Edwards nXR120i, Инструкция по эксплуатации

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2. Secure the dry pump system with the rubber stand-off and two small castors
( Figure: nXRi pumps , (5)).
3. Remove the plastic caps from the inlet and exhaust before you connect the pump
to the vacuum system. Use appropriate NW vacuum fittings for connection to the
system.
Obey the instructions that follows when you connect the pump to the vacuum system:
▪ Connect the pump to an exhaust line to minimize the noise and the exhaust
emissions.
▪ Make sure that the pipeline connected to the pump inlet is as short as possible.
Make sure that the pipeline has a minimum internal diameter to get maximum
pump speeds.
▪ Put support under the vacuum pipeline to prevent the load on the coupling joints.
▪ Make sure that the pump exhaust line is not blocked as a pressure of 3 bar(g) can
be generated in the exhaust pipework. Connect the pump with appropriate
pipework and fittings.
▪ If necessary, install flexible bellows in the system pipelines to reduce the
transmission of the vibration and to prevent the load on the coupling joints. The
pressure rating of the bellows must be higher than the highest pressure generated
in the system. We recommend that you use the manufacturer's bellows.
▪ If you use an exhaust extraction system make sure that it is appropriate for use
with all pumped process gases. Make sure that the exhaust extraction system is
not blocked or obstructed when the pump is in operation.
4.4 Leak test the system
CAUTION: SYSTEM LEAK TEST
Risk of injury or damage to equipment. Do the leak test of the system after
installation. Seal all the leaks found to prevent leakage of dangerous substances out
of the system and leakage of air into the system.
We will accept no liability or warranty claims for damages caused from flammable
mixtures because of air leaks.
1. Do the leak test of the vacuum system after installation.
2. Seal all the leaks found.
4.5 Electrical installation
WARNING: ELECTRICAL CONNECTION
Risk of electric shock. The electrical installation must be done by a qualified person.
Always make the electrical connections to the pump after the pump has been
installed on the vacuum system.
05/2021 - ©Edwards Limited Page 22 A90301880_C
A90301880_C - Installation