Troubleshooting - Landa ZF Serie Manual Del Operador

ZF SERIES PRESSURE WASHER
PROBLEM POSSIBLE CAUSE
PUMP RUNNING Pump sucking air
NORMALLY BUT
Valves worn or dirty
PRESSURE LOW
ON INSTALLATION
Unloader valve seat faulty or worn
Nozzle incorrect or worn
Worn piston packing
Multireg nozzle in low pressure position
Valves worn, dirty or stuck
FLUCTUATING
PRESSURE
Pump sucking air
Worn piston packing
PRESSURE DROPS Nozzle worn
AFTER PERIOD OF
Valves worn, dirty or stuck
NORMAL USE
Unloader valve seat worn or dirty
Worn piston package
Pump sucking air
PUMP NOISY
Valves dirty or worn
Worn bearings
Water too hot
PRESENCE OF High humidity in air
WATER IN OIL
Piston packing and oil seal worn
WATER DRIPPING
Piston packing worn
FROM UNDER
O-rings of piston guide or retainer worn
PUMP
Oil seal worn
OIL DRIPPING
Plug not well connected or there is a
MOTOR DOES NOT
lack of power supply
START WHEN
SWITCHED ON
MOTOR HUMS BUT Main voltage is insufficient, lower than
the minimum required
DOES NOT RUN
WHEN MACHINE
Pump is stuck or frozen
SWITCHED ON
Incorrect extension cord
MOTOR STOPS Tripped thermal overload due to
overheating

TROUBLESHOOTING

SOLUTION
Check that hoses and fittings are air tight.
Check, clean or replace.
Check and replace.
Check and replace.
Check and replace.
Slide out to select high pressure.
Check, clean or replace.
Check that hoses and fittings are air tight.
Check and replace.
Check and replace.
Check, clean or replace.
Check, clean or replace.
Check and replace.
Check that hoses and fittings are air tight.
Check, clean or replace.
Check and replace if necessary.
Reduce temperature below 140°.
Check and change oil twice as often.
Check and replace.
Check and replace.
Check and replace.
Check and replace.
Check plug, cable and switch.
Check that the main power supply is adequate.
Check by turning the motor manually as described in
instructions (page 8).
Replace with correct extension cord.
Check that main volatage corresponds to the specifications
for the ZF2-10021D. Wait a few minutes then turn on
machine again by resetting the GFCI on the cord.
LANDA ZF • REV. 9/02
OPERATOR'S MANUAL 13