Models BB30-COAA, BB50-COAA & BB100-COAA Manual No. AABOX011 (Rev 2 June 2005) Operating Manual AIR SYSTEMS INTERNATIONAL, INC. 829 Juniper Crescent, Chesapeake, Va. , 23320 Telephone (757) 424-3967 Toll Free 1-800-866-8100 Fax No. (757) 424-5348 http://www.airsystems.cc e-mail: sales@airsystems.cc Printed in U.S.A ©Copyright Air Systems International, Inc. 2005. All Rights Reserved.
-2- BREATHING AIR QUALITY POSITION STATEMENT The responsibility for the quality of breathing air rests with the user. Compliance with federal, state, or local regulations are the responsibility of the user and this recommendation does not supersede any existing rules, regulations, or laws which may apply. Breathing air filtration products meet or exceed CGA Grade-D specifications for air quality as adopted by Federal OSHA. Compressor air quality standards meet or exceed OSHA 1910.134 requirements.
-3- AUTO-AIR BREATHER-BOXTM OVERVIEW These Grade-D filtration units have been designed for work in hazardous locations where the worker needs additional egress air to escape harmful environments. IDLH atmospheres require that the worker wear a pressure demand airline respirator with a minimum of five minutes of escape air, however, this five minutes of escape air may not be sufficient time to safely egress from the area. The Auto-Air Breather BoxTM is attached to a secondary supply source of air.
-4- SPECIFICATIONS AND PARTS IDENTIFICATION MODEL # SIZE: # OF OUTLETS: WEIGHT: MAXIMUM AIR FLOW (CFM): MAXIMUM INLET PRESSURE: MAXIMUM OUTLET PRESSURE: RELIEF VALVE: BB30-COAA BB50-COAA 24"L x 16"H x 7"D 26.5"Lx21"Hx9"D (61cm x 41cm x 18cm) (37cmx53cmx23cm) 3 4 25 lbs (55kg) 38.8 lbs (17.6kg) 30scfm @ 110psi 50scfm @ 110psi 849 LPM @ 7.5 bar) (1415 LPM @ 7.5 bar) MONITORING: 150psi (10.3 bar) 150psi (10.3 bar) 150psi (10.3 bar) 125psi (8.6 bar) 125psi (8.
-5- MODEL BB100-COAA ITEM # 1 2 3 4 5 6 7 8 9 10 11 12 13 13A 14 14A 15 16 17 18 19 20 21 22 23 24 25 26 27 28 DESCRIPTION RED LENS 12 VDC BULB GREEN LENS 120 VAC BULB AUDIBLE ALARM - BACK-UP AIR REMOTE ALARM JACK REMOTE ALARM JACK COVER AUDIBLE ALARM - HIGH CO CLEAR LENS GREEN LED RED LED PRESSURE GAUGE, 0-160 PSI QUICK DISCONNECT, HANSEN SERIES QUICK DISCONNECT, SCHRADER SERIES DUST CAP, HANSEN SERIES DUST CAP, SCHRADER SERIES PRESSURE SWITCH RELIEF VALVE, 125 PSI FLOWMETER PRESSURE REGULATOR "D" FILTER
-6- REMOTE SIGNAL CABLE CONNECTIONS FOR CO-91AA MONITOR IDENTIFICATION ITEM # 1 2 3 4 5 6 7 8 9 10 11 DESCRIPTION LOW BATTERY INDICATOR CALIBRATION TOOL BATTERY HOLDER REMOTE SIGNAL CONNECTOR RECESS PLUG WITH FUSE HOLDER AUXILIARY DC POWER JACK ON/OFF/TEST SWITCH AIR SAMPLE INLET AIR DISCHARGE PORT (DO NOT BLOCK) AUTO-AIR ALARM ON/OFF SWITCH AUTO-AIR CABLE CONNECTION
-7- AUTO-AIR BREATHER BOXTM SETUP AND OPERATION STEP 1) Secure a primary air source of sufficient air flow and discharge pressure. The number and type of respirators being used determines the flow rate and pressure required. STEP 2) Secure a reserve (backup) air supply of sufficient capacity to achieve the desired time for all workers to egress from the hazardous area.
-8- STEP 5) Close the flowmeter by turning the control knob fully clockwise. STEP 6) Hold the “ON/OFF/TEST” switch to the “TEST POSITION”. All local and remote audible/visual indicators will activate. If indicators do not activate, check all electrical connections, then call factory repair department. Note: An alarm function test can be performed at any time by lifting the “ON/OFF/TEST” switch to the “TEST” position.
-9- STEP 10) Turn “BACK-UP AIR ALARM” switch to the “ON” position. The red backup light and audible alarm (constant tone) should be on at this time. Note: The “BACK-UP AIR ALARM” switch provides an audible alarm and visual indicator. In the event of a power failure/interruption or a loss of primary air pressure, the alarms will sound and the red back-up indicator will illuminate. STEP 11) Connect primary air to unit at the inlet quick connect plug (1/2” Industrial Interchange).
SHUTDOWN 1. 2. 3. 4. 5. 6. 7. -10- Make sure all personnel have egressed from the work area. Close reserve air cylinders. Despressurize both the main and reserve air supply lines. Bleed system pressure by pulling the ring out on the relief valve, or relieve pressure through the manual drain located at the base of the filter. Turn monitor “OFF” at the “ON/OFF/TEST” switch. Turn “OFF” the “BACK-UP AIR ALARM” switch. Do not remove 9-volt batteries.
-11- Calibration: Monitor calibration should be done monthly to ensure accuracy. A calibration date sticker should be affixed for future reference. To obtain an accurate calibration, we recommend the use of Air Systems’ calibration kits. Part Number: BBK-20 Calibration Kit for CO monitor; 20ppm CO gas, zero air, regulator and case 17 liter size. BBK-10 Calibration kit for Canadian CO monitor settings; includes 10ppm CO gas, zero air, regulator and case-17 liter size.
-12- SENSOR REPLACEMENT Replacement sensors are shipped with a metal spring installed between the electrodes. Do not remove the clip until the sensor is to be installed into the monitor. STEP 1) STEP 2) Disconnect all external connections. Remove the four screws from the monitor’s Remove CO monitor from the unit. left end plate. Note: Alarm location may vary. STEP 4) Remove sensor from sensor cup and remove leads . Take the new sensor and remove the metal spring.
-13- CALIBRATION PROCEDURE Do not use inert gases to zero the monitor. This will cause premature failure of the sensor. CO Zero Adjustment To zero the instrument, follow the steps below. Zero calibration gas should be used to properly “zero” the instrument and assure that a valid calibration is achieved. If zero adjustment cannot be made as indicated, sensor replacement may be necessary. After each monitor adjustment outlined in the following steps, allow time for the changes to stabilize. 1.
-14- CO SPAN ADJUSTMENT Use only 10 - 20 ppm CO gas for calibration. Using a higher concentration may decrease accuracy at lower scale readings. Note: 10ppm gas must be used to satisfy Canadian calibration requirements. 1. Install regulator to the CO calibration gas cylinder. 5. Adjust the "span" pot adjustment screw (clockwise to increase, counterclockwise to decrease) until the digital display reads the same concentration (ppm) as printed on the calibration gas cylinder. 2.
-15- Warranty Disclaimer Air Systems’ manufactured equipment is warranted to the original user against defects in workmanship or materials under normal use for one year after date of purchase. Any part which is determined by Air Systems to be defective in material or workmanship will be, as the exclusive remedy, repaired or replaced at Air Systems’ option. This warranty does not apply to electrical systems or electronic components.
