To Select Automatic Operation; Manual Operation - Generac Power Systems 7 kW NG Repair Manual

Section 1.6
Operating Instructions
"ENTER" key to avoid setting up the exercise time. This
will ensure that when the customer powers up the unit, the
controller will prompt the consumer to enter the exercise
time.
Low Speed Exercise
On the 17 and 20kW Generators this feature, when enabled,
allows the Generator to exercise at 2,400 rpm. Low speed
exercise can be disabled from the "EDIT" menu. See Section
4.1 "Menu Navigation".
Display Interface Menus
The LCD display is as detailed below
• The "Home" page is the default page and will display if
no keys are pressed for 30 seconds. This page normally
shows the current status and the current time and date. It
will also display the highest priority active Alarm and/or
Warning along with the backlight flashing when one of these
events occurs. In the case of multiple Alarms or Warnings,
the controller will only display the first message. To clear an
Alarm or Warning, see Section 4.2 "Protection Systems."
• The display backlight is normally off. If the user presses any
key, the backlight will come on automatically and remain on
for 30 seconds after the last key is pressed.
• The "Main Menu" page will allow the user to navigate to all
other pages or sub-menus by using the Left/Right and Enter
keys. Each press of the Escape key takes you back to the
previous menu until the main menu is reached. This page
displays the following options: HISTORY, STATUS, EDIT, and
DEBUG. See Section 4.1 - "Menu System."

TO SELECT AUTOMATIC OPERATION

The following procedure applies only to those installations
which utilize an air-cooled Generator in conjunction with a
transfer switch. Residential transfer switches do not have
intelligent circuits of their own. PCB logic in the controller
controls the automatic operation of the transfer switch and the
Generator.
To select automatic operation when a transfer switch is installed
along with a home standby Generator, the procedure is as
follows.
1. Ensure the CONTACTOR in the transfer switch is in the
"Utility" position. If needed, manually actuate the switch
contacts to the "Utility" position. See Section 5.1 for
specific instructions.
2. Ensure Utility voltage is available to the UTILITY terminals
N1 and N2.
3. Actuate the Generator main line circuit breaker (MLCB) to
its "Closed" position.
4. Set the Generator AUTO-OFF-MANUAL switch to the AUTO
position.
Following the procedure of Steps 1 through 4, a dropout in
Utility voltage below a preset level will result in automatic
Generator cranking and start-up. Following startup, the transfer
switch will actuate to the "Standby" position.
Page 26
PART 1

MANUAL OPERATION

Transfer to "Standby" and Manual Startup
To transfer electrical loads to the Generator and to start the
Generator manually, the procedure is as follows:
1. On the Generator, set the AUTO-OFF-MANUAL switch to
the OFF position.
2. On the Generator, set the main line circuit breaker (MLCB)
to the "Open" Position.
3. Locate a means of Utility disconnect and set it to the OFF
position.
4. Manually actuate the CONTACTOR to the "Standby"
position. See Section 5.1 for specific instructions.
5. On the Generator, set the AUTO-OFF-MANUAL switch to
the MANUAL position.

Engine will crank and start!
6. Let the engine warm up and stabilize for a minute or two
at no-load. Set the Generators MLCB to the "Closed"
position. Generator voltage is available to the transferred
electrical loads.
Retransfer Back to "Utility" and Manual Shutdown
To shutdown the Generator and retransfer electrical loads back
to the "Utility" position, the procedure is as follows:
1. Set the Generators MLCB to its "Open" position.
2. Allow the Generator to run at no-load for several minutes
to cool.
3. Set the Generators AUTO-OFF-MANUAL switch to the OFF
position.
4. Locate a means of Utility disconnect and set it to the OFF
position.
5. Manually actuate the CONTACTOR to the "Utility" position.
6. Restore Utility voltage to the transfer switch, by the means
that was utilized in Step 4.
7. Set the Generator AUTO-OFF-MANUAL switch to AUTO.
With the Generator in AUTO, a dropout in Utility voltage below
a preset level will result in automatic Generator cranking and
start-up. Following startup, the transfer switch will actuate to
the "Standby" position.
GENERAL INFORMATION