Routine Maintenance
7-2 User Manual
DMR V4C 3.3 (User Manual) V-4 06-May-2022
1. Replacement of the Oxygen Mixer's air intake filter.
• Once per month or when visibly soiled, whichever comes first.
• If the V4C-O2E Oxygen Mixer is used outdoors or in a dusty environment, the Oxygen Mixer's air
intake filter should be checked weekly and replaced as necessary.
Caution:
Always check the expiration date on the filter's package before use to ensure it has not passed
its "use-by" date.
To replace the filter:
a. Using two fingers, pinch and grip the air intake filter located on rear of V4C-O2E Oxygen Mixer
(Figure 7-1).
Figure7-1.V4C-O2E air intake filter location
b. Remove the old air intake filter and discard.
c. Replace by pressing the new air intake filter into the empty cavity.
d. Ensure that the filter is flush with the surface of the enclosure.
2. Clean the ventilator per Chapter 6. Clean all external panels and surfaces before and after each patient
use and as often as necessary to keep the V4C-O2E Oxygen Mixer clean. You should clean the ventilator
and Oxygen Mixer periodically, whenever it is soiled or dirty, before any maintenance operation,
and
before storing the device.
3. Send the V4C-O2E Oxygen Mixer for preventative maintenance every 2 years for servicing. The first
maintenance must be completed after 2 years of use, or 3 years from the date of manufacture, which-
ever comes first. Subsequent maintenance must be performed every 2 years from the date of the last
service. Please contact your Baylis Medical Technologies representative to arrange service of the device.
The V4C-O2E Oxygen Mixer should have an expected service life of 10 years, provided that the
preventative maintenance schedule in this manual is followed.
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