Emergency; Dismantling / Disposal - HLU HF R 48 R Series Operating Manual

Trouble
Normal abrasion
Belt broken
V-belt tension too high
or damaged
V-belt does not align
Wrong pre-tension
V-belts slip
Backlash due to decreasing V-belt
through
pre-tension
Motor winding defective
Sliding Impeller unbalance
noises
Foreign body between impeller and
housing
Sudden pow- Inlet or outlet pipe untight
Connecting collar defective
er decrease

10. Emergency

In case of emergency, switch off the main switch or withdraw the power supply connector.

11. Dismantling / Disposal

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Operating manual
Centrifugal fans
HF R | RV | MRV
Possible cause
Dismounting
Dismounting may be done only by qualified personnel.
Before starting dismounting work, make sure that the switch-off proce-
dures are followed.
Disposal
The fan is made mainly of steel and plastics (except the electrical
equipment) and must be discarded in compliance with the applicable
local environmental regulations.
For discarding the cleaning agents, follow the local regulations and the
information given in the manufacturer safety data sheets.
Contaminated cleaning tools (brushes, clothes, etc.) must be discarded
in compliance with the manufacturer specifications as well.
Depending on the fan application, the housing and the impeller must be
considered as special waste and discarded accordingly.
Injection moulded or sintered housings are provided with recycling
signs indicating which type of plastic material was used.
Remedial action
Find reason, change V-belts
Reduce V-belt pre-tension
Check alignment
Check belt tension and correct if
necessary
Check and re-adjust the V-belt
Consult manufacturer
Balancing required, consult manufac-
turer
Remove the foreign body
Check the pipes
Replace the collar
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06.2019