Product Manual

8
STOPPING THE GENSET
Turn off the air conditioner and other large ap-
pliances and let the genset run for two minutes to
cool down. Then press the switch to STOP to stop
the genset.
RESTARTING THE GENSET
See Troubleshooting (Page 21) if the genset shuts
down abnormally.
LOADING THE GENSET
The genset can power AC motors, air conditioners,
AC/DC converters, battery chargers and other ap-
pliances. How much appliance load* can be pow-
ered depends upon the genset power rating. The
genset will shut down or its circuit breakers will trip if
the sum of the loads exceeds genset power. (If the
genset shuts down, the status light will probably dis-
play Fault Code No. 11, 13, 22 or 38. See Trouble-
shooting, Page 21.)
To avoid overloading the genset and causing shut-
downs, compare the sum of the loads of the ap-
pliances that are likely to be used at the same time to
the power rating of the genset. Use Table 1 or the
ratings on the appliances themselves (if so marked)
to obtain the individual appliance loads. It may be
necessary to run fewer appliances at the same
time—the sum of the loads must not be greater
than genset rating.
The genset may shut down due to overload when a
large motor or air conditioner is started or cycles off
and then on again, even though the sum of the loads
is less than genset rating. The reason for this is that
a motor’s startup load is much larger than its running
load. It may be necessary to run fewer ap-
pliances when large motors and air condition-
ers are cycling on and off.
Maximum power decreases as altitude increases
because air density decreases. For every 1000-foot
(305 m) increase in elevation you can expect power
to decrease approximately 3 percent. Table 2
shows the results of typical calculations. It may be
necessary to run fewer appliances at higher alti-
tudes.
TABLE 1. TYPICAL APPLIANCE LOADS
Appliance Load (watts)
Air Conditioner 1400-2000
Battery Charger Up to 2000
DC Converter 300-1200
Refrigerator 600-1000
Microwave Oven 1000-1500
Electric Frying Pan or Wok 1000-1500
Electric Stove Element 350-1000
Electric Water Heater 1000-1500
Electric Iron 500-1200
Electric Hair Dryer 800-1500
Coffee Percolator 550-750
Television 200-600
Radio 50-200
Electric Drill 250-750
Electric Broom 200-500
Electric Blanket 50-200
TABLE 2. POWER VS. ALTITUDE
Elevation
above Mean
Sea Level
Max Genset
Power*
Max Genset
Power*
up to 500 ft
(152 m)
7500 watts
(rated)
8000 watts
(rated)
2500 ft
(762 m)
7050 watts 7520 watts
5500 ft
(1676 m)
6375watts 6800watts
above
5500 ft
(1676 m)
6375watts minus
225 watts ev-
ery1000 ft
(305 m)
6800watts minus
240 watts ev-
ery1000 ft
(305 m)
* This table does not take into account the effect cir-
cuit breakers may have in limiting maximum power.
Commercial Genset Applications
Maximum genset power (nameplate rating) is
7500 watts in an ambient of 85° F (29° C), but only
6000 watts in an ambient of 120° F (50° C)—the
maximum operating temperature. Also, continuous
operation at up to 80 percent of maximum power
(6000 watts) is acceptable.
* Appliance load and genset power are measured in terms of watts (W) or kilowatts (kW), where 1 kilowatt (kW) = 1000 watts (W).