Covidien Puritan Bennett 540, User Manual, Page: 23 / 141

Symbols and Markings
Puritan Bennett 540™ Ventilator User’s Manual
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Index of Protection rating for the ventilator’s enclosure, defined in IEC 60529 (BSEN60529:1991).
The first digit, 3, indicates protection against the intrusion of small foreign bodies (including fingers, tools,
wires, etc. with a diameter greater than 2.5 mm) into the ventilator. The second digit, 1, indicates
protection against water dripping or falling vertically, as well as an environment featuring water vapor
condensation and/or light rain.
This rating appears on the ventilator’s back panel; see Table 1-2 , item 6.
CSA – Canadian Standards Association.
This symbol appears on the ventilator’s back panel; see Table 1-2 , item 6.
This symbol appears on the ventilator’s front panel UP/UNFREEZE key; see Figure 2-3 on page 2-5, item 6.
This key is used to: move the LCD display’s cursor upwards, line-by-line; increase the value of displayed
and selected parameter settings; restart (“unfreeze”) waveforms tracing.
This symbol appears on the ventilator’s front panel DOWN/FREEZE key; see Figure 2-3 on page 2-5, item 5.
This key is used to: move the LCD display’s cursor downwards, line-by-line; decrease the value of
displayed and selected parameter settings; stop (“freeze”) waveforms tracing.
This symbol appears on the ventilator’s front panel ENTER key; see Figure 2-3 on page 2-5, item 4.
This key is used to confirm command actions.
This symbol appears on the ventilator’s front panel ALARM CONTROL key; see Figure 2-3 on page 2-5,
item 3. (See my notes, to the left and below, in red).
This key is used to: cancel the audible portion of alarms for 60 seconds at a time; cancel an alarm.
For more information, refer to section
3, “Alarms and Troubleshooting.”
This symbol appears on the ventilator’s front panel MENU key; see Figure 2-3 on page 2-5, item 7.
This key is used to access the ventilator’s menus via the ventilator’s front panel LCD display.
This symbol (IEC 60417– 5009). appears on the ventilator’s front panel VENTILATION ON/OFF button; see
Figure 2-3 on page 2-5, item 8.
This key is used to Start and Stop ventilation.
Air outlet towards patient.
This symbol appears on the front right of the ventilator, adjacent to the TO PATIENT port;
see
Figure 1-3 , item 2, and Figure 4-9 on page 4-9.
Air return from patient (double-limb option).
This symbol appears on the front-left of the ventilator, adjacent to the From Patient
port
;
see Figure 1-2 , item 5.
Patient proximal pressure port.
This symbol appears on the front right of the ventilator, adjacent to the From Patient port;
see
Figure 1-1 , item 4, and Figure 4-9 on page 4-9.
Exhalation valve pilot port.
This symbol appears on the front right of the ventilator, adjacent to the TO PATIENT port indicating the
connection of the tubing between the patient circuit exhalation valve;
see
Figure 1-1 , item 4, and Figure 4-9 on page 4-9.
Oxygen inlet.
This marking appears on the back panel of the ventilator, adjacent to the oxygen inlet port;
see
Figure 1-4 , item 3, and Figure 4-14 on page 4-14.
Table 1-1. Ventilator Symbols (Continued)
Symbols Descriptions
IP31