Best Tugs Echo 12, User Manual

11

Power Options

JumpStart

: Provides High 

cold-cranking amps to assist in start-
ing your engine (12 Vdc and 24 Vdc).  
This option uses power from your 
tug’s batteries to assist your aircraft’s 
batteries when starting your plane.  
Note: Even when the tug is off, the 
JumpStart panel is live! (Although 
the readouts won’t show until the 
tug is on.)

GPU: 

The Ground Power Unit is 

used to power your avionics and 
other lower power demand systems 
in your aircraft from the standard 
110 Vac wall connection. You have 
28.5 Vdc at 25/50 Amps. Note: Do 

not use the GPU to power air con-
ditioning or pitot tubes. Warning: 
battery damage is possible—the GPU 
should not be used to charge either 
the tugs or the aircraft’s batteries! 
 

Jum Boost:

 Press the 

silver button to the right of the 
JumpStart JumpStart panel, and the 
tug gives you thirty minutes (from 
the time you pushed the button.) 
with over 28 Volts from the GPU 
and all those amps from the batter-
ies providing power to the plane. 
The disadvantage of using only the 
JumpStart option is that you are us-
ing the tugs batteries that discharge 

with time, and some planes require 
over 28 Volts before they can recog-
nize the external power source. With 
the JumpStart plus Boost, you can 
combine both sources of power for 
an excellent source of current at the 
correct voltage to start your plane.

GPU PANEL

W/ EXPOSED 110 VAC PORT

JumpStart Panel

JumpStart Panel
w/Silver Boost Button

Plug the cable into your plane 
first! Which service your plane 
gets depends on which pow-
er panel you insert the cable. 
See page 16