Carrier ASPAS1CCA012, ASPAS1CCA015 Engine Governor Adjustment, 2 12KW and 15KW, V-TWIN Engines

Section 1 — Post Installation Start-up and Adjustments

Carrier Air-cooled 7 kW, 12 kW and 15 kW Generators

9.Reverse procedure steps 1-5 to reinstall demand regulator.

10.Reverse the procedure to convert back to natural gas.

◆1.7.2 12KW AND 15KW, V-TWIN ENGINES

To reconfigure the fuel system from NG to LP, follow these steps:

14.It may be necessary to make minor adjustments to the preset adjustment screw settings to achieve maximum power, particularly at higher altitudes. If experiencing problems with the unit producing maximum power, follow the procedure in Section 1.6 (Adjusting the Fuel Regulator).

Figure 1.4 - Demand Regulator

NOTE:

The primary regulator for the propane supply is NOT INCLUDED with the generator. A fuel pressure of 11 to 14 inches of water column (0.4 to 0.5 psi) to the fuel inlet of the generator MUST BE SUPPLIED.

1.	Turn off the gas supply. (if connected)
2.	Open the top and remove the front panel.
3.	Remove the battery. (if installed)
4.	Remove the engine air in baffle located on the left-
	hand side of the battery compartment. Two M6
	screws are located on top of the baffle and two M6
	screws are located on the inside of the baffle towards

IDLE CIRCUIT PORT

	OUTLET PORTS
	FUEL HOSE
	BRASS HOSE
	FITTING
U	BRASS HOSE
T	FITTING
1
	TAP
	1/8 NPT
	ADJUSTER
	SCREWS

SMALL

FUEL JET

REGULATOR HOUSING PORT

	the back.
5.	Remove the small hose clamp and hose from the fuel
	regulator. It may be necessary to pry the hose off of
	the brass fitting using a screwdriver to gently lift up
	the hose edge.
6.	Remove the small brass hose fitting from the
	regulator casting.
7.	Place the small fuel jet, thread side first, into the
	threaded hole originally occupied by the brass hose
	fitting (Figure 1.4).
8.	Using a short No. 2 Phillips screw driver, thread the
	small fuel jet into the regulator casting. Do not over
	tighten.
9.	Apply thread sealant to the threads of the hose fitting
	and replace it into the regulator body.
10.	Re-attach the small hose and hose clamp and tighten
	as necessary.
11.	Replace the engine air in baffle using the four M6
	screws.
12.	Identify both brass adjustment screws on the
	regulator.
	NOTE:

One adjustment screw can be accessed from the front of the unit and the second can be accessed from the back of the unit enclosure by removing the plastic hole plug. The screw can be turned with a long flat blade screwdriver.

13.To adjust the system to run on LP fuel, turn BOTH adjuster screws 1/2 TURN CLOCKWISE. The system should now be set for maximum power and best performance. DO NOT, UNDER ANY

CIRCUMSTANCES, REMOVE THE SET PINS FROM THE REGULATOR HOUSING. THIS WILL VOID THE WARRANTY.

1.8ENGINE GOVERNOR ADJUSTMENT

If both AC frequency and voltage are correspondingly high or low, adjust the engine governor as follows:

◆1.8.1 7 KW UNITS

1.Loosen the governor clamp bolt (Figures 1.5).

2.Hold the governor lever at its wide open throttle position, and rotate the governor shaft clockwise as far as it will go. Then, tighten the governor lever clamp bolt to 70 inch-pounds (8 N-m).

3.Start the generator; let it stabilize and warm up at no- load.

4.Connect a frequency meter (or high quality multi- meter set to the frequency mode) across the generators AC output leads.

5.Turn the speed adjust nut to obtain a frequency reading of 63 Hertz.

Figure 1.5 — Engine Governor Adjustment

Single Cylinder Engines

GOVERNOR

SHAFT

GOVERNOR	ADJUST
CLAMP
	SCREW
BOLT

Carrier 7