Rule mercury float switch installation

D

Donzi GT250

Petty Officer 2nd Class
Joined
Apr 22, 2011
Messages
110
I have a new/old style Rule mercury float switch for my bilge pump.
The question I have is what would the proper orientation of the mercury float switch should be.
It would seem that it would be best to install the switch so that the switch is perpendicular to the center line of the boat so that when accelerating and decelerating the mercury in the switch would not be able to move forward and back causing the bilge pump to go on and off during acceleration or deceleration.
Is this correct?
What is the proper installation orientation of a mercury float switch?
 
P

Pez Vela

Chief Petty Officer
Joined
Dec 4, 2004
Messages
504
Re: Rule mercury float switch installation

No. It doesn't matter. Connect your new/old float switch to your multimeter to test for continuity. Place it on the dashboard of your car. Use your best high school accelerating/decelerating techniques and check the results.
 
O

Outsider

Lieutenant Junior Grade
Joined
Apr 24, 2007
Messages
1,022
Re: Rule mercury float switch installation

What is the proper installation orientation of a mercury float switch?

There is no 'proper' orientation, it's whatever works in the space available. That said, common sense says mount it (and the pump) in the lowest part of the bilge that's accessible. Mine is mounted center-line and just forward of the drain. When dry, I doubt you have enough acceleration to activate the switch.
 
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