14
15. Push in and rotate cylinder valve knob clockwise to close. When
cylinder valve is fully closed, open purge valve slightly to vent re-
sidual air pressure from system. As the residual air pressure vents
from the system, the remote pressure gauge needle will swing
from “FULL” and move towards “EMPTY.” Observe the lights of
the HEADS-UP DISPLAY and verify that they light properly in de-
scending order. Close the purge valve when the gauge needle
crosses the “¼” mark but before the beginning of the red “EMPTY”
band (see FIGURE 4).
The VIBRALERT end of service indicator alarm shall actuate. The
red light on the far left of the HEADS-UP DISPLAY shall flash rap-
idly at ten (10) times per second. After verifying that all alarms
are functioning (rapid clicking of the VIBRALERT Alarm and rapid
flashing of the HEADS-UP DISPLAY red light) open the purge
valve slightly to vent the remaining residual air pressure from the
system. All alarms shall cease operation when the system pres-
sure drops to zero. When air flow stops completely, return purge
valve to the fully closed position (pointer on knob upward).
FIGURE 3
REMOTE GAUGE
TO TEST ALARMS,
CONTROL NEEDLE
BETWEEN 1/4 AND
TOP OF "EMPTY"
WARNING
IF ANY END OF SERVICE INDICATOR
ALARM DOES NOT ACTUATE AS DE-
SCRIBED IN THIS INSTRUCTION, DO NOT
USE THE RESPIRATOR. REMOVE THE RES-
PIRATOR FROM SERVICE AND TAG IT FOR
REPAIR BY AUTHORIZED PERSONNEL.
USE OF AN IMPROPERLY OPERATING END
OF SERVICE INDICATOR MAY RESULT IN
SERIOUS INJURY OR DEATH.
WARNING
AIR LEAKAGE MAY REDUCE THE DURA-
TION OF USE AND/OR THE TIME
REMAINING AFTER AN END OF SERVICE
ALARM ACTUATES OR MAY PREVENT AN
END OF SERVICE ALARM FROM ACTUAT-
ING. THE USE OF A RESPIRATOR
EXHIBITING AN AIR LEAK MAY RESULT IN
SUDDEN TERMINATION OF THE AIR SUP-
PLY WHICH COULD RESULT IN SERIOUS
INJURY OR DEATH.
REGULAR OPERATIONAL INSPECTION CONTINUED...
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