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 start equipment.
• 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 compressor air inlet or cooling
air inlet.
• 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 compressor.
• 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.
• In multiple compressor systems, manual valves must be installed to isolate each compressor.
Non-return valves (check valves) must not be relied upon for isolating pressure systems.
• Never remove or tamper with the safety devices, guards or insulation fitted on the machine.
Every pressure vessel or auxiliary installed outside the machine to contain air above
atmospheric pressure must be protected by a pressure relieving device or devices as required.
• 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.
• If the ground is not level or can be subject to variable inclination, consult the manufacturer.
• In an installation with multiple compressors, the outlet piping must be installed in such a way
that condensate cannot flow back into the compressor. See section Installation proposal.
Note: Also consult the following safety precautions: Safety precautions during operation and
Safety precautions during maintenance or repair.
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.
• Never touch any piping or components of the machine during operation.
• Use only the correct type and size of hose end fittings and connections. When blowing through
a hose or air line, ensure that the open end is held securely. A free end will whip and may
cause injury. Make sure that a hose is fully depressurized before disconnecting it.
• 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.
• Never operate the machine when there is a possibility of taking in flammable or toxic fumes,
vapors or particles.
• Never operate the machine below or in excess of its limit ratings.
• Keep all bodywork doors shut during operation. The doors may be opened for short periods
only, e.g. to carry out routine checks. Wear ear and eye protection when opening a door.
Instruction book
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