Installation and operating instructions

14
| Cleaning
Table 7 Activities for fans used for emergency operation.
Check (if present)
Activity Every six months
Operational readiness of the fan unit
Allow the fan to run for 1 hour
X
Operational readiness of the
emergency system
Allow the "emergency" system to run for
15 minutes
X
Function of the “emergency” control
Test whether the “emergency” control
effectively bridges all the other controls
and switches
X
Spare parts
Use original spare parts from Systemair only.
When ordering spare parts, please specify the serial number of the fan. This can be found on the name plate.
Variable-speed fans
Important
The fan may be destroyed due to unpermitted frequencies.
Pay particular attention to damage from vibrations.
After commissioning, start with shorter maintenance intervals.
If no damage occurs, adjust the maintenance intervals up to the those stated in the operating
instructions.
Responsibility for gradual adaptation is with the system operator.
Overhaul/further maintenance
Pay attention to the safety references and preconditions as in normal maintenance. For the following activities and
functions, contact Systemair:
complete overhaul of motors
replacement of bearings
re-winding of motors
monitoring of condition
vibration analysis
After 20,000 hours of operation or 5 years of normal operation
Check the condition of the shaft sealing rings and shaft bearings and take action if necessary.
After 30,000 to 40,000 hours of operation
The bearings must be replaced at the end of the grease service life (about 30,000 to 40,000 h in standard
applications).
Work before switching on again
Attach all the safety and protective devices tightly and securely.
Remove all the devices with which you have blocked the rotor.
Remove all assembly residues and foreign bodies from the area around the fan unit.
12 Cleaning
Safety information
Observe 2 Important safety information, page 1
Procedure
Keeping the fan clean extends its service life.
Do not use steel brushes or sharp-edged objects.
Do not use a high-pressure cleaner (steam jet cleaner) under any circumstances.
Do not bend the fan blades when cleaning.
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