Proofer - Nu-Vu SUB-123 Owner's Manual

SUB–123 OWNER'S MANUAL
VII. The Oven Timer [24] or Proofer Timer [36] does not run:
A. Check the electrical connections between the Oven Power Switch [21] or Proofer Power Switch
[31] and the appropriate Timer. All connections must be clean and tight.
B. Make sure that the Timer wiring is correct. Refer to the appropriate replacement procedure in the
SERVICE AND REPLACEMENT GUIDE.
C. Turn the Knob of the 60-Minute Timer back and forth several times to free it from any possible
sticking.
D. If the Timer still does not run, or runs only after the Knob has been turned back and forth several
times, the Timer must be replaced (refer to TIMER, How to Replace in the SERVICE AND
REPLACEMENT GUIDE).
VIII. The Buzzer Alarm [16] does not sound:
A. Check the appropriate Timer [24 or 36] for proper operation.
B. Make sure the Buzzer wiring is correct. One side of the Buzzer is connected to terminal "6" on
back of the standard 60-Minute Timer, and to "Out #2" on the back of the optional 99-Minute
Digital Timer. The other side of the Buzzer is connected to any common or group of common
(WHITE) wires.
C. If all connections are correct, clean and tight and the Buzzer still does not operate it should be
replaced (refer to BUZZER, How to Replace in the SERVICE AND REPLACEMENT GUIDE).
IX. 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 to the Indicator Light 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 Light itself is bad and should be replaced (refer to
INDICATOR LIGHT, How to Replace in the SERVICE AND REPLACEMENT GUIDE).

PROOFER:

I. The Proofer Power Switch is in the ON position but there are no lights, heat, humidity
or motor rotation:
A. Check the control fuses on the back panel at the top of the unit.
B. Check the main wall breaker or fuse box for a tripped power breaker or blown fuse.
C. Check the electrical connections to the Proofer Power Switch. All connections must be clean and
tight.
D. Check the voltage from the main breaker or fuse box to the Power Terminal Block and compare
it to the requirements listed on the equipment label.
E. Check the connections from the main breaker or fuse box to the Power Terminal Block (refer to
Fig. #2 on page 5). All connections must be clean and tight.
F. If all electrical connections and readings are correct as to voltage and phase the Proofer Power
Switch must be replaced (refer to POWER SWITCH, How to Replace in the SERVICE AND
REPLACEMENT GUIDE).
II. The Proofer Power Switch is in the ON position, you have lights, humidity and Proofer
Motor rotation but no heat:
A. Make sure the Proofer Temperature Control [32] is set past room temperature.
B. Check the Proofer Heating Elements [12 or 87] under the Proofer Element Cover [62]. They
should get hot to the touch a few seconds after the Proofer Temperature Control is activated.
®
NU-VU FOOD SERVICE SYSTEMS
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TROUBLE-SHOOTING GUIDE
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