Vollrath Stoelting O431, Service Manual

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7.3 TROUBLESHOOTING - MACHINE
PROBLEM POSSIBLE CAUSE REMEDY
Machine does not
run.
1 Power to machine is off. 1 Supply power to machine.
2 Freeze-up (auger will not turn). 2 Turn Clean/Off/On switch Off for 15 minutes,
then restart.
3 Front door not in place. 3 Assemble front door in place.
Machine will not
shut off.
1 Drive belt failure. 1 Replace drive belt.
2 Consistency temperature setting is too
fi rm.
2 Turn Consistency Adjustment knob counter-
clockwise.
3 Refrigeration problem. 3 Check system. (Call distributor for service)
Product is too fi rm.
1 CutOut Consistency setting too high 1 Adjust the CutOut Consistency (See Section 3)
Product is too soft.
1 No vent space for free fl ow of cooling
air.
1 A minimum of 3” of air space at the back. (See
Section 2)
2 Condenser is dirty. 2 Clean the condenser. (See Section 3)
3 CutOut Consistency setting too low 3 Adjust the CutOut Consistency (See Section 3)
4 Auger is assembled incorrectly. 4 Remove mix, clean, reassemble, sanitize and
freeze down.
5 Refrigeration problem. 5 Check system. (Call distributor for service)
Product does not
dispense.
1 No mix in hopper. 1 Add mix to the hopper.
2 Drive motor overload tripped. 2 Wait for automatic reset. (If condition
continues, call distributor for service.)
3 Drive belt failure. 3 Replace drive belt.
4 Freeze-up (Auger will not turn). 4 Turn off cylinder, wait for 15 minutes, then
restart.
Drive belt slipping
or squealing.
1 Worn drive belt. 1 Replace drive belt.
2 Freeze-up (Auger will not turn). 2 Turn off cylinder, wait for 15 minutes, then
restart.
3 Not tensioned properly. 3 Adjust belt tension
Rear auger seal
leaks.
1 Outside surface of rear auger seal is
lubricated.
1 Clean lubricant from outside of rear seal,
lubricate inside of seal and reinstall.
2 Rear seal missing or damaged. 2 Check or replace.
3 Seal o-ring missing, damaged or
installed incorrectly.
3 Check or replace.
4 Worn or scratched auger shaft. 4 Replace auger shaft.
Front door leaks.
1 Front door knobs are loose. 1 Tighten knobs.
2 Spigot parts are not lubricated. 2 See Section 3.
3 Chipped or worn spigot o-rings. 3 Replace o-rings.
4 O-rings or spigot installed wrong. 4 Remove spigot and check o-ring.
5 Inner spigot hole in front door nicked
or scratched.
5 Replace front door.