15
Instruction Manual
2.7
C
ONTINUOUS
REGULATING
SYSTEM
(
SEE
)
The compressor is provided with a continuous regulating system.
This system is provided with a blow-down valve (BDV). The valve
is closed during operation by outlet pressure of the compressor
element and opens by air receiver pressure when the compressor is
stopped.
When the air consumption increases, the air receiver pressure will
decrease and vice versa. This receiver pressure variation is sensed by
the regulating valve which, by means of control air to the unloader,
matches the air output to the air consumption. The air receiver
pressure is maintained between the pre-selected working pressure
and the corresponding unloading pressure.
When starting the compressor, the throttle valve (TV) is closed. The
compressor elements take in air and pressure builds up in the
receiver. The throttle valve is closed.
The air output is controlled from maximum output (100%) to no
output (0%) by air inlet throttling.
If the air consumption is equal to or exceeds the maximum air output,
the throttle valve is fully open.
If the air consumption is less than the maximum air output, the
regulating valve supplies control air to the throttle valve to reduce
the air output and holds air receiver pressure between the normal
working pressure and the corresponding unloading pressure of
approx. 1.5 bar above the normal working pressure.
When the air consumption is resumed, the throttle valve gradually
opens the air intake.
The construction of the regulating valve is such that any increase
(decrease) of the air receiver pressure above the pre-set valve
opening pressure results in a proportional increase (decrease) of the
control pressure to the throttle valve.
Part of the control air is vented to atmosphere, and any condensate
discharged, through the vent holes.
Summary of Contents for ORV 10
Page 1: ...ORV 10 ORV 12 ORX 10 ORX 12 Instruction Manual for Portable Compressors English ...
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