FLUID SYSTEM DIAGNOSTICS - Leaking
ANY LEAKS SHOULD BE REPAIRED ASAP TO PREVENT DAMAGE TO THE
SYSTEM.
PROBLEM
POSSIBLE CAUSE
SOLUTION
From inlet
Garden hose washer
Ensure the washer is present and in good condition.
From low pressure (inlet)
line fittings
Loose clamps or connections
Low pressure line should be properly sealed on barb and tightly clamped.
From float tank(option)
Float tank full of water or stuck
If float is not floating above water, check the float to see if it has filled up with water. If
necessary, drain and seal.
From pressure fittings
Fittings not tightened or taped, or
cracked
Usually metal to metal fittings should be taped with Teflon tape or lock tight to provide a tight seal.
(unless
From quick connects
Bad o-rings
If quick connect o-ring shows wear or damage, replace it.
From pump
Bad packing
If the seal leak is detected under the pump manifold, packing may be worn and in need of
replacement.
From trigger gun
Bad rod o-ring
If o-rings show wear or damage, they may need replaced.
Stripped connectors
Physical damage may not be apparent, but unseen warping from freezing or extreme pressure
can still cause leakage.
From nozzle
Weep gun (optional)
If a weep gun has been installed, check the gun valve seat to ensure it is functioning properly.
Damage gun valve ball or seat
Inspect trigger gun valve assembly for damage or ware to ball or seat. Lodged debris can stop
valve from closing. Repair with kit or replace.
From unloader
Bad o-rings or seals
If quick connect o-ring shows wear, damage or improper seating.
From variable pressure
Lance(option)
Bad o-rings at adjusting knob
Inspect o-rings for ware or damage and replace as necessary.
Unloader will not unload
Debris in unloader
Take bottom nut off unloader, identify ball, spring and seat. Clean out any debris and
reassemble.
Sever leak on the outlet of unit
Check for leaks and repair.
From pressure relief valve
System over pressure
See pressure and flow diagnostics to find the cause of the excessive pressure and correct it.
Clogged nozzle
Spray pattern will be distorted if nozzle is clogged, clean out.
Trigger gun valve not working
If trigger gun valve action is not correct, repair or replace.
Excessive pressure spike
If water spurts from valve when trigger is released, check unloader adjustment. Pressure spike
should be below the level where pressure relief valve is activated.
Wear or damage to ball or seal
Inspect ball and seal for damage and adjust as necessary.
Improper relief valve adjustment
Adjust valve properly.
