HLU HF R 48 R Series - Inspection Interval; Function Checking

33
www.hlu.eu
06.2019
Operating manual
Centrifugal fans
HF R | RV | MRV
Designation
e Centre distance
ß Angle of belt contact
D Diameter of big pulley
d Diameter of little pulley
F Test force in N
L Free belt length
Ea Required deexion in mm
Retension of V-belt
Loosen both screws on the motor ange
(A bearing). Then pull the motor at the terminal box at
a 45 ° angle downwards [F] so that the belt is tensio-
ned. Tighten the screws slightly, then pull the motor
downwards at an angle so that the belt tension rises
again. While the tension is maintained, rst tighten
the screw with the clamping angle (1), then tighten
the screw directly at the ange (2).
Then check the belt tension again and if necessa-
ry repeat the process until the required tension is
reached (if su󰀩cient force can not be applied, use
torque-increasing measures [leverage]).
(1)
(2)
[F]
8.4 Inspection interval / Function checking
Interval with single-shift operation
d w m ½ y 1 y MO
Superordinate facility for connecting the
supply voltage
x
Settings of the on-site protective devices x
Fan motor function checking x
Bearing function checking x
Check belt tension and correct if necessary x
Check the impeller for damage x