General instructions for installation and maintenance
EVISA-Series VACUUM PUMPS
Page 7/16
08/2015
Manual N° 516917 version 6 - GB
2.4. Shipping
The machines must be correctly packed in their original packaging before shipping. It is preferable to secure the package
to a European pallet so that it cannot overturn.
The pump must be drained before being shipped
.
2.5. Mounting
The vacuum pumps have four silent blocs with tapped holes in the base : 4 x M10.
We recommend that you use these tapped holes to mount the pump on a base frame.
2.6. Handling
Use the lifting rings provided for that purpose. Never place slings under the pump.
SECTION 3.
INSTALLATION AND PUTTING INTO SERVICE
3.1. Installation
The suction and discharge ports are protected during transportation by caps and stickers. Remove these protections
before commissioning the pump.
3.1.1. SUCTION
Connect the suction intake to the process, preferably using a hose, after inserting filters if required. The hose must
withstand the final pressure (0.05 mbar absolute). The hose diameter should at least match the connection diameter.
Remember to seal the connections.
To protect the pump, it is recommended to install a filter or a separator upstream, connected to the suction port. This
filter must be fixed on the pump so that no solid particle or liquid falls into the pump when replacing the filter element.
The pump is equipped with a non-return valve enabling to avoid any upwelling of oil if the chamber upstream of the
suction port remains vacuumed when the pump stops. However, this check valve is not a safety device. It is
recommended to isolate the pump from the vacuum network when it is stopped. Install an automatic isolating valve that
closes when the pump stops, or a non-return valve between the pump and the enclosure.
Never run the vacuum pump with a suction port open.
Pump performance will be reduced if the suction pipe is of too small a diameter and/or too long.
3.1.2. EXHAUST
Do not restrict or close the exhaust port. If the discharge is canalized, the section of the piping must
have an inside diameter equivalent to at least that of the pump's discharge port. The pipes must be
sized so that the pressure in the piping connected to the discharge never exceeds 100mbar relative.
If several pumps are connected to the same exhaust piping, the section of the latter must at least be equivalent to that of
the sum of sections of the pumps' discharge ports. The manifold must be designed so that, if condensation forms in the
exhaust piping, it cannot flow suck to one of the pumps. It is recommended to place a draining system at the lowest point
of the discharge piping.
If the discharge is connected to an extraction system, the relative pressure at the pump discharge must not drop
below -50mbar.
Depending on the application, the gases or vapours discharged may be noxious to the health and/or
environment. Respect the current regulations.
