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SDHW SERIES PRESSURE WASHER
OPERATOR’S MANUAL
LANDA SDHW
•
REV.12/02
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW
ON INSTALLATION
Pump sucking air
Check water supply and possibility of air
seepage.
Valves sticking
Check and clean or replace if
necessary.
Unloader valve seat faulty
Check and replace if necessary.
Nozzle incorrectly sized
Check and replace if necessary (See
serial plate for proper size).
Worn piston packing
Check and replace if necessary.
FLUCTUATING
PRESSURE
Valves worn
Check and replace if necessary.
Blockage in valve
Check and replace if necessary.
Pump sucking air
Check water supply and air seepage at
joints in suction line.
Worn piston packing
Check and replace if necessary.
PUMP NOISY
Air in suction line
Check water supply and connections on
suction line.
Broken or weak inlet or discharge
valve springs
Check and replace if necessary.
Excessive matter in valves
Check and clean if necessary.
Worn bearings
Check and replace if necessary.
PRESENCE OF
WATER IN OIL
Oil seal worn
Check and replace if necessary.
High humidity in air
Check and change oil twice as often.
WATER DRIPPING
FROM UNDER PUMP
Piston packing worn
Check and replace if necessary.
O-Ring plunger retainer worn
Check and replace if necessary.
Cracked piston
Check and replace if necessary.
Pump protector
Lower water supply pressure. Do not run
with spray gun closed longer than 5
minutes.
OIL DRIPPING
Oil seal worn
Check and replace if necessary.
EXCESSIVE
VIBRATION IN
DELIVERY LINE
Irregular functioning of the valves
Check and replace if necessary.
DETERGENT NOT
DRAWING
Air leak
Tighten all clamps. Check detergent
lines for holes.
Restrictor in float tank is missing
Replace restrictor. Check for proper
orifice in restrictor. See parts breakdown
for proper restrictor.
Filter screen on detergent suction
hose plugged
Clean or replace.
Dried up detergent plugging
metering valve
Disassemble and clean thoroughly.
High viscosity of detergent
Dilute detergent to specifications.
Hole in detergent line(s)
Repair hole.
Low detergent level
Add detergent if needed.
RELIEF VALVE LEAKS
WATER
Relief valve defective
Replace or repair.
(For parts and information call your Landa Dealer)
Summary of Contents for SDHW5-3000
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