MotorVac COOLANTCLEAN III - Manual (Page 17)

Troubleshooting and Additional Help
Refer to the list below in the unlikely event that you have problems with your
CoolantClean Engine Cooling System Service Unit.
Problem:
Solution:
1. The unit’s light is lit but no other
functions are available from the
control panel switches.
Polarity is reversed on vehicle battery
connection, correct as necessary.
2. Unit’s pump starts but does not supply
coolant (no pressure or very low
pressure on the gauge).
a. Unit’s pressure pump needs to be primed.
See: Before You Begin section
b. Internal screen filter (top of clean fluid tank)
or siphon tube may be plugged up.
c. 10 psi control check valve may be stuck
open. (Dumps fluid back into clean tank).
3. Vacuum pump is running but there is no
suction from the red hose.
Check the external filter for a clogged condition.
Clean if necessary.
“By-pass” check valve may be stuck open
allowing suction into the clean fluid tank.
Waste hose must be connected to allow
‘outflow”.
4. Vehicle and machine are both running
but there is no flow to the drain hose.
Check connection of unit’s hoses to adapters.
Engine may need to be accelerated.
Verify engine’s temperature, vehicle may be
too cold and thermostat may be closed.
5. The unit’s pressure gauge is at 10 to 15
psi. And there is no flow to the drain
hose.
a. Check for kinked condition on Green Hose.
Connections to the vehicle may need to be
reversed. Check vehicle’s flow direction & re-
connect hoses if necessary.
b. Check external filter for blockage.
6. The unit performs poorly.
Check all hoses and wires for cuts or frays.
Check cabinet for dents or impact markings.
Verify that the inter filter screen and external
filter have recently been cleaned. (Refer to the
maintenance log in Appendix A to view dates
of services).
ADDITIONAL HELP
Please verify that items 1-6 above have been reviewed before
calling for additional assistance.
In the unlikely event that problems persist with the unit, call
Technical Support. Have your model and serial numbers
available before you call. Remember to send in your warranty
card.
In the U.S. International:
(714) 558-4822 Call your local
(800) 841-8810 distributor