X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 30 Sep 2013 12:58:13 -0400 Message-ID: X-Original-Return-Path: Received: from mta41.charter.net ([216.33.127.83] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6496081 for lml@lancaironline.net; Mon, 30 Sep 2013 10:54:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=216.33.127.83; envelope-from=troneill@charter.net Received: from imp11 ([10.20.200.11]) by mta41.charter.net (InterMail vM.8.01.05.02 201-2260-151-103-20110920) with ESMTP id <20130930145416.HWSF10143.mta41.charter.net@imp11> for ; Mon, 30 Sep 2013 10:54:16 -0400 Received: from [192.168.169.2] ([75.132.162.230]) by imp11 with smtp.charter.net id XSuG1m0064yZwCz05SuGu3; Mon, 30 Sep 2013 10:54:16 -0400 X-Authority-Analysis: v=2.0 cv=KYGKKnkD c=1 sm=1 a=SmX8XOgDoNe7CI0pWN500A==:17 a=rt-JRnzQkrYA:10 a=yUnIBFQkZM0A:10 a=hOpmn2quAAAA:8 a=a4Yt1DxhSGkA:10 a=3oc9M9_CAAAA:8 a=5Up8faWwAAAA:8 a=Ia-xEzejAAAA:8 a=YW54wF0ZStblFgnDlY4A:9 a=CjuIK1q_8ugA:10 a=CVU0O5Kb7MsA:10 a=U8Ie8EnqySEA:10 a=v6MMM96S_sUA:10 a=DueCgEbitAP4IRjWa9oA:9 a=QEXdDO2ut3YA:10 a=_W_S_7VecoQA:10 a=X0kTf-24pydS-JMg:21 a=SmX8XOgDoNe7CI0pWN500A==:117 X-Auth-id: dHJvbmVpbGxAY2hhcnRlci5uZXQ= Subject: Re: [LML] Re: leaky electrical system References: From: Troneill Content-Type: multipart/alternative; boundary=Apple-Mail-34A2BEE8-8456-4A03-89FD-4D4D75DAAD1C X-Mailer: iPad Mail (10B329) In-Reply-To: X-Original-Message-Id: X-Original-Date: Mon, 30 Sep 2013 09:54:18 -0500 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-34A2BEE8-8456-4A03-89FD-4D4D75DAAD1C Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Scott, I guess that' possible... I don't recall but will check. That breaker I have= always left in, so that circuit might not go through the Master ! That woul= d be an easy fix ...but the question remains... Why is the pump circuit blee= ding when the pump is not running? Yes, the LSA ignition is direct tothebattery and has separate breakers. Terrence Sent from my iPad On Sep 29, 2013, at 11:02 PM, Sky2high@aol.com wrote: > Terrence, > =20 > If you have normal wiring, the Master relay should control all power - all= power connected after the contactor is closed. One side of the master rela= y coil is connected to battery + and the Master switch should ground the ot= her side of the coil to operate the contactor. The one exception is special= wiring for an electronic ignition that might have a direct to battery power= switch. > =20 > This means that you should have no battery drain with the master switch of= f (and any master relay bypass switch for the electronic ignition). > =20 > Is it possible that the power tap for the pump is on the battery side of t= he master relay? If so, what else is powered by that CB?. > =20 > Interesting, > =20 > Scott > =20 > PS, the "pump running" light receives iots power from the contactor plate o= f the pump control relays (I terminal) only when power is being passed to th= e pump. > =20 > In a message dated 9/29/2013 10:15:43 P.M. Central Daylight Time, colyncas= e@earthlink.net writes: > Terrence, >=20 > I'm inferring that you saw an instantaneous current. ...indicating you s= ee some current when the pump is not running. Could it be something in how y= ou have your indicator (e.g. pump running) lights wired? >=20 > On Sep 29, 2013, at 10:53 PM, Terrence O'Neill wrote: >=20 > My N211AL is from kit no. 11, and has electric prop, electronic ignition, d= ual grant rapids Tech EFIS, autopilot, flaps, navcom, GPS, transponder, inte= rcom, and retract gear. >=20 > My battery kept going dead, so was advised to put an ammeter on it and see= how much it was leaking, and then start pulling circuit breakers. > It was leaking 18.7 milliamps. I pulled CBs one at a time and reset them.= Would you believe the very last one stopped the leaking, and the ammeter w= ent to 0.0. > It is the CB for the hydraulic pump. >=20 > Question: why is that circuit leaking when the CB is in? > The pump works fine. =20 > I have added a pressure switch to keep the gear down and the airspeed is b= elow about 85 mph ... or to put the gear down when the airspeed drops below 8= 5k. The pump is off when the Master is off. > Is there something in the pump circuit that allows it to bleed? >=20 > (For now I'm adding to the Check List for Shutdown: Hyd. Gear CB -- out.= ) >=20 > Any suggestions welcomed. >=20 > Terrence > N211AL L235/320 > About 200 hrs. > -- > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.htm= l >=20 >=20 > -- > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.htm= l --Apple-Mail-34A2BEE8-8456-4A03-89FD-4D4D75DAAD1C Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
Scott,

I guess that' possible... I don't recall but will check. That breaker I have always left in, so that circuit might not go through the Master ! That would be an easy fix ...but the question remains... Why is the pump circuit bleeding when the pump is not running?
Yes, the LSA ignition is direct tothebattery and has separate breakers.

Terrence


Sent from my iPad

On Sep 29, 2013, at 11:02 PM, Sky2high@aol.com wrote:

Terrence,
 
If you have normal wiring, the Master relay should control all power - all power connected after the contactor is closed.  One side of the master relay coil is connected to  battery + and the Master switch should ground the other side of the coil to operate the contactor.  The one exception is special wiring for an electronic ignition that might have a direct to battery power switch.
 
This means that you should have no battery drain with the master switch off (and any master relay bypass switch for the electronic ignition).
 
Is it possible that the power tap for the pump is on the battery side of the master relay?  If so, what else is powered by that CB?.
 
Interesting,
 
Scott
 
PS, the "pump running" light receives iots power from the contactor plate of the pump control relays (I terminal) only when power is being passed to the pump.
 
In a message dated 9/29/2013 10:15:43 P.M. Central Daylight Time, colyncase@earthlink.net writes:
Terrence,

I'm inferring that you saw an instantaneous current.   ...indicating you see some current when the pump is not running.  Could it be something in how you have your indicator (e.g. pump running) lights wired?

On Sep 29, 2013, at 10:53 PM, Terrence O'Neill wrote:

My N211AL is from kit no. 11, and has electric prop, electronic ignition, dual grant rapids Tech EFIS, autopilot, flaps, navcom, GPS, transponder, intercom, and retract gear.

My battery kept going dead, so was advised to put an ammeter on it and see how much it was leaking, and then start pulling circuit breakers.
It was leaking 18.7 milliamps.  I pulled CBs one at a time and reset them.  Would you believe the very last one stopped the leaking, and the ammeter went to 0.0.
It is the CB for the hydraulic pump.

Question:  why is that circuit leaking when the CB is in?
The pump works fine. 
I have added a pressure switch to keep the gear down and the airspeed is below about 85 mph ... or to put the gear down when the airspeed drops below 85k. The pump is off when the Master is off.
Is there something in the pump circuit that allows it to bleed?

(For now I'm adding to the Check List for Shutdown:  Hyd. Gear CB  -- out.)

Any suggestions welcomed.

Terrence
N211AL L235/320
About 200 hrs.
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