Champion Power Equipment 71531 - Manual (Page 19)

REV 71531-20140424
16
71531 ENGLISH
OPERATION
Never exceed the specified capacity when adding
loads to the generator.
NOTE
Operation using the alternative main jet at
elevations lower than the recommended minimum
altitude can damage the engine. For operation at
lower elevations, the standard main jet must be
used. Operating the engine with the wrong engine
configuration at a given altitude may increase
its emissions and decrease fuel efficiency and
performance.
WARNING
Carburetor
Code
Main Jet Part Number Altitude
P28-3-Z
Standard 47.131017.21.Z
5500 Feet
(1676 Meters)
Altitude 47.131017.21.01.Z
P28-3-H
Standard 47.131017.21.H
Altitude 47.131017.21.01.H
P28-3-Y
Standard 47.131017.21.Y
Altitude 47.131017.21.01.Y
Do Not Overload Generator Cont’d. Operation at High Altitude Cont’d.
NOTE
Observing frost on LPG containers and regulators
is common during operation and normally is not
an indication of a problem. As LPG vaporizes and
travels from the tank to the generator engine it
expands. The amount of frost that forms can be
affected by the size of the container, the amount of
fuel being used, the humidity of the air and other
operating conditions. In unusual situations this
frost may eventually restrict the flow of gas to the
generator resulting in deteriorating performance.
For example, if the tank temperature is reduced
to a very low level then the rate at which the LPG
vaporizes is also reduced and may not provide
sufficient fuel flow to the engine. This is not an
indication of a problem with the generator but
only a problem with the flow of gas from the LPG
container. If generator performance seems to be
deteriorating at the same time that ice formation is
observed on tank valve, hose or regulator then some
actions may be taken to eliminate this symptom.
In these rare situations it can be helpful to reduce
or eliminate the cold fuel system effects by doing
one of the following:
– Exchanging fuel tanks to allow the first tank to
warm up, repeating as necessary
– Placing the LPG container at the end of the
generator near the handle, where engine fan air
flows out from the generator. This air is slightly
heated by flowing over the engine. The container
should not be placed in the path of the muffler
outlet.
– The container can be temporarily warmed by
pouring warm water over the top of the tank.
Operation at High Altitude
The density of air at high altitude is lower than at sea
level. Engine power is reduced as the air mass and air-
fuel ratio decrease. Engine power and generator output
will be reduced approximately 3½% for every 1000
feet of elevation above sea level. This is a natural trend
and cannot be changed by adjusting the engine. At high
altitudes increased exhaust emissions can also result
due to the increased enrichment of the air fuel ratio.
Other high altitude issues can include hard starting,
increased fuel consumption and spark plug fouling.
To alleviate high altitude issues other than the natural
power loss, Champion Power Equipment can provide a
high altitude carburetor main jet. The alternative main
jet and installation instructions can be obtained by
contacting Customer Support. Installation instructions
are also available in the Technical Bulletin area of the
Champion Power Equipment internet site.
The part number and recommended minimum altitude
for the application of the high altitude carburetor main
jet is listed in the table below.
In order to select the correct high altitude main jet
it is necessary to identify the carburetor model. For
this purpose, a code is stamped on the side of the
carburetor. Select the correct main jet part number
corresponding to the carburetor code found on your
particular carburetor.
Power Management
Use the following formula to convert voltage and
amperage to watts:
Volts x Amps = Watts
To prolong the life of your generator and attached
devices, follow these steps to add electrical load:
1. Start the generator with no electrical load attached
2. Allow the engine to run for several minutes to stabilize.
3. Plug in and turn on the first item. It is best to attach
the item with the largest load first.
4. Allow the engine to stabilize.
5. Plug in and turn on the next item.
6. Allow the engine to stabilize.
7. Repeat steps 5-6 for each additional item.