
pipes and connections must be of the correct size and suitable for
the working pressure.
5. The aspirated air must be free of ammable fumes, vapours and
particles, e.g. paint solvents that can lead to internal re or
explosion.
6. Arrange the air intake such that loose clothing worn by people
cannot be sucked in.
7. No external force may be exerted on the inlet and outlet
connections, the connected pipes must be free of strain.
8. If remote control is installed, the machine must bear a clear sign
stating:
DANGER: This machine is remotely controlled and may start
without warning.
The operator must make sure that the machine is stopped,
depressurised and that the electrical isolating switch is open, locked
and labelled with a temporary warning before any maintenance or
repair. As a further safeguard, persons switching remotely
controlled machines must take adequate precautions to make sure
that there is no one checking or working on the machine. To this
end, a suitable notice shall be afxed to the start equipment.
9. Air-cooled machines must be installed in such a way that an
adequate ow of cooling air is available and that the exhausted air
does not recirculate to the inlet.
10. 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.
11. 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 afxed
near the instrument panel.
12. 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.
13. Never remove or tamper with the safety devices, guards or
insulation installed on the machine.
14. Piping or other parts with a temperature in excess of 70 ˚C (158 ˚F)
and which may be accidentally touched by personnel in normal
operation must be guarded or insulated. Other high temperature
piping must be clearly marked.
15. For water-cooled machines, the cooling water system installed
outside the machine has to be protected by a safety device with set
pressure according to the maximum cooling water inlet pressure.
16. If the ground is not level or has variable inclination, consult the
manufacturer.
17. Pump outlet air contains traces of oil mist. Make sure that it is
compatible with the working environment.
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300943860_A - Important safety information