Electrical Connection; General Precautions; Pump's Use; Pump's Starting - wigam P2S Instrucciones De Uso Y Mantenimiento

2.4 Electric connection
Check the features of the electric supply: they must comply with those marked on the pump's plate.
With the three-phase pump, make sure that the rotation is clockwise by watching the motor's cooling fan. The
motor's electrical winding is equipped with an automatic reset thermal protection that cuts off power supply at
+130°C (+266°F).

2.5 General precautions

Always make sure that the pump is connected to a suitably protected mains supply provided with an efficient
earth connection.
Even if the pump 's temperature never reaches high values during evacuation, make sure to place the pump so
that it can never cause damages to the operator, such as small burns.
In case the pump is mounted in another equipment, fixing must be such as to be safe for the operator.
The pump's motor is air-cooled with a fan; operate the pump only in locations with suitable ventilation and keep
the fan guard at least 4 cm away from walls or obstacles.

3. Pump's use

To grant reliability and high quality level, each pump is subjected in factory to a rigorous testing and a suitable
preliminary running in.
Constant performances and long operative life are assured by the strict observance of the following procedures.

3.1 Pump's starting

Before its first use, it is necessary to:
- fill the pump with oil (see "2.1 Oil filling")
- let the pump run for a few minutes with the suction connection closed.
Check the oil level before the following startings.
In case of malfuntioning, stop the pump and call the technical assistance.

3.2 Pump's stop

Make sure to close the suction piping before stopping the pump (only for pumps without solenoid vaves). This is
to prevent atmospheric air on the discharge connection from pushing the oil into the evcauated circuit when the
pump stops.
The mixture of incompatible lubricants (pump's oil and compressor's oil) can cause problems in the good functioning
of the compressor.
In case of frequent on-off cycles, do not stop the pump, but close the valve situated at the end of the suction flexible
hose, so that you can disconnect it from the evacuated circuit, even if the pump is still running.
Before the pump's stop, let it run for a few minutes with the gas ballast valve open and the suction closed in order
to eliminate moisture and residual refrigerant in the pump's oil.

4. Routine maintenance

The periodic and correct maintenance of high vacuum pumps allows a long operative life and constant stated
performances.

4.1 Lubrication

The oil supplied with the pump has been especially manufactured to lubricate high vacuum pumps; minimum
viscosity fluctuation in a range of temperature from +10°C up to +100°C (+50°F to +212°F) marks it out.
Its chemical features allow to evacuate cooling circuits operating with CFC or HCFC refrigerants (R12, R22, R502,
etc..). We suggest to fill the pump with synthetic oil to evacuate cooling ciscuits operating with HFC refrigerants
(R134a, R404A, etc...); synthetic oil is available on request.
P.S. The pumps equipped with a solenoid valve allow the use of mineral oil with any type of refrigerant.
Oil quantities requested to fill in the pumps are specified in section "1.1 General performances and technical data".
Replace the first oil charge after about 150-200 hours of running; following oil changes must occur every 400-500
hours of runnig or every 3-4 months.
Lubricants – available models for routine maintenance
Mineral oil
Model: K1 L
Code: 12002003
Viscosity: ISO68
Packaging: 1 lt

4.2 Oil changing

The oil must be changed periodically or when it becomes cloudy because of pollutants. During oil refilling operations,
the pump must be turned off.
14
Synthetic POE oil
Model: SW68
Code: 12002004
Viscosity: ISO68
Pacakging: 1 lt
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