UB–12R OWNER'S MANUAL
NU–VU® FOOD SERVICE SYSTEMS
MENOMINEE, MICHIGAN 49858
page
24
SALES FAX (906) 863-5889 • SERVICE FAX (906) 863-6322
(800) 338-9886
III.
The Oven Motor cuts out or will not restart when the Oven is hot:
The Oven Motor should be running at all times whenever the Oven is being used. Using the
Oven without the Oven Motor running will cause damage to the components found in your
Oven!
A. If your Oven is fitted with a Motor Reversing Switch make sure the Switch is set to
either the
HI
or
LO
position.
B. Check the wiring connections from the Power Switch or Motor Reversing Switch to the
Oven Motor. All connections must be clean and tight.
C. The Motor on the UB–12R is thermally protected and will shut itself down if it becomes
overheated. Check the top of the Oven for loose or missing insulation, or
malfunctioning Cooling Fans. Replace any missing insulation or Cooling Fan as
necessary. Any Motor that continues to overheat should be replaced.
IV.
The Oven Blower Wheel makes noise:
A. Remove the Oven Element Cover by removing the three thumbscrews on each side. Pull
it toward you as it drops down. Check to see that the Oven Blower Wheel is not rubbing
on the ceiling of the Oven or on the inside of the Element Cover. The Blower Wheel
position on the Motor Shaft can be adjusted by loosening the allen set screws and
moving the Blower Wheel up or down on the Oven Motor shaft as necessary.
B. If there is no evidence of rubbing either on the Element Cover or the Oven ceiling the
Blower Wheel may be loose on the Oven Motor shaft. Re-torque the Blower Wheel set
screws to 175 inch/pounds.
V.
You have an uneven bake:
A. Check the Oven Heating Elements in each side for proper operation (refer to II-B on
page 19).
B. Be sure the Oven Door Gasket is tight on all sides with no gaps. Use a small scrap of
paper closed in the Door to test the Gasket fit.
C. If you still get a bad or uneven bake after checking all of the above, please call NU–
VU®'s Service Department at (800) 338-9886 for assistance.
VI.
One or more Indicator Lights do not go on:
The Indicator lights tell when a system or control is activated. Failure of the Indicator Light
itself will not affect the over-all operation of your unit.
A. Make sure all electrical connections are clean and tight.
B. Check the associated control to see if it functions correctly. If the control functions but
the Indicator Light does not light up the Indicator Light itself is bad and should be
replaced.
VII. The Oven Timer does not run:
Your UB–12R is equipped with either one 60–Minute Timer and interconnected Buzzer
Alarm, a 60 Minute EXTERNAL STEAM Timer or with a 24–Hour Timer if the unit is
equipped with the COOK–N–HOLD option. These Timers are electro-mechanical devices
which count down to "
0
" from the initial time setting.
If any Timer does not function correctly:
A. Check the electrical connections between the Oven Power Switch and the Timer. All
connections must be clean and tight.
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