PS Magazine - TB 43-PS-724

PS, The Preventative Maintenance Monthly

ISSUE 724

MARCH 2013
PS Magazine - TB 43-PS-724 - Page 24 of 33
44
PS 724
MAR 13
± First±make±sure±the±cotter±pin±of±the±iris±valve±adjusting±screw±
is±not±sheared±off.±If±it±is,±the±pin±must±be±replaced±before±you±can±
adjust±the±valve.
± Adjust± the± airflow± by± inserting± a± screwdriver± through± the±
right± center± slot± of± the± precleaner± housing± into± the± adjusting±
mechanism.±
Gently
±turn±the±screwdriver±clockwise±to±decrease±
air±flow±or±counterclockwise±to±increase±airflow.
± If± you± don’t± feel± any± resistance± or± hear± any± clicks,± the± air±
regulator±is±bad±and±needs±to±be±replaced.±
± Acceptable±airflow±is±2.0±to±4.7±inches±of±water±(3.0±to±4.5±cfm).
Clockwise to decrease airflow, counterclockwise to increase
M2A2±Air±
Purifier…
Easy with Iris Valve
Caution Signs
for
All
OCCasions
muscling up on the iris valve on
the m2a2 air purifier either strips
the valve’s gears or jams it so
tight it can’t be adjusted.
here’s the
scoop…
it takes just a
little bit
of torque to adjust the
valve
correctly.
Safety hazards lurk in
every
corner of motor
pools and machine shops.
but a few
well-placed
caution
signs can
alert
soldiers to
danger
and
promote
a
safer
workplace.
the signs on the
next pages are
black and yellow,
except
for the
fire extinguisher
sign, which is
red
and white.
flip the
page to find
out more…
724 44-45.indd
1-2
1/29/13
3:00 PM
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