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Models H71 & H84 Troubleshooting Guide
PROBLEM PROBABLE CAUSE REMEDY PAGE
REF.
4. Drive shaft stuck in gear box
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 end of drive
shaft.
----
b. Mix and lubricant collected in
drive coupling.
b. Brush clean rear shell bearing
area regularly.
33
5. No product being dispensed
with draw valve open and
machine in AUTO mode.
a. Freeze-up in mix inlet hole. a. Call service technician to
adjust hopper temperature.
----
b. Beater rotating counter-clock-
wise.
b. Contact service technician to
correct rotation to clockwise.
----
c. Inadequate mix in hopper. c. Fill hopper with mix. 29
d. Air orifice not installed. d. Install in assembled inner air
tubes.
27
e. Inner air tube in the closed
position.
e. Place inner air tube in the
open position.
28
6. Product too stiff. a. Barrel viscosity set too cold. a. Contact service technician to
adjust barrel viscosity.
----
b. Air orifice not installed. b. Install in assembled air tubes. 27
c. Inner air tube in the closed
position.
c. Place inner air tube in the
open position.
28
7. Product too soft. a. Barrel viscosity set too warm. a. Contact service technician to
adjust barrel viscosity.
----
b. Not enough air space around
unit (air-cooled).
b. Allow for adequate air flow
across the condenser(s).
1
c. Worn scraper blades. c. Replace regularly. 39
d. Dirty condenser (air-cooled). d. Clean regularly. 34
e. Out-of-date mix. e. Use only fresh mix. 29
f. Loss of condenser cooling
water (water-cooled).
f. Locate cause of water loss
and correct.
34
8. Mix in hopper too cold. a. Temperature out of
adjustment.
a. Call service technician to
adjust hopper temperature.
----
9. Mix in hopper too warm. a. Temperature out of
adjustment.
a. Call service technician to
adjust hopper temperature.
----
b. Hopper cover not in position. b. Place cover in position. ----
c. Agitator not installed, or
installed upside down.
c. Install agitator correctly. 27
d. Agitator not rotating. d. Remove agitator and clean. 27
10. Freezing cylinder walls
scored.
a. Beater assembly bent. a. Call service technician to
repair or replace beater and
to correct cause of insufficient
mix in freezing cylinder.
----
b. Missing or worn front bearing. b. Install or replace front bearing. 39