8
MAINTENANCE
Daily
Ensure that the sprayer is cleaned daily after use. Check all hose connections
for leakage and tighten if necessary. Check that the nozzle is not blocked and clean if
necessary.
Weekly
Remove and clean the filter fitted into the handle of the trigger valve (see
'TRIGGER VALVE MAINTENANCE'). This should be done more frequently (e.g.
daily) if powder formulations are being used. Lubricate the flet washer with vegetable
oil.
At the end of every season
Check the straps and strap connections for signs of wear.
Check the seals and o-rings in the trigger valve to ensure that they are in good
condition and replace if necessary (see 'TRIGGER VALVE MAINTENANCE').
Check the seal in the filling cap and piston cover.
If the sprayer appears to be losing pressure (if it seems that you need more pump
strokes to maintain a constant output) check the piston seal for signs of wear and
replace if necessary (see 'TOREPLACETHEPISTONSEAL').
TROUBLESHOOTING
PROBLEM
CAUSE
REMEDY
No pressure or reduced or
intermittent pressure
Piston seal worn or demaged
Replace piston seal (see
"
TO
REPLACE THE PISTON SEAL"
)
Brass ball dirty or corroded
Replace or clean brass ball
(see
"TO
REPLACE THE PISTON SEAL"
)
Little or not spray from nozzle
Nozzle blocked
Remove and clean nozzle
Filter in trigger valve blocked
Remove and clean filter
(see
"TRIGGER VALVE MAINTENANCE"
)
Spray continues after trigger
valve is closed
Dirt or particles in trigger valve
Disassemble and clean trigger valve
(see
"TRIGGER VALVE
MAINTENANCE"
)
Spring in trigger valve weakened
Insert spring spacer
(see
"TRGGER
VALVE MAINTENANCE"
)
Seal in trigger valve damaged or
worn
Replace seal
(see
"TRIGGER VALVE
MAINTENANCE"
)