Genesis Advanced Technologies ATLAS & YUKON GRXXX & User Manual

Page 27

Service & Repair Manual

16. Apply a medium blade screwdriver to engage the slotted

head of the orifice, and turn it clockwise approximately 5
full revolutions. Then, grasp the screwdriver by the shaft,
rather than the handle, for best sensitivity of touch. Con-
tinue turning the orifice very slowly while closely observing
the locknut on the end of the poppet (see Fig. 18). STOP
turning the orifice when the locknut begins to move slightly.
This will indicate that the orifice has made contact against
the LP seat.

CAUTION: Do not continue to turn the orifice further be-
yond the point where it makes contact with the low pressure
seat. Doing so may damage the LP seat or sealing surface
of the orifice, requiring their replacement, and can also re-
sult in an incorrect adjustment of the second stage.

17. Lay the diaphragm(3) inside the case, directly over the

lever, with its raised surface facing up.

18. Fit the diaphragm cover(2) inside the case so that it seats

directly over the diaphragm. Adjust as needed to align the
logo parallel with the inlet coupling.

19. Mate the cover ring(1) over the diaphragm cover and into

the case, and turn it clockwise by hand until snug. Be
careful to avoid over-tightening.

20. Install the mouthpiece(12) onto the mouthpiece tube of the

case, with the extended ridge facing up to accommodate
the natural overbite of the human jaw (see Fig. 19). Fit a
tie-strap(14) over the mouthpiece with the locking tab
facing toward the inlet coupling, and cinch it completely
snug. Snip off the excess strap that extends outside the
locking tab.

▼

After completing the reassembly of the second stage,
proceed to Section 6 – Final Testing

Fig. 18 – Orifice Preliminary Setting

observe locknut

Fig. 19 – Orthodontic Mouthp iece Orientation

extended ridge