V-Belt Drive; Main Bearing Load; Electromagnetic Clutch Assembly - GEA FK50/460 N Assembly Instructions Manual

4| Compressor assembly

4.3 V-belt drive

During operation with capacity controllers (Accessories, Chap. 7), the changing load can cause
increased running noises and belt drive vibrations.

4.4 Main bearing load

To prevent the belt drive overloading the compressor main bearing,
ensure that:
The engagement force applied by the belt tension (centre of
shaft taper, see Fig. 10) must not exceed F
If the force engagement point shifts to the right (see Fig.10,
small point), the force F
formula:
D
GB
F =
max per.
F
I
TR

4.5 Electromagnetic clutch assembly

CN The following description applies for an electromagnetic clutch secured to a shaft.
To absorb the magnetic field of the electromagnetic clutch, the front bearing flange has
a snug fit 148 h8 (see Fig. 11).
To connect the magnetic field, loosen the 4 cheese head screws M8 on the bearing flange
(see Fig. 11).
Slide the magnetic field to a snug fit and re-attach using the four cheese head screws M8
(Fig. 12). Screw torque = 34 Nm.
Further assembly of the electromagnetic clutch according to the clutch manufacturer.
Fig. 11
12
ATTENTION! Inappropriately designed belt drives, especially belt knocking or
excessive tensioning forces can cause compressor damage!
Make sure that the drive belt is designed correctly, e.g. by using
tensioners and selecting the belt profile and the belt length.
reduces as per the following
max per.
245 kNmm
(90 mm + L [mm])
1
148 h8
= 2750 N.
max per.
Bearing flange, front
Magnetic field
F
max =
M
bmax =
Fig. 10
Fig. 12
2750 N
245kNmm