Confused Monotype Pneumatics, Part 2

On removing the dummy plate on my Unit Adding valve base and testing individual air lines, I have determined that:

  1. This valve uses lines I, K, N, 0005, and 0075 (not J, K, N, 0005, and 0075 as my manual states).
  2. I had swapped two of the lines coming to this plate, causing my I and 0005 lines to be interchanged.

To fix problem number 2 I had to remove the mounting plate, disconnecting all the air lines, and re-mount it with the lines coming to the correct ports. I had tried just removing the two swapped lines but because of the way they were crossed I was unable to reposition them with all the other lines still in place.

Fortunately I found installing the plate much easier this time, perhaps because I inadvertently used a slightly different procedure.

On tracing all the lines I also found that my previous statement about the mould signalling (that it uses G and H) was incorrect; it actually uses H and J, which still does not match what the manual says.

I now have the rear pin block cover off and all the pins out for cleaning; once this is all reassembled and the remaining control valves are reinstalled I should find that all these airpins operate properly.


Posted in Equipment Acquisition, Repair, and Maintenance, Kevin, Monotype Composition Caster

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