Kohler EKOZD Series Service page 195

This test simulates the normal operation of the
components when the alternator is running.
WARNING
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death. Electrocution is possible
whenever electricity is present. Ensure you comply with all
applicable codes and standards.
generator set, transfer switch, and related equipment and
electrical circuits. Turn off the main circuit breakers of all
power sources before servicing the equipment. Never contact
electrical leads or appliances when standing in water or on wet
ground because these conditions increase the risk of
electrocution.
1. Connect components as illustrated in Figure 11-7,
Test A.
Note: Connect 120 VAC power source to AC1 and
AC2.
Temporarily, install the five 6 mm screws into the
AC1, AC2, AC3, F+, and F- holes on the activator
board.
Connections to the FRX activator board are made
to the threaded screws located on the underside of
the board. Secure all connections with terminal
nuts to ensure good electrical contact with
threaded screws during testing. Do not exceed
1.3 Nm (12 in. lb.) when tightening the terminal
nuts. Place FRX activator board on a
non-conductive surface when performing the test.
2. With the cord switch in the OFF position, plug in the
electrical cord.
3. Turn the cord switch to the ON position.
TP-6953 7/19
Moving parts.
Electrically ground the
FN
FP
1. Flashlight
2. FRX activator board
3. Fuse (1 amp)
Figure 11-7 FRX Activator Board Test A
4. Apply light source directly to the photo transistor
located in the center of the FRX activator board.
Shield the photo transistor from all other sources of
light during this test.
If the FRX activator board is functional, the test
fixture light bulb will light when the external light
source is applied to the photo transistor. Remove
the light source; the fixture light bulb should go out.
If the test fixture light bulb does not light or is lit prior
to receiving external light source, the FRX activator
board is non-functional.
5. Turn the cord switch to the OFF position and
unplug the electrical cord.
6. Connect components as illustrated in Figure 11-8,
Test B.
Note: Connect 120 VAC power source to AC1 and
AC3.
Section 11 Alternator Component Testing and Adjustment
1
2
AC1
3
AC2
4
AC3
5
6
GM98939-1-/TP- 6783-3
4. Switch DPST
5. 120 volts AC plug
6. 120 volt/100 watt lamp
195