14 Model 390Operating 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. 6
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. 7
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. 6
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. 7
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.
7
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.Impr oper or inadequate
lubrication on drive shaft
o-ring or seal on drive
shaft.
a. Use an approved food
grade lubricant (example:
Taylor Lube) andf ollow
lubrication procedures.
7
b. Bad or missing o-ring or
seal on drive shaft. b. Replace rubber parts every
3 months. 16
c. Worn rear shell bearing. c. Contact a service
technician for replacement. ----