Fuse blowing on sense line on SAR1

For all issues involving the Smart Alternator Regulators, V1, V2 and V3

Fuse blowing on sense line on SAR1

Postby dmain on Fri May 23, 2014 12:49 pm

I've had a SAR12 (serial #916) operating swimmingly with a 100A Model 1022 (serial#517) alternator since 1994.
After re-installing my battery this spring, the fuse in the sense line keeps blowing when connected to the battery.
Everything is physically the same as always.
Any ideas as to what I could be looking for to remedy this?
dmain
 
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Re: Fuse blowing on sense line on SAR1

Postby Coulomb on Fri May 23, 2014 4:07 pm

There's a short circuit developed, but without testing the unit we can't predict where it might be.

Twenty years of service is a pretty good track record. You might consider upgrading the the SAR V3. We offer a $50 discount for upgrades.
Coulomb
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Re: Fuse blowing on sense line on SAR1

Postby dmain on Mon May 26, 2014 3:17 am

Thanks
I had a feeling things might head in this direction. I'll be in touch.
dmain
 
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Re: Fuse blowing on sense line on SAR1

Postby dmain on Fri Jun 06, 2014 12:39 pm

Good Afternoon

I received my SAR V3 this week. (Thanks Ruth) I'm preparing to swap out the old with the new using the existing wiring. Does this chart look OK?

NEW OLD
1 ===
2 2=7
3 1=6
4 1=2
5 2=10
6 1=10
7 ===
8 1=8
9 2=8
10 1=9
11 ===
12 2=9
13 NEW
14 1=4
15 2=5

Re Battery Type Selection : I have a Surrette 4D Type 12 HHG 185PM (185A). I'm guessing thick plate liquid?

Regarding Terminals 14, 15 : I have a switch for current limiting (9 HP diesel) and a keyed switch for equalization. Do you have recommendations for settings for each? Do I need to short P1 ?

Your input is greatly appreciated; I don't think I'm as smart as I was 20 yrs. ago when I wired up the first one!

Regards, Dave
dmain
 
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Re: Fuse blowing on sense line on SAR1

Postby dmain on Fri Jun 06, 2014 12:50 pm

I forgot to ask if the snubber #1030 is still required.
There's no mention of it in the new literature.

Thanks again, Dave
dmain
 
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