THRUSH S2R – G10 - Battery System

THRUSH AIRCRAFT, INC - MODEL S2R-G10
AIRCRAFT MAINTENANCE MANUAL
ELECTRICAL TROUBLESHOOTING CHART
BATTERY SYSTEM
TROUBLE PROBABLE CAUSE REMARKS
Battery fails to hold
charge
Battery defective Replace battery
Battery will not come up
to full charge
Charging rate to low
Check voltage regulator and
adjust to 27.5± .2 VDC
Battery consumes water
rapidly
Charging rate too high
Check voltage regulator adjust
to 27.5 ±.2
Electrolyte runs out
drain tube
Electrolyte level too high
Remove excess electrolyte &
adjust specific gravity
Excessive charging rate
Check voltage regulator for
correct voltage
Vent caps loose or broken Tighten or replace caps
Battery discharged Standing too long Remove battery and recharge
Equipment left on Remove battery and recharge
Short circuit in wiring Check wiring and correct
Charging rate too high
Adjust voltage regulator to
27.5
No power indicated with
battery switch on
Battery discharged, defective
or disconnected
Check battery, recharge or
replace battery
Blown C/B in battery control
circuit
Check C/B and reset if
necessary
Defective wiring in battery
control circuit
Continuity. Check circuitry and
repair as necessary
Defective battery relay
Check relay for proper
operation and replace as
necessary
Battery switch defective
Check switch for proper
operation. Replace if
necessary
Power on with battery
switch in OFF position
Shorted or sticking contacts
Check switch and relay for
proper operation. Replace if
necessary.
Effective: 03/26/2010 Page 10-7