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Solenoid Valves IVC and IVO
- These valves control position of the inlet valve in response to signals
from the “AirSmart” Controller. With both valves de-energized, the normally open IVC valve allows control
pressure to the inlet piston to close the valve. If IVC only is energized, the inlet valve is held in its current
position. If both valves are energized, control pressure is relieved from the inlet piston to allow the valve
to open.
Pressure Regulator
- The pressure regulator is used to supply a constant and low control pressure to
prevent damage to the inlet valve from “slamming". The regulator should be set for 25-30 psig.
Figure 4-6 – SHUTTLE VALVE
Shuttle Valve
(Figure 4-6) - Also known as a double check valve, the shuttle valve is a device which will
take two (2) supply signals and allow the one with the highest pressure to pass through. The shuttle
valve is used to provide control air pressure from either the reservoir or plant air system, as required
during different operating conditions.
Purge Air Valve
- The purge valve is a normally closed two-way air actuated valve that admits purge air
from the final discharge manifold to the compressor to counteract the oil knock that occurs in oil-flooded
rotary screw compressors when they are completely unloaded with pressure in the oil reservoir. This
valve is controlled by the same control pressure which controls the inlet valve.
Summary of Contents for AirSmart EAU99T
Page 13: ...13 10 618 Page 12 Figure 1 6 PACKAGE AIR OIL FLOW DIAGRAM 202EDM797 Ref Drawing...
Page 39: ...13 10 618 Page 38 Figure 4 8 CONTROL SCHEMATIC COMPRESSOR AT FULL LOAD 206EAU797 B Ref Drawing...
Page 42: ...13 10 618 Page 41 Figure 4 11 WIRING DIAGRAM WYE DELTA 329EAU546 A Ref Drawing Page 1 of 2...
Page 43: ...13 10 618 Page 42 329EAU546 A Ref Drawing Page 2 of 2...
Page 44: ...13 10 618 Page 43 Figure 4 12 WIRING DIAGRAM WYE DELTA 330EAU546 A Ref Drawing Page 1 of 2...
Page 45: ...13 10 618 Page 44 330EAU546 A Ref Drawing Page 2 of 2...
Page 49: ...13 10 618 Page 48 Figure 5 3 FLOW DIAGRAM 210EAU797 B Ref Drawing...