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Copyright 2003-2017, Dive Lab®., Inc. All rights reserved. TechTrnG 03101
STEP
PROCEDURES
INITIALS
6.
Check the
Demand
Regulator
Adjustment
Note:
If the Purge
Button travels
further than 1/8”
(3mm) before
gas starts
flowing, or has
a weak flow of
gas when fully
depressed,
adjustment of the
regulator is
necessary.
Guidance O&M
Manual
a.
Rotate out (counterclockwise) on the Demand
Regulator Adjustment Knob until a slight free
flow develops. Then rotate in (clockwise)
until the free flow stops.
b.
For masks equipped with a SuperFlow or
SuperFlow 350 regulator, slowly depress the
purge button to check for excessive travel.
The purge button should travel in no less that
1/16” and out no more than 1/8” (1.5-3.0mm)
before gas flow is heard. For masks equipped
with a 450 or 455 balanced regulator
depressing the flexible cover the cover should
travel approximately ¼” (6mm) before gas
starts to flow.
c.
Depress the Purge Button all the way, verify a
strong surge of gas. Pressing the flexible
cover of the 450 and 455 further than 1/4"
(6mm)
should result in a strong flow of gas.
d.
Ensure the Side Block
Emergency Valve is
closed
, and the
Bail Out Cylinder Valve is
open.
Log the cylinder pressure _____ psig.
7. Check the
Communications
Diver:
Perform communications check.
8. Check the Hot
Water Supply
(if applicable)
Tender:
Check the hot water supply connections. Ensure
topside supply has been switched to the diver and
verify flow to hot water shroud and suit (if used).
9. Check the Dry
Suit Inflation
Hose (if
applicable)
Tender:
Check the dry suit Inflation Hose Connection.
Ensure the dry suit Inflation Valve and Exhaust
Valve function properly.
10. Check the
Entire Rig
Tender:
Soap and leak check the Mask gas fittings and
connections including the EGS.
11. Check the
Diver’s Entire
Rig
Supervisor/Tender: Check adjustment/fit of
the entire rig, including the following (a-d):
a.
Diver’s Safety Harness
