technical documentation manuals 308013008

24
| Troubleshooting/maintenance/repair
Note:
For all other damage/defects, please contact Systemair. Defective safety-relevant fans (for Ex and smoke
extraction applications) must be replaced completely.
11.2 Maintenance
Warranty claims can only be made if maintenance work is carried out correctly and written evidence thereof is
provided.
We recommend regular maintenance intervals to ensure continuous fan operation. These maintenance intervals are
specified in the “Activities” table below. In addition, the operator must carry out follow-up activities such as cleaning,
replacing defective components or other corrective measures. For traceability reasons, a maintenance plan must be
created which documents the work carried out. This must be created by the operator. If the operating conditions are
"extreme", the maintenance intervals must be reduced so that maintenance is carried out more frequently. Examples
of extreme operating conditions:
• Fan unit in rare use (less than once a month)
• Fan used for emergency operation
• Durable ambient temperature > 40 ºC or < -10 ºC, or temperature fluctuations > 20 K
The following check list provides points of reference for the tasks to be carried out.
Table 12 Activities
Normal operating
conditions
Extreme operating
conditions
Activity
Every six
months
Annually Quarterly
Every six
months
Check the fan and its components for visible damage,
corrosion and contamination.
X X
Check the impeller for damage and imbalance.
X X
Clean the fan/ventilation system (see 12 Cleaning, page
26).
X X
Check the screwed connections for damages/defects and
check that they are firmly seated.
X
See normal operating
conditions
Check the fan intake is free from contamination.
X X
Check that the fan and its components are being used
correctly.
X
See normal operating
conditions
Check the current consumption and compare this with the
rated data.
X X
Check the vibration dampers (if used) are working
correctly and check for visible damage and corrosion.
X
See normal operating
conditions
Check the electrical and mechanical protective equipment
is working correctly.
X
See normal operating
conditions
Check the fan’s rating plate is legible.
X X
Check the connection clamps and screwed cable
connections for damage/defects, and check that they are
firmly seated.
X
See normal operating
conditions
Check the flexible connectors for damage.
X
See normal operating
conditions
Check the function of the standstill heating (if used)
X
See normal operating
conditions
Check the lubrication device (if available). See the manual
of the motor.
X X
Table 13 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
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