ZENAIR CH2000 SERVICE MANUAL
________________________________________________________________________
REPLACEMENT OF THE BATTERY
1.
Remove the
rear fuselage side access panel. (See Fig. 2)
2. Remove the bolts holding the battery tie down brackets.
Caution: Always remove the ground cable first (and install it last), to prevent
accidental short circuit.
3. Remove the two battery terminals from the battery post.
4. Remove the battery with its container (batter container is optional when using a
SEALED LEAD ACID battery
) from the aircraft.
5. Remove battery from container.
REINSTALL in reverse order.
SERVICING THE BATTERY
The battery should be checked for proper fluid level (not required when using a
SEALED
LEAD ACID battery)
, but must not be filled above the baffle plates. A hydrometer check
should be performed to determine the specific gravity of the electrolyte (1.268 standard,
and 1.285 for better cold-weather cranking capacity). All connections must be clean and
tight. If battery is not up to normal charge, recharge starting with a charging rate of 4
amperes and finishing with 2 amperes. The normal charged battery will indicate 11.5
Volts or more.
CHARGING SYSTEM
The charging system consists of a 3 phase, delta connected alternator with integral silicone
diode rectifiers rated 14V D.C. at 60 amp continuous output; and a voltage regulator
which delivers a constant frequency, pulse with modulated field power control to maintain
the alternator output voltage.
The over voltage protection is provided within the regulator: it will trip off the regulated
output after the regulator fails to maintain the correct level.
Note: the regulator will remain locked off until the power is momentarily removed and
reinstated.
The regulator is internally protected against damage to the output stage in the event of a
ground fault to the field wire. It will be locked off until the power is momentarily
removed and reinstated.
The alternator and regulator are easily checked individually.
10.4
3 Apr 96
