Guardian Technologies 4758 Checking Automatic Operation, Setting The Exercise Timer, Section

SECTION 5.1

SYSTEM FUNCTIONAL TESTS

OPERATIONAL TESTS AND ADJUSTMENTS

PART 5

and T2. Apply an electrical load equal to the full rated wattage/amperage capacity of the installed generator.

10.Connect an accurate AC voltmeter and a frequency meter across terminal lugs E1 and E2. Voltage should be greater than 230 volts; frequency should be greater than 58 Hertz.

11.Let the generator run at full rated load for 20-30 minutes. Listen for unusual noises, vibration or other indications of abnormal operation. Check for oil leaks, evidence of overheating, etc.

12.When testing under load is complete, turn OFF electrical loads.

13.Set the generator main circuit breaker to its OFF (or open) position.

14.Let the engine run at no-load for a few minutes.

15.Set the AUTO-OFF-MANUAL switch to OFF. The engine should shut down.

CHECKING AUTOMATIC OPERATION

To check the system for proper automatic operation, proceed as follows:

1.Set generator main circuit breaker to its OFF (or open) position.

2.Check that the AUTO-OFF-MANUAL switch is set to OFF.

3.Turn off the utility power supply to the transfer switch, using means provided (such as a utility main line circuit breaker).

4.Manually set the transfer switch to the UTILITY position, i.e., load terminals connected to the utility power source side.

5.Turn ON the utility power supply to the transfer switch, using the means provided (such as a utility main line circuit breaker).

6.Set the AUTO-OFF-MANUAL switch to AUTO. The system is now ready for automatic operation.

7.Turn OFF the utility power supply to the transfer switch.

With the AUTO-OFF-MANUAL switch at AUTO, the engine should crank and start when the utility source power is turned off. After starting, the transfer switch should connect load circuits to the STANDBY side. Let the system go through its entire automatic

sequence of operation.

With the generator running and loads powered by generator AC output, turn ON the utility power supply to the transfer switch. The following should occur:

❏After about six seconds, the switch should transfer loads back to the utility power source.

❏About one minute after retransfer, the engine should shut down.

SETTING THE EXERCISE TIMER

Your 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 you complete the following sequence. During this exercise period, the unit runs for approximately 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 1, Page 1.6-1) allows you to select the day and time for system exercise. To select the desired day and time of day, you must perform the following sequence at that time.

1.Verify that the AUTO-OFF-MANUAL switch is set to AUTO.

2.Hold down the set timer switch until the generator starts (approximately 10 seconds) and then release.

3.The generator will start and run for approximately 12 minutes and then shut down on its own. The exerciser will then be set to run at that time of day every week.

NOTE: The exerciser will only work in the AUTO mode and will not work unless this procedure is performed. The exerciser will need to be reset every time the 12 volt battery is disconnected and then reconnected. The exerciser WILL NOT work if dip switch 2 (REMOTE NOT AUTO) on the controller printed circuit board is “ON.”

Page 5.1-3