3 definitions of symbols, Symbol, Description – AirSep MN171-1 User Manual
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MN171-1 Rev. A 02/14
1.3 Definitions of Symbols
Symbols are frequently used on equipment and/or the manual in preference to words with the intention of 
decreasing the possibility of misunderstanding caused by language differences. Symbols can also permit easier 
comprehension of a concept within a restricted space. 
The following table is a list of symbols and definitions used with the Focus Portable Oxygen Concentrator.
Symbol
Description
Symbol
Description
ON (power switch on)
 
OFF (power switch off) 
 
 
 
Warning –
Describes a hazard or unsafe
practice that if not avoided can result in 
severe bodily injury, death or property 
damage 
Class II Equipment, double insulated
 
 
Caution –
Describes a hazard or unsafe
practice that if not avoided can result in 
minor bodily injury or property damage 
Complies with the 93/42/EEC directive 
drawn up by the approved organization 
No. 0459 
 
 
 
Note – Provides information important 
enough to emphasize or repeat 
 
 
 
 
Safety agency for CAN/CSA C22.2 No. 
601.1 M90 for medical electrical 
equipment 
Consult the accompanying 
documents
Keep unit and accessories dry
Use no oil or grease
Proper disposal of waste of electrical and 
electronic equipment required 
 
 
No smoking 
 
Do not disassemble 
Type BF equipment
Consult instructions for use
 
 
 
 
Oxygen outlet connection to the 
cannula 
 
 
 
Do not expose to open flames 
Caution: Federal law (USA) restricts 
this for sale or rental by or on the order 
of a physician or licensed health care 
provider. 
 
 
Do not block fan