Guardian 4721, Repair Manual

Page: 20 / 115

PART 1
Page 16
GENERAL INFORMATION
SECTION 1.6
OPERATING INSTRUCTIONS
as follows:
1.On the generator panel, set the AUTO-OFF-MANU-
AL switch to OFF.
2.On the generator, set the main line circuit breaker
to it’s OFF or "Open" position.
3.Turn OFF the utility power supply to the transfer
switch, using whatever means provided (such as a
utility-source line circuit breaker).
4.Manually actuate the transfer switch main contacts
to their “Standby” position, i.e., loads connected to
the “Standby” power source side.
5.On the generator panel, set the AUTO-OFF-MANU-
AL switch to MANUAL. The engine should crank
and start.
6.Let the engine warm up and stabilize for a minute
or two at no-load.
7.Set the generator’s main line circuit breaker to its
ON or "Closed" position. The generator now powers
the electrical loads.
MANUAL SHUTDOWN AND RETRANSFER
BACK TO "UTILITY"
To shut the generator down and retransfer electrical
loads back to the "Utility" position, proceed as follows:
1.Set the generator’s main line circuit breaker to its
OFF or "Open" position.
2.Let the generator run at no-load for a few minutes,
to cool.
3.Set the generator’s AUTO-OFF-MANUAL switch to
OFF. Wait for the engine to come to a complete
stop.
4.Turn OFF the “Utility” power supply to the transfer
switch using whatever means provided (such as a
“Utility” source main line circuit breaker)
5.Manually actuate the prepackaged transfer switch
to its “Utility” power source side, i.e., “Load” con-
nected to the “Utility” source.
6.Turn ON the “Utility” power supply to the transfer
switch, using whatever means provided.
7.Set the generator’s AUTO-OFF-MANUAL switch to
AUTO.
THE SET EXERCISE TIME SWITCH
The prepackaged home standby generator will start
and exercise once every seven (7) days, on a day
and at a time of day selected by the owner or opera-
tor. The set exercise time switch is provided to select
the day and time of day for system exercise.
See Part 5, Section 5.2 ("The 7-Day Exercise Cycle")
for instructions on how to set exercise time.
DANGER: THE GENERATOR WILL CRANK
AND START WHEN THE SET EXERCISE
TIME SWITCH IS SET TO "ON". DO NOT
ACTUATE THE SWITCH TO "ON" UNTIL
AFTER YOU HAVE READ THE INSTRUC-
TIONS IN SECTION 1.6.
!
FUSE
15-A
AGC
FAULT
INDICATOR
AUTO
OFF
ON
SET
EXERCISE
TIME
MANUAL
HOURMETER
Figure 1. Control Panel