1.Turn air manual shut-off valve in junction box Off.

2.Press air button of syringe(s) until all residual air pressure is removed from the system.

3.Remove the top cover.

4.Disconnect the tubing (1) from the Master On/Off toggle valve (2).

5.While holding the threaded ring (3) that secures the On/Off Toggle Valve (2) to the case, loosen the jam nut (4).

6.Remove the threaded ring (3), then remove the Master On/Off Valve (2), jam nut (4) and lockwasher (5).

1.Place the jam nut (4) and lockwasher (5) on to the On/Off Toggle Valve (2) and place it in position in the bottom cover.

2.Place the threaded ring (3) onto the end of the On/Off Toggle valve and tighten.

3.Connect the 1/8" red tubing to the top (outlet) fitting and the 1/8" purple tubing to the end (inlet) fitting.