Taylor 430 Torque, Service Manual

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22
Troubleshooting
Model 430
General Troubleshooting Guide
PROBLEM PROBABLE CAUSE REMEDY
1. No freezer operation with power
switch in the “AUTO” position.
a. Unit unplugged. a. Plug main power cord in the wall
receptacle.
b. Fuse blown or circuit breaker in the
“OFF” position.
b. Replace the fuse or place breaker
in the “ON” position.
c. The beater motor is out on reset. 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.
2. With the power switch in the
“AUTO” position, the beater motor
runs, but the compressor does
not operate.
a. Tripped internal overload in the
compressor.
a. Allow the internal overload to cool.
Check for high head pressure,
refrigerant overcharge, stuck
pistons, or tight bearings.
b. Compressor is burned out. b. Replace the compressor.
c. Compressor is improperly wired. c. Check wiring against diagram on
compressor.
d. Low line voltage. d. Check the line voltage at terminal
block. Locate cause of voltage
drop.
e. Single-phasing compressor
contactor.
e. Replace the compressor contactor.
3. Unit short cycles. a. Cycling on high pressure cut-out.
Cut in: 404A: 340 PSI (2,344 kPa.)
Cut out: 404A: 440 PSI (3,034 kPa.)
a. Check the water supply (water-
cooled units only), and make sure
the condenser is clean. Check for
potential refrigerant overcharge.
4. Compressor hums intermittently,
but will not start. Cycling on
overload.
a. Compressor is improperly wired. a. Check wiring against the diagram.
b. Low line voltage. b. Check the main line voltage, and
locate voltage drop.
c. Relay contacts not closing. c. Check by operating manually.
Replace defective relay.
5. Product too stiff. a. Temperature or viscosity control is
set too cold.
a. See the “Thermistor Control” or
PCB A. section in this manual to
reset the control.
b. Inadequate mix in the hopper. b. Fill hopper with mix.
6. Product too soft. a. Temperature or viscosity control is
set too warm.
a. See the “Thermistor Control” or
PCB A. section in this manual to
reset the control.
7. Head pressure too low. a. Shortage of refrigerant. a. Locate and repair leak. Recover
the refrigerant, evacuate, and
charge the system.
b. Water valve stuck open (water
cooled unit).
b. Clear, or replace the valve.