DANGER
2.3.3 Safety valves
The safety valves prevent damage to the compressor by overpressure and are factory set at the
following pressures:
1st stage: 113 psi (8 bar)
2nd stage: 725 psi (50 bar) 3rd stage: 5000 psi (340 bar).
In case a safety valve blows, do not adjust to a higher pressure but check for the cause. Refer to
section 5.
Adjustment of the safety valves, by non-authorized persons, may result in the loss of the
warranty and may result in serious injury or death.
2.3.4 Cooling, lubrication
The 1st and 2nd stage intercoolers and the after cooler consist of steel pipes and are smooth. The
splash lubrication operates with oil thrower pins. The high-pressure stage is lubricated by oil vapors.
2.3.5 Pressure holding valve
This valve is mounted after the carbon filter.
Working Procedure
This valve will only open when the internal pressure of the compressor has reached 1800PSI ±300 PSI
(80 ±20 bar) to permit a constant and optimum separation.
2.4 Base Frame, Protective Frame, Covers
Depending on the specifications of the buyer, the compressor rests on a base frame consisting of
welded section steel with an additional frame bracket for the mounting of electric motors or it is further
equipped with an allover protecting frame. This frame is also made of section steel and its entire
surface is painted to make it weather and corrosion-resistant.
The flywheel of the compressor, in the basic version, is covered by a steel cover or a grid, both being
designed with a view to safety and optimum air guidance.
The front panel incorporates 2 filling valves, final stage pressure gauges and the side panel
incorporates the condensate drain manifold for the manual draining of the filters (special frame version
mod. compact).
WARNING
3. Safety Precautions for The Filling of Cylinders
3.1 General Precautions for the filling of cylinders
Take care that the intake air is pure and free from noxious gases and exhaust fumes.
Make use of the intake hose and secure it in such a way as to ensure that no engine exhaust fumes are
taken in.
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