Holman 314HX Series, Инструкции по сборке, установке и эксплуатации

Страница: 12 / 28

TROUBLESHOOTING GUIDE
A. UNIT WILL NOT HEAT, CONVEYOR BELT WILL NOT MOVE.
1) Be sure the main circuit breaker is switched to the ON position and there is power to the outlet.
2) Check to see if the oven is plugged in and all controls are turned to the ON position.
3) Be sure the Hi-Limit Reset Button is pushed in.
4) Call the Star Service Help Desk at (314) 634-6303.
B. UNIT WILL NOT HEAT, CONVEYOR TURNS PROPERLY.
1) Check to see if the top and bottom heat controls have been turned to the maximum setting.
2) Press the Hi-Limit Reset Button located underneath the conveyor belt on the right side. If this reactivates
the heater tubes, see Hi-Limit Reset Section below.
3) Call the Star Service Help Desk at (314) 634-6303.
C. HI-LIMIT (HEAT) RESET.
Your Holman conveyor oven is equipped with an automatic activated temperature limit switch which interrupts the
heater tube connections if the air temperature in the control box exceeds 190°F (88°C) This limit switch can be
reset manually by pushing the button in the center of the switch which is located on the right side under the
conveyor belt. See Oven Components on Page 7 for location. Unit will not reset until internal temperature has
fallen below 190°F (88°C).
NOTE: THE HI-LIMIT SWITCH CAN BE ACTIVATED IF THERE IS NOT A PROPER AMOUNT OF
AIR FLOW BEING GENERATED BY THE COOLING FAN. IF THIS OCCURS:
1) DISCONNECT UNIT FROM POWER SOURCE.
2) Check to see if the air intake area (center of the control box, bottom of unit) is free of dust,
grease or other obstructions.
3) Check to see if crumb trays (heat reflectors) are in place. If the Hi-Limit Switch can not be reset, call the
Star Service Help Desk at (314) 634-6303.
NEVER OPERATE UNIT WITHOUT CRUMB TRAYS IN POSITION AS THIS CAUSES
OVERHEATING IN THE CONTROL BOX.
D. CONVEYOR WILL NOT TURN, UNIT HEATS PROPERLY.
To check for mechanical binding:
1) DISCONNECT UNIT FROM POWER SOURCE.
DRIVEN SPROCKET
DRIVE SPROCKET
CHAIN
IL1007
2) Check to see if there are obstructions in the conveyor
system that may cause a jam. If so, remove obstruction.
3) Check power supply & terminal blocks for loose or
disconnected wires.
4) Remove right side panel and drive motor sprockets,
see illustration. Manually move conveyor belt to check
for mechanical binding. If conveyor belt moves freely,
call the Star Service Help Desk at (314) 634-6303.
The drive motor or speed control may have to be replaced.
E. CONVEYOR TURNS AT ONE SPEED
REGARDLESS OF SPEED CONTROL SETTING.
1) Call the Star Service Help Desk at (314) 634-6303, as speed control MAY need replacing.
Refer to REPLACING SPEED CONTROL in the previous section.
F. COOLING FAN DOES NOT START
1) Remove control box cover and check fan blade for obstruction.
2) Check electrical connections are secure and complete.
3) Call the Star Service Help Desk at (314) 634-6303, as the fan switch and or fan motor MAY need
replacing.
Refer to REPLACING FAN MOTOR in the previous section.
CAUTION