5. HEALTH & SAFETY INFORMATION
Have this tool repaired by a qualified person.
This tool is designed to confirm to the relevant
international and local standards and as such should be maintained and repaired by someone
qualified; using only original parts supplied by the manufacturer: This will ensure the tool
remains safe to use.
5.2 ADDITIONAL SAFETY INSTRUCTIONS FOR SAFETY VALVES
Information:
The safety valves are designed and constructed for use exclusively with
compressed air, free from impurities. The materials used in construction are suitable for
operating the valve at the rated pressure and temperatures. The Viton or NBR gasket
conserves the resistance characteristics, even in prolonged use. The valve caulking impedes
calibration modification; tampering with the valve and/or changing the constructor’s
calibration is forbidden.
Installation:
Valve installation must be performed exclusively by technically prepared
persons, who are responsible and in good health. Checking the integrity of the valve before
installation is obligatory. Also, check that the valve pressure is no greater than the operating
pressure of the tank or of the system to protect. Check that the discharge flow rate of the
valve is greater than the quantity of the air to discharge. The safety valve must be positioned
directly on the tank in a vertical position, in a dry, accessible place protected against the
weather and far away from liquids or condensation. It must be positioned so as to have
sufficient space all around for correct air discharge, without causing damage to persons
and/or things. The valve rod must therefore be free in its movement when discharging. The
connection between the valve and the part to be protected must be free from all kinds of
choking and be as short as possible so as not to reduce the discharge flow rate of the valve
itself. The connection passage area must be greater than the valve orifice area. During
installation, screw on the valve with a torque spanner using the hexagonal part of the body.
Apply a maximum torque of 30Nm, paying attention not to cause any deformation; using
pincers, pliers, hammers or tools other than a hexagonal spanner is forbidden. Check the
inlet hole and the shutter are not blocked by glue, teflon or similar materials that could bind
the shutter or other functional components. If the valve is replaced, the compressor air
contained in the system must be discharged first. We decline all responsibility for damage
caused to persons and/or things due to failure to observe these instructions.
Maintenance and inspection:
The valve must not be subject to knocks which may cause
deformities. It is obligatory for qualified technicians to make sure that the safety valve
functions correctly at least once a year. Valves equipped with a ring must be tested while
pressurised to between 80-90% of the calibration value. Pull the ring and release
immediately. During the test the valve must definitely open and discharge the air and
re-close immediately when the ring is released. It is absolutely necessary to carry out this
procedure with the utmost caution because this type of job can be dangerous if adequate
safety measures are not taken; wear goggles, a head set and anything else necessary to
protect against noise, jets of air, etc. which may be discharged from the valve.
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