Inspection Interval / Function Checking - HLU HF R 48 R Series Operating Manual

Retension of V-belt
Loosen both screws on the motor flange
(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, first tighten
the screw with the clamping angle (1), then tighten
the screw directly at the flange (2).
Then check the belt tension again and if necessa-
ry repeat the process until the required tension is
reached (if sufficient force can not be applied, use
torque-increasing measures [leverage]).

8.4 Inspection interval / Function checking

Superordinate facility for connecting the
supply voltage
Settings of the on-site protective devices
Fan motor function checking
Bearing function checking
Check belt tension and correct if necessary
Check the impeller for damage
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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 deflexion in mm
(1)
[F]
Interval with single-shift operation
d w m
(2)
½ y 1 y MO
x
x
x
x
x
x
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06.2019