OPERATING INSTRUCTIONS
18
3
Transportation and Storage
3.1
Transportation
The transportation of the complete unit has to
be effected correctly. For pumps with base
plate and motor you must not suspend the
pump from the ring loop on the motor.
3.2
Storage
It is advisable to store the unit in dry conditions.
The pump has to be protected against penetra-
tion of dirty parts.
4
Description of the Product
4.1
Construction
SPECK liquid ring vacuum pumps of the
V / VI / VG / VGI - type are closed coupled
pumps. The motor is also serving as pump
shaft. The shaft sealing is effected by a single
acting mechanical seal.
The pump is of simple, robust construction.
4.2
Function
The liquid ring rotates inside the working area
eccentrically to the shaft. The impeller trans-
mits the drive performance by the circulating
liquid ring as compression power to the gas to
be delivered. This produces low pulsation
compression.
Illustr 1
: function
The service liquid - normally water - must be
added and cooled continuously. This dissi-
pates the resulting compression heat and adds
liquid to the ring, since part of the liquid is
continuously dissipated along with the gas on
the pressure side. The liquid can be separated
from the gas in a discharge separator at-
tached.
5
Set up and Installation
CAUTION
The non-observation of all safety informa-
tions given under “5 Setting
up/Installation” shall invalidate any claims
of warranty including claims for compensa-
tion of damages.
5.1
Place of Installation
Always choose a place of installation, where
pump is easily accessible.
5.2
Setting-up the Unit
The vacuum pump has to be screwed with the
motor feet
without warping
to the base plate
or a plain base plate.
If low vibration running is a high priority, the
unit must be fixed to a vibration insulated
foundation (with no fixed connection between
the base plate and the foundation or the
equipment frame).
If the floor is uneven, chock up the base
plate/foot with appropriate flat objects, cement
or similar. Any warping of the base plate badly
affects the alignment of the coupling. It is
advisable to check the alignment of the cou-
pling with a ruler or a gauge (before and) after
tightening the base plate.
The mounting position is to be horizontal. The
suction and discharge fitting of the pump
should be positioned vertically facing upward
or horizontally to the right (view towards
pump). The horizontal discharge connection is
situated at bottom. In order to avoid the pump
to be drained out, when not being used, the
pressure pipe has to be raised up to the middle
of the shaft.
5.3
Pipes
Suction and discharge connections as well as
the connection for the operating liquid are
sealed, when the pumps is supplied, in order
to avoid the penetration of any foreign bodies.
The seals are not to be removed before the
pipes are fitted.
