Generac Power Systems 05176-0 - Manual (Page 12)

10
Figure 2.4 – Battery Cable Connections
NOTE:
The generator is equipped with a battery trickle
charger that is active when the unit is set up for
automatic operation. With the battery installed
and utility power source voltage available to the
transfer switch, the battery receives a trickle
charge while the engine is not running, to prevent
self-discharge. The trickle charger is designed to
help extend the life of the battery by maintain-
ing the battery when the unit is not running. The
trickle charge feature cannot be used to recharge
a discharged battery.
2.3 THE BATTERY
Servicing of the battery is to be performed or super-
vised by personnel knowledgeable of batteries and
the required precautions. Keep unauthorized person-
nel away from batteries.
When replacing the battery, use the following type of
battery: Group 26/26R 12-volt battery with a rating
of 525 cold-cranking amps minimum at -17.8º C (0º
F) minimum. When using a maintenance-free battery,
it is not necessary to check the specific gravity or
electrolyte level. Have these procedures performed
at the intervals specified in the “Service Schedule.” A
negative ground system is used. Battery connections
are shown on the wiring diagrams. Make sure the
battery is correctly connected and terminals are tight.
Observe battery polarity when connecting the battery
to the generator set.
3.1 BEFORE INITIAL START-UP
Before starting, complete the following:
1. Set the generator’s main circuit breaker to its
OFF (or open) position.
2. Set the generator's AUTO/OFF/MANUAL switch to
the OFF position.
3. Turn OFF the utility power supply to the transfer
switch using the means provided (such as the
utility main line circuit breaker).
4. Check the engine crankcase oil level and, if neces-
sary, fill to the dipstick FULL mark with the rec-
ommended oil. Do not fill above the FULL mark.
5. Check the fuel supply. Gaseous fuel lines must
have been properly purged and leak tested in
accordance with applicable fuel-gas codes. All
fuel shutoff valves in the fuel supply lines must
be open.

Never operate the engine with the oil level
below the “Add” mark on the dipstick. Doing
this could damage the engine.
3.2 CHECK TRANSFER SWITCH
OPERATION
Refer to the "Manual Operation" section of the owner’s
manual for manual operation procedures.
DANGER

Do not attempt manual transfer switch opera-
tion until all power voltage supplies to the
transfer switch have been positively turned off.
Failure to turn off all power voltage supplies
will result in extremely hazardous and possibly
fatal electrical shock.
3.3 ELECTRICAL CHECKS
Complete electrical checks as follows:
1. Turn on the utility power supply to the transfer
switch using the means provided (such as a utility
main line circuit breaker).
DANGER

The transfer switch is now electrically “hot.”
Contact with “hot” parts will result in extremely
hazardous and possibly fatal electrical shock.
Proceed with caution.
2. Use an accurate AC voltmeter to check utility
power source voltage across terminals N1 and
N2. Nominal line-to-line voltage should be 240
volts AC.
Section 3 — Post Installation Start-up and Adjustments
Air-cooled 15 kW Generators