High-Altitude Operation
18 www.honeywellgenerators.com HW7000EH Portable Electrical Generator Owner’s Manual
High-Altitude Operation
At high altitudes, standard carburetor air-fuel mixture will
be excessively rich. Performance will decrease and fuel
consumption will increase.
High-altitude performance can be improved by installing a
smaller diameter main fuel jet in the carburetor and then
readjusting the pilot screw. If you always operate the
engine at altitudes higher than 5000 feet (1500 meters)
above sea level, have an authorized generator dealer per-
form this carburetor modification.
Even with suitable carburetor jetting, engine horsepower
will decrease approximately 3.5% for each 1000 foot (300
meter) increase in altitude above sea level. The effect of
altitude on horsepower will be greater than this if no car-
buretor modification is made.
Powering Appliances
In this manual, the term “appliance” refers to any electri-
cal device that can be connected to generator for power.
Rules for Powering Appliances
• Plan carefully: Before using the generator to power
appliances, take time to add power ratings (wattage)
of each appliance and verify that total wattage does
not exceed rated output of generator. Power rating
information can usually be found on an appliance’s
product label, stamped inside, or on the back of the
appliance. See Table 1 for a listing of average appli-
ance wattage requirements.
• NEVER overload: Circuit breakers will stop the flow
of electricity between generator and appliance if the
generator is overloaded. This will be indicated by a
“tripped” breaker. If the master circuit breaker is
tripped, reduce the load on the Twist-Lock (NEMA
L14-30R) receptacle and reset the breaker. If a duplex
circuit breaker is tripped, reduce the load on the
duplex (NEMA 5-20R) receptacles above the breaker,
wait several minutes for the breaker to cool, and reset
the breaker.
• Pay attention to appliance operation: If appliance
begins to operate abnormally, becomes sluggish, or
stops suddenly, turn it OFF immediately. Disconnect
appliance and determine whether problem is appli-
ance, or if rated load capacity of generator has been
exceeded.
• Use suitable extension cords: If using an extension
cord to connect appliance to generator, use only UL-
listed, three-prong extension cords that are intended
for outdoor use. Be sure extension cord is proper size
(wire-gauge) to handle electric load that will be
plugged into it.
NOTICE
If the engine is jetted for high-altitude and is used at a lower
altitude, it will run a lean air-fuel mixture that results in
reduced performance, possible over-heating, and possible
serious engine damage.
NOTICE
NEVER start generator with electrical appliances plugged in
and turned on.
Faulty appliances and power cords can result in elec-
trical shock.
• Before attempting to power an appliance, be sure gen-
erator has been properly grounded, and the appliance
and power cord are in good working order.
• NEVER use generator for any purpose other than its
intended use.
• NEVER parallel connect generators or lengthen the
exhaust pipe.
• NEVER connect generator directly to any household
receptacle using a power cord with male plugs at both
ends.
Medical and Life Support Uses
• In case of emergency, call 911 immediately.
• NEVER use this product to power life support devices
or life support appliances.
• NEVER use this product to power medical devices or
medical appliances.
• Inform your electricity provider immediately if you or
anyone in your household depends on electrical equip-
ment to live.
• Inform your electrical provider immediately if a loss of
power would cause you or anyone in your household to
experience a medical emergency.
NEVER run power cords under carpet, rugs, or other materi-
als where heat might build up or cord damage may go unno-
ticed.
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