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Old 03-02-2011, 09:26 AM   #29
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Newmar would not answer my specific question! Instead they sent me the BIRD Service Manual. The service manual is attached to this post.

If one reads the first paragraph I understand what is happening completely. After that, I get confused.

Based on the first paragraph, when the batteries are all fully charged, the BIRD disengages the chassis and coach batteries from each other. For me, I guess this means 12.7 VDC is fully charged on my maintenance free flooded cell chassis batteries.

Read the manual and if you get a different view, please post here.
Attached Files
File Type: pdf BIRD Service Manual.pdf (91.8 KB, 1762 views)
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Old 03-02-2011, 12:43 PM   #30
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Interesting DP BIRD PDF its different than a gas BIRD PDF.
The pdf Gary post does not show the full wiring of Bird circuit for the DP the Mini- DP link below shows the complete wiring for that type DP.
Not sure Intellitec would supply wiring for large DP's.
I would check your units with the trouble section of Gary's PDF if you get the readings in that section your chassis battery should be OK.
The BIRD is going to keep the house battery bank as first priority when its charging the batteries if anything is left over will connect both battery banks through isolator and than charge chassis battery also.
If engine is running you should see your chassis battery being charged from alternator and isolator will than allow the house battery bank to be charged after chassis battery is brought up to full charge.
If your Gen is running the isolator is shut down to prevent battery banks from being connected, on DP coach.

All Intellitec units are in this link.
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Old 03-03-2011, 06:32 PM   #31
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I have looked at several Newmar DP's including mine and none have a gen wire attached to the BIRD. This means that both batteries are being charged at the same time.
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Old 03-04-2011, 12:46 PM   #32
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This thread provides ya'll an indication of why I became a ME and not an EE.
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Old 03-05-2011, 11:26 AM   #33
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I recently bought a 2007 MountainAire. Where are the BIRD and Isolater relays located?
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Old 03-05-2011, 12:04 PM   #34
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On a DP In a rear compartment drivers side behind duel wheels. There is a felt liner in compartment rear wall thats held by Velcro, peels back revealing the bird.

If it were in a gas coach would be on firewall right hand side in black box with clear plastic cover:

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Old 03-05-2011, 04:07 PM   #35
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I have the 41 ft version of the MountainAire, model 4121. I have no compartment behind the duals on the driver side.....only the side mounted radiator.
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Old 03-05-2011, 04:14 PM   #36
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On mine it is in the elect. bay in front of the wet bay.
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Old 03-05-2011, 04:57 PM   #37
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Quote:
Originally Posted by alan1 View Post
On mine it is in the elect. bay in front of the wet bay.

Yup....that is where it is. Found it behind a black plastic pieced, velcroed onto the back wall.....Thanks.
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Old 03-08-2011, 06:36 AM   #38
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Well, guess I'll take my coach into the dealer when I get home and have them take a look at the BIRD. It's still not allowing my coach battery to charge while hooked to 50amp. It gradually loses power, about 0.1volt a day.
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Old 03-08-2011, 06:58 AM   #39
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Hi RetiredBob,
After reading the BIRD manual, I'm sure of what the BIRD does, but not sure of when it does what it is suppose to do. That being said, consider taking a VDC reading off the coach charger. This would be at the charger's terminals that are suppose to charge the coach batteries. When connected to shore power, there should be nothing to interrupt charging the coach batteries. If one reads 13.5 +/- VDC at the charger and not at the coach batteries, I agree with the BIRD/Isolator relay needs to be looked at. However, if the charger is not providing the 13.5 +/- VDC, then the charger needs to be evaluated.
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Old 03-08-2011, 02:57 PM   #40
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Gary, just re-read my post--should have said BIRD is not charging my chassis battery. My coach batteries are staying charged at 13.7 volts.
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Old 03-10-2011, 10:03 AM   #41
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Bob make sure you have a good tight ground cable on your chassis battery both on the battery and frame of chassis.
You will not get a good voltage reading across the + & - of battery if loose.
My new coach had loose side screw on battery when I got it.
To read Bird charge with your house batteries read the now full charge which should now read a charge to coach battery read off + terminal--- TO A FRAME CHASSIS LOCATION for ground.
If you do not read a good charge than you Bird is not doing its job as you say.
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Old 03-10-2011, 11:17 AM   #42
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"To read Bird charge with your house batteries read the now full charge which should now read a charge to coach battery read off + TO A FRAME CHASSIS LOCATION."

Not sure exactly what you're saying here. Can you simplify for me, please?
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