THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
8-10
Effective: 01/01/08
arc (minimum) 16.0 to 22.5 volts, and an
upper red arc (maximum) 30.5 to 36.0
volts respectively. Continuous operation
over 30.5 volts is detrimental to the life
of the battery and could cause loss of
electrical power. A yellow arc from 22.5
to 24.0 volts indicates a caution range.
AMMETER
The ammeter displays current flow, in
amperes, from the aircraft alternator to
the battery, or from the battery to the
electrical system. With the engine
operating, the ammeter should indicate
the on charge (+) side unless there is an
aircraft alternator malfunction. A
discharge (-) indication will show if the
alternator is not working or if the
electrical load demand exceeds the
aircraft alternator output. Continuous
operation on the discharge side will be
detrimental to battery life and may
cause loss of electrical power.
HOPPER QUANTITY (Optional Equip.)
The hopper quantity consists of three
parts -- the level sensing element in
hopper, FA-A control box normally
located on left side of cockpit, and
quantity gauge located in instrument
panel. The gauge is adjustable between
0 gallons to 360 gallons and
incorporates two lights, one amber light
for low quantity, and one red right for
hopper empty. The system can be
calibrated per the following instructions.
Figure 8-4: Right Instrument Panel
