MSA altair 4 - Safety and Precautionary Measures to be Adopted

INSTRUMENT SAFETY MSA
6
ALTAIR 4 - Operating Manual
interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own
expense.
WARNING
This is a class A product in accordance with CISPR 22. In a
domestic environment, this product may cause radio
interference, in which case the user may be required to take
adequate measures.
This Class A digital apparatus complies with Canadian ICES-003.
1.2 Safety and Precautionary Measures to be Adopted
WARNING
Carefully review the safety limitations and precautions in this section
before placing this instrument in service. Incorrect use can cause
serious personal injury or death.
Check function (see section 3.6) each day before use. MSA recommends
carrying out a routine inspection prior to each day's use.
Perform a Bump Test (see section 3.8) before each day's use to verify
proper instrument operation. The instrument must pass the bump test. If it
fails the test, perform a calibration (see section 3.9) before using the
instrument.
Perform a bump test more frequently if the unit is subjected to physical
shock or high levels of contaminants. Also, perform a bump test more
frequently if the tested atmosphere contains the following materials, which
may desensitize the combustible gas sensor and reduce its readings:
• Organic silicones
• Silicates
• Lead-containing compounds
• Hydrogen sulfide exposures over 200 ppm or exposures over
50 ppm for one minute.