I dont have a warnig light hooked directly to the alternator. I understand that if any display on my EM2 is out of "spec"..the display will flash and the warning light from the EM2 will light up untill you press the ACK button. My warning light never lights up...for any reason so far.

Bob Mears


-----Original Message-----
From: Bob White <bob@bob-white.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sun, 24 Feb 2008 11:02 pm
Subject: [FlyRotary] Re: EM2 Warning light



Hi Bob,

Warning light connected to the alternator?  It should come on when you
power up and go out when the alternator starts putting out.  If it's the
warning light from the EM2, it should start flashing when anything goes
out of it's range, and that's practically all the time when you're fist
setting it up.  If It's not coming on at all it sounds like something
isn't hooked up right.

On your water pressure, it should come up to cap pressure at the most.
Do you have an air cushion in your system.  If not, the pressure will
go pretty high because of liquid expansion until a little liquid is
pushed into the overflow tank.  23 psi isn't going to hurt the engine,
but the EM2 calibration needs to be checked also.  I was able to rent a
cooling system pressure tester from AutoZone which helped with the
calibration.

Bob W.


On Sun, 24 Feb 2008 23:46:39 EST
BMears9413@aol.com wrote:

> Is there a test mode on the EM2 warning lamp? My alternator is only putting  > out 12.6 volts and my EM2 has the voltage flashing, as it should. But my > warning  light doesn't light up. Shouldn't it? It hasnt lit up yet, even with the > engine  not started and 0 oil pressure.
>  > Bob Mears > Supermarine Spitfire.
>  > > > > **************Ideas to please picky eaters. Watch video on AOL Living.      > (http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/
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>