Wacker Neuson PS2 1503, Operator'S Manual

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Maintenance PS (3-Phase) Series
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5.4 Troubleshooting
Before ordering repairs, carefully read through this manual, then
repeat the inspection. If the problem remains, contact your nearest
dealer or Wacker representative.
ALWAYS turn off the power before inspecting the pump. Failure to
observe this precaution can result in serious accident.
Problem / Symptom Reason / Remedy
Pump fails to start. • No power is supplied (i.e. power outage). Contact
the electric power company or an electrical repair
shop.
• Open circuit or poor connection of the cable assem-
bly. Check if there is an open circuit in the cable
assembly or wiring.
• Impeller is obstructed. Inspect the pump and remove
the obstruction.
Pump starts but stops imme-
diately, causing the motor pro-
tector to actuate.
• Impeller is obstructed. Inspect the pump and remove
the obstruction.
• Voltage drop. Correct the voltage to the rated volt-
age, or use an extension cable that meets the stan-
dard.
• A 50 Hz model is operated at 60 Hz. Check the
nameplate and replace the pump or the impeller.
• The strainer is obstructed, and the pump was oper-
ated dry for long periods. Remove the obstruction.
• Motor abnormal. Repair the motor or replace with a
new motor.
• The pump is picking up too much sediment. Place a
concrete block under the pump to prevent the pump
from picking up sediment.
WARNING