Register control

A register stop key acts as a switch.
Each stop key controls one magnet. In the ‘on’ position, low-voltage current is passed to a magnet located in the windchest.

The preset system has two magnetic coils (S) .
This system can also turn the stop key off!

Putting a register stop key (RW) in the lowest position directs the positive current to the solenoid.
This clears the way for the wind pressure to pass via the wind channels (LG) (lead or plastic tubing) to the register valve.

Airtight chest containing the wind pressure for the register relay control.
Lever (H) is operated by a membrane/bellows (M).

  Part of a Standaart electro-pneumatic
  relay as used in Schiedam.
  In Dordrecht it has been replaced by Solid State.