76
© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130115001
SuperLite
®
27
®
pouch. The “Tool Kit with Pouch” is Part #525-620.
This kit is included with every new Kirby Morgan
helmet and band mask equipped with the SuperFlow
®
350.
7.8.1 Demand Regulator Test for Correct
Adjustment, Fully Assembled
To maintain optimum performance of the demand
regulator, it should be checked for proper function
and adjustment prior to commencement of diving
each diving day.
Check the regulator for adjustment and proper func
-
tion with the assembly complete, and supplied with
a breathing gas supply pressure of 135 to 150 p.s.i.g.
NOTE: 135 to 150 p.s.i.g. over ambient is the stan-
dard supply pressure to be used when adjusting all
KMDSI helmets and band-mask demand regula-
tors. See Chapter 2 for tables that list the proper
supply pressures for specific depths.
NOTE: When storing the helmet for any length of
time, ensure that the regulator adjustment knob is
turned “out” fully counterclockwise to avoid stressing
the bias springs. This will prolong the life of both the
inlet valve, seat, and bias springs.
1) Ensure the supply pressure is properly adjusted to
135 to 150 p.s.i.g.
2) Rotate the adjustment knob out counterclockwise
slowly, until a slight steady flow develops.
3) Slowly rotate the adjustment knob in clockwise,
until the free flow stops. Lightly depress the purge but
-
ton several times to ensure the gas flow has stopped.
4) Lightly depress the purge button. There should be
between 1/16” and 1/8” free travel in the button before
gas flow starts. When the button is fully depressed, a
strong surge of gas must be heard.
5) If the purge button travels less than 1/16” or greater
than 1/8” before free flow is heard, the demand regula
-
tor requires internal adjustment.
7.8.2 Inspection of Regulator Body Interior
Tools Required:
1/4 inch Flat Blade Attachment on Torque Screwdriver
1) On the demand regulator remove the demand regu
-
lator clamp by removing the clamp screw.
2) Lift off the demand regulator cover and diaphragm.
3) Clean the diaphragm with the soap solution, per "6.3
General Cleaning & Inspection Procedures" on page
55 and wipe dry. Inspect the diaphragm for holes,
tears or any signs of deterioration by holding it up to
a white light and stretching and pulling. Check for a
good bond between the metal disc and the silicone
Remove the demand regulator clamp.
Use only replacement diaphragms manu-
factured by Kirby Morgan. Use of other
diaphragms may degrade performance
and may cause increased breathing re-
sistance. This can lead to fatigue and the
inability to work at full capacity.
WARNING
membrane. Replace diaphragm if any doubt exists.
4) Inspect the interior of the demand regulator body
for damage, corrosion and cleanliness. Clean the inte
-
rior of the regulator body if necessary per "6.3 General
Cleaning & Inspection Procedures" on page 55.
5) Reinstall the diaphragm, cover, and clamp. DO
NOT lubricate the diaphragm. Tighten the clamp
screw to the recommended torque to 12 inch pounds
using a torque screwdriver.
NOTE: Older regulator clamps, when properly
torqued, had a gap of approximately 1/32” to
1/16” between the interior retaining clamp sur
-
faces when fully tightened. All new clamps when
properly torqued, have little or no gap between
the interior retaining clamp surfaces.
