wires A and B. Reroute platen
heater wires and platen RTD sensor (R) through the
conduit to the junction box. Reconnect the four wires
to the appropriate terminal block A and B. Recon-
nect the platen RTD sensor (R).
8. Reinstall junction box cover. Secure with screws and
tighten strain relief nut.
9. Reconnect ground wire, and install platen covers.
Secure platen covers with fasteners. Torque platen
cover fasteners to 60 in-lbs +/- 10 in-lbs (6.8 +/-
1.1 N•m).
FIG. 4: Replace Platen Heaters and RTD sensor (R)
C
B
W
N
F
L
R