Edwards nES Series, Инструкция по эксплуатации, Страница: 36 / 56

5. Operation
5.1 Initial start-up
WARNING: SAFETY PRECAUTIONS
Risk of injury or damage to equipment. The operator must apply all relevant safety
precautions. Refer to Safety precautions during operation on page 12 Safety
precautions during operation on page 9.
Note:
The pump is supplied filled with oil.
Initial start-up instructions
▪ Check the process lines for the correct size to prevent high-pressure drop and for
cleanliness to protect the vacuum pump.
▪ Make sure the pump outlet is not obstructed.
▪ Check that the electrical connections correspond to the applicable codes and that
all wires are clamped tight to their terminals. The installation must be earthed and
protected against short circuits by fuses of the inert type in all phases. An isolating
switch must be installed near the vacuum pump.
▪ Turn on the voltage and turn it off immediately. For pumps with the three-phase
motor, check the rotation direction of the drive motor while the motor is coasting
to a stop. The correct rotation direction of the drive motor is indicated by an arrow
shown on the motor fan cowl. If the rotation direction of the drive motor is
incorrect, open the isolating switch and reverse two incoming electric lines.
Incorrect rotation direction of the drive motor may cause damage to the vacuum
pump.
▪ Start and run the vacuum pump for a few minutes. Check that the vacuum pump
operates normally.
Note:
If you use the vacuum pump for humid applications, we recommend that the unit
achieves optimal running temperature before it is put into operation. This can be
done by running the unit against a closed suction line for 30 minutes with an open
gas ballast.
Gas ballast location and use is indicated on the pump nameplate.
Page 32 - 07/2020
A35104880_B - Operation