SECTION 11—REGULATOR
Perfecto
2
™
V
48
Part No 1164934
SECTION 11—REGULATOR
Replacing Regulator
DANGER
To
prevent
electrical
shock,
ALWAYS
disconnect
concentrator
from
electrical
outlet
before
servicing.
NOTE:
For
this
procedure,
refer
to
FIGURE 11.1
on
page 49.
1. Unplug
unit.
2. Remove
cabinet.
Refer
to
Removing
Cabinet
on
page 23.
3. Remove
the
1/8
‐
inch
tubing
to
oxygen
sensor
housing.
4. Remove
the
four
mounting
screws
that
secure
regulator
to
product
tank
cap.
5. Remove
regulator
from
product
tank
lid
ensuring
that
the
O
‐
rings
are
removed.
NOTE:
Clean
mounting
surface
of
product
tank
cap.
Ensure
that
the
two
ʺ
O
ʺ
rings
for
the
NEW
regulator
are
installed
onto
the
ports
(underside)
of
the
NEW
regulator
before
installation.
WARNING
Ensure
proper
installation
of
regulator.
Note
flow
arrow
on
regulator.
This
MUST
face
toward
the
regulator
outlet
tubing
or
flow
will
be
interrupted
causing
system
shutdown.
6. Install
new
regulator
onto
product
tank
by
reversing
STEPS
3
and
4.
7. Torque
mounting
screws
to
5
±
1
inch
‐
lbs.
8. Reinstall
1/8
‐
inch
tubing
to
oxygen
sensor
housing.
9. Adjust
regulator
pressure
if
necessary.
Refer
to
Adjusting
Regulator
on
page 49.
10. Run
unit
and
check
for
leaks.
Refer
to
Leak
Test
on
page 76.
11. Reinstall
cabinet.
Refer
to
Removing
Cabinet
on
page 23.
