Troubleshooting - Landa PG4-2000 Operator's Manual

PROBLEM
LOW OPERATING
PRESSURE
FLUCTUATING
PRESSURE
PRESSURE LOW
AFTER PERIOD OF
NORMAL USE
ENGINE WILL NOT
START OR STOPS
WHILE OPERATING
ENGINE IS
OVERLOADED
WATER OR OIL
LEAKING FROM
BOTTOM OF PUMP
PRESSURE
INCREASES
WHEN SPRAY
GUN IS CLOSED
12

TROUBLESHOOTING

POSSIBLE CAUSE
Insuffi cient water supply. Closed
faucet
Old, worn or incorrect spray nozzle
Plumbing or hose leak
Faulty or mis-adjusted unloader
valve
Worn packing in pump
Machine has been stored in freez-
ing temperatures
Slow engine RPM
Worn pump valves
Dirt in pump valves
Pump sucking air
Gasoline Engine Altitude
Nozzle worn
Unloader valve worn
Low oil shutdown
Nozzle partially blocked
Excessive pressure from high
engine RPM
A small amount of leaking is normal If excessive leaking occurs, call local dealer.
Unloader valve not operating prop-
erly
8.913-910.0 • LANDA PG • Rev. 11/11B
SOLUTION
Use larger garden hose; clean inlet water
screen. Open faucet.
Match nozzle number to machine and/or re-
place with new nozzle.
Check plumbing system for leaks. Re-tape
leaks with tefl on tape.
Adjust unloader for proper pressure. Install
repair kit when needed. Note: Tampering with
the factory setting may cause personal injury
and/or property damage, and will void the
manufacturer's warranty.
Call local dealer.
Thaw out machine completely, including hose,
spray gun and wand.
Call local dealer.
Call local dealer.
Call local dealer.
Check all pump lines and connections.
The gasoline engine is preset for operation at
altitudes below 1000 feet above sea level. If
operated at higher altitudes, it may be neces-
sary to install a hich altitude main jet in the
carburator. Contact your local authorized
engine sales and service center for details
Replace nozzle.
Replace unloader valve.
Fill engine with oil.
Clean nozzle.
Adjust engine throttle to lower RPM.
Call local dealer.