Cirrus SR20 Maintenance Manual page 70

C I R R U S
A I R P L A N E M A I N T E N A N C E M A N U A L
AA.Ammeter Select Switch - Serials 1005 thru 1581
(1) Removal - Ammeter Select Switch
(a) Ensure BATTERY and AVIONICS master switches are in the OFF position.
(b) Serials 1268 thru 1581: Pull BAT 2 circuit breaker to the OFF position.
(c) Remove engine cowling.
(d) Disconnect battery 1.
(e) Remove MFD.
(f) Remove screws and washers securing low-volts annunciator to instrument panel.
(g) Identify and disconnect all wires from low-volts annunciator and select switch.
(h) Remove nut and washer securing ammeter select switch to instrument panel. Remove
Low-Volts annunciator and Ammeter Select Switch from instrument panel.
(i) To disconnect switch, use a solder gun and remove solder from each terminal.
(2) Installation - Ammeter Select Switch
(a) Identify the corresponding wires and place heat shrink tubing into position. Solder all wires
to the corresponding terminal on the switch.
(b) Install screws and washers securing low-volts annunciator to instrument panel.
(c) Place ammeter select switch into position and secure with washer and nut.
(d) Install MFD.
(e) Connect battery 1.
(f) Install engine cowling.
(g) Serials 1268 thru 1581: Reset BAT 2 circuit breaker.
(h) Perform Operational Test - Ammeter Select Switch.
(3) Operational Test - Ammeter Select Switch
(a) Set ammeter switch to "BATT".
(b) Ammeter should read 0 to -10 amps.
(c) Turn on large electrical loads (landing light, nav lights, pitot heat, etc.) to ensure more
amps are drawn when larger electrical loads are introduced.
(d) Verify ammeter indicates an increased discharge.
(e) Set ammeter switch to "ALT1" and "ALT2".
(f) Ammeter should read "0" in both positions.
24-30
Page 70
19 Sep 2017
(Refer to 71-10)
(Refer to 24-30)
(Refer to 31-60)
(Refer to 31-60)
(Refer to 24-30)
EFFECTIVITY:
Serials 1005 thru 1581
(See Figure 24-3011)
(Refer to 24-30)
M O D E L S R 2 0