8
LT-1928
M A I N T E N A N C E
PERIODIC HOMECARE PROVIDER
PREVENTATIVE MAINTENANCE
Every DeVilbiss Oxygen Concentrator is tested at the factory.
To assure continued trouble-free performance, the following
preventative maintenance should be performed by the home-
care provider during periodic oxygen patient visits. Failure to
properly maintain the unit will void the warranty.
1. Check the oxygen concentration with an oxygen analyzer
(part #O2ANA)—every 3 months on non-OSD units or every
two years on OSD units.
a. Calibrate the oxygen analyzer prior to checking the oxy-
gen concentration.The analyzer should be properly cali-
brated using the manufacturer’s recommended procedure.
NOTE
: Changes in temperature, altitude, or humidity may
affect the analyzer’s oxygen concentration reading.The analyz-
er should be calibrated in similar conditions to the location of
the concentrator.
b. The concentrator must operate for a minimum of 20 min-
utes before checking the oxygen concentration.
c. Connect the analyzer to the unit’s oxygen outlet port
(Figure 1) and wait until the display stabilizes.
d. Record the reading.
2. Check the audible alarm and indicator lights every two years.
When the power switch is turned “On,” listen for the audible
alarm and check to see if the front panel indicator lights are
operating.
3. Change intake filter as follows:
a. Extended life intake bacteria filter (part # 515DZ-605) -
Inspect once a year. Change as necessary, not to exceed
8760 hours.
b. Open the filter door and replace filter as required.
4. Change the final bacteria filter (part #PV5LD-651) every
two years or 17,520 hours.
a. Unplug the unit, remove the cabinet, and loosen the bib.
b. Remove the hose from each end of the filter (Figure 8) and
discard the filter.
c. Install the new final bacteria filter with the “IN” fitting
toward the flow meter.
d. Tighten the bib and replace the cabinet.
5. Check the system performance every two years of operation
by measuring the accumulator pressure swing. Use the
Accumulator Pressure Test
described in the chapter
Component
Testing, Repair and Replacement.
NOTE:
This PM Schedule reflects:
•
5000 hour usage equal to one year
•
a normal, clean operating environment.
The homecare provider is responsible for:
•
determining the condition of the concentrator operating
environment.
•
determining a preventative maintenance interval frequency
(not to exceed the schedule stated above which takes into
consideration the specific operating environment).
BETWEEN PATIENT MAINTENANCE
1. Discard oxygen tubing, cannula & humidifier bottle.
2. Wash or replace the cabinet air filter.
3. Wash the concentrator cabinet.
4. Check oxygen concentration. If the unit falls within specifica-
tion, the extended life intake bacteria filter does not need to
be replaced between patients.
PREVENTATIVE MAINTENANCE SUMMARY
Patient
Daily
Clean the humidifier bottle (if used).
Weekly Clean air filter on back of unit.
Clean exterior of cabinet.
Other
Clean and replace cannula/mask and tubing as
instructed by manufacturer.
Homecare Provider
Change intake bacteria filter as necessary following
requirements in step 3.
3 months Check oxygen concentration on non-OSD units.
Check the concentrator environment, and set a
maintenance interval of less than 3 months if
required.
2 years
Check audible alarm and indicator lights.
Change final bacteria filter (change within 17,520
hours).
Check system performance.
Check oxygen concentration on OSD units.
Summary of Contents for DeVilbiss 515ADS
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