Manual

12
09740-09.2013-DGbFITr
D
GB
F
I
TR
4| Compressor assembly
4.3 V-belt drive
4.4 Main bearing load
4.5 Electromagnetic clutch assembly
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proleandthebeltlength.
Thefollowingdescriptionappliesforanelectromagneticclutchsecuredtoashaft.
Toabsorbthemagneticeldoftheelectromagneticclutch,theslidingringlidhas
asnugtØ38h8(seeFig.10).
Toconnectthemagneticeld,removethemarkedAllenheadscrewsoftheslidingringlid
(seeFig.11).
Slidethemagneticeldtoasnug-tandfastenusingthethreeM5x18cheesehead
screwsprovided(Fig.11).Screwtorque=9Nm.
Furtherassemblyoftheelectromagneticclutchaccordingtotheclutchmanufacturer.
Fig.10
Slidingringlid
Magneticeld
Fig.11
Topreventthebeltdriveoverloadingthecompressormainbearing,
ensurethat:
Theengagementforceappliedbythebelttension(seeFig.9)
mustnotexceedF
maxper.
=600N.
Iftheforceengagementpointshiftstotheright(seeFig.9,
smallpoint),theforceF
maxper.
reducesasperthefollowing
formula:
F
maxper.
=
30kNmm
(50mm+L
1
[mm])
F
max
=
600 N
M
bmax
=
30kNmm
L
1
(mm)
Fig.9
Snugt