Time to clean The Forward Off Reverse Switch (FORS).
I found a PDF leaflet online showing wiring diagrams and a parts list for this switch. My Myford M type lathe has the original Dewhurst reversing switch fitted onto .
There must be a way of wiring the Dewhurst stop switch back to the NVR I haven’t dug out my circuit diagrams yet (my breakfast cuppa tea is. I wired this in to a Dewhurst reversing switch as per the wiring diagram in the Myford manual, but when I tried to start the motor the RCD in the.
I wired this in to a Dewhurst reversing switch as per the wiring diagram in the Myford manual, but when I tried to start the motor the RCD in the. Dewhurst switch wiring diagram schematron.orgering.Jan 01, · You Are Here: Home > DIY Forum Home > DIY and Home Improvement Forums > Electrics Forum > Lathe Wiring, Motor to Dewhurst Fwd – Rvse Switch; Lathe Wiring, Motor to Dewhurst Fwd – Rvse Switch. 6 posts • Page 1 of 1.
by maximat» Sun Dec 30, pm. How do all, Hope Christmas was a safe one for all of you DIY people.
I have a Myford super 7 with a Brook,Crompton,Parkinson w single phase motor. I wired this in to a Dewhurst reversing switch as per the wiring diagram in the Myford manual, but when I tried to start the motor the RCD in the house tripped.
Upon firther inverstigation of the motor internal wiring, i see two fixed links between terminal AZ-Z. I would expect the resistance of the main winding will be between 5 and 10 ohms and the start winding between 10 and 20 ohms. (For connecting it up to the reversing switch it does not matter which is which.) On the Dewhurst switch connect live and neutral VIA AN NVR SWITCH to terminals 1 and 3 (It does matter which way round.).
Sep 10, · Can anyone help with a wiring diagram for a Dewhurst drum switch connected to a motor with A and Z connections. I am assuming A is the main winding.
Aug 30, · Turns out the drum switch is likely the problem. Two of the contacts had been arcing and were burnt and pitted. Also there is pretty good wear in the switch and the contact arms seem to be bent.Myford M type safety warning (Dewhurst switch)Dewhurst switch wiring diagram – RC Groups
