8-2
TROUBLESHOOTING GUIDE
Model 428
Troubleshooting Guide
8
5. Product too thin. a. Missing, incorrectly installed, or
bad scraper blade.
a. Install or replace scraper blade. 6-2
b. Improper mixing of product. b. Carefully follow directions for mixing
product.
- - -
c. The viscosity adjustment is set
incorrectly.
c. Adjust accordingly. 5-2
d. Incorrect beater rotation. d. Contact a service technician. - - -
e. Dirty condensers. e. Clean regularly. 7-1
6. The freezing cylinder
walls are scored.
a. The scraper blades are damaged. a. Replace the scraper blades. 6-2
b. Missing or worn front bearing on
freezer door.
b. Install or replace the front bearing. 6-7
c. Machine was placed in Auto before
all sanitizing solution was removed
from freezing cylinder.
c. Place machine in Auto only after
priming is complete and all sanitizing
solution is removed.
6-10
d. The beater assembly is bent. d. Call a service technician to repair or
replace the beater and to correct the
cause of insufficient mix in the
freezing cylinder.
- - -
7. Excessive leakage into
rear drip pan.
a. Improper or inadequate lubrication
of driveshaft seal.
a. Use correct lubricant (Taylor Lube)
and follow lubrication procedures.
6-1
b. Bad or missing seal on driveshaft. b. Replace seal every 3 months. 9-1
c. Worn rear shell bearing. c. Contact a service technician for
replacement.
- - -
c. Seal is installed inside out. c. Install the seal correctly. 6-1
8. Excessive leakage from
door spout.
a. Improper or inadequate lubrication
of draw valve O-rings.
a. Use correct lubricant (Taylor Lube)
and follow lubrication procedures.
6-1
6-3
b. Bad or missing O-rings on draw
valve.
b. Replace O-rings every 3 months. 9-1
9. Unable to remove
driveshaft.
a. Lubricant on square end of
driveshaft.
a. Do not lubricate square end. Contact
service technician for replacement.
6-1
b. Rounded corners of driveshaft,
drive coupling, or both.
b. Contact a service technician to
replace driveshaft, drive coupling, or
both.
- - -
Problem Probable Cause Remedy
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