Cirrus SR20 Maintenance Manual page 69

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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

Z. Volt / Amp Meter - Serials 1582 & subs

Note:

Voltage and amperage are displayed on the screens of the MFD and PFD.

(1)

Operational Test - Volt / Amp Meter

(a)

Set BAT1 and AVIONICS switches to ON positions.

(b)

On MFD, when PRESS ANY BEZEL KEY TO CONTINUE is displayed, press any key.

(c)

If Engine Monitoring is selected, press [Fuel Done] to enter Map page.

(d)

Rotate left knob to select Engine page.

(e)

Verify main bus voltage indicates 26 ±2 VDC.

(f)

Verify essential bus voltage indicates no more than 1 vdc less than the main bus voltage.

(g)

Verify ALT1 indicates zero amps.

(h)

Verify ALT2 indicates zero amps.

(i)

Verify BATT indicates Dschg 0 - 10 amps.

(j)

Turn on large electrical loads (landing light, nav lights, pitot heat, etc.) to ensure more

amps are drawn when larger electrical loads are introduced.

(k)

Verify ammeter indicates an increase in amperage.

(l)

Set BAT1 and AVIONICS switches to OFF positions.

EFFECTIVITY:

Serials 1582 & subs

(See Figure 24-3011)

M O D E L S R 2 0

24-30

Page 69

19 Sep 2017