14 OM-TDB/TDBC-CE
Troubleshooting
Your kettle is designed to operate smoothly and efficiently if properly maintained. However, the following is a list of checks to make
in the event of a problem. Wiring diagrams are furnished inside the service panel. X indicates items which must be performed by
an authorized technician.
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY UNIFIED BRANDS OR THEIR
AUTHORIZED DISTRIBUTORS CAN CAUSE INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL
WARRANTIES.
SYMPTOM
WHO
WHAT TO CHECK
Kettle will not heat, and
heating indicator will not
come on.
User
a. Electric power supply to the unit. (Check the circuit breaker.)
b. Water level in jacket.
Authorized
Service Rep Only
c. Control circuit fuses. Replace a blown fuse only with a fuse of the
same AMP rating. X
d. For loose or broken wires. X
e. Tilt cut-off switch. X
f. That pressure switch is open. X
g. Operation of variable thermostat. X
h. Low water cutoff. X
Kettle will not heat, but
heating indicator comes
on.
Authorized
Service Rep Only
a. Thermostat calibration. X
b. Heater elements with ohmmeter for ground short or open element. If
element is defective, call service. X
Kettle continues heating
after it reaches the
desired temperature.
User
a. Thermostat dial setting.
Authorized
Service Rep Only
b. Thermostat circuit for short. X
c. Thermostat operation. The thermostat should click when the dial
is rotated above and below the setting for the temperature of the
kettle. X
d. Contactor, to determine whether it is energized or stuck. X
Kettle stops heating
before it reaches the
desired temperature.
User
a. Thermostat dial setting.
Authorized
Service Rep Only
b. Thermostat calibration. X
c. Thermostat operation. The thermostat should click when the dial
is rotated above and below the setting for the temperature of the
kettle. X
Kettle heats slowly.
User
a. For air in the jacket. See “Jacket Vacuum” in the “Maintenance”
section of this manual.
Authorized
Service Rep Only
b. Heater elements with ohmmeter for ground short or open element. If
an element is defective, call service. X
c. Voltage of main power source. X
Safety valve pops.
User
a. For air in the jacket. See “Jacket Vacuum” in the “Maintenance”
section of this manual.
Authorized
Service Rep Only
b. Pressure switch setting. X
c. Thermostat operation. Thermostat should click when the dial is
rotated above and below the setting for the temperature of the
kettle. X
d. Pressure relief valve. If the valve pops at pressures below 49 PSI
(3.38 Bar/338 kPa), replace it.
e. Contactor, to determine whether it is energized. X
