User Manual

Sealer Sales Page 43
ST-1808-28 Tunnel Service Manual
MAINTENANCE—REPLACE TEMPERATURE CONTROLLER
P. Temperature controller replacement.
(1) Shut off power to machine.
(2) Open main panel door.
(3) Disconnect four wires (Two Nos. 7, 14 and 24) and
thermocouple wires from temperature controller.
(4) Loosen screws on side of controller itself and pull
controller out of the front of the panel. Replace with new
controller. Refer to electrical schematic for replacement
of four wires (Two Nos. 7, 14 and 24) and thermocouple
wires.
WARNING: IF NO CONTROL OVER HEAT, INTERCHANGE
THERMOCOUPLE WIRES.
CAUTION! DO NOT EXCEED 500 DEGREES.
Wires 7, 14 & 24