Instruction Book
9829 2115 69 10
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 start equipment.
7. Before removing any pressurized component, effectively isolate the machine from all
sources of pressure and relieve the entire system of pressure.
8. Never use flammable solvents or carbon tetrachloride for cleaning parts. Take safety
precautions against toxic vapors of cleaning liquids.
9. Scrupulously observe cleanliness during maintenance and repair. Keep dirt away by
covering the parts and exposed openings with a clean cloth, paper or tape.
10. Never weld on, or in any way modify, pressure vessels.
11. 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.
12. Never use a light source with open flame for inspecting the interior of a machine,
pressure vessel, etc.
13. Make sure that no tools, loose parts or rags are left in or on the machine.
14. 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.
15. 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.
16. Never use caustic solvents which can damage materials of the air net, e.g.
polycarbonate bowls.
17. 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.
Also consult following safety precautions: Safety precautions during installation
and Safety precautions during operation.
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.
After maintenance or repair, a functional test with depressurized vessels must
be performed to check the correct operation of the dryer.
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