300676782_002_C0
7 6996 0229 87 Issue A – 05/2017 – © Leybold
9. 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 has to make sure that the machine is stopped and that isolating switch is open and
locked before any maintenance or repair. As a further safeguard, 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 starting equipment.
10. Air-cooled machines must be installed in such a way that an adequate flow of cooling air is available
and that the exhausted air does not recirculate to the vacuum/over-pressure pump air inlet of the
vacuum relief valve or cooling air 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 vacuum/over-pressure pump.
12. On machines with 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/over-pressure 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 that exceeds 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.
16. If the ground is not leveled or can be subject to variable inclination, consult the manufacturer.
17. Whenever air containing hazardous substances are sucked in (that is, biological or microbiological
agents), use abatement systems placed upstream of the vacuum/over-pressure pump.
18. Any pump placed in an application with inlet gas stream temperatures above the published
maximum temperature should be approved by Leybold prior to start-up.
CAUTION
Also consult following safety precautions: Safety precautions during operation and Safety precautions
during maintenance.
These precautions apply to machinery processing or consuming air or inert gas.
Processing of any other gas requires additional safety precautions typical to the application which are
not included herein.
Some precautions are general and cover several machine types and equipment; hence some
statements may not apply to your machine.
1.4 Safety precautions during operation
WARNING
All responsibility for any damage or injury resulting from neglecting these
precautions, or non-observance of the normal caution and care required for
installation, operation, maintenance and repair, even if not expressly stated, will be
disclaimed by the manufacturer.
1. Never touch any piping or components of the pump during operation.
2. Use only the correct type and size of hose end fittings and connections. Make sure that a hose is
fully depressurized before disconnecting it.
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