General Troubleshooting Guide - Taylor 358 Service Manual

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General Troubleshooting Guide

PROBLEM
1. No freezer operation with power
switch in the "AUTO" position.
2. With the power switch in the
"AUTO" position, the beater motor
runs, but the compressor does
not operate.
3. Unit short cycles.
4. Compressor hums intermittently,
but will not start. Cycling on
overload.
5. Product too stiff.
6. Product too soft.
7. Head pressure too low.
Models 358 & 359
PROBABLE CAUSE
a. Unit unplugged.
b. Fuse blown or circuit breaker in the
"OFF" position.
c. The beater motor is out on reset.
a. The compressor internal overload
has been tripped.
b. Compressor is burned out.
c. Compressor is improperly wired.
d. Low line voltage.
e. Single-phasing compressor
contactor.
a. Cycling on high pressure cut-out.
Cut in: 404A: 340 PSI (2,344 kPa.)
Cut out: 404A: 440 PSI (3,034 kPa.)
a. Compressor is improperly wired.
b. Low line voltage.
c. Relay contacts not closing.
a. Temperature control is set too cold.
b. Inadequate mix in the hopper.
a. Temperature control set too warm.
a. Shortage of refrigerant.
b. Water valve stuck open (water
cooled unit).
19
REMEDY
a. Plug main power cord in the wall
receptacle.
b. Replace the fuse or place breaker
in the "ON" position.
c. Place the control switch in the
"OFF" position and press the reset
button firmly. Place the power
switch in the "WASH" position and
observe the freezer's performance.
Resume normal operation.
a. Allow the internal overload to cool.
Check for high head pressure,
refrigerant overcharge, stuck
pistons, or tight bearings.
b. Replace the compressor.
c. Check wiring against diagram on
compressor.
d. Check the line voltage at terminal
block. Locate cause of voltage
drop.
e. Replace the compressor contactor.
a. Check the water supply (water-
cooled units only) and make sure
the condenser is clean. Check for
potential refrigerant overcharge.
a. Check wiring against the diagram.
b. Check the main line voltage and
locate the voltage drop.
c. Check by operating manually.
Replace defective relay.
a. See the "Thermistor Control"
section in this manual to reset the
control.
b. Fill hopper with mix.
a. See the "Thermistor Control"
section in this manual to reset the
control.
a. Locate and repair leak. Recover
the refrigerant, evacuate, and
charge the system.
b. Clear or replace the valve.
Troubleshooting