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From: wschertz@comcast.net
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: EM2 Warning light
Date: Mon, 25 Feb 2008 20:05:49 +0000
Message-Id: <022520082005.9143.47C31F9D0003A4B4000023B72213528573969B9D0A080C9C99@comcast.net>

Check the manual -- I believe that the warning light should be connected to a 5 volt source. At least if using LED's. An LED will glow all the time if fed with 12V, but if it is incandescent, it won't light up. The EM-2 connects to ground when alarming
Bill Schertz
 -------------- Original message ----------------------
From: Bob White <bob@bob-white.com>
> Hi Bob,
> 
> It sounds like a wiring problem.  The warning light should be connected
> to the 12V bus on one side, and the other side is connected to the wire
> from the EM2. If it's an LED, then polarity of the LED is important too.
> 
> When a reading is out of spec on the EM2, the reading also flashes.
> That continues even when the ACK button is pushed.  Are you seeing any
> of the readings flash off and on on the EM2 display?
> 
> Bob W.
> 
> On Mon, 25 Feb 2008 10:13:49 -0500
> bmears9413@aol.com wrote:
> 
> > 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/
> > > 2050827?NCID=aolcmp00300000002598)
> > > 
> > 
> > 
> 
> 
> -- 
> N93BD - Rotary Powered BD-4 - http://www.bob-white.com
> 3.8 Hours Total Time and holding
> Cables for your rotary installation - http://roblinstores.com/cables/
> 
> --
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