8-2
TROUBLESHOOTING GUIDE
Models 702/741/772
Troubleshooting Guide
8
7. The freezing cylinder
walls are scored.
a. The scraper blades are damaged. a. Replace the scraper blades.
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b. The front bearing is missing or
worn.
b. Install or replace the front bearing.
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c. Unit was placed in AUTO before all
sanitizing solution was removed
from freezing cylinder.
c. Place unit in AUTO only after priming
is complete and all sanitizing solution
is removed.
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d. Broken pins on beater assembly. d. Repair or replace the beater
assembly. Be sure the scraper blades
are properly seated on pins.
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e. The beater assembly is bent. e. Call service technician to repair or
replace the beater and to correct the
cause of insufficient mix in the
freezing cylinder.
_ _ _
8. Excessive mix leakage
into the rear drip pan.
a. Worn or missing drive shaft seal. a. Replace regularly.
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b. Inadequate lubrication of drive
shaft seal.
b. Lubricate properly.
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c. Worn rear shell bearing. c. Call service technician to replace rear
shell bearing.
_ _
d. The drive shaft works forward. d. Call service technician to correct.
_ _
e. The seal is installed inside-out on
the drive shaft.
e. Install correctly.
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f. The wrong type of lubricant is
being used (example: petroleum-
based lubricant).
f. Use the proper lubricant (example:
Taylor Lube).
_ _
9. Excessive mix leakage
from the door spout.
a. Worn or missing draw valve O-
rings.
a. Replace regularly.
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b. Inadequate lubrication of the draw
valve O-rings.
b. Lubricate properly.
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c. The wrong type of lubricant is
being used (example: petroleum-
based lubricant).
c. Use the proper lubricant (example:
Taylor Lube).
_ _
10.No freezer operation
with the control switch in
AUTO.
a. The unit is unplugged (page 1-3). a. Plug into wall receptacle.
_ _
b. Circuit breaker off or blown fuse. b. Turn circuit breaker on or replace
fuse.
_ _
c. Beater motor out on reset. c. Reset the freezer.
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11.Low over-run. a. Worn scraper blade(s). a. Replace regularly.
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b. The mix feed assembly is not
installed.
b. Install in mix inlet hole.
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c. Product is broken down from over-
beating.
c. Draw off some product to allow fresh
product to enter the freezing cylinder.
_ _
12.The freezer door works
loose.
a. The freezer studs are damaged. a. Call service technician to replace
studs.
_ _
b. The handscrews are damaged. b. Replace the handscrews.
_ _
c. There are enlarged holes in the
freezer door.
c. Replace the door.
_ _
d. The handscrews are not tightened. d. Tighten the handscrews equally in a
crisscross pattern.
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e. The beater assembly is rubbing the
back of the door.
e. Call service technician to correct the
problem.
_ _
Problem Probable Cause Remedy
Page
Ref.