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AIR BOOSTER 2
© STULZ SpA . – all rights reserved EN/10.2018/IT30I
9.2. Preventive maintenance schedule
ATTENTION
Very little routine maintenance is necessary to keep the unit in reliable operating order and protect
its moving parts. This maintenance, however, must be performed at the prescribed maintenance
intervals. Failure to perform maintenance, in addition to affecting the unit durability and operation,
invalidates the warranty.
If the unit works in particularly dirty environment or if experience shows that a more frequent
maintenance is needed, this must be made as necessary.
Interval
Operation
Every year
Check that fan motor and other components do not show abnormal vibrations or show any signs of overheating.
Fan
The bearings of the fan are lifetime lubricated and do not need maintenance. Check the operation
current. An increased operation current indicates either a higher air resistance by a clogged pre-
filter or a winding short circuit in the fan motor.
Replacement of components
We recommend to replace the fans every 40, 000 operating hours (L10 life calculated at 40°C
working temperature).
9.2.1. General cleaning
The metal casing of the unit can be cleaned using a liquid detergent as long as this liquid is
compatible with: PVC, polyethylene, silicone and polyester coating. Be careful not to wet the
electrical connections inside the unit.
ATTENTION
Use of an unsuitable detergent might cause damage to the unit. Do not use either acid or caustic
substances or solvents to clean any part of the unit.
Remove dust with a vacuum cleaner. Clean the internal parts with a liquid detergent and compressed
air not greater than 4 bar, with the unit suitably earthed.
