Emergency Operation - Scott AIR-PAK 75i 2.2 Operating & Maintenance Instructions

EMERGENCY OPERATION

The respirator is automatic in function. It requires only the opening of
the cylinder valve and the proper donning of the facepiece to begin use,
and the closing of the cylinder valve to end use. If there is a malfunc-
tion or a suspected malfunction, use one of the emergency procedures
listed below:
1. If the VIBRALERT end of service time indicator alarm actuates during
use, even if the air supply has not been depleted to approximately
25% of full rated capacity, LEAVE THE CONTAMINATED AREA AT
ONCE.
IF THE VIBRALERT ACTUATES BEFORE THE AIR SUPPLY IS DE-
PLETED TO APPROXIMATELY 25% OF FULL RATED CAPACITY, IT MAY
INDICATE A FAILURE OF THE PRIMARY REDUCER PATH IN THE PRES-
SURE REDUCER, A MALFUNCTIONING REMOTE AIR SUPPLY GAUGE,
OR A FAILURE OF THE END OF SERVICE INDICATOR ALARM. LEAVE
THE AREA REQUIRING RESPIRATORY PROTECTION IMMEDIATELY
WHEN THE ALARM IS ACTUATED.
2. If the air supply is partially or completely cut off during use, fully open
the red purge valve on the regulator by turning it counterclockwise
(pointer on knob downward) and check to be sure the cylinder valve
is fully opened (turned fully counterclockwise). LEAVE THE CONTAMI-
NATED AREA AT ONCE AFTER OPENING THE PURGE VALVE.
3. If the air supply begins to flow freely into the facepiece during use,
fully open the red purge valve knob on the regulator by turning it
counterclockwise (pointer on knob downward). Partially close the
cylinder valve by pushing in and rotating clockwise to regulate the
flow of air to satisfy the requirements of the user. Do not close the
cylinder valve completely. LEAVE THE CONTAMINATED AREA AT
ONCE AFTER PARTIALLY CLOSING CYLINDER VALVE.
4. If there is a blockage of air flow or sudden and complete loss of the
system air supply so that there is total loss of respiratory protection,
LEAVE THE CONTAMINATED AREA AT ONCE. USE ALL NECES-
SARY PRECAUTIONS AND FOLLOW EMERGENCY PROCEDURES
PRESCRIBED BY YOUR ESTABLISHED RESPIRATORY PROTEC-
TION PROGRAM.
If any of the above procedures are used, REMOVE THE RESPIRA-
TOR FROM SERVICE AND TAG FOR REPAIR BY AUTHORIZED
PERSONNEL.
P/N 595236-01 Rev. B 10/11
NOTE
Page 30 of 44
WARNING
T H E S E E M E R G E N C Y O P E R A T I O N P R O -
C E D U R E S A R E F O R E M E R G E N C Y U S E
ONLY AND ARE MEANT TO SUPPLEMENT,
NOT REPLACE, THE EMERGENCY PRO-
C E D U R E S P R E S C R I B E D B Y Y O U R R E -
SPIRATORY PROTECTION PROGRAM. IF
T H E I R U S E I S R E Q U I R E D , L E A V E T H E
HAZARDOUS A R E A A T O N C E .
THESE EMERGENCY PROCEDURES WILL
INCREASE THE RATE OF CONSUMPTION
OF THE AIR SU PP LY A ND M AY C A USE
THE END OF SERVICE INDICATOR ALARM
TO DIMINISH IN INTENSITY OR STOP COM-
PLETELY. FAILURE TO LEAVE THE HAZ-
ARDOUS AREA IMMEDIATELY MAY RESULT
IN SERIOUS INJURY OR DEATH.
WARNING
THE AIRFLOW THROUGH THE RESPIRA-
TOR WHEN THE PURGE VALVE IS IN USE
CAN EXCEED 200 LITERS PER MINUTE.
TO REDUCE AIR CONSUMPTION, THE AIR-
FLOW MAY BE REDUCED BY PARTIALLY
CLOSING THE PURGE VALVE. FAILURE TO
LEAVE THE HAZARDOUS AREA WHEN THE
PURGE VALVE IS IN USE MAY RESULT IN A
SUDDEN TERMINATION OF BREATHING AIR
WHICH COULD CAUSE SERIOUS INJURY
OR DEATH.
WARNING
EMERGENCY PROCEDURE #3 IS THE ONLY
TIME THE RESPIRATOR MAY BE OPERATED
WITH THE CYLINDER VALVE LESS THAN
FULLY OPENED.
U S E O F