Edwards nES Series, Инструкция по эксплуатации, Страница: 13 / 56

sure that there is no one checking or working on the machine. A suitable notice
must be affixed to the start equipment.
10. Air-cooled machines must be installed to make sure adequate flow of cooling air is
available and that the exhausted air does not recirculate to the inlet.
11. The electrical connections must correspond to the applicable codes. The machines
must be earthed and protected against short circuits by fuses in all phases. A
lockable power isolating switch must be installed near the pump.
12. On machines with an automatic start/stop system or if the automatic restart
function after voltage failure is activated, a sign stating "This machine may start
without warning" must be affixed near the instrument panel.
13. In multiple vacuum pump systems, manual valves must be installed to isolate each
pump. Non-return valves (check valves) must not be relied upon for isolating
multiple systems.
14. Never remove or tamper with the safety devices, guards or insulation fitted on the
machine.
15. Piping or other parts with a temperature over 70 °C (158 °F) and which may be
accidentally touched by personnel in normal operation must be guarded or
insulated. Another high
‑
temperature piping must be marked.
16. For water-cooled machines, the cooling water system installed outside the
machine must be protected by a safety device with set pressure according to the
maximum cooling water inlet pressure.
17. If the ground is not level or can be subject to variable inclination, consult the
manufacturer.
18. Pump outlet air contains traces of oil mist. Ensure compatibility with the working
environment.
19. Whenever air containing hazardous substances enters the pump (that is, biological
or microbiological agents), use abatement systems placed upstream of the vacuum
pump.
20. Any vacuum pump placed in an application with inlet gas stream temperatures
above the published maximum temperature should be approved by us before
start-up.
Note:
Refer to Safety precautions during operation on page 12 Safety precautions during
operation on page 9 and Safety precautions during maintenance or repair on
page 13 Safety precautions during maintenance or repair on page 10.
1.5 Safety precautions during operation
1. Never touch any piping or components of the vacuum pump during operation.
2. Use only the correct type and size of hose end fittings and connections. Make sure
that a hose is fully depressurised before disconnecting it.
3. Persons switching on remotely controlled machines shall take adequate
precautions to ensure that there is no one checking or working on the machine. To
this end, a suitable notice shall be affixed to the remote start equipment.
4. Never operate the machine when there is a possibility of taking inflammable or
toxic fumes, vapours or particles.
07/2020 - Page 9
A35104880_B - Safety and compliance