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Before Troubleshoong or Aempng to Service the Pump:
Review Troubleshoong Chart: Do Not aempt to repair unl steps below are followed.
Personal Protecve Gear: Wear protecve gear when servicing pump.
Disconnect Power: Disconnect the power to the pump and relieve the pressure from the system.
Empty and Flush the pump system with water, never aempt to service the pump unl it has been emped and ushed.
Perform Repairs: Follow direcons provided in the troubleshoong secon to repair the pump.
Test: Always test the pump for leaks with plain water aer any repairs before using.
Motor is NOT Running - Checking the Pressure Switch:
If motor is not running and you’ve checked the following: for loose wiring connecons, fuse, the switch on
the lead wire was “ON” and sprayer was connected to a fully charged baery, but motor won’t run, then
it’s me to check to see if the pressure switch is bad.
• Remove the cover o the 1” square box (pressure switch) on the head of the pump, the cover is
held on by one phillips-head screw. This will expose the two red wires.
• With the pump connected to a good 12 volt power source and everything on.
• Slip the two red wires o the terminals and touch them together.
If the motor runs, it means the pressure switch is bad and needs to be replaced.
If motor sll doesn’t run, try bypassing the switch in the lead wire or using another
lead wire. Even if a tester shows power to the pressure switch, sll try this test.
Warning: It is NOT recommended to run the pump this way, as the pump will connue
to run and not shut o.
This could result in blown hoses when all discharges are closed or premature failure of
the pump completely.
Motor Running-No Pressure - - Cleaning the Check Valve:
If you’re experiencing lile to no pressure or the pump is not priming and lter screen
is clean and plumbing is good with no leaks, you may need to clean the check valve.
• Remove the head of the pump, which is held on by 7 screws.
• The rst piece inside the head of the pump is called a check valve, it’s the part responsible for
building up pressure and pumping water/soluon through the lines.
• Clean the check valve under hot, soapy water (such as a good grade dish soap).
• Give it a very light scrubbing with something like an old toothbrush, something with so bristles.
• Then let it soak for about an hour or so in the hot soapy soluon and replace in the pump and
reassemble the pump.
Most mes this will restore most, if not all of the prime of a pump.
If you’re sll having issues with pressure aer this step, it would be recommended to replace this part.
Why does the pump not run all the me?
This is an on-demand pump and only runs when a discharge is open (spray gun, bypass, boom (if applicable) or a leak in system.
Why does the pump surge while using the spray gun?
Low ow/high pressure may cause the pump to surge (or cycle). Typically the spray wand is adjusted at too ne of a mist, to over-
come, adjust the nozzle for a higher ow.
How do I adjust the pressure?
Pressure can only be adjusted by opening the pressure adjust (bypass) valve to allow some of your water or soluon to return to
the tank (if equipped).
Pump quit and will not run, what do I need to do?
Squeeze trigger on spray gun to ensure that the system isn’t just pressurized up with discharges closed.
Check electrical connecons, ensure switch is on. Check fuses. Check for proper voltage. Check pressure switch.
Low ow or no ow at all, what do I need to check for?
Check for a clogged or kinked intake hose and/or clogged intake strainer. Check for proper voltage.
You will need to occasionally check your intake strainer to ensure that it is clean of any debris.
What is causing the fuse to blow each me I turn the pump on?
Check for excessive voltage. Improper adjustment of pressure switch. Damaged or defecve wire harness or defecve pressure
switch.
Warning:
Ensure the wiring harness does not become pinched or damaged in any way. This may damage the pump or cause the wiring
harness to overheat, resulng in a melt down or re.
