Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-19-2005, 01:54 AM   #1
VAC President
 
Buttercup's Avatar
 
1977 27' Overlander
1954 25' Cruiser
1990 34.5' Airstream 345
VC Highlands , Nevada
Join Date: Mar 2005
Posts: 2,149
Send a message via Skype™ to Buttercup
Intellipower in and tested…

I got our Intellipower in and load tested (as much as I could by turning on everything). It all worked fine. A little noisy with no load on it ( a few led lights) but quieted right up with a little more load. I noticed that the fan didn’t start up right away as I would have expected with a little load. I started adding load a little at a time until I had everything but the water pump running and the fan never came on. The heat sink started getting warmer and warmer and I was starting to get a little worried. I must have had close to 300 watts running:

·All lights

·Kitchen fan

·Main cabin fan (bathroom fan not working)



With all of that the Intellipower fan didn’t come – right away. After about 10 minutes with the heat sink getting warmer and warmer it finally started spinning a little getting faster – but never coming close to full speed. The heat sink temperature seemed to level off.


The whole time the voltage stayed within .04 volts of 13.7 – rock steady as far as I am concerned. That is a sweet little unit. Only complaint I might have is hearing some harmonics in one motor – might be my imagination. Wish I had an “O”-scope to take a look.


I did notice one thing the fuse for the kitchen lights did get pretty warm! Burned my finger but didn’t blow. I powered down and let the fuse cool. Then pulled it and cleaned the contacts and the fuse and reinstalled it – ran cooler. Voltage drop across the fuse was .09 volts – almost a tenth so there was some heat building up there. I cleaned up the rest of the fuses just for good measure. Might be a good PM to do every once in a while….


Sorry no pictures for a little while - computer took a digger.
__________________

__________________
Buttercup's Web Site. WBCCI #17330, 11281 & 7830. VAC Past President, TAC NV-2 & NV-3
Buttercup is offline   Reply With Quote
Old 06-19-2005, 09:17 AM   #2
uwe
418
 
uwe's Avatar
 
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,767
Images: 41
Send a message via Skype™ to uwe
Did you have it charging the batteries at the same time? I hooked up my new Intellipower yesterday as well, and my fan started running aftger a very short while, and would not go off for a few minutes. The unit also got quite warm.
The batteries are a new pair of Interstate deep cycle 27's.
I could only run 2 fantastic fans to put a load on the system, since I don't have any other users in the trailer yet, but it was nice to run the fans while working inside.
__________________

__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 06-19-2005, 09:54 AM   #3
Rivet Master
 
3Ms75Argosy's Avatar
 
1975 Argosy 26
1963 24' Tradewind
Seattle , Washington
Join Date: Aug 2002
Posts: 2,341
Images: 7
It should be normal

If I read the instructions correctly on my IP, the fan only comes on if it gets too warm. Mine hasn't come on at all (that I noticed while camping).

The noise thing, is another matter. Does it hum? It shouldn't. Mine is undectible. I haven't heard that any other member's unit makes noise. Can you describe it?
Marc
__________________
3Ms75Argosy is offline   Reply With Quote
Old 06-19-2005, 11:39 AM   #4
Rivet Master
 
C Johnson's Avatar
 
1965 17' Caravel
Butte , Montana
Join Date: Feb 2005
Posts: 1,183
Images: 326
Send a message via MSN to C Johnson Send a message via Yahoo to C Johnson
IP noise-fan

With my IP on and a full load hooked to it, the fan never really came on all the way. It actually shuts off, comes on, shuts off, just like its supposed to. The only noise I heard from it was when the fan was initially starting up.


Chris
__________________
AIR # 7276, WBCCI # 7276
Photos of Project 2k5
Project 2k5
Life is a journey, not a destination
C Johnson is offline   Reply With Quote
Old 06-19-2005, 12:38 PM   #5
uwe
418
 
uwe's Avatar
 
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,767
Images: 41
Send a message via Skype™ to uwe
Mine has a slight buzz, not nearly as loud as a Univolt, but definitely audible. My fan cycles in and out, and does so quite noisily. It's louder than the fantastic fan on medium speed. I am hoping that this won't be a problem once the cabinets are built around it.
__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 06-19-2005, 01:39 PM   #6
3 Rivet Member
 
markparker22's Avatar
 
1984 31' Excella
Santa Barbara , California
Join Date: May 2003
Posts: 144
What do you do with the AC Power On wire that used to go from the Univolt to the fuse block? I just installed an Intelipower Converted and found that the AC Power On wire needs to be grounded for this light to come on in the Panel. Today I plan to open up the old Univolt and see how it made the panel AC light turn on.
__________________
Mark

1984 31' Excella, mid bath, king size bed
1998 Chevrolet Suburban K2500, 7.4L/454 c.i., 4WD, Pullrite Hitch
AIR No. 2375

"You know... life is just the way it is...."
markparker22 is offline   Reply With Quote
Old 06-19-2005, 05:59 PM   #7
Rivet Master
 
fastrob's Avatar
 
1976 25' Tradewind
. , AZ to Maine
Join Date: Sep 2004
Posts: 545
Revolting Current Problems

Our '76 has problems usually related to corrosion in electrical connections.

Whatever electrical that has not worked, functioned after cleaning the bulb

holder, fuse connection or checking wiring connections.

Of course the univolt was replaced when it died. When our fan comes on I

know the trailer is plugged in and not draining batteries
__________________
fastrob is offline   Reply With Quote
Old 06-19-2005, 06:02 PM   #8
Rivet Master
 
Janets Husband's Avatar
 
1977 Argosy Minuet 6.0 Metre
1964 26' Overlander
1977 25' Tradewind
Eastern , Washington
Join Date: Jan 2004
Posts: 865
Images: 6
Quote:
Originally Posted by Fast Rob
Our '76 has problems usually related to corrosion in electrical connections.
Whatever electrical that has not worked, functioned after cleaning the bulb
holder, fuse connection or checking wiring connections.
Of course the univolt was replaced when it died. When our fan comes on I
know the trailer is plugged in and not draining batteries

Another plus with the Intelepower beside having the extra power, the unit also conditions the batery for longer battery life.
__________________
Peace
Gary
Janets Husband is offline   Reply With Quote
Old 06-19-2005, 09:57 PM   #9
VAC President
 
Buttercup's Avatar
 
1977 27' Overlander
1954 25' Cruiser
1990 34.5' Airstream 345
VC Highlands , Nevada
Join Date: Mar 2005
Posts: 2,149
Send a message via Skype™ to Buttercup
O.K. Here are my answers to everything at once…



Uwe,

I did not have it charging any batteries. I have not yet put batteries in the trailer but I think it will not be a problem. I have to get the batteries but I will be waiting until August probably for that. I am a little concerned that you hear a buzz. These units should be very quiet. Even with the load I had put on mine it didn’t make any noise. Even with the fan on it was very quiet… I am not suggesting that you have a problem in any way but I wouldn’t expect the unit to make noise.

The whine my unit made was during extremely low current draw – less than 1 watt. That is barely on for this type of power supply so the noise was not a problem. 1 incandescent lamp was all I needed to get the whine to stop.



Marc,

This type of power supply is what is called a switching power supply. Basically, it chops the incoming power up into little bits, filters it because the chopping up part produces “noise” and then sends it on the way to the system. That is the very basic description. Transformer based power supplies hum because of the interactions of the windings of the transformer with the magnetic fields they produce, among other things. But switching power supplies don’t make noise because there are no real moving parts (like the windings of the transformer).



Mark,

I just cut that wire. I have to look into it but I don’t think it does much. I have my tech manual and I will look that up.



Gary,

My understanding is that the the battery maintenance the IP does is only if you have the “Charge Wizard” installed. I got it and without the batteries I bushed the little button. The voltage on the IP went up to 14.5, about what I would expect for an equalization charge.

This little device automatically monitors and maintains the RV battery.

It has 4 modes of operation to maintain the battery. The most important to me is the desulfation mode where it basically puts a high charge current on the battery for 15 minutes about once a day. This serves to reduce crystal build-up on battery's lead plates.

If you want more information on this, Homepower magazine has some excellent online resources to read on batteries. Specifically http://homepower.com/files/desulfator.pdf and http://homepower.com/files/battvoltandsoc.pdf.



I’ll let everybody know when I get batteries installed…



Tim
__________________
Buttercup's Web Site. WBCCI #17330, 11281 & 7830. VAC Past President, TAC NV-2 & NV-3
Buttercup is offline   Reply With Quote
Old 06-20-2005, 12:42 AM   #10
3 Rivet Member
 
markparker22's Avatar
 
1984 31' Excella
Santa Barbara , California
Join Date: May 2003
Posts: 144
AC Power On light

Found out today that the white wire (with black fabric sheath) from the old Univolt (AC Power On) connected internally to a diode bridge that looks like it was clamped to near ground (-) voltage for all or part of the time. This would effectively ground the AC Power On wire and cause the panel light to be lit. So after cutting this wire off of the old Univolt I will use a 110 volt relay from Radio Shack to switch this wire to ground (about 100 ma with the original bulb).
__________________
Mark

1984 31' Excella, mid bath, king size bed
1998 Chevrolet Suburban K2500, 7.4L/454 c.i., 4WD, Pullrite Hitch
AIR No. 2375

"You know... life is just the way it is...."
markparker22 is offline   Reply With Quote
Old 06-23-2005, 08:48 AM   #11
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
ok but here's what I have found out in mine.
BUTTERCUP, The fuse you are using are probably .250 diameter which is smaller than the .282 diameter of the original AGS type fuse. Being smaller size they are not making as tight connection and that is partly why rhe resistance might be higher. Also if you come by my place i'll be glad to let you use my scope anytime.
MARKPARKER, you are right on the bridge diode in the univolt but it does not go to ground. It provides 12 volts dc directly from the secondary winding through fuse "o" (in my univolt model 35) to the power bulb. The purpose for doing that is for the bulb to indicate that the univolt is powered and has output. Since the house battery and the RV battery and Univolt output are all connected together thru fuses "M' the power bulb has to be insulated from those batteries otherwise it would be "ON" all the time even when Univerter is not powered.
When converting to another charger and using the old univolt fuse board the same results can be achieved simply by connecting a diode between the charger output the the 1 amp fuse powering the power lead going to the bulb. Naturally the "plate" goes to the 12 volts output and the "cathode" to the bulb. Now u know I am an old timer because of my termilology used. I'll be glad to provide any additional help to anyone at no charges.
__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 06-23-2005, 09:30 AM   #12
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
Sorry for my erroneous statement in last comment. I meant 2 diodes and not only one and the results will be the same only if you have an adjustable output voltage or a sensor lead on your charger.
__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 06-27-2005, 03:40 PM   #13
VAC President
 
Buttercup's Avatar
 
1977 27' Overlander
1954 25' Cruiser
1990 34.5' Airstream 345
VC Highlands , Nevada
Join Date: Mar 2005
Posts: 2,149
Send a message via Skype™ to Buttercup
FrenchBern,

The fuse is quite tight, in fact the glass cracked on one fuse when replacing it after cleaning. That will have to be replaced.

You are on for the scope viewing!
__________________
Buttercup's Web Site. WBCCI #17330, 11281 & 7830. VAC Past President, TAC NV-2 & NV-3
Buttercup is offline   Reply With Quote
Old 06-27-2005, 03:53 PM   #14
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,193
Bad to operate with no battery?

If the Intellipower is constructed electronically the way an alternator is constructed, that is, with internal voltage control and a rectifier bridge, it can damage the electronics of the unit running it with no battery. Even a bad battery would be preferable.
Also, if anyone takes it into their head to unhook the intellipower from the battery while it is on to see if it is working, it would not be a good idea. It can be charging at 20-30 amps, and if that amperage has nowhere to go, it can turn into a huge power spike that can do no good to the unit.
The Intellipower is a great unit, but it cannot withstand the electronic equivalent to running over it with a bus.
__________________

__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:22 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.