Doosan 25/300, Электронное руководство по обслуживанию

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Book No. 22772784 (9--8--06)
HP1300/1600WCU Electrical Manual
OPERATIONAL INFORMATION
Power “ON” at Control Panel:
1. Key switch signal (24VDC) supplied to engine controller by WEDGE controller
2. Frequency throttle signal OFF
3.
Unloader solenoid valve (L2) is closed (de--energized)
4. Start--up compressor is turned on for 10 seconds
Engine Start--up:
When the key is switched to the engine crank position:
1. Unloader solenoid valve (L2) is closed (de--energized).
2. Start compressor is turned on.
3. Key switch signal (24VDC) is supplied to engine controller.
4. K1 auxiliary start relay is energized.
5. Run/Start solenoid valve (L1) is opened (energized).
Note: Start compressor remains on, run/start solenoid stays open and unloader solenoid valve
stays closed for 10 seconds after the key is released if the engine does not start.
When the engine speed reaches 600 RPM (engine start declared):
1. Engine speed is set to 1500 RPM.
When the engine speed reaches 1450 RPM:
1. Unloader solenoid valve is opened (energized), L1.
2. Start compressor is turned off.
3. Run/Start solenoid valve is closed (de--energized), L2.
When the separator tank pressure reaches 50 psi:
1. Run/Start solenoid valve is opened (energized), L1.
After 5 seconds:
1. Engine speed is set to idle (1200 RPM if air end discharge temperature is approximately 150 degrees
F or (if J1939 CAN is functioning). The engine coolant is 100 degrees F. Othrwise, the engine idle stays
at 1500 RPM.
Loading:
When the “Service Air” switch is pushed:
1. Engine speed is set to 1800 RPM
When engine speed reaches 1700 RPM:
1. Run/Start solenoid valve is closed (de--energized).
After 2 seconds and if the regulation system pressure is 4 psi or greater:
1. Compressor pressure control is engaged.