Service Manual Landa 2HOT • 9.808-354.0
PRESSURE W
ASHER T
roubleshooting Guide
8
PROBLEM
POSSIBLE CAUSE
SOLUTION
PUMP NOISY
Broken or weak inlet or discharge
valve springs
Check and clean if necessary.
Excessive temperature of liquid
Reduce to below 140° F (60° C).
Foreign 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.
Piston packing worn
Check and replace if necessary.
WATER
DRIPPING
FROM UNDER
PUMP
Pump protector
Reduce inlet water pressure. Do not close
trigger on spray gun for longer than 1-2
minutes.
Piston packing worn
Check and replace if necessary.
O.R. plunger retainer worn
Check and replace if necessary.
Cracked ceramics
Check and replace if necessary.
OIL DRIPPINGS
Oil seal worn
Check and replace if necessary.
Cracked manifold
Check and replace if necessary.
TROUBLESHOOTING