36
COMPONENT DESCRIPTION
3.7.2 INLET CONTROL VALVE
The inlet control valve is the main control for air capacity within the air compressor. It is equipped with a
poppet disc for inlet control as well as reverse flow check. The valve is initially opened at start-up by suction
created by rotating screws in the compressor unit. An air signal from the pressure regulating control valve
will modulate the poppet disc when air demand is low. Upon shutdown, the poppet disc closes to eliminate
reverse airflow from the compressor to prevent the compressor unit from turning backwards. The inlet valve
is mounted directly to the compressor unit inlet.
3.7.3 PRESSURE REGULATING CONTROL VALVE
The pressure regulating control valve modulates the inlet valve to match incoming air with output air
demand. The valve is normally closed. It will open when the line pressure rises to the adjustable set point. As
the pressure regulating control valve opens, an air signal is sent to modulate the inlet valve. The pressure
regulating control valve is located off the top of the sump tank lid.
3.7.4 CONTROL PRESSURE SWITCH (CPS)
The control pressure switch controls the opening and closing of the blowdown solenoid valve. The switch is
normally open. An adjustable load and unload setting on the control pressure switch determines the state of
the switch based on air demand. These settings are initially determined by the factory, but can be adjusted
within the limitations of the compressor according to
6.12 Pressure Adjustment on page 54
.
3.8
MONITORING SYSTEM
The monitoring system is a mechanical gauge panel equipped with specific gauges required to monitor
critical outputs for proper operation of the compressor. In an open machine the gauge panel is located on
top of the starter enclosure box. In compressors that have a sound-reducing enclosure, the gauges are
mounted on the outside front panel of the enclosure. For more details about the gauges and controls, refer
to
5.1 Electro-Mechanical Controls on page 42
.
Содержание 15D
Страница 6: ...vi About This Manual ...
Страница 12: ...4 Introduction ...
Страница 20: ...12 Specifications 2 2 DIMENSIONS OPEN BASE MOUNT AIR COOLED Figure 2 1 GA 15 40D AC BM OPEN ...
Страница 21: ...13 Specifications 2 3 DIMENSIONS ENCLOSED BASE MOUNT AIR COOLED Figure 2 2 GA 15 40D AC BM VERT ENCL ...
Страница 22: ...14 Specifications 2 4 DIMENSIONS OPEN BASE MOUNT WATER COOLED Figure 2 3 GA 15D 30D WC BM HORZ OPEN GAUGES ...
Страница 23: ...15 Specifications 2 5 DIMENSIONS ENCLOSED BASE MOUNT WATER COOLED Figure 2 4 GA 15 40D WC BM ENCL GAUGES ...
Страница 24: ...16 Specifications 2 6 DIMENSIONS OPEN PLATFORM MOUNT AIR COOLED Figure 2 5 GA 15 40D AC PLAT OPEN GAUGES ...
Страница 25: ...17 Specifications 2 7 DIMENSIONS ENCLOSED PLATFORM MOUNT AIR COOLED Figure 2 6 GA 15 40D AC PM VERT ENCL ...
Страница 30: ...22 Specifications 2 12 PIPING AND INSTRUMENTATION AIR COOLED Figure 2 11 GA P I S R02 ...
Страница 31: ...23 Specifications 2 13 PIPING AND INSTRUMENTATION WATER COOLED Figure 2 12 P I 15 40 WC GAUGES R00 ...
Страница 34: ...26 Specifications ...
Страница 66: ...58 Troubleshooting ...
Страница 84: ...76 Parts Catalog 8 10 AIR INLET ASSEMBLY 15 30HP 13 12 11 13 12 4 5 2 3 14 1 Figure 8 6 AS805 030D7H TE R00 ...
Страница 88: ...80 Parts Catalog 8 12 AIR INLET ASSEMBLY 40HP 14 15 5 15 4 3 2 13 1 Figure 8 8 AS805 040DS TE REV 00 ...
Страница 112: ...NOTES ...
Страница 113: ...NOTES ...