Groen TDB/8-20-CFC, Operator'S Manual

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OM-TDB/8-20-CFC 11
OM-TDB/8-20-CFC
SYMPTOM WHO WHAT TO CHECK
Items marked with (
Y
) should only by done by a factory-authorized service rep.
Motor will not run; kettle does not User a. Check that plug is firmly plugged into wall outlet.
heat. b. Check that branch circuit is on. Check fuse or circuit
breaker for the outlet. Other equipment on the same
circuit may cause an overload.
Auth c. Loose wire.
Y
Service
Rep. Only
Motor circuit breaker trips User a. Fudge may be too thick. Lift agitator off the top of the
frequently shaft and restart the motor. If the shaft turns, the
fudge is too thick. Add water until the motor will turn.
Auth b. Drive shaft bushing binding. Remove agitator. Put
Service two drops mineral oil on top of the shaft on the inside
Rep. Only of the white plastic bushing. When you turn on the
motor the bushing should not rotate. If it does,
replace it.
Y
c. Start/run capacitors reversed. Check wiring
diagram.
Y
Motor circuit breaker trips Auth d. Start relay stuck in closed position. Measure current
frequently (Continued) Service in start winding (red wire). After motor starts current
Rep. Only should drop to zero.
Y
Kettle makes grinding noise Auth Some amount of noise is normal for this kettle and does
Service not necessarily indicate a problem..
Rep. Only a. Drive belt may be loose or misaligned.
Y
b. Gearbox pulley not properly secured to shaft.
Y
c. Drive shaft bushing is binding.
Y
NOTE: Probes and controllers in kettles built before 1989 are not compatible with those built in 1989 or
later. The earlier controller (silver colored model 1020 — Groen Part Number 072038) must be
used with the probe identified by brown lead wires (Groen Part Number 073414). The later
version controller (Groen Part Number 077889) must be used with the probe identified by yellow
sleeving on the lead wires (Groen Part Number 086407), or improper heating will result.
Electrical Specifications
Probe Resistance Before Jan 1, 1989 508 Ohms ± two percent in a stirred ice bath
after Jan 1, 1989 500 Ohms ± one percent in a stirred ice bath
Motor winding resistance at 72ºF 120 Volts Red to Yellow 23.6 Ohms
Blue to Yellow 3.1 Ohms
240 Volts Red to Yellow 19.7 Ohms
Blue to Yellow 15.1 Ohms
No-load running current 120 Volts 1.8 Amperes
240 Volts 1.0 Amperes
Full-load running current 120 Volts 2.5 Amperes
240 Volts 1.3 Amperes
Motor Speed 60 Hz 3382 RPM at full load
50 Hz 2810 RPM at full load
Agitator Speed (no-load) 60 Hz 42 RPM
50 Hz 35 RPM
Motor start/circuit breaker trip current 120 Volts 2.9 Amperes
249 Volts 1.35 Amperes
Over-temperature switch opening temperature 195ºF ± 6ºF
Heater Power 120 Volts and 240 Volts 1850 Watts
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OM-TDB/8-20-CFC