Help needed - what type of power switch on drill press.

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by mafe posted 06-05-2014 09:02 PM 12929 views 0 times favorited 14 replies Add to Favorites Watch
View mafe's profile


13202 posts in 4205 days

06-05-2014 09:02 PM

Hi guys and girls,

Some of you know my little drill press, just a cheap small standard one, but it has a history of a friend extending the column another friend sending me a adjustment screw and me making table, dust control and more for it, so I will like to keep it alive if possible.

Here it is.
It is…
And if you look careful you might see that I use a clamp for power switch…
Not really good.

This is the switch.
It has a relay inside.


Here info on the machine.

So what is the problem or question MaFe!

First of all the company stopped selling parts for it and my switch are dead… That’s a problem.

Then I ordered some switches on E-bay, but when they arrived I found out they were only switches, no relay…

So question!

Do I need a relay for a drill press or can I just use the switch?

Answers will be taken with gratitude, thanks.

Best thoughts,

-- MAD F, the fanatical rhykenologist and vintage architect.

14 replies so far

View mafe's profile


13202 posts in 4205 days

#1 posted 06-05-2014 09:07 PM

View David Kirtley's profile

David Kirtley

1286 posts in 4114 days

#2 posted 06-05-2014 09:34 PM

I don’t see why not. I don’t know what kind of relay it would use unless it has a little light like mine to turn on. The switch itself should do just fine.

-- Woodworking shouldn't cost a fortune:

View EEngineer's profile


1137 posts in 4730 days

#3 posted 06-05-2014 09:44 PM

From the brief description, I don’t even know what your problem is for sure.

Now, is the problem just that the switch will not latch? Is that why you need a clamp to hold the switch closed?

Obviously a European drill press, are you running 240V, 3 phase? I think that is the standard across the pond. If so, then I suspect the switch just connects 2 phases to the relay coil and that the relay contacts then switch all three phases ON to the motor. Do you have any wiring diagrams for this unit?

-- "Find out what you cannot do and then go do it!"

View MrUnix's profile (online now)


8631 posts in 3315 days

#4 posted 06-05-2014 09:48 PM

If it has a relay, it’s probably a magnetic switch for safety.. but can’t say I’ve ever seen one on a benchtop drill press before. Using a normal switch would be just fine IMHO.


-- Brad in FL - In Dog I trust... everything else is questionable

View lew's profile


13366 posts in 4872 days

#5 posted 06-05-2014 10:25 PM

I pulled this from the Guede website. Maybe someone can figure out what can be used=

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

View Jim Jakosh's profile

Jim Jakosh

26297 posts in 4222 days

#6 posted 06-05-2014 10:51 PM

Hi Mads. Here is what I see from the plate on the drill press and the schematic from Guede:
it is 230 volt motor. It looks like the blau 4 wire and the braun 8 wires are both hot wires which go directly to the motor.

You would need just a double pole single throw 10 amp switch that would make and break the two hot wires and the ground would be always connected( shown as the ground hooked to #11). The schematic shown must be all that is inside your switch. That switch you bought should be able to be hooked to the Blau4 and the Braun 8 wires that go to the motor and it is a 7 amp switch so it will handle 350 watts okay. Being that you got the switch from the UK, I would think it is a double pole single throw 230 V switch.

Have you tested it with a VOM meter to see if you push the ON button, that the contacts stay connected?

...................Good luck my friend. I wish you lived down the street. I’d walk over and test it out for you…...................Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View TheFridge's profile


10863 posts in 2602 days

#7 posted 06-05-2014 11:41 PM

^ that is correct. Double pole switch will work just fine. Most drill presses don’t have a relay.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Shawn Masterson's profile

Shawn Masterson

1325 posts in 3065 days

#8 posted 06-06-2014 01:43 AM

dude a light switch will work. I have had a 15 amp light switch on my jointer for over 8 years. Thats the way it came.

View Slemi's profile


118 posts in 2657 days

#9 posted 06-06-2014 02:01 AM

Have You tried to take it apart. It might be just some loose cable. Otherwise just get some SPST relay with 230V coil and a little wiring and you’re good to go.

View Dutchy's profile


4131 posts in 3285 days

#10 posted 06-06-2014 06:09 AM


I have a same machine (different brand) On tuesday a,m back from a little break with my wife. When you like I will take a look inside mine.


View robscastle's profile


7948 posts in 3320 days

#11 posted 06-06-2014 08:35 AM

The Switch.
Its a NVR No Volts Release
How it works is:-
a. If there is a power failure i.e. black out the relay will release and drop the power path to the machine.
This is a safety feature to prevent uncontrolled start upon the power being restored.
b. Upon a person physically pressing the green start button the switch operates a relay the relay closes and applies power to the drill.
No matter how many times the switch is pushed is is redundant.

To power off the drill either push the Red button or drop the power
Any switch willdo its just that if you turn on the switch andd then plug it in (for whaterver reason the tool will start)

NVR no voltage no switch
Normal switch, can be switched on regardless of power

-- Regards Rob

View mafe's profile


13202 posts in 4205 days

#12 posted 06-07-2014 09:15 PM

Hi all,
Thanks for all the answers.
I will try to take a Picture of the inside, but has not had time to go to the shop.
Think I will just give it a go with the switches I bought.
So I just have to figure out the wirering, here the diagram will come in handy, thanks.
(I tried to look my self on the web for a diagram or manual, but coud not find it – lol).
Thanks again,

-- MAD F, the fanatical rhykenologist and vintage architect.

View Roger's profile


21054 posts in 3920 days

#13 posted 06-11-2014 12:36 AM

I wish you luck Mads. Electrical stuff can be a pain sometimes, well, all the time.

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. [email protected]

View mafe's profile


13202 posts in 4205 days

#14 posted 06-11-2014 10:48 PM

Hi guys,

So I was in the shop today and opened up the bastard.

There were only four wires going to the relay.

So tested the action and found out it worked just as two parallel switches.
So I could simply replace it with the other type wire by wire.
Simple and easy!
And since I know now the relay is not a must, I will feel comfortable, thanks.

So now running with the new switch.

Thanks for all the info and helpful advice,

-- MAD F, the fanatical rhykenologist and vintage architect.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics