Generac Power Systems Guardian Ultra Source 004451-1, Owner'S Manual, Page: 14 / 24

12
Section 3 — Maintenance
Portable Generator System
IMPORTANT: Do not overload the generator. Also, do not overload
individual panel receptacles. These outlets are protected against
overload with push-to-reset-type circuit breakers. If amperage
rating of any circuit breaker is exceeded, that breaker opens and
electrical output to that receptacle is lost. Read “Don’t Overload
the Generator” on page 9 carefully.
2.9 AUTOMATIC IDLE CONTROL
This feature is designed to greatly improve fuel economy. When
this switch is turned “On” , the engine will only run at its normal
fast governed engine speed when electrical load is connected.
When the load is removed, the engine will run at a reduced speed
of 2100 RPM. With the switch “Off” , the engine runs at the normal
fast engine speed all the time. Always have the switch OFF when
starting and stopping the engine.
2.10 COLD WEATHER OPERATION/DE-ICER
Under certain weather conditions (temperatures below 40° F (4°
C) and a high dew point), the engine may experience icing of the
carburetor and/or the crankcase breather system. To eliminate
this problem, this generator engine is fitted with a winter/summer
valve. this directs hot air into the carburetor during cold weather
operation. Always make sure the winter/summer valve is in the
correct location relative to the weather conditions.
2.11 LOW OIL PRESSURE SHUTDOWN SYSTEM
The engine is equipped with a low oil pressure sensor that shuts
down the engine automatically when the oil pressure drops below
10 psi. If the engine shuts down by itself and the fuel tank has
enough gasoline, check engine oil level.
2.11.1 INITIAL START-UP
A delay built into the low oil shutdown system allows oil pressure
to build during starting. The delay allows the engine to run for
about 10 seconds before sensing oil pressure.
2.11.2 SENSING LOW OIL PRESSURE
If the system senses low oil pressure during operation, the engine
shuts down.
2.11.3 RESTARTING
If you try to restart the engine within 10 seconds after it shuts
down, the engine may NOT start. The system needs 5 to 10
seconds to reset.
If you do restart the engine after such a shutdown and have
not corrected the low oil pressure, the engine runs for about 10
seconds as described above and then stops.
2.12 CHARGING A BATTERY
DANGER

Storage batteries give off explosive hydrogen gas while
recharging. An explosive mixture will remain around the
battery for a long time after it has been charged. The
slightest spark can ignite the hydrogen and cause an
explosion. Such an explosion can shatter the battery and
cause blindness or other serious injury.
DANGER

Do not permit smoking, open flame, sparks or any other
source of heat around a battery. Wear protective goggles,
rubber apron and rubber gloves when working around a
battery. Battery electrolyte fluid is an extremely caustic
sulfuric acid solution that can cause severe burns. If spill
occurs flush area with clear water immediately.
Your generator has the capability of recharging a discharged 12
Volt automotive or utility style storage battery. Do not use the unit
to charge any 6 Volt batteries. Do not use the unit to crank an
engine having a discharged battery.
To recharge 12 Volt batteries, proceed as follows:
Check fluid level in all battery cells. If necessary, add ONLY •
distilled water to cover separators in battery cells. Do not use
tap water.
If the battery is equipped with vent caps, make sure they are •
installed and are tight.
If necessary, clean battery terminals. •
Connect battery charge cable connector plug to panel receptacle •
identified by the words "12-VOLT D.C."
Connect battery charge cable clamp with red handle to the •
positive (+) battery terminal.
Connect battery charge cable clamp with black handle to the •
negative (-) battery terminal.
Start engine. Let the engine run while battery recharges. Engine •
idle control switch must be in off position for battery charging.
When battery has charged, shut down engine. •
NOTICE:
Use an automotive hydrometer to test battery state of charge and
condition. Follow the hydrometer manufacturer's instructions
carefully. Generally, a battery is considered to be at 100% state
of charge when specific gravity of its fluid (as measured by
hydrometer) is 1.260 or higher.