Operation Tests - Kohler 15RYG Installation Manual

10. Allow the generator set to run until the generator
set reaches normal operating temperature. The
time required to
temperature depends primarily on the ambient
temperature and the size of the engine.
11. With the generator set at normal operating
temperature, apply 90%--100% of rated load. If a
load bank is not available, apply a load at least
comparable to what is generally connected to the
generator set.
12. Adjust the fuel mixture adjustment screw (on the
mixer, see Figure 3-13) to obtain a full load oxygen
sensor voltage reading of 2.5 ×±0.10 VDC (or a
lambda ) value of approximately 1.0 as indicated
in the instructions provided with oxygen sensor kit
GM58035).
If the oxygen sensor voltage reading is too low with
the fuel mixture adjustment in the richest position
(turned in clockwise), turn the fuel regulator
adjustment screw clockwise and readjust the fuel
mixture adjustment screw.
If the oxygen sensor voltage reading is too high
with the fuel mixture adjustment in the leanest
position (turned out counterclockwise), turn the
fuel regulator adjustment screw counterclockwise
and readjust the fuel mixture adjustment screw.
1. Fuel mixture adjustment screw (full load)
2. Idle adjustment screw
Figure 3-13 Fuel Mixture Adjustment Screw Location
13. Disconnect the load.
14. Adjust the idle screw (see Figure 3-13) to obtain a
no-load oxygen sensor voltage reading of
2.5 ±0.10 VDC.
TP-6329 8/07
reach normal operating
1
2
15. Repeat steps 11 through 14 to verify the settings.
16. Place the generator set master switch in the OFF
position to stop generator set.
17. Disconnect the generator set engine starting
battery(ies), negative (--) lead first.
18. Allow the generator set exhaust system to cool.
Disconnect and remove the oxygen sensor as
instructed in SB-634.
19. Reconnect the generator set engine starting
battery, negative (--) lead last.
20. Reconnect power to battery charger, if equipped.

3.9 Operation Tests

Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
1. Check the items in the Prestart Checklist in the
generator set Operation Manual, TP-6197.
2. Move the generator set master switch to the RUN
position to start the generator set.
3. Use a digital voltmeter (DVM) to check the output
voltage from the generator set.
adjustments are required, refer to Section 5.4 for
instructions to use the ADC 2100 voltage
adjustment menu.
4. Perform voltage checks as described in the ATS
Operation and Installation manual. Close the main
circuit breaker on the main distribution panel when
instructed to connect power in the test procedure.
5. Test the system operation as described in the ATS
Operation and Installation manual.
tp6329
6. Set the exerciser on the transfer switch. Refer to
the instructions in the ATS Operation and
Installation manual.
7. Verify that the generator set master switch is in the
AUTO position.
8. Verify that all guards and enclosures are in place.
WARNING
Moving parts.
If voltage
Section 3 Installation Instructions 31