[TowerTalk] HyGain HG-70HD / HG-EW Winch Limit Switch

[Bob Segrest]

Hi Jim,

 

I managed to figure out the part numbers and as other may be interested at some point…

 

The switch assembly is actually an assembly of four (4) separate Cutler-Hammer parts.

 

     E50RA     Receptacle

     E50SA     Switch Body

     E50DR1    Side Rotary Operating Head, Standard spring return

     E50KL220  Switch Operator, 9 inch stainless steel

 

The receptacle is the wired housing that gets bolted to the supplied bracket on the tower.  It is also where the flex cable from the controller is connected via a ½ inch NPT fitting.  This connection is on the top of the assembly as designed by Hy-Gain.  I suspect that the seal on this connection was compromised during installation (twisted loose, no longer water tight) and allowed moisture to fill the switch which subsequently froze fracturing the gasket seal causing the failure.  The result is a corrosion frozen mess.  I plan to epoxy seal the fitting or invert the assembly to prevent this in the future.

 

The switch body mounts on the receptacle and is as the name implies the electrical switch.  The operating head is the mechanical component that transfers the motion of the switch operator (an adjustable bracket and rod that clamps onto the shaft of the rotating head) to the electrical switch.

 

The assembly is mounted so that the limit switch is engaged when the largest moving section of the tower is fully extended so that the controller can prevent the winch from over extending the tower.

 

I hope this helps…

 

Bob

KO2F

 

 

From: jimk0xu at gmail.com [mailto:jimk0xu at gmail.com] On Behalf Of Jim Rhodes
Sent: Wednesday, August 13, 2014 8:28 PM
To: Bob Segrest
Subject: Re: [TowerTalk] HyGain HG-70HD / HG-EW Winch Limit Switch

 

I would appreciate any information you get. I have got a winch on my hg54 and it would be comforting to have limit switches.