Troubleshooting - Lesco Premium Serie Manual De Uso Y Cuidado

TROUBLE
Sprayer starts to spray when
pumping or sprayer will not
stop spraying when shut-off
lever is released.
Sprayer leaks at pump or spray-
er does not build pressure.
Sprayer material overflows
through pump barrel or pump
handle rises when handle
is unlocked.
Hose leaks at tank or shut-off.
Sprayer is difficult to pump.
Sprayer tank leaks.
Nozzle drips when shut-off
lever is released.
Nozzle tip leaks, poor spray
pattern, partial spray or com-
plete stoppage.

TROUBLESHOOTING

LOOK FOR
Shut-off lock is engaged.
1. Dirt or debris on pump gasket
or closure.
2. Chipped, torn, swollen, or
defective pump gasket
3. Check valve at bottom of pump
assembly.
4. Worn or damaged o-ring on
piston.
1. Dirt or debris under check
valve on pump.
2. Chipped, torn, or swollen
pump check valve.
1. Loose hose.
2. Cracked, swollen, or faulty hose.
1. Damaged piston o-ring.
2. Piston o-ring is dry.
Evidence of spray material
escaping from the tank.
1. Dirt or debris in shut-off valve.
2. Damaged o-ring or seal in
shut-off (Kit #7).
1. Flat seal is missing or
damaged.
2. Spray extension or nozzle
clogged.
REMEDY
Squeeze shut-off lever and rotate the
lock towards the nozzle as described in
Spraying and Locking section.
1. Clean dirt or debris from gasket
or closure.
2. Remove old gasket and replace with
new as described in Pump
Disassembly & Reassembly section.
3. Replace if missing or damaged as
described in Pump Disassembly &
Reassembly section.
4. Replace if worn or damaged as
described in Pump Disassembly &
Reassembly section.
1. Clean check valve and valve sealing
surface on pump.
2. Replace check valve as
described in Pump Disassembly &
Reassembly section.
1. Tighten hose nut.
2. Replace shut-off assembly.
1. Replace piston o-ring as described in
Pump Disassembly & Reassembly
section.
2. Lubricate piston o-ring as described
in Pump Disassembly & Reassembly
section.
Replace entire sprayer.
1. Clean shut-off as described in
Shut-off Maintenance section.
2. Service shut-off seals as described in
Maintenance service Kit #7.
1. Replace flat seal at extension tip
(Kit #7).
2. Remove nozzle and clean as
described in Nozzle Maintenance
section.
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