8
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8.
Before removing any pressurized component, effectively isolate the machine from all sources
of pressure and relieve the entire system of pressure. Before disconnecting any piping,
pneumatically isolate the section and slowly bring the pressure to atmospheric pressure. Do
not suddenly open any isolating valve that may cause rapid evacuation of any section that may
be at high pressure. Open valves slowly and allow sufficient time for the pressure to stabilise.
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 equipment.
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 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 sections
Safety precautions during installation
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 equipment.
Summary of Contents for dMED 025
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