Specification Plates; Description; Vacuum Pumps; Receivers - MIL'S HOSPIVAC G EVISA E350.R Manual De Operación Y Mantenimiento

1. INTRODUCTION
Please ensure you are familiar with the operating instructions prior to commissioning
your vacuum plant. Damage which may arise from incorrect siting or installation is not
covered by our guarantee.
In order to simplify any future requests for spare parts or further information about your vacuum unit, we
advise you to copy onto this page the specifications written on the plates fixed to the vacuum unit, as soon
as you receive your machine. Consult the copy of the specification plate fixed to vacuum plant in fourth of
cover.
1.1.

Specification plates

Type Hospivac units
Serial number
2.

DESCRIPTION

An HOSPIVAC G vacuum unit can consist of:
 1 to 6 vacuum pumps on base HOSPIVAC G.
2.1.

Vacuum pumps

HOSPIVAC vacuum plants are mounted with EVISA vacuum pumps.
2.2.

Receivers

The receivers are made and designed especially for vacuum.
The capacity of the receiver(s) must be adapted according to the FLEXO regulation and the number of
vacuum pumps.
The so-called "secondary" receiver will be installed as a "dead-end" on the main pipe work. It will enable
the plant to be correctly controlled. This secondary receiver can be fitted close to or a long way from the
main receiver without any problem.
2.3.

Filtration and delivery pot

An antibacterial filtration unit traps bacteria before they reach the receivers and the vacuum pumps.
Our main bacteria filters consist of a pot/opaque filter containing a special bacteria cartridge fitted with a
deflector. This filter is opaque to prevent bacteria from proliferating in the filter element. The cartridge is
made of micro fibres bound with borosilicate, and its filtration fineness is approximately 1/100th of a
micron. This cartridge passes the so-called sodium flame test. Penetration of bacteria and living
microorganisms is well below 0.05%, a value generally demanded by standards in various countries.
A sterilizable transparent Pyrex bottle is screwed to the base of the filter units.
An exhaust pot is placed on the exhaust circuit, located at the lowest point. Its purpose is to catch
condensation produced in the exhausted gas evacuation duct.
517463-07
HOSPIVAC G E350.R
2.4.
One electrical cabinet combines the motor control and protection systems.
Several types of control are available, depending on individual use:
 PROCOM-2 microcomputer to control between 1 and 6 pumps with sensor regulation,
 CYCLIC 2020 electronic system to control 2 or 3 pumps with sensor regulation,
3.

OPERATION

The air conveyed by the vacuum network passes through the main bacteria filter, enters the main receiver
and is then sucked by the vacuum pump(s) of the vacuum unit/plant.
The exhaust system consists of an exhaust hose fitted with a condensate collecting pot on a by-pass at the
lowest point of the network.
The pumps include a built-in check valve and, for added safety, a isolating valve DN80 has been fitted. This
is located between the pump hose and its inlet into the receiver.
Constant vacuum regulation type
When the vacuum pump is switched on, the operation is forced during a FLEXO time: FLEXO regulation.
During this time, it's necessary to limit the vacuum level. So, when the network pressure reaches –880
mbar, the constant vacuum solenoid valve opens in order to inject a sufficient volume of air under the
suction valve of the vacuum pump to generate a difference of pressure upstream and downstream from
this valve so that it is closed.
When the network pressure reaches –830 mbar, the constant vacuum solenoid valve is closed, the suction
valve of the vacuum pump opens and the vacuum pump operates. This simple system enables the vacuum
pump to be "disconnected" from the network in full safety and ensures a constant vacuum.
Normal operation = solenoid valve is closed
P1 = P0

E600.R

Electrical box

P1 P0
the suction valve is opened
P1 > P0
Discharge = solenoid valve is opened
P1 P0
the suction valve is closed
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