Putting Into Service; Filling With Oil; Electrical Connection - MIL'S EVISA Serie Manual De Utilización

Depending on the application, the gases or vapours discharged may be noxious to the
health and/or environment. Respect the current regulations.
3.1.3.

Filling with oil

Remove the oil filler cap and fill up to the middle of the oil level sight situated at the bottom of the oil box.
Operating the vacuum pump without oil or with an insufficient quantity of oil can
damage it.
The use of not adapted oil can destroy the pump. Using another oil instead of that
recommended by MIL'S engage your responsibility or that of your supplier
3.1.4.

Electrical connection

It is obligatory for electrical connection to be carried out by a qualified electrician to
ensure that it is done in accordance with the rules of good working practice and in
accordance with the current regulations in the country of use.
The electrical characteristics of the motor must correspond to those of the mains power supply (voltage, frequency,
current).
If necessary, modify the position of the jumpers in the motor terminal box according to the mains voltage.
Protect the motor with a magneto-thermal circuit breaker. Select the rating of the circuit breaker with respect to
the current indicated on the motor.
If the thermal magnetic circuit breaker cuts off the power supply to the pump:
- Find the cause and eliminate it
- Wait for the oil to cool until it reaches the ambient temperature before restarting the pump
The pumps are designed for direct starting. The motors are IP 55 class F. The recommended maximum number
of start-ups ranges from about 6 to 10 per hour, depending on the power. (see § 3.2.).
External connections to the three-phase network:
Delta connection
Lower voltage
(example : 230V)
514400.14
EVISA E17/E25/E40/E65/E100/E150/E200/E300
Standard voltage range:
50 Hz
230 / 400 V ± 10%
60 Hz
265 / 460 V ± 10%
Y (star) connection
Higher voltage
(example: 400V)
3.2.

Putting into service

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 wrong 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 an 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 vapor pressure (Pwo) and pumping capacity of the water vapor (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
stabilized 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.
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