13-10-618 Page 32
Figure 4-3 – BLOWDOWN VALVE
Blowdown Valve
(Figure 4-3) - This valve normally is used for control functions, but also serves to
relieve reservoir pressure following a shutdown. The blowdown valve is a two-way solenoid valve which
is piped into the oil reservoir outlet ahead of the minimum pressure valve. When the solenoid is de-
energized, the valve opens and the coolant system is blown down. When the solenoid is energized, the
valve closes to allow the coolant system to pressurize. A control air check valve is provided to ensure
that the inlet valve is closed during blowdown.
Oil Level Gauge
(Figure 1-2, page 10 and Figure 5-6, page 54) - This gauge is located on the oil
reservoir and indicates the oil level. See Section 5 for information on how to correctly read the gauge and
proper lubrication.
Figure 4-4 – MINIMUM DISCHARGE PRESSURE/CHECK VALVE
Minimum Discharge Pressure/Check Valve
(Figure 4-4 page 32) - An internal spring-loaded minimum
pressure valve is used in the final discharge line to provide a positive pressure on the coolant system of
the compressor even if the air service valve is fully open to atmospheric pressure. This valve also
functions as a check valve to prevent back flow of air from the shop air line when the unit stops, unloads,
or is shut down.
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...