7E
TROUBLE SHOOTING YOUR SPRAYER
Symptom
Possible Reason
Correction
Diffculty actuating the pumphandle and/or
Upper valve plate sticks
Clean or replace valve plate
pump handle moves itself back up.
Piston cylinder outlet passage clogged
Clean piston cylinder outlet passage
Little or no resistance during
Damaged/worn/dirty/upper valve plate
Clean or Replace Valve Plate
repeated pumping – no pressure.
Piston Collar or piston cylinder
Replace Piston/ Diaphragm assembly
assembly is worn
Too much resistance after just a few
Not enough air cushion in the pressure
Release pressure in pressure chamber
pumping strokes but pressure only lasts
chamber
Remove the hose & drain pressure
briefy.
chamber. Reconnect the hose.
Upper valve plate damaged/worn/dirty
Clean or replace upper valve plate
Upward pumping action is more diffcult
Vent hole is clogged
Clear the vent hole in cap
and/orpump handle moves itself backdown.
Lower valve plate sticks
Clean or replace the valve plate
Clogged intake filter
Clean the In-Tank filter
Piston cylinder intake clogged
Clean piston cylinder intake
Leaks at Piston Cylinder
Damaged/worn/Dirty Collar
Replace Piston/ Diaphragm assembly
Damaged Piston Cylinder
Replace Piston/ Diaphragm assembly
Damaged Piston
Replace Piston/ Diaphragm assembly
Shut-off leaks
Connections loose
Tighten connection
Worn or damaged shut-off
Rebuild or replace the shut-off valve
Wand assembly leaks
Connections loose
Tighten connection
Damaged or worn o-ring/gasket
Replace o-ring/gasket
Nozzle assembly leaks
Connections loose
Tighten connection
Damaged or worn o-ring/gasket
Replace o-ring/gasket
Leak between pump assembly
Pump clamp loose
Tighten clamp
and tank
O-ring worn or damaged
Replace pressure chamber oring
Hose leaking at tank outlet
Hose clamp loose
Tighten clamp
Hose leaking at shut-off
Connection loose
Tighten retaining nut
Damaged or worn o-ring/gasket
Replace o-ring/gasket