Game Composites GB1 GameBird, Maintenance Manual

Page: 67 / 269

Maintenance Manual GB1 GameBird
Page date: April 24, 2020
24-2
Electrical System, General
This chapter contains information on DC Generation and Electrical Load Distribution.
The airplane is equipped with a 14-volt direct current (VDC) electrical system.
The system provides uninterrupted power for avionics, flight instrumentation, lighting, trim system and other
electrical devices during normal operation.
The switch panel on the RH side console in the rear cockpit contains Switches for:
- Battery Master / Alternator
- Avionic
- Anti-Collision Lights (ACL)
- Smoke Refill
- Boost Pump
The circuit breaker panel on the RH side console in the rear cockpit contains Circuit Breakers for:
- Field = Alternator Field
- Smoke = Smoke System
- AHRS = GSU 25 ADHRS
- FLUX = GMU 11 Magnetometer
- USB = dual USB charging ports, one in each cockpit
- MFD2 = Multi-Function Display 2, in front cockpit
- XPDR = Transponder
- VHF = VHF
- MFD1 = Multi-Function Display 1, in rear cockpit
- EDC = Engine Data Converter GEA 24
- TRIM = Elevator- and Aileron trim servo and trim position indication system
Overview Electrical System:
The electric system is activated via the Split Master Switch;
left-hand half of the split Master Switch is actuating the Master relay, providing power from the Battery to:
- Starter Relay and Starter via the Keyed ignition switch, with positions for OFF, R, L, BOTH and START.
In position ‘START’ the starter is activated and the Slick Start Magneto Booster is energized.
Positions R grounds the left Magneto, Position L grounds the right Magneto, OFF grounds both Magnetos.
- MFD 1 in the rear cockpit, via MFD1 CB
- Engine Data Converter, via EDC CB
- Anti-Collision Lights, via ACL CB Switch
- Fuel Boost Pump, via BOOST PUMP CB Switch
- Trim System, via TRIM CB
- Power relay for the Smoke pump, via Smoke CB; the smoke system can be filled by moving the Smoke
Refill CB Switch in the aft position, reversing the polarity of the smoke pump.
The right half of the split Master Switch (through the Field CB) is switched ON after engine start is complete,
exciting the Alternator, controlled by the Voltage Regulator, providing power to avionics, flight
instrumentation, lighting, trim system and other electrical devices during normal operation.
The Alternator and Regulator also provide charging power for the battery.
During normal operation, both halves of the split Master Switch are in ON position.
Alternator
Battery
Battery
Master
•
MFD 1
•
Engine Data Converter
•
Anti-collision lights
•
Boost Pump
•
Trim System
•
Smoke System
Avionic Master
•
VHF, Intercom
•
XPDR
•
MFD 2
•
ADAHRS
•
Magnetometer
•
USB plugs
•
Landing Lights
Starter