EOS SERVICE PROCEDURE 12-2810-R02 (10/3/10)
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12
FINAL ADJUSTMENT AND TESTING
NOTE:
Adjustment
and
testing
of
the
Eos
second
stage
is
done
with
an
inlet
Intermediate
Pressure
of
140
psi
(+/‐
3
psi)
and
supply
pressure
of
3000
psi.
1.
Connect the second stage
LP Swivel Hose (39)
to a LP Port of a properly adjusted first stage; connect a LP QD Inflator
Hose to another LP port. Install port plugs to seal all the other ports of the first stage.
2.
Connect the first stage to a pure supply air source of
3000 psi
(207 BAR)
. Connect a calibrated Intermediate Pressure
Gauge
to
the
LP
QD
Inflator
hose
(make
sure
that
there
is
an
overpressure
relief
device
connected
to
the
IP
Gauge
to
relieve
pressure
in
excess
of
175
psi).
Slowly
open
the
supply
valve
to
pressurize
the
regulator,
purging
the
second
stage
several
times
to
cycle
the
first
stage
to
stabilize
the
IP
(Fig. 44)
. Check the IP Gauge to insure that the
intermediate pressure is
140 psi (+/‐ 3 psi)
.
NOTE:
If
the
Intermediate
Pressure
is
other
than
recommended,
readjust
the
first
stage
IP
to
specification.
If
necessary,
refer
to
the
Trouble
Shooting
section
of
the
first
stage
to
determine
possible
cause
and
resolution.
Fig. 44
Fig. 45
3.
Prior to Adjusting the second stage, check the following items: The
Front Cover/Cover Ring (1, 2)
on tight and secure;
the
Adjustment Knob/Cover (21, 23)
is turned out fully counter clockwise until stopped; the
Venturi Tube Switch (35)
is set negative (switch lever towards mouthpiece tube); the mouthpiece has been removed.
CAUTION:
To
avoid
cutting
the
Poppet
Seat
(30)
with
the
knife
edge
of
the
Orifice
(26),
always
depress
the
Front
Cover
(2)
while
adjusting
the
Orifice
(26);
failure
to
do
so
will
result
in
damaging
the
Poppet
Seat
(30),
requiring
its
replacement.
4.
Lever Height Adjustment:
If available, attach an Inline Adjustment Tool between the second stage and the
LP Swivel
Hose ( )
to adjust the
lever height
(Fig. 45)
. Pressurize the
regulator and listen to determine that no air flow is
present; if none present, engage the slotted head of the
Orifice (26)
with the Inline Adjustment Tool and turn the
Orifice (26)
counterclockwise in small increments while depressing the
Front Cover (2)
until a slight leak is present.
Now
turn
the
Inline
Adjustment
Tool
clockwise
until
the
leak
just
stops,
then
turn
in
an
additional
1/12
turn
more.
Make
sure
to
depress
the
Front Cover (2)
while turning the
Orifice (26)
to prevent damaging the
Poppet Seat (30)
. If
a
leak
was
present
upon
initial
pressurization,
turn
the
Inline
Adjustment
Tool
clockwise
in
small
increments
until
the
leak
just
stops,
then
turn
in
an
additional
1/12
turn
more.
5.
If no Inline Adjustment Tool is available, fully depressurize the regulator and remove the
LP Swivel Hose (39)
from the
second stage. Use a narrow flat blade screwdriver and adjust the
Orifice (26)
as outlined is step 4 above.
NOTE:
Turning
the
Orifice
(26)
clockwise
in
further
than
necessary
to
stop
air
flow
will
result
in
excessive
Demand
Lever
(28)
slack
and
excessive
spring
tension,
preventing
peak
performance.
6.
After attaining correct lever height, install the
LP Swivel Hose (39)
by attaching an adjustable crows foot wrench to a
calibrated torque wrench and turning clockwise; torque to
50‐60 in/lbs
(Fig. 46)
.
