TMG TMG-HW28, Product Manual

Page: 20 / 41

QUICK DIAGNOSTICS AND SOLUTIONS GUIDE
PUMP TYPE OF OIL
GP Pump SAE 15W-40 Non-Detergent
PROBLEM POSSIBLE CAUSES SOLUTIONS
PRESSURE
No pressure or
Very low
pressure
Metal in oil
- Examine oil in pump to see if there is metal in oil.
- If you find traces or pieces of metal, your
pump has damaged components.
Dirt in water
- Verify if there is dirt in nozzle tip or in valves in
pump.
- If nozzle is plugged, clean or replace it.
- If valves in pump are clogged, clean valves.
-
If valves in pump are damaged or pitted,
replace valves.
Wrong nozzle size
- Make sure you have the right nozzle size. The
black nozzle will drop pressure in order to use
chemical injector and is only for soap or chemical. If
you are not using soap, use a different color.
Pressure too high
Wrong nozzle size
- Make sure you have the right nozzle size.
Unloader adjusted improperly
or damaged
- Check pressure of pump with a pressure gauge
and adjust to desired pressure.
- If you cannot reduce pressure, replace unloader.
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