Type 900HT Series
Electrode Stabilization Ovens
Operating Instructions
Operating Instructions
3
dryrod.com
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Phoenix International
Troubleshooting
Oven Fails To Operate: No Heat,
Overheats
1.
If the indicator light does not illuminate, check power supply.
2.
Check plug at outer end of power cord and run continuity check on complete
power cord. If defective, replace cord assembly.
3.
Check indicator light for continuity. If defective, replace indicator light.
4.
Check thermostat. If indicator light illuminates, power is being supplied
through thermostat to heating elements. Turn knob from low to high setting
and return. A definite "snap" should be heard at low temperature end and
indicator light should turn off and on with each "snap" cycle. If "snap" is not
heard and indicator light fails to operate, replace entire thermostat.
5.
If thermostat operates satisfactorily, check continuity of dual hairpin style
heating elements at bottom center of oven. Failure of one element will
prevent oven operation on 480 volts. If operating on 240 volts failure of one
element will cause very slow heating.
6.
If thermostat operates satisfactorily, recalibrate thermostat. (See Checking
Thermostat Calibration section below).
Door Will Not Close Properly
1.
Use screwdriver to adjust door latch.
2.
If latch is broken, replace with Door Latch and Strike (part #1252200). (See
Replacement Parts section in this manual.)
Checking Thermostat Calibration:
Each thermostat is adjusted at the factory and calibrated on precision instruments
to control temperatures accurately. Adjustment or re-calibration is not needed
unless the thermostat has been mishandled in transit or changed or abused while
in service.
To check calibration:
1.
Use a high grade mercury thermometer to check temperature. For griddle
control, use a disc type thermocouple. Put a couple drops of oil on griddle
surface plate, and place thermocouple disc flat into the oil.
2.
Turn the dial of the thermostat to 325° mark.
3.
Allow enough time for temperature to stabilize or until several temperature
readings are identical.
To calibrate:
1.
Remove knob from dial shaft by pulling knob straight out.
2.
With screwdriver, turn screw clockwise to decrease and counterclockwise to
increase temperature. Do not allow dial shaft to turn during this operation. A
¼ turn of the screw equals approximately 35°.
3.
Replace knob or control dial.
4.
After calibrating, let the appliance operate until the temperature has
stabilized, then recheck to determine if the calibration has been successful.
CAUTION
•
When replacing heating elements, always replace both elements. Pairing
of one new element with an old element may cause rapid failure of old
element.
Recommended Spare Parts
For users of large DryRod oven quantities or users not in North America:
For normal daily operation, the following spare parts and quantities are
recommended to have inventoried.
Item No. Spare Part Description
Part No.
Recommended
Quantity
per 10 Ovens
1
Heating Element Kit
1250900
1
2
Thermostat Kit
1251400
1
3
Door Latch and Strike
1252200
1
4
Insulation Block
1252400
1
5
Cord Kit
1257121
1
1
2
3
4
