MSA PremAire Cadet Escape

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PremAire

Cadet Escape

Open-Circuit, Pressure-Demand, Escape,

Self-Contained Breathing Apparatus or Combination,

Open-Circuit, Pressure-Demand, Escape, Self-Contained

Breathing Apparatus and Type C, Supplied-Air

Respirator

OPERATION AND INSTRUCTIONS

This respirator is certified by the National Institute of Occupational Safety and

Health (NIOSH).

The warranties made by MSA with respect to the product are voided if the product

is not installed, used and serviced in accordance with the instructions in this manu-

al. Please protect yourself and your employees by following the instructions. Please

read and observe the WARNINGS and CAUTIONS inside. For additional information

relative to use or repair call 1-800-MSA-2222 during regular working hours.

TAL 903 (L) Rev. 1 © MSA 2009 Prnt. Spec. 10000005389(A) Mat. 10063148

Doc. 10063148

This manual must be carefully read and followed by all persons who have or will

have the responsibility for using or servicing this respirator. This respirator will

perform as designed only if used and service according to the instructions; oth-

erwise it could fail to perform as designed and persons who rely on the respi-

rator could sustain serious personal injury or death.

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The PremAire Cadet Escape Respirator is a combination supplied-air respirator with a self-contained breathing apparatus (SCBA) for escape, designed for open-circuit, pressure-demand operation. It can also function as a Type C, supplied-air respirator. This device is certified by the National Institute for Occupational Safety and Health (NIOSH).

Function Description:

The respirator utilizes a mask-mounted pressure-demand regulator (MMR) that maintains a slight positive pressure within the facepiece. This positive pressure prevents contaminants from entering the facepiece, even with minor face-to-facepiece seal leakage. The regulator senses the user's breathing demands and adjusts air supply accordingly.

In normal use, the PremAire Cadet Escape Respirator connects to an external air supply, providing respiratory protection as long as the user remains connected to the air supply hose. The escape cylinder is specifically for emergency egress from potentially Immediately Dangerous to Life or Health (IDLH) atmospheres, should the primary air supply fail or be interrupted. It is not intended for entry into hazardous areas or for switching between air lines.

Important Technical Specifications:

Air Supply: Approved for use with respirable air meeting CGA G-7.1 Grade D or higher quality. The dew point must not exceed -65°F (24ppm v/v).
Pressure Range: Minimum air supply pressure of 70 psig and maximum of 90 psig.
Hose Lengths: Minimum length of 8 feet and a maximum length of 300 feet. Up to 12 sections of straight or uncoiled hose can be used, or a maximum of six 50-foot sections of coiled hose. Hose sections vary from 8 to 100 feet.
Hose Connections: Air-line connection to the apparatus must be made through approved Quick-Disconnects only. Hoses must only be interconnected with either threaded connectors (3/4-16 UNF) or specific locking quick-disconnect couplings (CEJN, SNAP-TITE - Aluminum, Brass, Stainless Steel). Non-locking quick disconnects are also available for Foster (Steel, Stainless Steel, Brass) and Hansen (Brass, Stainless Steel) types, some with check valves in the plug.
Temperature Limits: Approved for use at temperatures above -25°F. MSA air supply hoses have specific temperature limitations: Polyvinyl Chloride (32°F to 120°F), Neoprene (-25°F to 212°F), and Nylon (Coiled) (-20°F to 180°F).
Cylinder Service Time: Available in 5, 10, and 15-minute rated durations, made from aluminum or carbon fiber. Cylinder life varies with work rate and can be shorter with heavy workloads.
Cylinder Storage: Cylinders should be stored full or at a pressure above ambient but less than 100 psig. Partially charged cylinders reduce apparatus duration and may not be protected by the pressure relief device in case of fire.
Cylinder Inspection: Hydrostatic test date on the cylinder approval sticker must be checked. Aluminum and carbon fiber cylinders must be tested every five years. Composite cylinders must be retired after 15 years.

Usage Features:

Facepiece Options: Available with Ultra Elite® Facepiece or Advantage® 4000 Facepiece, both in three sizes, with either a rubber or net head harness. The Ultra Elite Facepiece includes a speaking diaphragm.
Regulator Connection: The second stage regulator attaches to the facepiece with either Push-To-Connect or Slide-To-Connect connectors.
Bypass Valve: A red knob on the regulator allows for manual airflow in case of regulator malfunction.
Donning: The carrier and harness assembly can be configured for right or left hip mounting. Facepiece donning involves inserting the chin, pulling the harness over the head, and tightening straps (lower straps first, then temple straps, then top strap if present) for a snug fit.
Fit Check: A negative pressure fit check is performed by covering the inlet connection and inhaling, holding breath for 10 seconds. The facepiece should collapse and remain collapsed. An exhalation valve test involves blocking the inlet and exhaling.
Emergency Operation: If the air supply is interrupted, the user must fully open the cylinder valve, disconnect the attachment hose from the air supply hose, and immediately return to fresh air.
Cold Weather Operation: A nosecup is required below 32°F to reduce lens fogging. The regulator should be stowed in the stand-by mount to prevent moisture entry. Buttons and bypass valve should be checked for ice before entering hazardous atmospheres.

Maintenance Features:

Cleaning and Disinfecting: The facepiece and nosecup should be thoroughly washed in a mild cleaning solution or MSA's Confidence Plus® Cleaning Solution, rinsed with warm water (110°F), and air-dried away from heat or direct sunlight. The pressure demand exhalation valve should be cleaned by pressing the stem and flushing with clean water.
Inspection: A thorough visual inspection is required upon receipt and before each use, and monthly. This includes checking the facepiece for deterioration, cracks, tears, holes, or tackiness; head harness straps for breaks, loss of elasticity, or wear; lens for cracks or scratches; and the exhalation valve for proper operation.
Cylinder and Valve Assembly Inspection: Inspect for damage, check the hydrostatic test date, verify the gauge needle and face are visible, and ensure relief holes are clear. The valve assembly seal ring and fill port must be present, properly seated, and free of damage or contamination.
Carrier and Harness Inspection: Inspect all components for cuts, tears, abrasion, or signs of heat/chemically-related damage.
Functional Checks: After each use and monthly, perform checks for negative pressure retention in the facepiece, second stage regulator operation (including bypass knob, airflow, and absence of unusual sounds), and attachment hose quick-disconnect plug integrity.
Record Keeping: After inspection, the date and initials of the designated person should be recorded on an inspection tag, and a more detailed record kept in an inspection and maintenance log.
Cylinder Recharging: Cylinders should be recharged as soon as possible after use with respirable air meeting CGA G-7.1 Grade D or higher quality. The cylinder valve knob should remain closed during refilling. The fill port check valve should be checked for leakage after refilling.