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How to service fans and fan motors,
Procedure,
continued
Procedure, 5000
operation
')
hours/annually
12
Step
3
Check that the pulleys are placed correctly and are completely parallel
4
Check that the fixing of the belt drive has been correctly adjusted.
Check the belt tightening by controlling that the deflection (F) matches the
specifications below (mm). The deflection strength of each belt depends on
the belt profile type used and the centre distance.
Dantherm Air Handling recommend the use of special-purpose tools for the
measuring of the belt tightening in order to ensure the control of the values
of the table below
Belt Profile
(type)
SPA-XPA
Do as follows to service the fan ball bearings:
Step
1
Check the wear and tear of the vibration-damping rubber bushings
which the fans' ball bearings are fitted
*)
only fans that have rubber bushings
2
Control the vibration dampers and the flexible connections
continued
Action
Centre
Deflection
Distance (mm)
Strength (Kg)
500-600
600-800
Action
Deflection,
F (mm)
2,7
11
13
*)
into
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