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Installation
The ventilation line needs a pipe internal diameter of
Øi = 28 mm. The specified cross sections refer to
about 2.5 meters line length. The ventilation line must
be installed at an upward gradient and the connection
is made on the "clean side" of the water separation
vessel.
Make sure of the correct size of the entrained
ventilation line. Check if sufficient fresh air can
enter the work space of the liquid pump via the
ventilation line. This is done by running the liq-
uid pump with closed intake line. If a loud noise
is heard, the entrained ventilation flow rate is
insufficient. In this case a larger ventilation line
must be installed.
If you want to drain all operating fluid from the liquid
ring pump, open all water drains (see Fig. 1.1).
4.8
Drive
The sense of rotation must agree with the
direction of the arrow on the liquid ring pump
Permissible speed range see chapter 1.1 "Machine da-
ta". The speed range must not be exceeded.
Make absolutely certain to observe the drive
speed increasing or reducing ratios (belt drive,
auxiliary drive of vehicle, ...)
We recommend a speed monitor at the liquid ring
pump with an indicator in the operating area.
At any rate, check the speed after installing the liquid
ring pump and put up a note for the operator of the ve-
hicle.
If the machine is powered by a combustion engine, the
engine must have speed control which limits the speed
to a permitted level if the engine power drops.
The axial thrust of the drive must not be trans-
ferred to the rotor shaft.
Install the drive components on the rotor shaft
using the available thread M16.
Do not attempt to install the drive components
on the rotor shafts with blows.
A hand guard and a clutch guard must be pro-
vided in any case.
4.8.1
Drive by hydromotor
The selection and installation of the hydromotor is the
responsibility of the installation firms.
Gardner Denver can supply a matching flange and a
clutch.
We have already installed the half clutch on the com-
pression side. After mounting the flange, the half clutch
on the motor side must not transfer axial thrust on the
liquid ring pump.
4.8.2
Drive by flexible clutch
If the pump is coupled directly to the drive (e.g. diesel
engine) a torsionally flexible clutch that compensates
most of the drive irregularities must be selected ac-
cording to the specifications of the engine maker.
Align the clutch exactly as prescribed by the
manufacturer.
4.8.3
Drive by prop. shaft
The prop. shaft drive must be
■
designed as a splined shaft,
■
balanced,
■
have smallest possible angles and be as short as
possible.
The centre axes of the prop. shaft flanges must be par-
allel with each other.
The mounting flange of the prop. shaft must be in-
stalled on the drive shaft of the compressor.
1
2
1
To liquid ring pump
2
Splined shaft
Fig. 4.7
Mounting the prop. shaft
Bolt the splined portion of the prop. shaft to the mount-
ing flange of the liquid ring pump shaft.
The resulting angle of bend must not exceed 15° at
-1
1,500 min
speed.
Do not install prop. shaft with the wrong end up.
Observe marking.
22
max. 15
at 1500 [1/min]
4
2
3
3
Marking
4
From drive
T-EA-5100-1-GB-07-08
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