4-8 28.5 VDC GROUND POWER (WITH 208/240 VAC POWER) SYSTEM LOW POWER
DEMAND (100 amps or less).
1. TRANSPORT UNIT - The Turbo Start 4100 is easily transported us-
ing the wheels that are incorporated into the unit. The unit is en-
gineered to be pushed rather than pulled.
2. CONNECT AC POWER CORD TO UNIT - Make sure that the On/Off switch
is in the Off position. Ensure 208-240 Single Phase VAC 30AMP power
cord is properly connected to an approved AC power supply. Unit shall
be in Horizontal position to ensure unit’s vent ports are free from
blockage. After approximately 5-8 seconds, unit’s LED status indica-
tor will illuminate indicating power cells state of charge. Cooling
fan will operate. Ensure LED status indicator and cooling fan are
operational prior to continuing to step 3.
NOTE
THE ON/OFF SWITCH CONTROLS THE AC POWER INPUT. IT DOES NOT CONTROL
THE DC POWER OUTPUT. IF YOU PLUG THE UNIT INTO AN AIRCRAFT WITH THE
AC ON/OFF SWITCH IN THE OFF POSITION, THE UNIT WILL STILL PROVIDE
24VDC POWER TO THE AIRCRAFT.
3. CONNECT DC POWER CABLE TO UNIT - Ensure power cable connector is
fully seated into unit’s receptacle.
4. CONNECT DC POWER CABLE TO AIRCRAFT - Connect to aircraft ground
power receptacle. DC bus power should come on and aircraft volt
meter should indicate 27.5 VDC to 23.5 VDC (23 VDC minimum).
5. MOVE THE ON/OFF SWITCH TO THE ON POSITION - After approximately
2-3 seconds, the unit’s LED bar status indicator will illuminate,
indicating the power cells state of charge. The cooling fans will
operate. Ensure the LED status indicator and cooling fans are opera-
tional. At this time the unit can provide 100 amps at 28.5 VDC. If
the current demand is above 100 amps, the output voltage will de-
crease and two or more LED status indicator bars will illuminate.
7. REMOVING DC POWER SUPPLY FROM AIRCRAFT a. Switch the ON/OFF switch to the OFF position
b. Remove DC power cable GPU connector from aircraft.
c. Remove DC power cable connector from Turbo Start (if neces-
sary).
4-9 POWER CELL RECHARGE
1. CONNECT AC POWER CORD TO UNIT -
Unit shall be in horizontal po-sition to ensure unit’s vent ports are free from blockage. - Ensure
208-240 VAC power cord is properly connected to an approved AC power
supply. After approximately 5-8 seconds, ensure unit’s LED status
indicator illuminates indicating power cell state of charge and cool-
ing fan is operating. 4-5