AirSep MN138-1 H - Manual (Page 19)

13
MN138-1 Rev H
02/14
attached to coils for easier installation. ( Please refer to the Valve Wire Harness
drawings WH105-1 located on page C in the Appendix section of this manual as
needed)
Care must be taken when removing and installing valve coil retainer
clips.
10. Using 1/8-inch Allen wrench, remove mounting bolt securing the manifold to the
center section. Remove manifold assembly from compressor enclosure.
11. With the tubing still attached from the exhaust muffler and compressor, remove
the fittings and tubing located on the underside of the valve manifold using a
7/16-inch open end wrench.
12. Disconnect fittings and remove the sieve bed feed tubing from manifold using a
9/16-inch open end wrench.
13. Disconnect small tubing from both sides of the valve manifold.
Valve Manifold Installation
To replace the valve manifold, follow the steps below:
To follow this procedure easier, view the manifold from the front when reassembling
components to manifold. Equalization valve will be positioned in the front of manifold
when viewed this way.
1. Perform the valve manifold removal procedure in reverse order.
2. When installing the fittings from the sieve bed tubing, do not over tighten.
3. Remove original sealant tape from threads on fittings which will be installed to
underside of manifold. Apply new sealant tape to fittings before installation.
a. Fitting with braided tubing attached (compressor) must be installed to the
left underside of manifold. Fitting with tubing attached (exhaust muffler)
must be installed to the right underside of manifold.
b. Foam pieces should be in place over fittings before installing manifold to
compressor enclosure.
4. Valve manifold must be positioned properly before installation. When positioned
correctly, the front of the valve manifold will face towards the back of the
compressor enclosure, and will rest on the support pins on top of the enclosure.
5. When installing coils onto manifold valve stems, view manifold from the front.
a. The front valve stem is the equalization valve and its coil should be
installed having the wire terminals positioned on the bottom of the valve
stem. The other coils must be installed having their wire terminals located
on top of their valve stems.
b. The outside (feed) valve coils must be installed so their wire terminals are
pointing towards the front of manifold.
c. The inside (exhaust) valve coils must be installed so their wire terminals
are pointing towards the back of manifold.
d. Valve coil retainer clips must be installed correctly so that the open ends
are pointing downward on top of valve coil.
6. Periodic adjustment of the compressor enclosure may be required when
reinstalling into center section.