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Nederman Electric powered Serie Manual De Instrucciones página 8

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Service
WARNING! Risk of personal injury.
Completely disconnect the vacuum cleaner from all power sources before any type of service.
External control, unit off:
Control and replace cables and plugs if damaged.
Replace leaking suction hoses and couplings
Internal control, unit off:
Check regularly that the rubber pad on the wear plate in the silo is not damaged or frayed.
Internal control, unit on:
Replace worn out and leaking gaskets.
Repair or replace worn out filters to avoid wear and tear of the turbine rotor or blow through of dust.
Replace torn or full dust bag.
Repair or replace reusable dust bag. Clean the dust bag if it becomes dirty.
Control with top cover attached, unit on:
Start the motors in sequence using the main switch. If the main switch does not function properly or is
damaged, replace it.
If specified vacuum is not reached, check all gaskets and connections. Execute the vacuum test with suction
inlet(s) closed.
If the noise level is higher than the maximum specified, dismantle the silencer hood and check the silencing
material. Replace it if it is damaged.
Control with top cover removed, unit on:
Start the vacuum with the top cover removed.
Control that the motors are running clockwise as seen from above.
WARNING! Risk of Personal injury.
Do not touch the motor with any tool during this operation.
Control the thermal function by clogging the cooling air inlets with sheets of paper. The vacuum should
soon stop without getting overheated (about 75˚C/167 ˚F).
Control with top and secondary covers removed, unit off:
Control that all cable connections are properly secured and screws tightened.
Control that the carbon brushes are not worn out. Replace them if necessary.
Control wear of commutator. Replace motor if commutator is grooved.
Turn motor. If there is resistance in the bearings or turbo fan, replace the motor.
If any wiring in the circuit board is burned, replace the card.

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