General instructions for installation and maintenance
EVISA-Series VACUUM PUMPS
Page 9/16 08/2015 Manual N° 516917 version 6 - GB
3.2. Putting into service
If the pump starts on line (direct starting), see §3.1.4.
Before starting the pump, check its oil level (see § 3.1.3.).
Start the pump briefly to check the direction of motor rotation (red arrow on the electric motor). If necessary, change the
direction by switching over the two motor power supply phase wires.
Operation in the incorrect direction of rotation can damage the vacuum pump
Restart the pump and let it run for three minutes, then stop it to top up the oil level if necessary.
In case of pumping condensable steam:
Use open gas ballast.
When restarting after a shut-down of more than an hour, let the vacuum pump heat up, with the suction closed and
gas ballast open, before use. It is advised to follow this recommendation for about 30 minutes.
After use, let the vacuum pump run with the suction port closed and gas ballast open. It is advised to follow this
recommendation for about 30 minutes.
The purpose of this procedure is to limit the formation of condensates inside the pump.
The maximum permissible water vapour pressure (Pwo) and pumping capacity of the water vapour (Cwo) values
indicated in the table of § 1.3 are valid only if the gas ballast is open and if the pump has attained its stabilised operating
temperature, for an ambient temperature of 20°C.
In case of frequent start-ups:
The number of start-ups per hour must not exceed 6.
If possible, leave the gas ballast open when the pump is stopped.
In case of a cyclic process (pumping time less than 2 minutes):
The pump must not be stopped between cycles but must be isolated from the chamber by a valve in order to let it run in
full vacuum. The power consumption of the pump is very low when it runs in full vacuum.
3.3. Servicing and preventive maintenance
Do not dismantle the pump more than necessary during repair, servicing or maintenance operations.
Take every possible precaution to protect the environment. In particular, all waste fluids should be
recovered and recycled. Never dispose of these fluids directly into the environment.
Call on the services of an accredited body in the country where the equipment is used to recycle the
oils, greases and filters.
It is vital during servicing and maintenance operations to take steps to protect against the risks
associated with moving or live parts.
Before performing any servicing or maintenance operation on the pump:
‐The pump must be powered off and electrically locked out.
‐Wait for the oil to cool until it reaches the ambient temperature.
‐Isolate the pump from the application.
Depending on applications, the pump parts may have been contaminated by the substances
pumped. Apply elementary hygiene rules and use suitable personal protective equipment.
These operations are to be performed by qualified and accredited personnel
All rubber seals removed, gasking or O-ring, must be changed.
