20
Model 490
Troubleshooting Guide
Section 8
Troubleshooting Guide
PROBLEM
PROBABLE CAUSE
REMEDY
PAGE
REF.
1. No product being
dispensed (draw valve
open and machine in
“AUTO” mode).
a. Freeze-up in the mix inlet
hole.
a. Call service technician to
adjust mix hopper
temperature.
- - -
b. Beater motor out on reset.
b. Allow the motor to cool.
9
c. Beater rotating
counter-clockwise from
operator end.
c. Contact service technician
to correct rotation to
clockwise from operator
end.
- - -
d. Circuit breaker off or
blown fuse.
d. Turn breaker on or
replace fuse.
- - -
e. Inadequate mix in the mix
hopper.
e. Fill mix hopper with mix.
14
2. Product too stiff.
a. EVC control set
incorrectly.
a. Contact service
technician.
- - -
b. Inadequate mix in hopper.
b. Fill hopper with mix.
14
3. Product too soft.
a. EVC control set
incorrectly.
a. Contact service
technician.
- - -
b. Not enough air space
around unit.
b. Allow for adequate air flow
across the condenser.
2
c. Worn scraper blades.
c. Replace regularly.
18
d. Dirty condenser.
d. Clean monthly.
19
e. Out-of-date mix.
e. Use only fresh mix.
- - -
4. Mix in mix hopper too
cold.
a. Temperature out of
adjustment.
a. Call service technician.
- - -
5. Mix in mix hopper too
warm.
a. Temperature out of
adjustment.
a. Call service technician.
- - -
b. Warm mix placed in
hopper.
b. Mix should be below
40
_
F. (4.4
_
C.) when
placed in hopper.
18
c. Mix hopper cover or
gasket not in position.
c. Place cover and gasket in
position.
15
