Teledyne API M751H High Performance Zero Air Generator MAINTENANCE
07773A DCN6833 35
19. Wipe the ends of the columns. These are the surfaces which seal against the
o-rings.
20. Set the bottom of the columns into the lower manifold. Ensure that they are in
the grooves and not caught up on the edge.
21. Place the upper manifold on top of the two columns. Ensure that the columns are
in the grooves. (Wiggle the columns sideways to ensure that the columns are
trapped in the grooves.)
22. Replace the nuts and lock-washers on the three tie rods BUT DO NOT TIGHTEN
THEM.
23. Push down hard in the center of the upper manifold with one hand and finger-
tighten the nuts until you feel a soft resistance.
24. With a wrench, tighten each nut in turn, 1/2 turn at a time. This will ensure that all
the nuts are tightened evenly. If the nuts are tightened unevenly, the column o-
rings may not seal and you may cause damage to the sealing surfaces.
25. Examine the fit of the columns in the manifold groove one more time.
26. Re-attach the 4-way valve bracket.
27. Return the dryer to the 751H chassis and tighten the four captive screws.
28. Reconnect the two pneumatic fittings and the valve power cord.
29. Plug in and turn on the 751H.
30. Check the dryer for leaks (see Section 5.11).
If no leaks are detected, the 751H is ready for operation.
