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Battery and master contactor - ok to mount horizontally?

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jrevens

Joined: 21 Nov 2013
Posts: 34
Location: Arvada, CO

Posted: Wed Apr 30, 2014 8:45 am Post subject: Battery and master contactor - ok to mount horizontally?

Mounting position is definitely a consideration with some     contactors. There are units that are designed for horizontal     mounting, 

     or are position insensitive, but there are others that are not. The     Series 70 White-Rogers units, that have been very commonly 

     used in aircraft for decades are position sensitive. Here is a link     to some info: 

     http://www.emersonclimate.com/Documents/White-Rodgers/sell_sheets/R-4003web.pdf      

     This literature recommends dome, or cap, down. Depending on whether     the unit is used as a master or start "solenoid", some 

     recommend mounting dome up  These solenoid/contactors will seem to     work OK either way, but there is more potential wear 

     and possibility of binding or improper operation if they are     operated horizontally. 

      

              

                                  John   [img]cid:part2.03020806.01000602(at)comcast.net[/img]

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John Evens
Thorp T-18 N71JE (sold)
Kitfox SS7 N27JE (built & flying)

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