Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit - Manual (Page 68)

4. Interconnection
68
031-132-B0-001 Rev. A TM ©2000
4.3 Connectors, continued
4.3.2 Low Fuel Pressure Interface Connector
The interface control is a 2 pin Mini Mate N’ Lok connector (Near gas
solenoid). See Fig. 4-1 for location.
Pin 1 = +12VDC activates (opens) solenoid ONLY when APU is running.
Controlled by APU engine ON command.
Pin 2 = Solenoid common (negative) connection.
Pin Description Function
1 Low Fuel Pressure Sensor Contact CLOSED (LOW signal)
denotes Low Fuel Pressure
(LPV Versions only)
2 Low Fuel Pressure Common Return signal path for sensor
/)3
72
(&0
)520
/2: )8(/
6(1625
5HDU YLHZ ZLUH VLGH
Fig. 4-3 Low Fuel Pressure Switch Interface