Atlas Copco ZT-55 Instruction Book Download

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1.5

Safety precautions during maintenance or repair

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.

Precautions during maintenance or repair

1. Always use the correct safety equipment (such as safety glasses, gloves, safety shoes, etc.).
2. Use only the correct tools for maintenance and repair work.
3. Use only genuine spare parts.
4. All maintenance work shall only be undertaken when the machine has cooled down.
5. A warning sign bearing a legend such as "work in progress; do not start" shall be attached to the starting

equipment.

6. 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.

7. Close the compressor air outlet valve before connecting or disconnecting a pipe.
8. Before removing any pressurized component, effectively isolate the machine from all sources of pressure

and relieve the entire system of pressure.

9. Never use flammable solvents or carbon tetrachloride for cleaning parts. Take safety precautions against

toxic vapours of cleaning liquids.

10. Scrupulously observe cleanliness during maintenance and repair. Keep dirt away by covering the parts

and exposed openings with a clean cloth, paper or tape.

11. Never weld or perform any operation involving heat near the oil system. Oil tanks must be completely

purged, e.g. by steam-cleaning, before carrying out such operations. Never weld on, or in any way modify,
pressure vessels.

12. Whenever there is an indication or any suspicion that an internal part of a machine is overheated, the

machine shall be stopped but no inspection covers shall be opened before sufficient cooling time has
elapsed; this to avoid the risk of spontaneous ignition of the oil vapour when air is admitted.

13. Never use a light source with open flame for inspecting the interior of a machine, pressure vessel, etc.
14. Make sure that no tools, loose parts or rags are left in or on the machine.
15. All regulating and safety devices shall be maintained with due care to ensure that they function properly.

They may not be put out of action.

16. Before clearing the machine for use after maintenance or overhaul, check that operating pressures,

temperatures and time settings are correct. Check that all control and shut-down devices are fitted and that
they function correctly. If removed, check that the coupling guard of the compressor drive shaft has been
reinstalled.

17. Every time the separator element is renewed, examine the discharge pipe and the inside of the oil separator

vessel for carbon deposits; if excessive, the deposits should be removed.

18. Protect the motor, air filter, electrical and regulating components, etc. to prevent moisture from entering

them, e.g. when steam-cleaning.

19. Make sure that all sound-damping material and vibration dampers, e.g. damping material on the bodywork

and in the air inlet and outlet systems of the compressor, is in good condition. If damaged, replace it by
genuine material from the manufacturer to prevent the sound pressure level from increasing.

20. Never use caustic solvents which can damage materials of the air net, e.g. polycarbonate bowls.
21.

The following safety precautions are stressed when handling refrigerant:

• Never inhale refrigerant vapours. Check that the working area is adequately ventilated; if required, use

breathing protection.

Instruction book

APFS998935v00