6.6
Pinto BT-POM 1212 - Revision 5
Trouble Shooting
Foam Marker Prob lems - RHS Marker
PROBLEM
A Marker doesn’t run at all
B Air pump runs – nothing coming out –
no pressure showing on gauge
C Nothing coming out – high pressure
showing
PROBABLE CAUSE
1 Harness plug not plugged in or
2 Circuit breaker popped or fuse blown.
1 Liquid pump shut Off or not primed.
(Hint: When working on liquid pump, it is helpful to
unplug the air pump so you can hear the liquid pump
running. Remove the two black wires form the air pump
and clamp them together).
2 Electronic speed control failed causing liquid pump
not to run.
(Hint: When working on liquid pump, it is helpful to
unplug the air pump so you can hear the liquid pump
running)
3 Liquid pump valves or diaphragm have failed.
4 Liquid pump motor failed.
1 Liquid orifi ce plugged.
REMEDY
1 Check all wiring plugs and connections.
2 Check breaker/fuse and reset/replace if necessary.
1 Turn liquid control knob clockwise as far as it will
go. This will run the pump at full speed to aid in
priming. Allow a minute or two to prime.
If it still won’t prime, fi nd the liquid orifi ce assembly
near the discharge of the pump & uncouple briefl y
to allow air pressure to be relieved.
If it still doesn’t prime, either the tank strainer/
outlet is completely plugged or the pump needs
service or replacement.
2 Check this component by feeling and listening to
the motor while you turn the knob up & down. If
it speeds up & slows down, the control & pump
motor are OK. If not,unplug the liquid pump from
the speed control. Using jumper wires, apply 12
Volts DC directly to the liquid pump. It should run
full speed indicating the pump is OK & the Speed
Control is not working.
Check polarity of wires to power supply. speed
control will not operate in reverse polarity. If you’re
absolutely sure it is correct, replace the electronic
speed control.
3 If the liquid pump appears to run normally as
described above, but can’t prime or pump the
liquid, it may need a new diaphragm, or valve
cartridge. We suggest replacing both.
4 If you’ve determined in the above step the liquid
pump did not work when 12 Volts was applied,
replace pump motor or whole pump.
1 Find liquid orifi ce assembly near outlet of liquid
pump. Unplug orifi ce and clean orifi ce strainer.
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