Quincy Compressor QED-250 Instruction Book Download

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1.5

Safety precautions during maintenance or repair

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
starting equipment.

7. Close the dryer 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 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 vapor 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.

17. Protect the motor, electrical and regulating components, etc. to prevent moisture from entering them, e.g.

when steam-cleaning.

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

is in good condition. If damaged, replace it by genuine material from the manufacturer to prevent the
sound pressure level from increasing.

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

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.

• Always wear special gloves. In case of refrigerant contact with the skin, rinse the skin with water. If

liquid refrigerant contacts the skin through clothing, never tear off or remove the latter; flush
abundantly with fresh water over the clothing until all refrigerant is flushed away; then seek medical
first aid.

21.

The following safety precautions are stressed when handling desiccant:

• Take precautions not to inhale desiccant dust.
• Check that the working area is adequately ventilated; if required, use breathing protection.
• Do not overfill the dryer when replacing desiccant.

Instruction book

2920 7103 90