1.1.2 GENERAL WARNINGS
WARNINGS
1. Failure to properly select the appropriate respirator for all the
contaminants and their concentrations against which protec-
tion is required, or a failure to follow North’s instructions and
warnings, may result in exposure to the hazardous materials,
causing serious illness, disability or death of the affected
worker.
2. Do
not
use this respirator for protection against air contami-
nants other than those listed on the instructions which accom-
pany each filter. If in any doubt, contact your local distributor.
3. Do
not
use this respirator under any of the following conditions:
• While performing or observing abrasive blasting (sand-
blasting) operations.
• For fire fighting.
• For protection from fumigants.
• In oxygen-deficient atmospheres (any atmosphere having
less than 17% oxygen by volume at sea level).
• In atmospheres where the concentrations of toxic contami-
nants are unknown, or are IDLH. (An IDLH atmosphere is an
atmosphere which has a concentration of any toxic, corro-
sive or asphyxiant substance that poses an immediate threat
to life, which would cause irreversible debilitating effects on
health, or which would interfere with the ability to escape
from a dangerous atmosphere.)
• In atmospheres where the concentration of the contami-
nant exceeds the respirator’s Maximum Use Concentration
listed in the table below;
TYPE OF FILTER
MAXIMUN USE CONCENTRATION
Gas or Vapour
10 X OEL or 1000 ppm Maximum
P1
4 X OEL
P2
10 X OEL
P3
20 X OEL
or;
4
GB
