Cell Problem

CCR900

Cells are F5 (June?) but rig is Mar 2006. Rig has just come back from the shop and hasn't got much more than 16 hours on it (not my fault I promise).

I calibrate, everything looks cool until I check the backup. Cells 2 on backup read 0.99/3.64/0.99 (Mv reading on cell 2 is sky high) versus 0.99/1.00/9.99 on the primary. I do a quick manual adjust on the backup but can only get it down to 2.00. I think that wow the primary managed to calibrate a dicky 2nd cell. Dive is bind .

At home I swap the cells around 3.64/0.99/0.99 on the backup and 0.98/0.23/0.23 on the primary.

So am I right in thinking that the (high) cell is shot? It must be right? The way the problem moves around as I move the cell position makes me think cell and not hardware, am I wrong.

The things that are strange to me are:

1. The master calibrated the "bad?" cell even with very high Mv values (leaving a vast variation with the backup values).
2. Cell health on the high cell said 100% versus 50% on the others

Normally I would not ask these questions so loudly but it's the weekend and I can't talk to the factory until Monday (i'm getting stressed - no diving again).

Thanks for any help if you can......

Fil

CCR900

I meant to say "At home I swap the cells around 2.90/0.23/0.23 ......"

Fil

CCR900

Other thing I note is now that the cells have been in air for a while the cells reading of the high cell is coming down ie 0.23 in air but the Mv reading is still very high ie 22Mv.

caveseeker7

Have you hooked them up to a normal mV meter to get readings?

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Cheers
Stefan



"Political Correctness is a doctrine, fostered by a delusional, illogical minority,
and rabidly promoted by an unscrupulous mainstream media,
which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.!"

CCR900

Need to go out and buy one........

DrJM

C'mon the beauty of the system is that you can still go diving by de-activating the cell, your voting logic will be on two cell and if you're still a bit stressed do some dil flush and check the ppo2 given by the cells

I've done it for many hours when my cells where dying last year after 150h at high ppo2 usage and no prob, good exercise



Wasn't it a story about Teledyne-Vandagraph giving a year waranty on there cells ... maybe worth sending it back to Kev who'll send it back to Teledyne ...

Keep us posted on the outcome

Jerome

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Deep Cave Exploration

CCR900

Cell is going back on Monday....

As for 'doin it with 2' I agree if I had a little bit more time on the rig I probably wouldn't give a pooh but I am not having much luck with my baby so i'll sit back and take my time.

A simple cell problem is not sweat what I am cocerned of is "something else".

F

Nad

I had a cell similar problem.
I began to check Mv, and it was ok. I changed cables between cells and I discovered that there was a problem: I cleaned the jack plugs then I changed the battery. Since then no more problems.

Nad

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DrJM

Yeaaaaaaaaaah I forgot about this one, had same stupid readings on IIry when his 3,6v battery was quickly dying to 3,4

Go on Fil may the force be with you !

Jerome

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Deep Cave Exploration

CCR900

Yeah guess what I checked all the cells this a.m. and cleaned the jacks, MV dropped to normal. Gave the cells an O2 bath for an hour and then calibrated all seems OK now. (Though will probably get a new cell just in case).

Now I just tride to call up a boat handler for a dive and the b*stard doesn't pick up his phone......

F