Alpha Technologies AlphaGen 3.5_5.0kW Kohler COM5 - Manual (Page 48)

TP-6482 8/06 48 Section 5 Component Testing and Adjustment
Move the generator set master switch to Start and check
for 12 VDC to the starter relay on lead 71 during the
crank attempt. See Figure 5-19. If there is no voltage to
the
starter during the crank cycle, check the
connections. Then check for voltage from the controller
at J4-1 and P2-1 (see the wiring diagram, Section 8). If
there is no voltage at P2-1 during cranking, replace the
control board.
tp6092
1. Starter motor
2. Lead 71 (energized during cranking)
3. Starter relay (crank relay)
1 2 3
Figure 5-19 Starter Components
To test the starter relay, check for 12 VDC to the starter
motor during the crank attempt. If there is voltage to the
relay but not to the starter motor, check the connection
between the relay and the starter motor.
If the
connection is good, replace the relay.
Generator sets with serial numbers above 2094977 use
a waterproof starter solenoid. Use service kit GM40989
to replace the starter solenoid on earlier units. See
TT-1437.
If there is voltage to the starter motor but the starter
motor does not crank the engine, refer to the Engine
Service Manual for starter service information. The
generator set engine uses an inertia-drive electric
starter.
5.7 Fuel System
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
WARNING
Fire.
Can cause severe injury or death.
Do not smoke or permit flames or
sparks near fuels or the fuel system.
WARNING
Combustible materials. A fire can cause severe injury or
death.
Generator set engine fuels and fuel vapors are
flammable and explosive. Handle these materials carefully to
minimize the risk of fire or explosion. Equip the compartment
or nearby area with a fully charged fire extinguisher. Select a
fire extinguisher rated ABC or BC for electrical fires or as
recommended by the local fire code or an authorized agency.
Train all personnel on fire extinguisher operation and fire
prevention procedures.