SUB–123 OWNER'S MANUAL TROUBLE-SHOOTING GUIDE
IV. The Proofer Power Switch is in the ON position but the Proofer Motor makes noise or
does not run:
(refer to Fig. #10 on page 29)
A. Loosen and lift the Element Cover [62 or 88] away from the Proofer Fan Blade [61] or Blower
Wheel [86]. If the Proofer Motor starts running, or the noise stops, the Fan Blade/Blower Wheel
was dragging on the bottom of the Element Cover. Straighten the Element Cover (if it is bent
down) or reposition the Fan Blade/Blower Wheel on the Proofer Motor shaft.
B. Remove the Proofer Element Cover and check the Fan Blade/Blower Wheel for dragging on the
floor of the Proofer. Reposition the Fan Blade/Blower Wheel on the Proofer Motor shaft if
necessary.
C. Check the set screw on the Fan Blade/Blower Wheel for tightness. A loose set screw will allow
the Fan Blade/Blower Wheel to wobble and vibrate, causing noise and possible damage to the
Proofer Motor.
D. Remove the Proofer Element Cover and spin the Proofer Motor by hand. If the Motor turns hard
or makes a grinding noise when turned the Motor bearings are bad and the Motor must be
replaced (refer to
PROOFER MOTOR/FAN ASSEMBLY, How to Replace
in the
SERVICE AND
REPLACEMENT GUIDE
).
E. If the Fan Blade/Blower Wheel is not dragging on the Element Cover or the Proofer floor and the
Proofer Motor spins easily by hand but still does not run:
1. Check all electrical connections between the Power Switch and the Proofer Motor. All
connections must be clean and tight.
NOTE:
It may be necessary to remove the Proofer Motor Assembly from inside of the
Proofer for electrical inspection.
2. Check for voltage from the Power Switch to the Proofer Motor. If voltage is present but the
Motor does not run it must be replaced (refer to
PROOFER MOTOR/FAN ASSEMBLY,
How to Replace
in the
SERVICE AND REPLACEMENT GUIDE
).
V. One or more Indicator Lights do not function:
An Indicator Light tells 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 Light
does not go on the Light itself is bad and should be replaced (refer to
INDICATOR LIGHT, How
to Replace
in the
SERVICE AND REPLACEMENT GUIDE
).
NU-VU
®
FOOD SERVICE SYSTEMS MENOMINEE MICHIGAN 49858-0035
(800) 338-9886 Sales Fax (906) 863-5889 ♦ Service Fax (906) 863-6322 page
25
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