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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 v alve
opened.
a. Improper m ixing of
product.
a. Carefully follow directi ons
for mixing product .
--
b. Mix low condit ion. b. Add mix to mix hopper. 9
2. Product too thin. a. Improper m ixing of
product.
a. Carefully follow directi ons
for mixing product .
--
b. Missing, incorrectly
installed or bad scraper
blades.
b. Replace or install c orrectly. 10
c. Consistency control needs
adjusting.
c. Contact a service
technician.
--
3. Product too stiff. a. Consistency contr ol knob
needs adjus ting.
a. Contact a service
technician.
--
b. Improper m ixing of
product.
b. Carefully follow directi ons
for mixing product .
--
c. Insufficient product i n the
freezing cylinder.
c. Keep hopper full of m ix. 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 r eplace. --
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 s ervice
technician for removal.
10
b. Rounded corner s 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 lubr icant (example:
Taylor Lube) and follow
lubrication procedures.
10
b. Bad or missing o- ring or
seal on drive shaft .
b. Replace rubber part s every
3 mont hs.
19
c. W orn rear shell bearing. c. Contact a service
technician for replacement .
--