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Model 490Troubleshooting Guide
150625
PROBLEM PROBABLE CAUSE REMEDY PAGE
REF.
6. Drive shaft stuck in the
drive coupling.
a. Rounded corners of drive
shaft, coupling or both.
a. Call service technician to
correct cause and replace
the necessary
components. Do not
lubricate hex end of drive
shaft.
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b. Mix and lubricant collected
in drive coupling.
b. Brush clean rear shell
bearing area regularly.
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c. Misalignment of rear
bearing plate.
c. Contact service
technician.
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10. The freezing cylinder walls
are scored.
a. The scraper blades and/or
blade clips are damaged.
a. Replace the scraper
blades and/or clips.
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b. The front bearing is
missing or worn on the
freezer door.
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.
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8. Excessive mix leakage
into drive shaft drip pan.
a. Missing or worn drive
shaft seal on drive shaft.
a. Install or replace regularly.
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b. Drive shaft seal installed
inside out.
b. Install seal properly.
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c. Missing or worn drive
shaft o-ring.
c. Install or replace regularly.
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d. Worn rear shell bearing. d. Call service technician to
replace rear shell bearing.
---
9. Excessive mix leakage
from door spout.
a. Missing or worn draw
valve o-rings.
a. Install or replace regularly.
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b. Inadequate lubrication of
draw valve o-rings.
b. Lubricate properly.
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c. Wrong type lubricant
being used (Example:
petroleum base lubricant).
c. Use proper lubricant
(Example: Taylor Lube).
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