Holman qt14 - Manual (Page 15)

IF FURTHER ASSISTANCE IS REQUIRED:
CONTACT STAR/HOLMAN FACTORY SERVICE TEAM AT 1-800-807-9054
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MAINTENANCE PROCEDURES
REPLACING HEATER TUBES
FOR BEST TOASTING PERFORMANCE, THIS PROCEDURE SHOULD BE DONE EVERY SIX MONTHS
Turn power off and allow cooling fans to run until the control box is cooled off. The fans are controlled by a thermostat in
the control box.
DISCONNECT UNIT FROM POWER SUPPLY OR TURN POWER OFF AT WALL BREAKER.
NOTE: PERFORM THIS MAINTENANCE ONLY WHEN THE
CONVEYOR SANDWICH WARMER IS COMPLETELY COOL.
1. Position unit for access to front and rear panels. Also remove the viewing window per instruction in daily cleaning.
2. Remove screws holding front and rear panels. Lift panels up and out to remove.
3. Each heater tube has its own connection to a terminal block at the front and back of the sandwich warmer.
NOTE: MARK WIRE LOCATIONS IN TERMINAL BLOCKS BEFORE DISCONNECTING ANY WIRES. REPLACE
ONLY ONE HEATER TUBE AT A TIME TO AVOID INCORRECT REWIRING.
4. The heater tubes are held in place by key slot heater tube retainers that are accessible on the control side of the
machine.
5. Using a screwdriver, loosen the screws holding the retainer in place.
6. Slide the retainer to line up the round part of the keyhole with the tube. Re-tighten one or two of the screws to hold the
retainer up.
7. Select the first heater tube to be replaced and remove the wires from terminal block connections (both sides).