FCM 300 Series
MG.03.B6.2G - VLT is a registered Danfoss trademark
Installation
When the application calls for direct coupling,
the shafts must be correctly aligned in all three
planes. Bad alignment can be a major source of
noise and vibration.
Allowance must be made for shaft endfloat and
thermal expansion in both axial and vertical planes.
It is preferable to use flexible drive couplings.
■ Alignment
Maximum permissible external axial and radial loads in N (1N = 0.225 lbf) standard ball bearings
Horizontal shaft Vertical shaft
Load towards Load away Shaft up Shaft down
Frame motor from motor load load load load
size Poles Up Down Up Down Max. radial
2
80 2 275 441 481 245 294 432 638
4 373 549 569 343 392 520 785
90 2 412 638 598 294 373 520 824
4 540 765 716 402 471 628 903
100 2 853 853 932 932 814 814 1207
4 1010 1010 1118 1118 961 961 1393
112 2 853 853 932 932 814 814 1207
4 1010 1010 1118 1118 961 961 1393
132S 2 1059 1403 1570 952 1216 1305 1785
4 1265 1609 1825 1138 1472 1481 1972
132M 4 1256 1609 1854 1109 1501 1462 2040
1
All figures are based on Lna bearing life of 20,000 hours.
Lna = adjusted L10 life rating taking account of:-Reliability -Material improvements -Lubrication conditions
2
Max. permissible radial load at end of shaft (horizontal mounting).
■ Mechanical Installation of the FCM 300
Do not force fittings couplings, pulleys,
etc. onto the FCM 300 motor shaft, as
this will cause bearing damage,
increasing bearing noise and
significantly reducing bearing life.
To avoid overheating, the ambient temperature
should not exceed 104
o
F/40
o
C. The average 24-
hour temperature is not to exceed 95
o
F/35
o
C. For
more information, see "Derating".
Before installation, check unit for fan cover damage,
foot/mounting damage, shaft damage and loose
fasteners. Check nameplate data on motor.
The FCM 300 unit
should not be mounted such that
the inverter portion of the unit (regardless of feet
position) is upside down.
Mounting Clearances
FCM 300 units must be installed with adequate
access for routine maintenance.
Minimum clearance = 29.5 in (0.75 m) on all sides
Minimum clearance at fan inlet = 2 in. (50 mm)
Where several units are installed in close proximity,
care must be taken to ensure warm air from units is
not recirculated.
FCM 300 units must be mounted on rigid, level
surfaces.
Fitting Pinions, Pulleys and Coupling
These should be sized to fit FCM 300 standard
dimensions.
■
■
6-2
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