Teledyne API M701H High Performance Zero Air Generator MAINTENANCE
06712B (DCN5875) 6-9
6.9 Changing The 4-Way Valve (in the Regenerative Dryer) 1. Remove the Regenerative Dryer from the chassis as described in Section 6.8 above.
2. Disconnect the two tubing connections and the electrical connection to the 4-way
valve.
3. Remove the 4-way valve bracket from the regenerative upper manifold.
4. Remove the 4-way valve from the bracket.
5. Attach a new valve, complete with tube fittings and muffler(s).
6. Attach the bracket to the upper manifold.
7. Connect the electric cable and two pneumatic fittings.
8. Re-install the scrubber in the M701H chassis and tighten the four captive base
screws.
6.10 Replacing The Shuttle Valve (in the Regenerative Dryer) It is not necessary to remove the Regenerative Dryer from the M701H chassis.
The Shuttle Valve is integral to upper manifold assembly. To replace the Shuttle Valve
replace the upper manifold assembly (P/N 06695). Refer to Section 6.8 steps 1,2,3,5, 6,
7, & 18 through 23.
6.11 Leak Check .
WARNING
ENSURE TO UNPLUG THE POWER CORD PRIOR TO
PERFORMING ANY LEAK CHECK PROCEDURE
1. Power off the unit and unplug the power cord.
2. Cap the exhaust on the rear panel and the regen dryer.
3. Disconnect the line from the T-connector threaded into the outlet filter to the dew
point sensor, and cap that fitting as well.
4. Plug in the power cord, power on the unit, and allow it to run until the pump shuts off
on its own (now it’s pressurized).
5. Turn off the power switch and wait five minutes. The reading on the front panel
pressure gauge should not change.