IMO DVV

Maintenance/troubleshooting
DVV 16.08.2021 13
WARNING
Hazard from electrical voltage and flying parts!
Errors occurring can lead to personal and/or property damage!
Switch the fan immediately off as planned:
 In cases of a non-typical noise from bearings, vibrations, pressure pulsation.
 In case of overcurrent, overvoltage or temperature (nameplate). Then try to find the reason - see
chapter 10.
10 Maintenance/troubleshooting
WARNING
Hazard from electrical voltage!
 Trouble setting and service only by a trained electrician or trained and instructed qualified personnel!
 Observe rules for safe work at maintenance/troubleshooting, cleaning and service!
 Observe 5 safety rules for the electrical expert!
- disconnect from the power supply (all-pole),
- prevent switching on again,
- test absence of voltage,
- earthing and short-circuiting,
- protect adjacent live parts by covers and barriers and fit a suitable warning notice.
DANGER
Hazard from injurie from rotating parts, if not covered with protective grid!
The outlet protective grid is serially provided. If needed to remove protective grids temporarily, assure:
 Electrical circuit must be interrupted and secured against restarting.
 Impeller must stand still.
 Immediately after finished work fix protective grids.
CAUTION
Danger from hot surfaces!
 During maintenance/troubleshooting and cleaning wear protective working gloves to prevent contact
with hot motor!