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Author Topic: Strong/Potts platter microswitch Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 08-16-2004 08:16 PM                     Ideally what you want is a micro with a .5 oz on force, even I'm not sure why I would reccomend a .98 oz force micro. The .5 oz works out better for estar base film and the film will not wrap back around the P.O.H. at all. In fact it feeds out so smoothly with the .5 oz switch that one would think its linear feed. Here is a link to pretty much the switch we use although I'm not 100% sure this is the exact number. Just pop out the spring under the lever and you have a .5 oz actuation micro switch. http://catalog.sensing.honeywell.com/datasheet.asp?PN=BZ-2RW8244-A2 Tommrrow when I'm at work I'll look at one for the exact Honeywell number and post it here. We get them in 100 quantity from a local Electrical Distributer thats the Honeywell Distributor for this area. Mark @ CLACO  |  IP: Logged Ken Layton Phenomenal Film Handler Posts: 1452 From: Olympia, Wash. USA Registered: Sep 1999 posted 08-16-2004 11:11 PM                     The 6X284 is a 15 amp version of the 6X289. Specs are the same except for contact rating.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 08-17-2004 11:36 AM                     The Honeywell number for the switch is BZ-RW8435-A2 for those that are interested. Remove the spring under the lever before using them. Link to data sheet.... Link Mark @ CLACO [ 02-12-2007, 12:25 PM: Message edited by: Adam Martin ]  |  IP: Logged John A. Parker Jr. Film Handler Posts: 21 From: Brevard, N.C., USA Registered: May 2003 posted 08-17-2004 08:06 PM                     I ordered the exact switch from Newark. Their part no. is 23f2293. The cost per switch is 4.82 each. Also if you put a 10 ohm 25 watt resistor across the switch, It will last longer because of less inrush current. John A. Parker Jr.  |  IP: Logged Mike Babb Master Film Handler Posts: 250 From: Norwich UK Registered: Jul 2002 posted 08-18-2004 06:02 PM                        John, doing a little searching online I found the switch you mentioned isn't the same as Mark's switch. The contact rating is 4 amps. The one Mark listed is in the Newark catalog as 23f4062. $14.37 and discounts in larger quantities. Sorry to beat this topic to death, I just want to make sure I find the right one because we have these platters all over our area. We've used some Honeywells and some Omrons and I appreciate the feedback from everyone.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 02-12-2007 11:00 AM                 It has been 907 days since the last post.  |  IP: Logged Barry Floyd Phenomenal Film Handler Posts: 1079 From: Lebanon, Tennessee, USA Registered: Mar 2000 posted 02-12-2007 11:00 AM                        I need to replace the microswitches on 2 of my Strong AP3 platter brains. Reading thru the posts above, the Grainger switch is "close" but not exact? How hard are these to install?  |  IP: Logged Dennis Benjamin Phenomenal Film Handler Posts: 1445 From: Denton, MD Registered: Feb 2002 posted 02-12-2007 12:35 PM                        Not hard at all.....  |  IP: Logged Dustin Mitchell Phenomenal Film Handler Posts: 1865 From: Mondovi, WI, USA Registered: Mar 2000 posted 02-12-2007 12:41 PM                     If you buy a non-stock microswitch I believe you need to remove the spring, I am not sure though. That info is either in a post or Mark G. will be along shortly to let us know. Anyhow, as Dennis said, very easy. Just put it back together the way you took it apart. You'll need to make sure the microswitch is aligned properly, so before you tighten it down you'll have to shift it around a bit. The right alignment will be when the blade 'clicks' to have the arm of the brain at the midpoint of its right-left travel. Hope that made sense.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 02-12-2007 01:26 PM                        Even with the spring removed, I have not found an "acceptable" replacement; too stiff. Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-12-2007 06:09 PM                     Louis, There is a pretty acceptable switch made by Honeywell that I pointed out above that allows the platter to feed unbelievably smooth..at least this is as good as they get working from a stock switch. Lifespan has been about two years on them. It has about 1/4 the amount of spring tension as the normal switch from Strong, and about 1/4 the price in 100 quantity. My sucess with them has been 100%. The main thing though is that are these platters even acceptable at all ???? Mark  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 02-12-2007 11:43 PM                     I must replace a good amount of switches each year since I've got 32 A(P)-3 units and 64 brains to tend to ... ..but, that's good to know about the surge resistor to put across so I can make these switches last longer (dang, I know all about the ying and yang about phase control brains, but love them ten times better than microswitch brains any day of the week....) Monte  |  IP: Logged Dustin Mitchell Phenomenal Film Handler Posts: 1865 From: Mondovi, WI, USA Registered: Mar 2000 posted 02-13-2007 10:10 AM                     I agree Monte, I know some here have had problem with phase controls but since replacing most of the carbon switches on my alpha platters almost 7 years ago I haven't had a single phase control fail. If I was buidling a new cinema and was going to use Strong platters (not a given mind you) I think I'd use phase controls despite the extra expense. Even with regular replacement you're going to have a microswitch fail early/get stuck and cause a brainwrap once in a while.  |  IP: Logged Marc Hansen Film Handler Posts: 93 From: Seattle, WA, USA Registered: Dec 2000 posted 02-13-2007 10:17 AM                     If you are running phase control platters and you have a phase control fail can you drop a microswitch payout in its place? Would you have to adjust/retime the platter?  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-13-2007 12:23 PM                     quote: Marc Hansen If you are running phase control platters and you have a phase control fail can you drop a microswitch payout in its place? Would you have to adjust/retime the platter? Yes you can retrofit if you get the hardware kit to install the micros from Strong, part number is 3610. The hardware kit is very inexpensive. The Phase Control is one of the worst control devices anyone ever came up with excepting the carbon switch. I converted 6 platter systems to micro a couple of weeks ago. Time what.... if you time it today it will be different tommrrow. Thats the main reason the Phase Controls don't work well. I have weeded out most of the phase control modules in my service area and doing so has made my customers VERY happy. Mark  |  IP: Logged

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