Section 3 — Operation
3.1 | 3.2.3 “MANUAL” POSITION |
Once the unit has been installed and all electrical checks have been made, it is strongly recommended that the following
1. | Set the generator’s Auto/Off/Manual switch to |
| AUTO. |
2. | Turn OFF the utility power supply to the transfer |
Set the switch to MANUAL to crank and start the engine. Transfer to standby power will not occur unless there is a utility failure.
Figure 3.1 – Generator Control Panel
| switch using the means provided (such as a utili- |
| ty main line circuit breaker). |
3. | The unit will start, and the transfer switch will |
| transfer to standby. |
4. | Using the transfer switch’s |
| load center, turn on circuits to load the generator |
| to approximately 25% rated load and run the unit |
| for one hour. |
5. | Run the unit for one hour at 50% rated load. |
6. | Run the unit for one hour at 75% rated load. |
7. | Run the unit for one hour at 100% rated load. |
FUSE |
|
5A | OFF MAN. |
AUTO | |
FUSE |
|
15A | SET |
| EXERCISE |
| TIME |
L o c a t e y o u r n e a r e s t 
d e a le r a t :
POWER SYSTEMS, INC.
SYSTEM SET
LOW OIL
HIGH TEMP.
OVER SPEED
OVER CRANK
F L A S H IN G G R E E N L E D =
N O U T IL IT Y S E N S E 4 F L A S H IN G R E D L E D S =
E X E R C IS E R N O T S E T
8. | Turn ON the utility power supply to the transfer |
| switch, which will allow the transfer switch to |
| transfer back to utility power. The unit will con- |
| tinue to run for one minute and then shut down. |
9. | Allow the unit to cool. |
10. | Drain the oil and remove the oil filter. Replace the |
| oil filter according to Section 4.4, “Changing the |
| Oil Filter” (Page 16). Replace the oil with synthet- |
| ic oil as recommended in Section 4.3, “Changing |
| the Engine Oil” (Page 15). |
11. | The generator is now ready for service. |
With the switch set to AUTO, the engine may
!crank and start at any time without warning. Such automatic starting normally occurs when utility power source voltage drops below a pre- set level or during the normal exercise cycle. To prevent possible injury that might be caused by such sudden starts, always set the switch to OFF and remove the fuse before working on or around the generator or transfer switch. Then, place a “Do Not Operate” tag on the generator panel and on the transfer switch.
3.2USING THE AUTO/OFF/MANUAL SWITCH (FIGURE 3.1)
3.2.1 “AUTO” POSITION
Selecting this switch position activates fully automatic system operation. It also allows you to start and exercise the engine every seven days with the setting of the exer- cise timer (see Section 3.6, Page 14). This position also is used for remote starting, when it is set up.
3.2.2 “OFF” POSITION
This switch position shuts down the engine. This position also prevents automatic operation.
3.3AUTOMATIC TRANSFER
OPERATION
To select automatic operation, do the following:
1.Make sure the transfer switch main contacts are set to their “Utility” position, i.e., loads connected to the utility power source (Figure 3.2, Page 14).
2.Be sure that normal utility power source voltage is available to transfer switch terminal lugs N1 and N2.
3.Set the generator’s Auto/Off/Manual switch to AUTO.
4.Set the generator’s main circuit breaker to its ON (or closed) position.
With the preceding steps complete, the generator will start automatically when utility source voltage drops below a preset level. After the unit starts, loads are transferred to the standby power source. Refer to “Sequence of Automatic Operation” (Page 14).
Generac® Power Systems, Inc. 13
