Generator Failure
22.3.11
Panda_AGT-DC_5000_12V_s01285_Operation manual.R03 - Chapter 7: Generator Failure Page 109
7.2.2 Fuel Solenoid Valve and Stop solenoid
For start problems the possibility of an error exists with the solenoid for engine stop or fuel sole-
noid valve, which both effect affect simultaneous on the fuel system.
1. Fuel solenoid valve
The fuel solenoid valve is located in front of the injection pump. It opens automatically, if the
"START"-button is pressed on the remote control panel. The solenoid valve is CLOSED when the
generator main power is switched "OFF". For this reason, it requires a few seconds before the
motor comes to a full halt
If the generator fails to start, runs rough, does not reach the proper RPM, or does not stop pro-
perly, the first item to suspect in most cases is the fuel solenoid valve and should be inspected
first.
A check of the fuel solenoid valve by removing the plug from the fuel solenoid valve for a short
period whilst in operation (first remove the small retention screw) and replace it immediately. The
motor should "react immediately" by revving high.If the motor does not react sharply to the recon-
nection of the solenoid wire, it is a sign that the solenoid valve could be faulty.
2. Solenoid for engine stop
The solenoid for engine stop is located at the injection pump.
1. Energized to stop
By pressing the "OFF"-button on the remote control panel, the solenoid is supplied with voltage
and attracts, whereby the fuel injection pump resets to the zero position and the generator stops.
2. Energized to run
This version is equipped with two solenoids an actuating and a stop solenoid. After being fed with
current, the actuating solenoid attracts the adjusting lever of the fuel injection pump, through
which the fuel can flow. The actuating solenoid is switched parallel to the starter motor, the stop
solenoid is switched parallel to the fuel pump. The position is held by the stop solenoid as long as
the generator is running.
01. Fuel solenoid valve
02. Fuel injector nozzles
03. Ventilation screw
Fig. 7.2.2-1: Fuel solenoid valve
01
02
03
