Installation
4990671000 February 2008
20
The mounting flange of the propeller shaft must be in-
stalled on the drive shaft of the compressor.
Bolt the propeller shaft to the mounting flange of the
liquid ring pump shaft.
The resulting angle of bend must not exceed 15° at
1,500 rpm speed.
Ensure propshaft spline is correctly engaged.
Observe marking.
4.8.4
Drive by Vee belt
If the engine speed must be raised or reduced, Vee
belt drive is recommended. Observe the rated speeds
in chapter 1.1 "Machine data".
The belt pulleys in the table below can directly be in-
stalled on the free shaft end.
Installation of the Vee belt drive
•
The axis of the driving and driven machines should
be parallel.
•
The grooves of the belt pulleys must be inline.
•
Vee belt lenghts should be the same to ensure uni-
form belt tension.
• The Vee belt tension is correct when the
installed and tensioned belt can be deflected by
the pressure of the thumb by 16 to 20 mm for
every 1000 mm axial distance.
Ensure the bending moment exerted by the
belt drive on the shaft of the driving machine is
within the limits recommended by the manufac-
turer.
Installing the Vee belt pulley with taper lock bush
1. Clean and degrease all blank faces. Place the pul-
ley and the bush one in the other. Bring holes in
alignment with each other and install screws
loosely.
2. Push the pulley with the bush on the shaft, align and
uniformly tighten the screws.
Fig. 4.7
Mounting the propeller shaft
Aqualine
1100
1600
2100
2700
Belt profile
XPB
XPB
XPB
XPB
Belt pulley
minimum
diameter D
W
1)
1)
Consult the manufacturer if smaller pulleys are to be used.
mm
280
280
280
280
Max. gauge
pressure with
Vee belt drive
bar
ü
1.5
1.5
0.5
0.5
Number of belts
in pressure
service
4
5
5
5
Number of belts
in vacuum
service
4
4
5
5
max. 15
at 1500 [1/min]
1
2
4
3
2
1
To liquid ring pump
2
Keyed shaft
3
Marking on splined joint
4
From drive
Fig. 4.8
Correct Vee belt tensioning
1000 mm
16…20 mm
D
w
1
2
1
Vee belt deflection (16 to
20 mm for every 1.000 mm
distance)
2
Axial distance
D
W
Vee belt pulley diameter,
min. 280 mm
