Landa PE - Page 11

LANDA PE • 8.913-998.0 • Rev. 03/12
PRESSURE WASHER TROUBLESHOOTING GUIDE
12
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
MOTOR WILL
NOT START
Usually caused by line trouble, such
as single phasing at the starter
Check source of power. Check overloads,
fuses, controls, etc.
MOTOR
OVERHEATING
Overload. Compare actual amps
(measured) with nameplate rating
Locate and remove source of excessive fric-
tion in motor or load.
Reduce load or replace with motor of greater
capacity.
Single phasing Check current at all phases (should be ap-
proximately equal) to isolate and correct
problem.
Improper ventilation Check external cooling fan to be sure air is
moving properly across cooling fi ns.
Excessive dirt build-up on motor. Clean motor.
Unbalanced voltage Check voltage at all phases (should be ap-
proximately equal) to isolate and correct the
problem.
Over voltage or under voltage Check input voltage at each phase to motor.
Open stator winding Check stator resistance at all three phases for
balance.
Improper connections Inspect all electrical connections for proper
termination, clearance, mechanical strength
and electrical continuity. Refer to wiring dia-
grams.
BEARING
OVERHEATING
Misalignment Check and align motor and driven equipment.
Excessive belt tension Reduce belt tension to proper point for load.
Excessive grease in bearing Remove grease until cavity is approximately
3/4 fi lled.
Insuffi cient grease in bearing Add grease until cavity is approximately 3/4
fi lled.
Dirt in bearing Clean bearing cavity and bearing. Repack
with correct grease until cavity is approximate-
ly 3/4 fi lled.
GROWLING OR
WHINING
Bad bearing Replace bearing. Clean all grease from cavity
and new bearing. Repack with correct grease
until cavity is approximately 3/4 fi lled.