© MMXV Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 150205001 INSTL-5
455 Balanced Regulator Installation Guide Installation of the 455 Balanced Regulator
2) Push the O-ring end of the bent tube assembly
into the regulator nipple tube. Slide it in until
the side block end is aligned with the threads for
the mount nut.
3) Be sure the new Teon®O-ring is in place on
the side block end of the bent tube, then engage
the threads to the side block and hand tighten.
4) Start the “regulator to bent tube” mount nut
onto the nipple tube of the demand regulator and
run it up by hand as far as it will go and hand
tighten.
5) Using a torque wrench, tighten the bent tube
assembly nut onto the side block and tighten in
accordance with the torque specication found in
the correct Table (correct model) of the manual
Appendix. See Appendix Contents: Torque Specs
starting on page APNDX-19.
6) Install regulator mount tube sealing O-ring
all the way. Install regulator mount nut, mak-
ing sure orientation is correct. Using a torque
wrench tighten in accordance with the torque
specication found in the correct Table (cor-
rect model) of the manual Appendix. See Ap-
pendix Contents: Torque Specs starting on
page APNDX-19.
7) Make certain the regulator end of the bent
tube is threaded onto the regulator (nipple tube)
far enough, by lightly applying torque to the hex
nut on that end. When a small amount of resis-
tance is felt, lock it into place with the jam nut.
Tighten the bent tube to the proper torque value.
8) Hold the hex on the bent tube with a wrench
and tighten the jam nut against it with a torque
wrench. See “Torque Specs” on page APNDX-19
for correct torque.
1.2.2 Oral Nasal Mask and Microphone
Installation
1) Snap the oral nasal over the regulator mount
nut. Take extra care to make sure the mask has
snapped into position all the way around the
mount nut.
2) Reinstall the microphone.
1.2.3 Nose Block Device Replacement
1) Prior to reassembly, lubricate the two o-rings.
2) Slide the shaft through oral nasal mask in the
helmet or mask shell.
Install the nose block
device through the interior
of the oral nasal mask.
3) Place both o-rings on the shaft, followed by the
packing nut and the knob.
4) Tighten the packing nut until snug. Do not
