General Points On The Medical Vacuum Station; Series; Description; Vacuum Pumps - Rietschle RVM 25.3.000 Instructions De Service

1.1 Series

These instructions for use apply to medical vacuum stations
(RVM) "RIETSCHLE MEDICAL VACUUM". The nominal capac-
ity of the stations at atmospheric pressure is 3 x 25, 3 x 40, 3 x
60, 3 x 100, 3 x 160 and 3 x 250 m³/h at 50 Hz. The max.
vacuum is 10 mbar (abs.).
The pumping curves showing capacity against. Vacuum can be
seen in data sheets D 154 (VCE) and D 194 (VCEH).

1.2 Description

The RVM vacuum stations comprise three vacuum pumps (VCE
or VCEH type), a skid for the tank and a programmable control
panel. They can also include a bacteriological filter with by-
pass. Each pump is equipped with a non-return valve so that
once the pump is stopped air cannot enter the evacuated sys-
tem or oil accumulate in the pressure chamber that would give
rise to jerky starting. A manual valve is mounted on every de-
vice in order to isolate the pump for maintenance. The inlet of
each pump can also be fitted with a control valve for constant
vacuum regulation.

1.2.1 Vacuum pumps

The vacuum pumps are of the oil lubricated rotary vane type
and have built-in oil mist separator. Each pump is equipped
with an inlet screen filter of stainless steel material.
1.2.2 Tank
Capacity: 300, 500, 800, 1000, 1500, 2000, 3000 or 5000
litres vertical (or horizontal version) with external paint fin-
ish. Material steel ST37-2 a galvanised version or vertical
tanks can be manufactured upon request.
Every tank is equipped with a valve of purge and must
be used only for vacuum.

1.2.3 Control Panel

It controls the whole vacuum station through a programma-
ble controller. Every panel features a display keyboard with
a switch case comprising the electromechanical operating
material.
The control panel corresponds to the latest European stand-
ards (see operating manual control panel)

1.2.4 Bacteriological filtration (optional accessories)

Every station can be delivered with single or double bacte-
riological filter with by-pass to prevent bacteria passing
through the equipment. It is fitted with a drain valve and a
filter with bacteriological cartridge (for double filtration, a
second filter is put in the by-pass).

1.3 Application

Vacuum stations are suction systems intended for
medical use.
They are designed to work in a pressure range of 150 mbar
(abs.) to 350 mbar (abs.). Limitations of the operating pressure
range are specified in the vacuum pump manual.
The air must be free of water and other liquids. Ag-
gressive or flammable gases and vapours cannot be
drawn.
The ambient and inlet temperatures must range from
5 to 40°C. For other temperatures please contact us.
The vacuum and function alarms must always be connected
and all the safety standards met in order to prevent expos-
ing the persons to danger.

1.4 Handling and setting up

A normally operated station can present pump sur-
face temperatures for the elements (Q) above 70°C.
Any contact with these parts must be avoided.
The following parts must be easily accessible; filter casing (D),
oil filler opening (H), oil sight glass (I), oil drain (K), gas ballast
(U) and oil separator housing (T). The cooling air inlets (E) and
outlets (F) must be separated from the surrounding walls by
min. 20 cm. For easier maintenance a space of 0,4 m is recom-
mended in front of the filter casing and the oil separator hous-
ing.

1. General points on the Medical Vacuum Station

RMV stations can only be correctly used in a horizontal
position.
The control panel must only be opened and checked
when switched off and by a skilled worker, in accord-
ance with the EN 60204 standard.
The panel and electromechanical sub-system must remain free
for display, programming and repairing.
The bacteriological filtration and the collection pot
must remain accessible for maintenance purposes.
Should the station be installed higher than 1000 m over
the sea level, a decrease in performance will take place. In
this case, please contact us.
The vacuum station must be installed in a ventilated plant
room where the temperature should not exceed 40°C.
Appropriate ventilation has to be provided. The room
must be easily accessible.
Compliance with the Directive concerning protection of
labour must be observed as far as station installation and
operating are concerned.
1. Vacuum connection is found at the collector.
The station performance will be affected if the inlet
pipework is undersized and/or too lang. Discharge
has to be directed outside in accordance with the cur-
rent standards. It must not be closed or occluded. A
discharge pot must be installed.
2. You have to check whether oil condensate is present in the
vacuum pumps (upper warning light (I) and add if neces-
sary).
3. Connect the control panel to the main supply via a circuit
breaker. Check that the supply is compatible (current, volt-
age, frequency).
The electrical connections and installation can only
be performed by a skilled worker according to the
EN 60204 standard. The main switch (circuit breaker) of
the room has to be provided by the user.

1.5 Setting

The starting should be realized by Rietschle or a part-
ner of Rietschle.
The panel screws must be checked and screwed up if nec-
essary before setting.
1. The pumps must be run individually and the direction of
rotation checked according to the arrow (O): start the de-
vices separately in manual mode (see IS control panel).
2. Once the direction of rotation is correct, set the desired
vacuum rate on the control panel.
Factory threshold:
Constant vacuum:
Current vacuum range:
The parameters must not be modified without agree-
ment of Rietschle.
Start the station with each pump in automatic position (see IS
panel). Once every pump has been operating for about two
minutes, stop the devices again to add oil if the warning light
(I) indicates need. The filling opening must remain closed while
running.
Oil must be added for the VCEH pumps through the filler open-
ing (H) until the cooling radiator is full. The filler opening must
not be opened while the pump is running.
- 2 -
200 mbar (abs.)
± 25 mbar
150 mbar - 350 mbar (abs.)