My New Gift

Signed-In Members Don't See This Ad
J

jlmort1980

Member
Joined
Oct 5, 2010
Messages
103
Location
Wisconsin
So, I have been looking for a vacuum pump and really didnt want to spend the money on one. So the other day I was asked to get rid of a piece of equiptment at my EMS garage. So I looked at it and started thinking.... Disasembled it and this is what I got. Its out of an old medical suction unit. The unit worked but the battery was shot. Now I just have to figure out how to get it setup and how to get power to it. Anyone any suggestions? I know it works just have to get a correct power supply.
 

Attachments

  • 100_1055.jpg
    100_1055.jpg
    65.7 KB · Views: 278
  • 100_1056.jpg
    100_1056.jpg
    64.1 KB · Views: 229
Signed-In Members Don't See This Ad
KBs Pensnmore said:
What Voltage is the pump?
You could try a transformer to drop the power down to whatever voltage the pump is!
Regards Kryn
Click to expand...

The pump says 12v on it and I know the battery that was in the unit was 12v, but everything I have tried has just made it hum. And I personaly used it before so I know it works, just cant seem to find the right combination.
 
Have you tried switching polarity? You have a PM DC motor and the pump only runs one direction. If you have it hooked backwards, the pump will not allow the motor to turn. I always have trouble remembering Dc but I believe Red is positive. There is a 50/50 chance I am wrong there.
Charles
 
ctubbs said:
Have you tried switching polarity? You have a PM DC motor and the pump only runs one direction. If you have it hooked backwards, the pump will not allow the motor to turn. I always have trouble remembering Dc but I believe Red is positive. There is a 50/50 chance I am wrong there.
Charles
Click to expand...


I have tried switching polarity as well, didnt seem to make a difference. Had the same effect either way.
 
pensmyth said:
Check with someplace like Radio Shack for a converter to convert 120 house current to 12 V.
Click to expand...


I have a couple different converters and have tried them. I think the trick is trying to find one that puts out the correct amperage. Easier said then done....
 
DC votage. Red is+ and black is- Are you trying to start this under pressure??? Are the valves closed??? The pump needs to start with no head pressure and build up slowly. If that all checks out maybe you can pop that front cover off and see if you can disconnect the motor and run that seperately to see if the motor is good. What does the label on the motor say??
 
You really need to directly attach the red lead to the plus terminal and the black lead to the minus post of a fully charged deep cycle battery with at least 750 CCA.

The problems sounds like you are not delivering enough current to spin this pump. Ever notice that EMTs never turn off the ambulance when on a call? That's partly because all of the heavy duty equipment drains all of the current out of non-charging batteries.
 
One other thing to check.... Look for a "fitting" that says "oil" or has a drawing of a drop of oil one it.

Most heavy duty pumps such as this require pump oil. Better pumps have a "lock out" function that will not allow the pump to operate without pump oil.

The same oil that you put into the pump of a pressure washer will work fine and can be purchased in the garden section at Home Depot. It will be labeled "pump oil" and it is relatively inexpensive.

I hope this helps!
 
You must log in or register to reply here.
Back
Top Bottom