Chapin TREE PRO Manuel D'utilisation Et D'entretien page 7

STORING / MAINTAINING YOUR SPRAYER
• The sprayer should be stored out of direct sunlight in a cool dry space.
• Before freezing weather make sure to drain all liquid in the tank, pump, pressure cylinder, hose,
shut-off valve, wand and nozzle, to avoid liquid expansion and cracking in the sprayer components
(See "Cleaning" section). Lock the shut-off valve in the "open" position.
• When service is required call your nearest dealer and always insist on original manufactured
replacement parts.
• Inspect the hose, wand, pump, tank and shut-off valve for wear, damage or leaks on a regular basis
and repair defects promptly.
TROUBLE SHOOTING YOUR SPRAYER
Symptom
Difficulty actuating the pump
lever and/or pump handle
moves itself back up.
Little or no resistance during
repeated pumping – no
pressure.
Too much resistance after just
a few pumping strokes but
pressure only lasts briefly.
Upward pumping action is more
difficult and/or pump handle
moves itself backdown.
When the handle is pulled up it
moves itself back down
Leaks at Piston Cylinder
Shut-off leaks
Wand assembly leaks
Nozzle assembly leaks
Leak between pump
assembly and tank
Hose leaking at tank outlet
Hose leaking at shut-off
Chapin Backpack Sprayer Operator's Manual - English
Possible Reason
Upper valve plate sticks
Piston cylinder outlet passage clogged
Damaged/worn/dirty/upper and or lower
valve plate
Damaged /worn upper o-ring on piston
Piston Collar or piston cylinder assembly is
worn
Not enough air cushion in the pressure
chamber
Upper valve plate damaged/worn/dirty
Vent hole is clogged
Lower valve plate sticks
Clogged filter
Piston cylinder intake clogged
Valve Plate sticking
Damaged/worn/Dirty Collar
Damaged Piston Cylinder
Damaged Piston
Connections loose
Worn or damaged shut-off
Connections loose
Damaged or worn o-ring/gasket
Connections loose
Damaged or worn o-ring/gasket
Pump clamp loose
O-ring worn or damaged
Hose clamp loose
Connection loose
Damaged or worn o-ring/gasket
Correction
Clean or replace valve plate
Clean piston cylinder outlet passage
Clean or Replace Valve Plate
Replace O-ring
Replace Collar or Piston cylinder
assembly
Release pressure in pressure chamber.
Remove the hose & drain pressure
chamber. Reconnect the hose.
Clean or replace upper valve plate
Clear the vent hole in cap.
Clean or replace the valve plate
Clean in tank filter
Clean piston cylinder intake
Clean or replace valve plate
Clean or Replace Piston Collar
Replace Piston Cylinder
Replace Piston
Tighten connection.
Rebuild or replace the shut-off valve.
Tighten connection.
Replace o-ring/gasket.
Tighten connection.
Replace o-ring/gasket.
Tighten clamp.
Replace pressure chamber o-ring.
Tighten clamp.
Tighten retaining nut.
Replace o-ring/gasket.
6E