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NT 208-A00 11 13 Enterprise e
2. INSTALLATION (continued)
2.3 Drive shaft - See Figure 5
Figure 5
1.
Square slip joints are NOT recommended.
2.
Drive shaft length should be as short as possible and
the drive shaft MUST be balanced.
3.
The drive shaft and compressor shaft MUST be paral-
lel within 1° and have a maximum of 10°compound
misalignment. See Table :
4.
Universal joints MUST be in phase, with the drive
shaft slip joint at mid-position. Use an even number of
universal joints.
5.
If the drive shaft is fitted to a PTO, a torque limiting
device MUST be fitted to prevent damage due to pos-
sible compressor failure/seizure.
2.4 Hydraulic drive
1.
If the compressor is to be driven hydraulically,
MOUVEX can supply a standard Drive Kit for direct
mounting of the hydraulic motor or hydraulic pump.
MOUVEX can also supply the hydraulic motor ; See
figure 6.
Figure 6
2.
Ensure the motor is installed and piped to give the
correct rotation. If required, a drain line, returning to
hydraulic reservoir tank, should also be installed.
3.
If the couplings are aligned correctly, the outer plastic
sleeve should have 0.19 inch (5 mm) axial play
through 360° rotation. This can be checked by remo-
ving the inspection plate ; See figure 6.
THE DISCHARGE PIPE OF THE COMPRESSOR (THE
TEMPERATURE CAN BE OVER 200°C) CAN NOT GO
CLOSE TO THE COUPLING SUCTION PORTS. IF NOT
POSSIBLE TO AVOID IT, INSTALL A DEFLECTOR TO
PROTECT THE COUPLING FROM SUCKING HOT AIR.
Base mounted direct drive
Flexible coupling
When base mounted and coupled to a drive (i.e.: electric
motor), use a flexible coupling.
1.
Coupling angular and parallel alignment MUST be
maintained in accordance with coupling manufactu-
rer’s instructions ; See figure 7.
Figure 7- Coupling alignment
NOTICE :
USE OF EXCESSIVE FORCE WHEN FITTING THE
COUPLING FLANGE TO THE COMPRESSOR
SHAFT CAN CAUSE BEARING DAMAGE AND
INTERNAL COMPRESSOR DAMAGE.
2.
When an electric motor is utilized as the driver, it MUST
be fitted with adequately sized overload protectors to
safeguard it against compressor seizure.
WARNING
Do not operate
without guard
in place.
DRIVES SHAFTS MUST BE GUARDED IF
EXPOSED. OPERATION WITHOUT
GUARDS CAN CAUSE SERIOUS PERSO-
NAL INJURY, MAJOR PROPERTY DAMAGE
OR DEATH.
A
Universal joint angle
0,017
1°
VERY GOOD
0,035
2°
0,052
3°
0,070
4°
0,087
5°
0,105
6°
GOOD
0,125
7°
0,141
8°
0,158
9°
0,176
10°
0,194
11°
LIMIT
VALUES
0,213
12°
0,231
13°
0,249
14°
0,268
15°
Gearbox
Compressor
Universal joints must
be in phase
Shearing spacer
PTO and compressor shafts
must be parallel
_________
A =
√
H² + W²
L
If H = Zero, A = W / L
If W = Zero, A = H / L
Hydraulic motor
Drive kit, complete
Inspection plate for checking
alignment and speed.
Coupling
suction ports
WARNING
Thickness gauge
Angular misalignment Parallel misalignment Correct alignment
