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7 Troubleshooting
Problem
Fault
The motor will not
Electrical supply not connec-
start
ted.
Power switch or cable defect.
Radio noise suppression card
defect.
Motor protection activated.
None or bad suc-
The switch is not completely
tion capacity.
turned on.
Clogged suction hose or inlet.
Clogged filter.
Leaking suction hose.
Leaking gaskets.
Discharge valve open.
Dust in the exhaust
Filter missing, defect or
air.
wrongly installed.
Filter defect
Abnormal noise
Leaking gaskets.
level.
Sound absorbing material de-
fect.
Motor protection
Power outage.
activated
Restricted or no airflow.
Motors rotating in the wrong
direction.
Ball bearing temperature
sensor activated.
Ball bearing tem-
Ball bearing temperature too
perature sensor ac-
high.
tivated.
S - Vacuum Cleaners
Solution
Connect the electrical supply.
Contact the distributor.
Contact the distributor.
See "Motor protection activated".
Turn the switch on.
Disconnect the suction hose. Turn and suck in the op-
posite direction. If still clogged, unclog it with a rod.
See
Chapter 6
Replace the suction hose.
Remove and replace damaged neoprene gaskets.
Use suitable two-component glue.
Close valve.
Check the filter and replace it if necessary.
Change filter.
Remove and replace damaged neoprene gaskets.
Use suitable two-component glue.
Dismantle the silencer hood and remove dirt. Replace
damaged silencing material, if necessary.
Reset the motor protection. See
motor
protection.
Prevent overheating by ensuring that a flow of air
passes the fan. Make sure hoses, and the fan's inlet
and outlet are not blocked.
Start the fan briefly, check the direction of rotation.
Impeller rotation must match the arrow on the fan
housing. If it does not, switch the phases L1 and L3
for three-phase operation.
See "Ball bearing temperature sensor activated".
Listen for abnormal noise from the fan. If there is ab-
normal noise, contact the nearest authorized distrib-
utor or Nederman service for technical advice.
Maintenance.
Section 5.2 Reset
EN
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