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Search: Posts Made By: sajohnson
Forum: Sprinter and B-van Forum 06-25-2018, 09:21 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Hi Alex, You're absolutely correct about...

Hi Alex,

You're absolutely correct about high temps negatively affecting max. output. Needless to say, the range I quoted above (~0*F > 140*F) is merely the temp range over which the inverter...
Forum: Sprinter and B-van Forum 06-25-2018, 06:06 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Thank you Mike, your posts have been very...

Thank you Mike, your posts have been very helpful!

That's what I was thinking, based on your description.

Question:

With the ACE circuit and disconnects operating as designed by AS (no...
Forum: Sprinter and B-van Forum 06-25-2018, 05:03 PM
Replies: 232
Views: 27,689
Posted By sajohnson
My first thought is that all of this is a lot to...

My first thought is that all of this is a lot to go through, all because an inverter cannot be shut off completely.

I understand that the disconnect would be used when storing or extended parking...
Forum: Sprinter and B-van Forum 06-25-2018, 04:32 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Hi Alex, Glad to hear you got your rig back!...

Hi Alex,

Glad to hear you got your rig back!

WRT #1 above, was the 1012 in "inverter mode" or "AC pass-thru/Battery charger mode" at the dealer?

Did they have the seat cushion in place?
...
Forum: Sprinter and B-van Forum 06-25-2018, 04:00 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 issue with AC ripple voltage

Thanks for giving us the straight scoop on this Mike.

I never bothered to use my Fluke to measure the current draw with our MS2000 switched "OFF". I figured off meant off, and the power for the...
Forum: Sprinter and B-van Forum 06-24-2018, 08:46 PM
Replies: 232
Views: 27,689
Posted By sajohnson
BTW -- the instructions in the MMS1012 manual are...

BTW -- the instructions in the MMS1012 manual are even worse.

https://www.magnum-dimensions.com/sites/default/files/MagDocs/64-0036-Rev-B-MMS-Series_Web.pdf

Page 38:

~~~

Internal fault...
Forum: Sprinter and B-van Forum 06-24-2018, 08:28 PM
Replies: 232
Views: 27,689
Posted By sajohnson
No problem, I see what you mean. Of...

No problem, I see what you mean.

Of course, these are instructions for performing a Power Reset-- something that most people will never have to do, so very few people will read them.

The...
Forum: Sprinter and B-van Forum 06-24-2018, 06:57 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Thank you for sharing that Pat. What I saw...

Thank you for sharing that Pat.

What I saw made sense to me.

I think the ripple that is harming some Magnum 1012 inverters is different, because it happens while the batteries are...
Forum: Sprinter and B-van Forum 06-24-2018, 04:51 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Well, either we have different manuals or I'm...

Well, either we have different manuals or I'm overlooking that warning.

My hard copy manual is the same as this PDF:...
Forum: Sprinter and B-van Forum 06-23-2018, 09:07 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Good point about Magnum showing a battery...

Good point about Magnum showing a battery disconnect switch in their manual.

FWIW, our MS2000 manual is the same -- battery disconnect shown.

I can find no mention of the AC ripple issue.
...
Forum: Sprinter and B-van Forum 06-23-2018, 03:33 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 issue with AC ripple voltage

So far so good. My feeble brain comprehends.



Just for clarity, there is no conventional 'converter', correct? The system uses the battery charger in the Magnum 1012 to power 12 loads, as...
Forum: Sprinter and B-van Forum 06-22-2018, 04:25 PM
Replies: 232
Views: 27,689
Posted By sajohnson
At the risk of appearing stupid (quite possible)...

At the risk of appearing stupid (quite possible) that statement makes no sense.

1) In one breath the Magnum CSR says:

a) "Opening the inverter disconnect switch only disconnects the inverter...
Forum: Sprinter and B-van Forum 06-21-2018, 07:52 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Another notice regarding the Magnum 1012 in...

Another notice regarding the Magnum 1012 in Crestline vehicles:

"Inverter Can Overheat Causing Possible Fire – 2016-2017 Crestline Icon 2.0 Ambulances":
...
Forum: Sprinter and B-van Forum 06-21-2018, 04:43 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Excellent write-up MIke! Installed an MS2000...

Excellent write-up MIke!

Installed an MS2000 in our rig as well. This is the first I've heard of this issue, I'm glad to be made aware.

I don't think there is any warning in my manual...
Forum: Sprinter and B-van Forum 06-21-2018, 03:33 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 issue with AC ripple voltage

The problem outlined in the NHTSA report is interesting.

This is a key quote:

"No components are changed in this remedy. This is simply a wiring
change that ensures the inverter remains...
Forum: Sprinter and B-van Forum 06-21-2018, 12:25 AM
Replies: 232
Views: 27,689
Posted By sajohnson
HUSK N TUSK, In addition to the above, you...

HUSK N TUSK,

In addition to the above, you wrote, quote:

"Some people like drama and thrive on it...such as suing over a fridge.

Whatever floats your boat...or burns your van lol!"

You...
Forum: Sprinter and B-van Forum 06-19-2018, 08:38 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Nice shiny vents! AS didn't cut any corners...

Nice shiny vents! AS didn't cut any corners there.

Seriously -- those look like stainless steel. Very nice for vents that are essentially hidden.

As you said, a small fan would be nice --...
Forum: Sprinter and B-van Forum 06-19-2018, 12:53 AM
Replies: 232
Views: 27,689
Posted By sajohnson
My unsolicited, non-professional advice would be...

My unsolicited, non-professional advice would be to remove that cushion from on top of the inverter (or prop it up) when the seat is not being used. That should give it enough ventilation, even if...
Forum: Sprinter and B-van Forum 06-18-2018, 08:23 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

Wow.

First of all, nice looking coach -- what I can see of it.

I'm gonna go out on a limb and say Magnum would not approve... :blink:

That said, Magnum inverters have so much protection...
Forum: Sprinter and B-van Forum 06-18-2018, 12:21 AM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

Directly from the Magnum 1012 manual:

https://www.magnum-dimensions.com/sites/default/files/MagDocs/64-0036-Rev-B-MMS-Series_Web.pdf

Page 10:

WARNINGS:
• Do not mount the inverter near any...
Forum: Sprinter and B-van Forum 06-17-2018, 11:33 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

Hi Pat,

Since you pointed out earlier that the schematic shows the inverter ground wire being #8 gauge, I imagine you are aware that the schematic shows both the pos(+) and neg(-) DC cables as...
Forum: Sprinter and B-van Forum 06-17-2018, 12:50 AM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

You're absolutely correct about the safeguards.

Good point about having no trouble for the first 3 months.

I realize all of this is completely hypothetical at this point, but the ATS in the...
Forum: Sprinter and B-van Forum 06-16-2018, 09:21 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Good question SSquared. Stranger things...

Good question SSquared.

Stranger things have happened.

Although, even if something like that were to have been done, there is plenty of overcurrent protection.

I sure hope they tell Alex...
Forum: Sprinter and B-van Forum 06-16-2018, 08:07 PM
Replies: 232
Views: 27,689
Posted By sajohnson
I understand. No rush on my end.

I understand. No rush on my end.
Forum: Sprinter and B-van Forum 06-16-2018, 07:42 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

OK, I went to the 12V Main page. I had attached a screenshot of the section of that page that shows the inverter to an earlier post, #66 -- but I didn't look closely at the chassis ground.

I see...
Forum: Sprinter and B-van Forum 06-16-2018, 06:06 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Good enough Pat, thanks. I wasn't thinking...

Good enough Pat, thanks.

I wasn't thinking...
Forum: Sprinter and B-van Forum 06-16-2018, 05:18 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Good observations and questions Pat. The...

Good observations and questions Pat.

The schematic I'm looking at (attached above) does not seem to indicate the gauge of the chassis ground wire for the inverter. It is here: ...
Forum: Sprinter and B-van Forum 06-16-2018, 05:04 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Absolutely -- any hot smell is cause for alarm. ...

Absolutely -- any hot smell is cause for alarm.

Assuming for a moment that the schematic is accurate, the 1,380W rating could be a conservative rating for the pass-thru wattage.

IOW, when the...
Forum: Sprinter and B-van Forum 06-16-2018, 03:41 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

According to the AS schematic (attached), the 3 outlets are:

* Mid curbside
* Entertainment
* Main TV

They should all have an "Inverter" label.

However, the inverter/charger is fed by a...
Forum: Sprinter and B-van Forum 06-16-2018, 02:37 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012 with AC transfer switch circuitry

Yes absolutely.

Sounds like the failure was with their inverter/charger, but we should wait for the final determination.
Forum: Sprinter and B-van Forum 06-16-2018, 03:28 AM
Replies: 232
Views: 27,689
Posted By sajohnson
I found some wiring diagrams in the 2018 manual: ...

I found some wiring diagrams in the 2018 manual:
https://www.airstream.com/wp-content/uploads/2017/07/2018-Interstate-Owners-Manual.pdf

On page 103 the "12Volt Main Schematic" does indicate that...
Forum: Sprinter and B-van Forum 06-16-2018, 02:10 AM
Replies: 232
Views: 27,689
Posted By sajohnson
No doubt, you are very lucky indeed. If AS...

No doubt, you are very lucky indeed.

If AS follows thru, does the redundant detectors, and gives you the info you request, I'd be inclined to let it ride.

You might consider pressing AS to...
Forum: Sprinter and B-van Forum 06-16-2018, 01:00 AM
Replies: 232
Views: 27,689
Posted By sajohnson
Corporate reaction to potential safety issues

At least AS appears to be concerned.

There was a case a few years ago where a Winnebago View owner narrowly avoided being electrocuted due to a factory fault and he was ignored. When I wrote...
Forum: Sprinter and B-van Forum 06-16-2018, 12:37 AM
Replies: 232
Views: 27,689
Posted By sajohnson
Not to pick on AS (WGO has more than their share...

Not to pick on AS (WGO has more than their share of problems) but that is a poor design. Did they run out of breaker spaces in the panel?

You should be able to take advantage of the full 50A...
Forum: Sprinter and B-van Forum 06-16-2018, 12:15 AM
Replies: 232
Views: 27,689
Posted By sajohnson
Magnum MMS Series 1012

Thanks for providing the model #.

I found the PDF of the Magnum manual:
https://www.magnum-dimensions.com/sites/default/files/MagArchive/64-0036-Rev-A-MMS-Series.pdf

That looks like a very...
Forum: Sprinter and B-van Forum 06-16-2018, 12:14 AM
Replies: 232
Views: 27,689
Posted By sajohnson
At the risk of telling folks what they already...

At the risk of telling folks what they already know, the Magnum 1012 battery charger section is capable of putting out up to 50A.

That's a bit much for the typical 2 golf cart (GC) battery setup. ...
Forum: Sprinter and B-van Forum 06-14-2018, 07:41 PM
Replies: 232
Views: 27,689
Posted By sajohnson
Defective Magnum Inverter

All things considered that's great news Alex!

As you said, it's good that they were able to positively isolate the problem, rather than shotgunning it.

If it passes the 'burn-in' test you're...
Showing results 1 to 37 of 37

 

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