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Little to No Pressure:
Motor runs, but no pressure:
If your strainer is clean….
CHECK:
Both the counterweight and the bearing need to spin freely and both need to spin INDEPENDENTLY of
each other. If these 2 pieces are ‘stuck’ together, you will need to break them free and whether or not they
are sticking, spray some good quality lubricant or something similar on them and let it soak in and this
should restore most of your prime.
Motor not running:
Checking the Pressure Switch
.
If your motor is not running and you’ve checked the following: for loose wiring connections, fuse, the switch on
the lead wire was “ON” and made sure you were connected to a fully charged battery and everything is fine,
but the motor won’t run, then it’s time to check to see if the pressure switch is bad.
Remove the cover off 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 off the terminals and touch them together.
If the motor runs, it means the pressure switch is bad and needs to be replaced.
If it still 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, it still
could be the switch in the wire that is causing the problem.
If still not responsive, use a voltmeter or electrical tester to make sure you are getting power to the head of the pump, as it could possibly be something
in one of the wires or even the lead wire assembly may need to be replaced.
Warning:
It is NOT recommended to run the pump this way, as the pump will continue to run and not shut off.
This could result in blown hoses when all discharges are closed. Also, this could result in premature failure of the pump completely.
Try another 12-Volt battery
Quarter turn at a time clockwise until surging stops
Pump continues to run:
System has leaks
Fuse blows:
Excessive voltage
Improper adjustment of pressure switch
Damaged or defective wiring harness
Defective pressure switch
Half-moon & Counterweight are sticking
Low Pressure/Low Flow:
Check for a clogged strainer
Check for proper voltage
Pump surges:
Low flow may cause pump to surge
Spray wand is adjusted for a small or fine spray pattern
If needed, pressure switch may need to be adjusted
Troubleshooting
Pump will not run:
Check for loose wiring
Make sure the ON/OFF switch is on
on lead wire.
Check the fuse
Check for defective pressure switch
