|
Loss of liquid pressure.
|
Pump clutch disengaged.
|
Engage pump drive clutch.
|
|
|
Spray tank empty.
|
Fill tank.
|
|
|
Pump running too slow.
|
Increase engine speed.
|
|
|
Line strainer clogged.
|
Clean strainer.
|
|
|
Pump drive belt broken or slipping.
|
Replace belt. Check belt tensioner.
|
|
|
Leaks in the suction line or suction line fittings. (Hard to locate because air leaks inward.)
|
Replace hose and tighten fittings.
|
|
|
Obstruction in suction hose or pressure hose to valve, such as deteriorating hose liner. (Not noticeable from outside.)
|
Remove obstruction or replace with new hose if hose is faulty.
|
|
|
Collapsed suction hose.
|
Replace with new hose.
|
|
|
Nozzle tips (orifices) worn, increasing flow and reducing pressure.
|
Replace nozzle tips with new tips calibrated for the application desired.
|
|
|
Pump shaft seal leaking.
|
Check seal and replace if worn.
|
|
|
Faulty pressure gauge sender.
|
Check pressure sender.
|
|
|
Faulty control valve.
|
Repair valve.
|
|
Erratic pressure reading.
|
Air trapped in system.
|
Loosen lines and operate pump to release trapped air.
|
|
|
Flowmeter dirty or stuck.
|
Clean flowmeter.
|
|
Pump not primed.
|
Air in pump.
|
Clean bleed tube.
|
|
Unable to obtain desired pressure at high flow rate.
|
Solution flow is by-passing.
|
Reduce agitation.
|