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Author Topic: Strong/Potts platter microswitch Jason Black Phenomenal Film Handler Posts: 1723 From: Myrtle Beach, SC, USA Registered: Nov 2000 posted 01-14-2004 09:43 AM                        For some of you 'in the know' moreso than myself, I pose this quesion.. I called one of my suppliers this morning to find out if the 12 microswitches I rec'd this morning had the .1 or .5 oz spring in them. He stated that there shoudl not be a spirng in them at all, but he would call the manufacturer and check the specs. This is the info printed on the switch in front of me... A-20GV-B7-K (Made in Japan) 20A 120/250/480V 1HP.125VAC 2HP 250VAC 1/2A 125VDC 1/4A 250VDC I hope that I'm not mistaken in the fact that this is suppposed to have a spring loaded return mechanism.... Anyone?  |  IP: Logged Ken Layton Phenomenal Film Handler Posts: 1452 From: Olympia, Wash. USA Registered: Sep 1999 posted 01-14-2004 09:59 AM                     You have the .5 switch. Be sure to pop the spring out from under the lever and discard the spring. For everyone's info here is the switch cross reference from Grainger's: Omron # A20GV-B7-K is Grainger # 6X289 (around $6.50) Omron # Z15GW-B7-K is Grainger # 6X284 (around $6.25)  |  IP: Logged Jason Black Phenomenal Film Handler Posts: 1723 From: Myrtle Beach, SC, USA Registered: Nov 2000 posted 01-14-2004 10:59 AM                        Ken, Thanks for the info. From now on, I'll get these locally at Graingers. I'm paying $12.50/each right now from my vendor. BTW, Shoudl the spring be visible? I don't recall seeing a spring situated under the paddle/trigger mechanism...  |  IP: Logged Ken Layton Phenomenal Film Handler Posts: 1452 From: Olympia, Wash. USA Registered: Sep 1999 posted 01-14-2004 11:36 AM                     As they come new out of the box there is a spring under the lever. Maybe your vendor already removed the spring?  |  IP: Logged Jason Black Phenomenal Film Handler Posts: 1723 From: Myrtle Beach, SC, USA Registered: Nov 2000 posted 01-14-2004 05:17 PM                        This could be the reason they stated that there was not supposed to be a spring in the first place. His comment makes more sense now... Thanks Ken!  |  IP: Logged Chris Hipp Phenomenal Film Handler Posts: 1462 From: Mesquite, Tx (east of Dallas) Registered: Jul 2003 posted 01-15-2004 12:49 AM                     I might be sounding stupid here but which micro switches are you replacing? I have strong platters and in 2 years have not had one go out. The platters are about 6 years old.  |  IP: Logged Tom Wienholt Master Film Handler Posts: 371 From: Towson, MD, USA Registered: Dec 2002 posted 01-15-2004 01:22 AM                     The microswitch on the center-feed.  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 01-15-2004 03:52 AM                        Chris - some of these control plates have an optical control unit which they call "phase control". You can see the LED, photocell and phase mask when you look inside the little black box. Maybe you have these.  |  IP: Logged Chris Hipp Phenomenal Film Handler Posts: 1462 From: Mesquite, Tx (east of Dallas) Registered: Jul 2003 posted 01-15-2004 10:07 AM                     Yeah, I have the brains with the leds/solar cell  |  IP: Logged Robert D. LaValley Film Handler Posts: 58 From: Florida Registered: Aug 2003 posted 01-18-2004 06:36 PM                     Can you upgrade from micro-switches to leds and solarcells on potts platters?  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 01-18-2004 06:40 PM                     Robert, I did.....I used a Phase control with the CFS (same as the older Potts) and it works great. However, you have to be very careful about platter timing if the other dishes are still on Micros.  |  IP: Logged Dustin Mitchell Phenomenal Film Handler Posts: 1865 From: Mondovi, WI, USA Registered: Mar 2000 posted 01-18-2004 10:38 PM                     Depending on the cost of the phase control boxes it seems it would make sense for those replacing micros every 18 months to upgrade. Not only are phase controls more reliable they also give a smoother payout.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-18-2004 10:41 PM                     I prefer the micro switch to this day less grief and fewer thrown prints  |  IP: Logged Ken Layton Phenomenal Film Handler Posts: 1452 From: Olympia, Wash. USA Registered: Sep 1999 posted 01-18-2004 10:43 PM                     Robert: Yes, there is an upgrade kit to change the micro switch control plate to a phase control. It's part number 2430 (sells for around $120 list price) and it does one control plate. I would advise you to change all control plates on a platter over to phase control. Don't mix 'n match microswitch and phase control plates on the same platter system or you'll have motor timing problems. The kits can be purchased thru any Strong/Potts dealer.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-18-2004 11:46 PM                     Also some of the motors have the diode in reverse polarity for use with the pahse control and then they will not work  |  IP: Logged

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