Symbols and Labels
User Manual 1-11
DMR V4C 3.3 (User Manual) V-4 06-May-2022
WARNING:
Always ensure that any filters are removed from the back of the ventilator before connecting the
gas connection tube of the Oxygen Mixer. Using the V4C-O2E Oxygen Mixer with the ventilator's
air intake filter in place at the back of the ventilator could impact flow resistance of the system.
1.3 Symbols and Labels
Various labels or specific markings are affixed to the V4C-O2E Oxygen Mixer that describe precau-
tions to be taken for the correct use and to contribute to the traceability of the Product. See
Table 1-1 for illustrations of these labels and markings and Table 1-2 for their locations on the V4C-
O2E Oxygen Mixer. Use the item numbers in Table 1-2 to locate the labels in Figure 1-1, Figure 1-
2, and Figure 1-3.
Table1-1.V4C-O2E Oxygen Mixer symbols
Symbol
Description
Air intake; do not obstruct.
This label appears on the Oxygen Mixer’s air intake.
Air exhaust, do not obstruct.
It is essential to read, understand, and follow these instructions before using the V4C-O2E Oxygen Mixer
(ISO 7000-0434A).
This symbol appears on the V4C-O2E Oxygen Mixer's back panel.
It is mandatory to read, understand, and follow these instructions before using the V4C-O2E Oxygen Mixer.
This symbol appears on the Oxygen Mixer's back panel.
Manufacturer.
Date of manufacture.
Serial number.
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