Kohler 12RESV Generator Set

Tools: digital voltmeter, personal computer, SiteTech software

1. Connect PC to controller via USB
2. With generator off, connect multimeter across L1/L2 (AC volts)
3. Start generator set
4. Compare voltmeter reading to controller display
5. Calculate new Genset Calibration Factor Voltage using (Vmeter / Vcontrol) x Fold = Fnew
6. Enter new value into SiteTech and click Apply Changes
7. Verify voltmeter matches controller display
8. Repeat for L2-L3 and L3-L1 if three-phase
9. Press OFF to stop generator set

Tools: digital voltmeter

1. With generator off, connect digital multimeter across L1 and L2, set to AC volts
2. Start generator set with RUN button
3. Navigate to Generator Metering menu, press Select; Volts L1-L2 displayed
4. Press Select; voltage number flashes
5. Use up/down arrows to match voltmeter reading
6. Press Select to confirm
7. Step to Return screen
8. Press OFF to stop generator set

Tools: clamp-on DC current probe or DC current meter

1. Connect DC current probe/clamp meter to measure generator current
2. Start generator with RUN button
3. Adjust system voltage to obtain rated current output with battery bank attached (or use load bank)
4. Trip output breaker
5. Navigate to Generator Metering menu, select Generator Load
6. Press and hold Select for No-Load Calibration; verify breaker open, confirm Yes
7. Close output breaker; verify rated output current, confirm Yes
8. Verify displayed load is correct; recalibrate if necessary
9. Press OFF to stop generator set

1. Press OFF and verify that the generator set is not running.
2. Press and hold the Exercise button until Press Again to Reset OnCue Plus PW is displayed.
3. Release the Exercise button and press it again within 5 seconds.
4. Write down the serial number (S/N) and password.

1. Press OFF to place the controller into OFF mode.
2. Press the down arrow button (RDC) or exercise button (DC) 5 times.
3. Note the four-digit code displayed on the controller; this is the controller password.
4. Write down the password and press OFF to clear the display.

1. Press the controller down arrow button to navigate to the Networking Information menu.
2. Follow the reset password procedure shown in Figure 1-3.
3. Write down the serial number (S/N) and password displayed for 10 seconds.

1. Disconnect all input power for two minutes to allow capacitors to discharge.
2. Remove the battery negative cable or disconnect P1 from the back of the controller.
3. Disconnect the battery charger 120 VAC input power supply or disconnect P5 from the back of the controller.
4. Unplug the USB mini-B connector from the front of the controller if plugged in.
5. Wait two minutes, then reconnect power, hooking up battery power (P1) first.

Tools: Command prompt, Telnet Client

1. Activate Telnet Client on the computer if necessary.
2. Open a command prompt window.
3. Enter telnet devices.kohler.com 5253.
4. Successful connection displays the symbols shown in Figure 3-8.

1. Install the Ethernet option board on the generator set controller. See TT-1566.
2. Connect a network cable from the Ethernet board to your router or modem.

1. Set the controller password before connecting the generator set Ethernet cable to the router.
2. Connect the RJ45 inline connector included in the OnCue Plus kit to the Ethernet cable inside the generator enclosure.
3. Connect one end of the customer-provided network cable to the RJ45 connector.
4. Connect the other end of the network cable to the customer router or modem.

⚠ Accidental starting can cause severe injury or death; disconnect battery cables before working on the generator set, negative lead first.

⚠ Hazardous voltage will cause severe injury or death; disconnect all power sources before opening the enclosure.

⚠ Hot surfaces: disconnect power to the heater and allow it to cool before servicing.

1. Open enclosure roof; locate controller and air cleaner.
2. Turn off the generator set (master switch or controller OFF button, per model).
3. Disconnect AC power to the generator set at the distribution panel breaker.
4. Disconnect the starting battery, negative lead first.
5. Check nameplate model/spec number and locate heater position per Figure 4.
6. Remove the air cleaner cover if needed for access.
7. Disconnect the heating element from the power cord at the plug connector.
8. Insert the heating element into the threaded opening on the engine and tighten.
9. Reconnect the power cord to the heater.
10. Route and connect the power cord per the applicable model wiring option (steps 10-12).
11. Replace the air cleaner cover if it was removed.
12. Affix decal GM22387 onto the air cleaner cover.
13. Reconnect the starting battery, negative lead last.
14. Reconnect AC power by closing the distribution panel breaker.
15. For standby operation, move switch to AUTO and reinstall enclosure panels.

⚠ Accidental starting can cause severe injury or death; disconnect battery cables before working on the generator set, negative lead first.

⚠ Hazardous voltage will cause severe injury or death; disconnect all power sources before opening the enclosure.

⚠ Hot surfaces: install the heater before connecting it to power; disconnect power and allow it to cool before servicing.

1. Open the enclosure roof.
2. Press the OFF button on the generator set controller.
3. Disconnect AC power to the generator set at the distribution panel breaker.
4. Disconnect the starting battery, negative lead first.
5. Locate the carburetor heater per Figure 14; remove side panel or air cleaner cover if needed.
6. Remove and discard the M8 bolt from the carburetor at the heater location.
7. Thread adapter GM91361 into the M8 hole.
8. Insert carburetor heater GM57968 into the adapter and tighten.
9. Connect the extension cord (GM91360 or 3-way GM95628) to the heater cord.
10. Route the cord to the AC receptacle, securing away from throttle linkage and exhaust.
11. Plug the cord into the AC receptacle on the generator bulkhead.
12. Affix decal GM22387 onto the air cleaner cover.
13. Reconnect the starting battery, negative lead last.
14. Reconnect AC power by closing the distribution panel breaker.
15. Press AUTO for standby operation and reinstall enclosure panels.