15
Model 428
Troubleshooting
PROBLEM
PROBABLE CAUSE
REMEDY
8. Hot liquid line.
a. Shortage of refrigerant.
a. Repair leak and recharge system.
9. Frosted liquid line.
a. Restricted dryer or tubing.
a. Replace or remove restrictions.
10. No product being dispensed.
a. Control switch is in the OFF position.
a. Place the control switch in the
AUTO position.
b. Freeze‐up in the mix feed tube.
b. Adjust hopper temperature by
readjusting the E.P.R. pressure.
c. 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.
d. Incorrect beater rotation. (Rotation
should be clockwise when viewed
from the front of the unit.)
d. Reverse any two of the three
incoming power lines (three phase
units only). For single phase units,
the motor must be rewired
according to the instructions on the
motor.
e. Circuit breaker out.
e. Check breaker or fuse.
f.
Faulty draw switch.
f.
Repair or replace switch.
g. Inadequate mix in the hopper.
g. Fill the hopper with mix.
11. Scored freezing cylinder walls.
a. Missing or worn front bearing on the
freezer door.
a. Install or replace front bearing.
b. Bent beater assembly.
b. Replace beater and correct the
cause of insufficient mix in the
freezing cylinder.
12. Product not feeding into the
freezing cylinder.
a. Inadequate mix in the hopper.
a. Fill the hopper with mix.
b. Freeze‐up in the mix inlet hole.
b. Adjust hopper temperature.
13. Drive shaft stuck in the drive
coupling.
a. Mix and lubricant collected in the
drive coupling.
a. Brush clean rear shell bearing area
regularly.
b. Rounded corners of the drive shaft,
coupling, or both.
b. Replace worn component(s).
14. Excessive mix leakage through
the rear of the unit into the drip
pan.
a. Worn or missing drive shaft boot
seal.
a. Replace boot seal.
b. Inadequate lubrication of the drive
shaft boot seal.
b. Lubricate the boot seal according
to the Operator's Manual.
c. Worn rear shell bearing.
c. Replace bearing.
d. Drive shaft works forward.
d. Check gear alignment and scraper
blades. Make sure the beater is not
bent.
e. Wrong type of lubricant being used.
e. Use lubricants recommended in the
Operator's Manual.
Summary of Contents for 428
Page 2: ......
Page 14: ...10 Systems and Controls Model 428 Refrigeration System...
Page 16: ...12 Systems and Controls Model 428 Notes...
Page 25: ...21 Model 428 Parts Notes...
Page 26: ...22 Parts Model 428 150205 Model 428 Exploded View Figure 1...
Page 29: ...25 Model 428 Parts 141119 Beater Door A With Standard Door No Prime Plug Figure 3...
Page 31: ...27 Model 428 Parts 150121 Beater Door A With Self Closing Prime Plug Door Figure 4...
Page 33: ...29 Model 428 Parts 150715 Panel A Front X62986 12 Figure 5...
Page 49: ...Model 428 062598 27 10 13 13 Taylor Company...
