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Model 390 Operating Procedures
Section 8 Troubleshooting Guide
PROBLEM PROBABLE CAUSE REMEDY PAGE
REF.
1. No product being
dispensed with draw valve
opened.
a. Improper mixing of
product.
a. Carefully follow directions
for mixing product.
-- --
b. Mix low condition. b. Add mix to mix hopper. 9
2. Product too thin. a. Improper mixing of
product.
a. Carefully follow directions
for mixing product.
-- --
b. Missing, incorrectly
installed or bad scraper
blades.
b. Replace or install correctly. 10
c. Consistency control needs
adjusting.
c. Contact a service
technician.
-- --
3. Product too stiff. a. Consistency control knob
needs adjusting.
a. Contact a service
technician.
-- --
b. Improper mixing of
product.
b. Carefully follow directions
for mixing product.
-- --
c. Insufficient product in the
freezing cylinder.
c. Keep hopper full of mix. 9
4. Scored walls of freezing
cylinder.
a. Broken beater pins. a. Repair or replace beater
assembly.
-- --
b. Gear unit out of alignment. b. Contact a service
technician.
-- --
c. Bent beater assembly. c. Repair or replace. -- --
d. Missing front bearing. d. Replace or install front
bearing.
10
5. Unable to remove drive
shaft.
a. Lubrication on hex end of
drive shaft.
a. Do not lubricate the hex
end. Contact service
technician for removal.
10
b. Rounded corners of the
drive shaft, drive coupling
or both.
b. Replace drive shaft, drive
coupling or both.
-- --
6. Excessive mix leakage in
rear drip pan.
a. Improper or inadequate
lubrication on drive shaft
o--ring or seal on drive
shaft.
a. Use an approved food
grade lubricant (example:
Taylor Lube) and follow
lubrication procedures.
10
b. Bad or missing o--ring or
seal on drive shaft.
b. Replace rubber parts every
3 months.
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c. Worn rear shell bearing. c. Contact a service
technician for replacement.
-- --