Landa SLT6-30224E Operator's Manual page 18

PROBLEM
PUMP NOISY
PRESENCE OF
WATER IN OIL
WATER DRIPPING
FROM UNDER
PUMP
OIL DRIPPING
EXCESSIVE
VIBRATION IN
DELIVERY LINE
DETERGENT NOT
DRAWING
BURNER MOTOR
WILL NOT RUN
RELIEF VALVE/
RUPTURE DISK
LEAKS WATER
18
TROUBLESHOOTING
POSSIBLE CAUSE
Air in suction line
Broken or weak inlet or discharge
valve springs
Excessive matter in valves
Worn bearings
Oil seal worn
High humidity in air
Piston packing worn
O-Ring plunger retainer worn
Cracked piston
Pump protector
Oil seal worn
Irregular functioning of the valves
Air leak
Restrictor in float tank is missing
Filter screen on detergent suction
hose plugged
Dried up detergent plugging
metering valve
High viscosity of detergent
Hole in detergent line(s)
Low detergent level
Fuel pump seized
Burner fan loose or misaligned
Defective control switch
Loose wire
Defective burner motor
Excessive pressure, thermal
expansion
Landa SLT/SLX • Gas 8.914-002.0 • Rev. 4/13
SOLUTION
Check water supply and connections on suction
line.
Check and replace if necessary.
Check and clean if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check and change oil twice as often.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Lower water supply pressure. Do not run with
spray gun closed longer than 5 minutes.
Check and replace if necessary.
Check and replace if necessary.
Tighten all clamps. Check detergent lines for
holes.
Replace restrictor. Check for proper orifice in
restrictor.
Clean or replace.
Disassemble and clean thoroughly.
Dilute detergent to specifications.
Repair hole.
Add detergent, if needed.
Replace fuel pump.
Position correctly, tighten set screw.
Replace switch.
Check and replace or tighten wiring.
Replace motor.
Replace or repair