1 Safety and Responsibility
1.1 Safely dealing with sources of danger
Complying with safety notes
Disregard of safety notes can cause unforeseeable dangers!
➤ Allow maintenance work to be carried out only by authorised personnel.
➤ Use one of the safety signs below to advise others that the machine is currently being serv‐
iced:
Symbol Meaning
Don't activate the machine.
Warning:
The machine is being serviced.
Tab. 1 Advise others that the machine is being serviced.
➤ Before switching on, make sure that nobody is working on the machine and all access doors
and panels are closed.
Electricity
Touching voltage carrying components can result in electric shocks, burns or death.
➤ Allow only qualified and authorised electricians or trained personnel under the supervision of a
qualified and authorised electrician to carry out work on electrical equipment according to elec‐
trical engineering regulations.
➤ Before commissioning or re-commissioning the machine, the user must make sure there is ad‐
equate protection against electric shock from direct or indirect contact.
➤ Before starting any work on electrical equipment:
Switch off and lock out the power supply isolator and check that no voltage is present.
➤ Switch off any external power sources.
These could be connections to floating relay contacts or the electrical machine heating, for ex‐
ample.
➤ Use fuses corresponding to machine power.
➤ Check regularly that all electrical connections are tight and in proper condition.
Forces of compression
Compressed air is contained energy. Uncontrolled release of this energy can cause serious injury
or death. The following information concerns work on components that could be under pressure.
➤ Close shut-off valves or otherwise isolate the machine from the distribution network to ensure
that no compressed air can flow back into the machine.
➤ De-pressurise all pressurised components and enclosures.
➤ Do not carry out welding, heat treatment or mechanical modifications on pressurised compo‐
nents (e.g. pipes and vessels) as this influences the component's resistance to pressure.
The safety of the machine is then no longer ensured.
1 Safety and Responsibility
1.1 Safely dealing with sources of danger
No.: TTL-ESD_2C_10357405_10_00 E
Spare parts Screw compressor
ESD 442 SFC / 14 bar ESD.2C / 1204/1205
1
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