Doosan P425CWJD - Key Electrical Component Functions

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Book: 23227143 (8-24-2010) Rev CPage12
Key Electrical Component Functions
PT1:
PT1 is a 0-500 psi gauge pressure transducer that measures
discharge air pressure.
PT2:
PT2 is a 0-100 psi gauge pressure transducer that measures
regulation system pressure.
RT1:
RT1 is a 10K ohm Thermistor type temperature sensor that
measures separator tank temperature.
RT2:
RT2 is a 10K ohm Thermistor type temperature sensor that
measures airend discharge temperature.
K1:
K1 is a SPST, 24 VDC relay used to engage the engine starter
solenoid.
K2:
K2 is a SPST, 24 VDC relay used to energize the engine inlet
heater.
U1:
U1 is a resistive level detector and low level switch sensor used to
monitor fuel level. The resistive function drives the fuel gauge and
the switch function opens to shut the machine down on low fuel
level.