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my bandsaw switch problem

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Forum topic by SCOTSMAN posted 529 days ago 837 views 0 times favorited 8 replies Add to Favorites Watch
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SCOTSMAN

5347 posts in 2212 days


529 days ago

I bought a new bandsaw a few years back it is a big Italian job.anyway it has a punch type dead switch which stops the machine I.E you hit it and rotate it to release then you switch on a push switch green lit up button to restart it.It has also a kid safety lock into which you can fit a small padlock to keep anyone else away from it when not required.Recently I have had problems getting the green light push switch to start the machine and have to fiddle with the safety switch first now the new problem is Whenever I release the red puch switch the machine comes straight on.It still works but it should be turned on with the green lit up push switch not on release of the red puch switch which as said when you rotate this so it comes back out it is switching on.Can anyone help do I maybe need a new green switch.It all come apart with six screws for getting into I removed the six screws but it looks complicated and I put it back together til I speak to someone any help or advice would be most greatful???? Alistair

-- excuse my typing as I have a form of parkinsons disease


8 replies so far

View PASs's profile

PASs

560 posts in 1726 days


#1 posted 528 days ago

Pictures….need pictures…the approach, the getaway, the Northeast corner…with circles and arrows….
What is the manufacturer (Laguna?) and model number?
Can you contact them and get support?
I went to the Laguna site and looked at a couple of manuals…but couldn’t see anything that would give a possible explanation.
I’ve had internal springs break in some switches which caused similar symptoms.
What sounds weird is that it sounds like the kill switch has malfunctioned/broken as well.
So although unlikely it almost sounds like both the kill and start switches have malfunctioned.
Unless you or someone you know has worked on switches it sounds like time for new ones.
Of course if they don’t work you can always take them apart before you replace them just to see if it’s an obvious fix.
I had a switch stop working once because it got sawdust in it….put a dust-tight cover on after I replaced it.

-- Pete, "It isn't broken, you just aren't using it right."

View needshave's profile

needshave

150 posts in 587 days


#2 posted 528 days ago

Alistar,

Who manufactured you’re band saw? The way you are describing it, sounds like a MiniMax. If so, the switch box should be covered with a clear flexible cover to keep dust out of the contacts. If it is one and the same, I can open mine up and see if I can help you. I believe the push buttons are merely operating a rocker switch inside the dust proof box. I have found Mini-Max to have a stellar customer service department and they will be happy to help you.l

View REO's profile

REO

598 posts in 701 days


#3 posted 528 days ago

sounds like the start switch contacts are closed all the time. the stop switch stops it because the contacts open when you push the switch and they stay that way because it has to be rotated to let them close. the start switch is in series with the stop switch contacts.

View TopamaxSurvivor's profile

TopamaxSurvivor

14721 posts in 2303 days


#4 posted 528 days ago

Do these switches operate a magnetic motor starter or are they manual and interlocked with one another?

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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SCOTSMAN

5347 posts in 2212 days


#5 posted 528 days ago

I’ll check it tomorrow and let you have a few pics yes it does have a kind of dust membrane protector.Thanks so far guys. Alistair

-- excuse my typing as I have a form of parkinsons disease

View JesseTutt's profile

JesseTutt

802 posts in 738 days


#6 posted 528 days ago

Electronics stores sell a spray called “Contact Cleaner” intended to clean switches. Open cover up and spray the innards of the switch. Give it a few minutes to dry and try it. Make sure that the electricity is turned off first.

-- Jesse, Saint Louis, Missouri

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lew

9992 posts in 2383 days


#7 posted 527 days ago

Alistair,
Even with the dust membrane, there can be a build up inside the switch. Remove the cover and try compressed air to blow out the dust. Might just fix it.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View SCOTSMAN's profile

SCOTSMAN

5347 posts in 2212 days


#8 posted 527 days ago

HERE IT IS A SAGITTARIO

http://img.photobucket.com/albums/0903/tybachdai/shop%20pictures/ee5dbcb8.jpg

-- excuse my typing as I have a form of parkinsons disease

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