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| Cleaning
Pitch angle setting and the safety of the blades Make sure that the blades are tight. If any changes are
necessary, contact Systemair
Tightening torques of the fan fittings on the base/
foundation
Make sure that the tightening torques are as tight as possible
If in doubt about the suitable tightening torques, contact
Systemair
Fittings of the motor, fan and ancillary equipment Make sure that all fittings are present, correct, and as tight as
possible
If in doubt about the suitable tightening torques, contact
Systemair.
Condition of the anti-vibration system Check for unusual movement and screw the connection tight
if necessary
Motor voltage and motor current Make sure that the measured data matches with the data on
the name plate
Optional lubrication device: regreasing See manual of the motor
Line connections of the fan accessories
Check all line connections (including grounding) for safety
and condition
11.3.6 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
11.3.7 After 20,000 hours of operation or 5 years of normal operation
♦ Replace the shaft sealing rings and shaft bearings.
11.3.8 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).
11.4 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.
11.5 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.
12 Cleaning
12.1 Safety information
♦ Cleaning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 2.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
♦ Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 2!
12.2 Preconditions
♦ The power supply has been switched off (all-pole circuit breaker).
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