Section 2 — Post Installation
Guardian
3. Turn on appliances, lights, pumps, etc., that are on the emergency circuits in an attempt to fully load the generator. Be cautious not to overload the generator. Use the following chart as a guide:
| Unit | 120 Volts | 240 Volts |
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| 7 kW | 50.0 amps | 25.0 amps |
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| 12 kW | 100.0 amps | 50.0 amps |
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| 15 kW | 108.3 amps | 54.1 amps |
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4. When full load has been achieved. Connect a fre- quency meter to the output lugs of the generator’s main line circuit breaker.
5. The fuel regulator is fitted with one (7 kW), or two (12 & 15 kW) adjustment screws. While watching the frequency meter, slowly turn the adjustment screws clockwise or counterclockwise one at a time until the highest frequency is read on the meter. Only limited adjustment is available between the set pins (7 kW only). Under no cir- cumstances should any of the pins be removed (Figures 2.1 and 2.2).
Figure 2.1 — Dual Fuel Regulators
7.Turn utility power to the main distribution panel back on. This can be done by switching the serv- ice main breaker to the on or closed position. Allow the generator to shut down.
Do not make any unnecessary adjustments.
!Factory settings are correct for most applica- tions. However, when making adjustments, be careful to avoid overspeeding the engine.
If this procedure or equipment are not available to you, locate the Generac Guardian Dealer nearest you and they can perform the adjustments.
NOTE:
A service fee may be charged for this adjustment.
2.7ENGINE GOVERNOR ADJUSTMENT
If both AC frequency and voltage are correspondingly high or low, adjust the engine governor as follows:
◆ | 2.7.1 7 KW UNITS |
1. | Loosen the governor clamp bolt (Figures 2.3 on |
990
Adjustment |
Screw |
(Both sides)
410
Adjustment | Set | |
Screw | ||
Pins | ||
(One Side | ||
| ||
Only) |
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| page 13). |
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 |
3. | Start the generator; let it stabilize and warm up |
| at |
4. | Connect a frequency meter across the generators |
| AC output leads. |
5. | Turn the speed adjust nut to obtain a frequency |
| reading of 63 Hz. |
6. | When frequency is correct at no load, check the |
6.When the highest frequency is reached maximum power has been set. From this point turn both adjustment screws 1/4 turn counterclockwise. The regulator is now set.
Figure 2.2 — Placement of Regulator
AC voltage reading. If voltage is incorrect, the volt- |
age regulator may require adjustment. |
Figure 2.3 — Engine Governor Adjustment
Idle Spring
Governor
Shaft
(Rotate
Clockwise)
Adjustment Screw | Governor Clamp Bolt | No Load Idle | |
Adjustment Screw | |||
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12 Generac® Power Systems, Inc. |
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