Model 2870A Manual p/n 752-638, Rev 20120906
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Operator’s Manual
Enhanced Flight™ Model 2870A
28V Aviation Ground Power Unit (GPU)
NOTE
: This manual is also applicable to the Model 2835A, which is identical in appearance and operation,
except with a maximum continuous output of 35 amperes, instead of 70. If your GPU includes the optional, built-in
BatteryMINDer maintenance-type de-sulfating charger, a separate operator’s manual is provided for that feature.
IMPORTANT DISCLAIMER & OPERATING LIMITATIONS
Audio Authority authorizes this device for use ONLY by aviation professionals, such as licensed
pilots and maintenance technicians, knowledgeable about their aircraft electrical system and batteries.
Aircraft electrical systems vary widely. Many aircraft electrical systems have been altered in the field
from the original OEM configuration and these changes are often poorly documented in the aircraft
records. The operational concepts, recommendations, and instructions presented in this manual are
necessarily general and make assumptions that do not apply to every aircraft, and may not be correct
for your particular aircraft. Incorrect use of this device has the potential to damage the GPU and/or
aircraft components. It is the operator’s responsibility to read completely and fully understand this
manual, plus those sections of the Aircraft Flight Manual and Maintenance Manual that pertain to
their aircraft’s electrical system design, to determine the appropriate use of this, or any, external
power source. If you cannot do this, do not use this product. Instead, consult the airframe
manufacturer or a technician familiar with your specific aircraft type and configuration before
connecting the GPU to your aircraft.
2-Meter
Output Cable
with AN2551
3-pin Plug
100-240V AC
Line Cord
Removable Dual
Cord/Tool Caddies
Large Digital
Volt and Amp
Meters
Provision for Optional BatteryMINDer
Full-time De-Sulfating Charger
