Instruction/ maintenance manual of the product OM-25A Hoya
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OXYGEN ANAL YZER MODEL OM-25A USER’S GUIDE AND OPERA TING INSTRUCTIONS R213M15 Rev . K ® manufactured by: R213M15K.qxd 6/26/2006 8:59 AM Page 1.
Manufacturer: Maxtec, Inc European Representative Airox S.A. Parcd’activities Pau-Pyrenees L ’echangeur BP833 64008 P AU Cedex France R213M15K.qxd 6/26/2006 8:59 AM Page 2.
i PREF ACE This manual describes the function, operation and maintenance of the Maxtec Model OM-25A hand-held oxygen analyzer . A member of Maxtec's MAXO 2 analyzer line of oxygen analyzers and monitors, the OM-25A utilizes the MAX-250 oxygen sensor and is engineered for fast response, maximum reliability and stable performance.
ii T o avoid explosion, do not operate the oxygen analyzer in the presence of flammable anesthetics or in an atmosphere of explosive gases. Operating the oxygen analyzer in flammable or explosive atmospheres may result in fire or explosion.
iii Classification: Protection against electric shock: Internally powered equipment. Protection against water: Ordinary equipment Mode of Operation: Continuous S terilization: See section 6 Safety of application in the presensence of a flammable anesthetic mixture: See section 8.
iv T ABLE OF CONTENTS 1. SYSTEM OVERVIEW ............................................. 1 1.1 Base Unit Description ................................ 1 1.2 Component s Description ......................... 2 1.3 MAX-250 Oxygen Sensor ...................
1 1. SYSTEM OVERVIEW 1.1 Base Unit Description The MAXO 2 analyzer (Model OM-25A) provides unparalleled performance and reliability , due to an advanced design that includes the following features and operational benefits.
2 CD Readout 3 1 / 2 -Digit Display- The 3 1 / 2 -digit liquid crystal display (LCD) provides direct readout of oxygen concentrations in the range of 0-100%. It also displays "CAL" when the calibration mode is entered. "%" Sign- The "%" sign is present during normal operation when the keypad settings are locked.
3 LCD Readout Keyp ad Sample Inlet Connection A B C 1 2 3 4 5 7 6 OM-25A R213M15K.qxd 6/26/2006 8:59 AM Page 5.
4 changed using the ↑ and ↓ arrow keys. During calibration, the "%" sign will flash at a once per second rate. When the calibration value is set, pressing the CALIBRA TE or LOCK/UNLOCK key will cause the unit to exit the calibration mode and return to normal operation.
5 2. SET -UP PROCEDURE 2.1 Battery Inst allation All MAXO 2 analyzer units are powered by two, AA alkaline batteries (2 x 1.5 V olts) and are shipped without the batteries installed. The battery compartment is accessible from the back side of the unit.
6 It is best to calibrate the MAXO 2 analyzer to a known documented oxygen concentration at a pressure and flow similar to your clinical application.
7 8) When the calibration value is set, press the CALIBRA TE or LOCK/UNLOCK key again to accept the calibration setting and return to normal operation.
8 4) Release both the CALIBRA TE key and the ↓ key . The unit will automatically enter the “LOCKED” condition and return to normal operation. 2.2.4 Factors Influencing Calibration The primary factors influencing the MAXO 2 analyzer are temperature, pressure, and humidity .
9 Humidity Effect Humidity has no effect on the performance of the MAXO 2 analyzer other than diluting the gas, as long as there is no condensation. Depending on the humidity , the gas may be diluted by as much as 4%, which proportionally reduces the oxygen concentration from the dry concentration.
10 3) Remove the expired sensor from the sensor compartment and carefully pull apart the small white connector that connect s the black and red sensor wires to the analog input wiring. NOTE: The sensor cont ains lead and lead acetate, be sure to dispose of expired sensors in accordance with hospit al, local, state and federal regulations.
11 5. PROBLEM SOL VING • If the "LOW BA T" icon is displayed on the LCD readout at any time, the batteries should be replaced as soon as possible. • When the unit is in the power on mode and the LCD displays "000%," the sensor is not connected properly .
12 7. SPECIFICA TIONS 7.1 Base Unit Specifications Measurement Range: 0.0-100% Resolution: 0.1% Accuracy and Linearity: ±1% of full scale at constant temperature, R.H. and pressure when calibrated at full scale. T otal Accuracy: ±3% Actual Oxygen Level over full operating temperature range.
13 8. APPLICA TIONS 8.1 Exposure to Anesthetic Gases Because of the unique chemistry of the oxygen sensors provided with the MAXO 2 analyzer , there are no significant effects when exposed to commonly used anesthetic gases, however , the analyzer is not designed for exposure to flammable gas mixtures.
14 8.3 Calibration Errors The MAXO 2 analyzers have a self test feature built into the software to detect faulty calibrations. During calibration, if the signal from the oxygen sensor is outside the limit s stored within the instrument’s memory , a flashing “CAL Er” is displayed.
15 9. SP ARE P ARTS AND ACCESSORIES Part Number Item R125P01-002 MAX-250 Internal Sensor R212P91 Battery Cover R212P17 Keypad R212P10 LCD Display R212P30-002 PCBA Board Accessories R213P02 Monitor/Ana.
16 10. W ARRANTY The MAXO 2 Analyzer is designed for medical oxygen delivery equipment and systems. Under normal operating conditions, Maxtec warrants the MAXO 2 Analyzer to be free from defec.
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Maxtec, Inc. 6526 South Cottonwood S treet Salt Lake City , UT 84107 General T el: 801-266-5300 T oll Free Dial: 800-748-5355 F AX: 801-270-5590 Home Page: http://www .
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However, one of the most important roles played by the user manual is to help in solving problems with Hoya OM-25A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoya OM-25A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
