Dean 1414E, Installation & Operation Manual

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6
Do not use steel wool, abrasive cloths,
cleansers, or powders! If it is necessary to
scrape stainless steel to remove encrusted
materials, soak the area with hot cloths to
loosen the material, then use a wood or nylon
scraper. Do not use a metal knife, spatula, or
any other metal tool to scrape stainless steel!
Scratches are almost impossible to remove.
7. TROUBLESHOOTING
These troubleshooting procedures must be
carried out only by a Factory Authorized Service
Agent or a local service company specializing in
hotel and restaurant cooking appliances.
FACTORY APPROVAL MUST BE OBTAINED
PRIOR TO ANY WARRANTY WORK BEING
DONE OR DEAN INDUSTRIES CANNOT BE
HELD RESPONSIBLE.
7.1 If the elements will not turn on and there
is no evidence of heating the vessel even
when cold, check the following:
a) With the proper ON/OFF switch "ON",
manually reset the high temperature limit
switch (push the red button behind the
access door).
b) Check that the branch or main circuit
breakers or fuses are not tripped or
blown.
c) Check that correct line voltage exists
across block terminals L1-L2, L2-L3, and
L3-L1 (three-phase connection), or L1-
L2 (single-phase connection).
d) Check that correct line voltage exists on
all terminals on the load side of the
circuit breakers.
e) If the panel indicator light is glowing but
contactors are not actuated, check
continuity of the two holding coil circuits,
from the indicator light to L2.
f) If the panel indicator light is not glowing,
first check that line voltage does not
exist across the lamp, then:
1) Check the fuse for line voltage
between the load side and L2.
2) Check the power on/off switch for line
voltage between the load side and
L2.
3) Check the high limit thermostat for
line voltage between the load side
and L2; if resetting does not produce
results, replace the device.
4) Check the operating thermostat for
line voltage between the load side
and terminal L2; if defective, replace
the part.
5) Check the wiring to the temperature
controller.
7.2 Poor temperature control on the cold
side; warm-up time excessive; slow or
inadequate temperature recovery when
vessel loaded; uneven heating.
a) Check temperature controller
adjustment: Place the sensing bulb of a
high quality immersion thermometer
about 1-1/2 inches above the thermostat
sensing bulb or RTD probe and set the
controller dial for 350°F. Wait at least 20
minutes for the oil temperature to
stabilize. If the temperature is not with
+/-10°F of the dial setting, see "Probe
Test" below for the solid state
"Thermatron" controller or call for
service for an operating thermostat.
b) With the panel indicator light glowing,
check that both holding coil circuits or
contactors are energized and contactors
are actuated.
c) Check the load side of the contactors to
the heating element terminals. Each
element should draw about 30 amps
(208V) or 26 amps (240V).