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13-21-615 v01 Page 41
FIGURE 4-7 COMPRESSOR PACKAGE CONTROL COMPONENT STATES
Package Control Component States
Action
IVO
Solenoid
IVC
Solenoid
TVO
Solenoid
TVC
Solenoid
BDV
Solenoid
Main
Motor
State
Reservoir
Pressure
(PSIG)
P1
Blowdown
(BD) Test
Port
P2
Inlet
Valve
(IC) Test
Port
MPV
State
Compressor
Flow State
Start Up
Closed
Off
Closed
On
Closed
Off
Open
On
Closed
On
On
D
D
D
Closed
Increasing
Close, TV
Modulate
Closed
Off
Closed
On
Closed
Off
Open
On
Closed
On
On
A
D
D
Open
Increasing
Open, TV Modulate
Closed
Off
Closed
On
Open
On
Closed
Off
Closed
On
On
A
D
D
Open
Decreasing
Open, IV Modulate
Open
On
Closed
On
Closed
Off
Closed
Off
Closed
On
On
A
D
D
Open
Increasing
Close, IV Modulate
Closed
Off
Open
Off
Closed
Off
Closed
Off
Closed
On
On
A
D
B
Open
Decreasing
Blowndown
Open
On
Open
Off
Closed
Off
Closed
Off
Open
Off
On
C
C
B
Closed
0
Stopped
Closed
Off
Open
Off
Closed
Off
Closed
Off
Open
Off
Off
D
D
D
Closed
0
A = Full System Pressure B = 60 psig, Control Pressure C = 30-40 psig D = 0 psig, Atmospheric