Caution, Warning – Elmo Rietschle L-BV3 User Manual

Page 14

Installation

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6.3 Connecting

pipes/hoses

(vacuum

pump/compressor)

To prevent foreign bodies from entering the
unit, all connections are sealed off when
delivered.
Do not remove the sealing plugs until
immediately before connecting the
pipes/hoses.

For the arrangement of the pipe/hose
connections, see Fig. 3, Pg. 14.

The pumped gases/vapors are sucked in via
the inlet connection and discharged via the
discharge connection (see Chapter 6.3.1,
Pg. 15).
For operation the unit must be continuously
supplied with operating liquid.
This is fed in via the operating-liquid port (see
Chapter 6.3.2, Pg. 15) and discharged
together with the pumped gases/vapors
through the discharge connection.

Fig. 3: Pipe/hose connection of vacuum
pump/compressor

1 Operating liquid connection

G⅛", 10 mm [0.394"] deep

2 Discharge

connection

G⅜", 12 mm [0.472"] deep

3 Inlet connection

G⅜", 12 mm [0.472"] deep

4 Connection for cavitation protection

G⅛", 10 mm [0.394"] deep

5 Drain

hole

G⅛", 10 mm [0.394"] deep

CAUTION

If the unit is run dry, the mechanical seal will
be destroyed in a matter of seconds!
DO NOT switch on as long as the unit is not
filled with operating liquid!

Fill with operating liquid:

When and how the pump-motor unit must be
filled with operating liquid the first time is
dependent on the operating mode:

 For self-priming operation:

During

installation.

 For operation with operating-liquid feed:

After

completing installation.

For self-priming operation you now pour
operating liquid into the working space of the
pump-motor unit before you connect the
pipes/hoses to the unit.
Proceed as follows:

 Pour operating liquid into the open inlet

connection or discharge connection. For
proper filling quantities, see Chapter 3.3,
"Operating conditions", Section "Max. filling
quantity for operating liquid at a standstill",
Pg. 8.

 Remove the sealing plug with the seal from

the cavitation protection hole.

 Pour operating liquid into the open inlet

connection or discharge connection until
the operating liquid exits from the cavitation
protection hole.

 Close the cavitation protection hole with the

sealing plug and seal.

Then attach the pipes/hoses to the unit as
described in the following.

 WARNING

Danger due to gauge pressure and vacuum!
Danger due to escaping fluid!
During operation, connected pipes and vessels
are pressurized or vacuumized!
Make sure that all connections are sufficiently
tight! Use only pipes and vessels of sufficient
strength!