30
Maintenance
The following tables list common operating problems and possible solutions. If your machine exhibits problems not
listed here, or if the suggested solution does not solve your problem, contact your distributor or a customer service
representative. When contacting factory customer service please refer to the machine identification tag inside the
front cover of this manual for detailed machine specifications.
Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
POOR CLEANING
PERFORMANCE
Parts are obstructing each other
Check the position of parts on turntable; position parts
to allow flow of cleaning solution around and between
them.
Low water level in sump
Check sump water level; add water if necessary.
Clogged or improperly aligned
spray nozzles
Check spray nozzles for obstructions and
alignment; clean and align if necessary.
Low detergent concentration.
Should be 10-11 pH
Add 1-2 scoops of detergent and observe cleaning
performance; add 1-2 scoops more if necessary.
Wash solution is not properly
heated
See
wash solution is not heating
below.
Pump is not operating properly
See
pump does not operate properly
.
WASH SOLUTION
NOT HEATING
Blown fuse
Refer to
Troubleshooting the Electrical System
.
Thermostat is incorrectly set
Check thermostat setting; set to 180°.
Excess debris is built up around
heating element
Check for debris build up around heating element;
clean out if necessary.
Line voltage is too low
Contact a licensed electrician to verify that the
incoming line voltage meets requirements.
Failed heater timer
Test the heater timer; replace if necessary.
Failed thermostat
Test the thermostat; replace if necessary
Failed heating element
Test the heating element; replace if necessary.
FOAMING
Machine operating with cold water Bring water up to correct temperature.
Grease, high detergent motor oils,
transmission oil, gear lubes,
synthetic oils
Do not place oil pan or transmission pan into
machine without pouring oil out of it.
Not enough detergent
Add more detergent, check pH level. Use
de-foamer.
WHITE POWDER
ON PARTS
Solution is old
Change sump water and recharge with fresh
detergent and vapor corrosion inhibitor.
Water hardness and TDS
(totally dissolved residue)
Use a water softener and/or change your sump water
more frequently.
Large parts can dry before
solution runs off, leaving powdery
residue
Turn heat down to approximately 140°.
WASH SOLUTION
TOO HOT
Failed thermostat
Replace the thermostat.
CUDA 7248 Operator’s Manual 9.801-712.0 - AA
