Guardian 4389 Repair Manual page 124

SECTION 5.1
SYSTEM FUNCTIONAL TESTS
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 cir-
cuit breaker).
6. Set the AUTO-OFF-MANUAL switch to AUTO. The sys-
tem 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.
Page 122
PART 5
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 approxi-
mately 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, Section
1.6) 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 con-
troller printed circuit board is ON.
OPERATIONAL TESTS
AND ADJUSTMENTS