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SECTION 4
MAINTENANCE PROCEDURES
Intake Bacteria Filter - The intake bacteria
filter (5 Fig. 6) should be inspected at the
same time the felt pre-filter is inspected
and
changed
when
needed
(approxi-
mately every six months).
To replace the intake bacteria filter:
A.
Pull
the
bacteria
filter
out
of the
rubber grommet (See Fig. 6).
B.
Remove the felt pre-filter assembly.
Place the feit pre-filter assembly on a
new bacteria filter.
D.
The complete filter assembly can then
be inserted into the rubber grommet.
Audible Alarm - Testing the audible alarm
system should be included
in a routine
maintenance
program.
!t should
be
checked on a monthly basis.
A.
To test the audible
alarm
system,
remove
the
line cord
from
the
220
volt AC
outlet
and
turn
the
power
switch to the
"ON"
position.
if the
alarm
is not heard
or sounds
weak,
replace the 9 volt battery (20 Fig. 11)
located
on the front
of the
vertical
divider.
B.
Plug the unit into a 220 volt AC outlet
and
turn
the
power
switch
to the
"ON"
position. The alarm will sound
momentarily. If the alarm is not heard
or sounds weak
replace the 9 voit
battery.
NOTE:
Replacement
batteries
can
be
purchased locally and should be alkaline
batteries or equivalent.
02 Concentrations - Oxygen
concentra-
tions should
be checked
monthly
in
accordance
with
the established
test
procedures (Section 4, A).
NOTE:
Before checking
concentrations,
the oxygen analyzer should be properly
calibrated using a 100%
pure oxygen
source.
It should
also
be noted
that
changes in temperature, altitude, or hu-
midity may affect the oxygen
concen-
tration reading as shown by the analyzer.
Therefore,
the
analyzer
should
be
calibrated in similar conditions to where
the concentrator is located.
С.
Periodic Maintenance
10/87
Final Bacteria Filter - The final bacteria
filter (3 Fig.
12) should
be changed
as
needed (approximately once a year under
normal conditions).
To replace the final bacteria filter:
A.
Loosen the cabinet fasteners
on the
top and sides of the unit.
Swing the front cover to the right.
C.
Remove
hose clamp and
hose from
each end of filter and discard filter.
D.
Install new
bacteria filter and
secure
with hose clamps.
E.
Replace cover and secure with cabinet
fasteners.
Compressor
Filter - The compressor
HEPA
filter (12 Fig. 14) should be changed at or
before 25,000 hours of unit operation.
To replace compressor filter:
A.
Refer to Service Instruction B to open
cabinet covers. The back cover should
be completely removed.
B.
Cut plastic cable tie that holds HEPA
filter in place.
C.
Loosen hose clamps and remove black
rubber hose from both ends of filter.
D.
Install new HEPA filter with air flow
directional arrow pointing downward
and secure with plastic cable tie.
NOTE:
Holes
for cable
tie are
located
directly behind
left sieve bed. Thumb
screws and
brackets that secure
beds to
unit must
be removed
so that cable tie
can be inserted into holes.
E.
Attach black rubber hoses to each end
of filter and secure with hose clamps.
F.
Replace cabinet covers and
secure
with cabinet fasteners.
Compressor
- Inspect
and
change
if
necessary the internal
components
at
10,000 hour intervals of unit operation.
See Service Instruction |.
NOTE:
All
routine
and
periodic
maintenance
should
be
recorded
by
listing the date and hour readings in a
maintenance
schedule
like
the
one
shown on the following page.
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