A few weeks ago a picked up a B & S Techmaster 824 surface grinder, was not under power but the price was good. It was retro fitted with a A-B SLC-500 PLC. I could not get the cross feed to work, replaced a Triac output card and the shorted out coil on the hydraulic solenoid. Cross feed now works in automatic mode, BUT will not move otherwise. I can move it with the hand wheel, but not the forward/back buttons. Should I be able to do this?
Table hand wheel does not dis-engage/re-engage properly all the time, I need to look into this too.
Over the wheel dresser does not move either, might just be stuck, was never used as they had a diamond wheel on the machine.
Also the grind wet/dry switch does not turn on/off the coolant pump (pump is wired direct to the spindle contactor). On the schematic to the machine it shows the switch controls a solenoid marked "base oil shutoff" I need to lift the table off to see where that oil line goes. curiosity is killing me.
any suggestions appreciated.
pictures at:
I only have a few photocopied pages from the manual, so I can't look there. I do have complete doc's on the PLC convertion.
Thank You, Randy
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