Continuous Sweep

[John_Galt]

Continuous sweep - started in the middle of league.
MP chassis, AccuScore+, Westinghouse.

Will run through both 1st and 2nd ball cycle good, but instead of stopping at 0 after cycle, the sweep just keeps on truckin'. It doesn't even make an effort to stop at 0. Using SA, I can start/stop it on a dime, even going down.

~changed chassis
~changed stator
~changed SA (lever and cam adjustments are good)
~checked terminal strip for debris
~manually opened/closed Accu sweep arm switch circuit
~changed sweep run switch
~yelled at it

For what it's worth, when I looked at it later, I noticed that the gearbox moves a little bit when you start the sweep in the toughest pulls for it, also SB is just a little early.

Suggestions?
Chaddy

[Keep them running]

Re: Continuous Sweep

when it runs through zero does it stop at 66.

[John_Galt]

Re: Continuous Sweep

No. I have to run the table and interlock it to make it stop. After I clear the interlock, it's good for one cycle.
Forgot to mention that it doesn't even stop when you hit Program Zero on the chassis.

Thanks for responding.

[Ar Rar]

Re: Continuous Sweep

Did you change SB? It can also cause continuous cycle.

RR

[MCSS]

Re: Continuous Sweep

Originally posted by Magic Triangle:
Continuous sweep - started in the middle of league.
MP chassis, AccuScore+, Westinghouse.

Will run through both 1st and 2nd ball cycle good, but instead of stopping at 0 after cycle, the sweep just keeps on truckin'. It doesn't even make an effort to stop at 0. Using SA, I can start/stop it on a dime, even going down.

~changed chassis
~changed stator
~changed SA (lever and cam adjustments are good)
~checked terminal strip for debris
~manually opened/closed Accu sweep arm switch circuit
~changed sweep run switch
~yelled at it

For what it's worth, when I looked at it later, I noticed that the gearbox moves a little bit when you start the sweep in the toughest pulls for it, also SB is just a little early.

Suggestions?
Chaddy

<font size="2" face="Verdana, Helvetica, sans-serif">I've had the same problem a few months ago and it was the SB micro switch.

Hope this helps
Mike

[TheGMan143]

Re: Continuous Sweep

Depending on the chassis, take a look at your lower contacts on the S-Cont..

[John_Galt]

Re: Continuous Sweep

SB must surely be the culprit then.

It makes sense - SB was exhibiting faulty switching though I didn't fully recognize it, and if SB doesn't open, then SA's signal is insignificant because the chassis is waiting for an open from SB first.

I will keep you posted.

Chad

[Alastair]

Re: Continuous Sweep

Once had a machine which had a constant sweep run. This was caused by a faulty omega-tek board in the chassis. Could be related to your XOP board in the chassis? (unsure which board the MP runs with.)

This isnt the problem as you have mentioned that you swapped chassis though!

[John_Galt]

Re: Continuous Sweep

Place your bets now.
BETTING CLOSED!

It was not SB.
It was not a chassis problem.
It was not a coasting problem.
It was not an Accu problem.

The head mechanic at the center had it fixed before anyone else arrived in the center Monday morning. He's a spectacular mechanic.

My good friend Jack Mayfield at Vantage also hit it directly on the head, immediately after I described it to him and stopped talking.

I've poured over the block diagram several times and I cannot figure out why it is what it is.

There was a piece of insulation that cracked off of the OOR switch wire and had grounded to the frame in the wireway somewhere.

Can you explain it? Why would a shorted OS circuit cause a continuous sweep?
You can simulate it by hooking the terminals on your OS together. Remember, this is an NC switch!

Let us all learn from this!
Chad

[felix]

Re: Continuous Sweep

Can't Explain it. But I've had the same problem. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img] Would've directed you in that direction, but I couldn't of explained it properly. COPYCAT [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]

[BowlEquip]

Re: Continuous Sweep

WOW! Great to know! For those of you who are C-23 or Elco Chassis people, the symptoms of grounded OS are:

1st Ball Cycle: Sweep drops to 66°, no table run. Mask shows 1st ball.

2nd Ball: Sweep drops to 66°, no sweep run through, therefore no spot...no nothin'.