Section 3 — Operation
3.5SETTING THE EXERCISE TIMER
This generator is equipped with an exercise timer. Once it is set, the generator will start and exercise once every seven days, on the day of the week and at the time of day the following sequence is completed. During this exercise period, the unit runs for approx- imately 12 minutes and then shuts down. Transfer of loads to the generator output does not occur during the exercise cycle.
A switch on the control panel (see Figure 3.1) per- mits selection of the day and time for the system to exercise. At the chosen time, perform the following sequence to select the desired day and time of day the system will exercise.
Place the AUTO/OFF/MANUAL switch in the AUTO position. Push and hold the “Set Exercise Time” switch to the ON position for approximately three seconds and release. All five red LED’s will flash for 10 seconds. The unit will perform the standard exer- cise sequence, then shut down. The generator will now exercise every seven days at the time set.
NOTE:
The exerciser will only work in the AUTO mode and will not work unless this procedure is per- formed. The exerciser will need to be reset every time the
3.6PROTECTION SYSTEMS
3.6.1 LOW OIL PRESSURE SWITCH
This switch (Figure 3.2) has normally closed con- tacts that are held open by engine oil pressure dur- ing cranking and operating. Should oil pressure drop below the 8 psi range, switch contacts close, and the engine shuts down. The unit should not be restarted until oil is added. The AUTO/OFF/MANUAL switch must then be turned to OFF and then back to AUTO.
3.6.2 HIGH TEMPERATURE SWITCH
This switch’s contacts (Figure 3.3) close if the tem- perature should exceed approximately 132º C (270º F), initiating an engine shutdown. The generator will automatically restart and the LED on the generator control panel will reset once the temperature has returned to a safe operating level.
Figure 3.2 – Low Oil Pressure and
High Temperature Switches
3.6.3 OVERCRANK
This feature prevents the generator from damaging itself when it continually attempts to start and anoth- er problem, such as no fuel supply, prevents it from starting. The unit will crank and rest for a preset time limit. Then, it will stop cranking, and the LED on the generator control panel will light indicating an overcrank failure. The AUTO/OFF/MANUAL switch will need to be set to OFF and then back to AUTO to reset the generator control board.
NOTE:
If the fault is not repaired, the overcrank feature will continue to activate.
3.6.3.1 Approximate Crank Cycle Times
•15 seconds ON
•7 seconds OFF
•7 seconds ON
•7 seconds OFF
•Repeat for 45 seconds Approximately 90 seconds total
3.6.4 OVERSPEED
This feature protects the generator from damage by shutting it down if it happens to run faster than the preset limit. This protection also prevents the gen- erator from supplying an output that could poten- tially damage appliances connected to the generator circuit. Contact the nearest Authorized Dealer if this failure occurs.
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