Instruction/ maintenance manual of the product OM-25ME MaxTech
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OXYGEN MONIT OR MODEL OM-25ME (OM-25ME-L) USER’S GUIDE AND OPERA TING INSTRUCTIONS manufactured by: R213M05 Rev . H ® ® R213M05H.qxd 6/26/2006 9:04 AM Page 1.
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i Manufacturer: Maxtec, Inc European Representative Airox S.A. Parcd’activities Pau-Pyrenees L ’echangeur BP833 64008 P AU Cedex France R213M05H.qxd 6/26/2006 9:04 AM Page i.
ii PREF ACE This manual describes the function, operation and maintenance of the Maxtec Model OM-25ME and OM-25ME-L oxygen monitors. Notes are included where differences may occur between the two monitors.
iii T o avoid explosion, do not operate the Oxygen monitor in the presence of flammable anesthetics or in an atmosphere of explosive gases. Operating the oxygen monitor in flammable or explosive atmospheres may result in fire or explosion.
iv The OM-25ME-L™ oxygen monitor has been manufactured with a low alarm setting adjustable down to 15% This change is within the guidelines set forth in ASTM S pecification F1462-93. The OM-25ME-L™ is labeled to indicate this feature. Classification: Protection against electric shock: Internally powered equipment.
v T ABLE OF CONTENTS 1. SYSTEM OVERVIEW ........................................... 1 1.1 Base Unit Description .............................. 1 1.2 Component s Description ........................ 2 1.3 MAX-250E Oxygen Sensor ........................
1. SYSTEM OVERVIEW 1.1 Base Unit Description The MAXO 2 (Model OM-25ME) provides unparalleled performance and reliability , due to an advanced design that includes the following features and operational benefits.
2 1.2 Component s Description (please refer to p age 3) LCD 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.
LCD Readout Alarm LEDs Keyp ad External Probe A C B D 1 2 3 10 12 4 13 15 16 14 6 17 18 8 OM-25ME 11 9 5 7 3 R213M05H.qxd 6/26/2006 9:04 AM Page 2.
4 Alarm LEDs Low Alarm LED- In a low alarm condition, the red "LOW ALARM" LED will flash each second, accompanied by the alarm beeper . High Alarm LED- In a high alarm condition, the red "HIGH ALARM" LED will flash each second, accompanied by the alarm beeper .
D 13 14 15 16 17 18 ↑ ↑ and ↓ ↓ Keys- The ↑ and ↓ arrow keys are used in conjunction with the CALIBRA TE key to calibrate the unit or in conjunction with the LOW SET and HIGH SET keys to adjust the alarm settings.
6 CAUTION: The Maxtec MAX-250E oxygen sensor is a sealed device cont aining a mild acid electrolyte, lead (Pb), and lead acet ate. Lead and lead acetate are hazardous waste constituent s and should be disposed of properly , or returned to Maxtec for proper disposal or recovery .
2. SET -UP PROCEDURE 2.1 Battery Inst allation All MAXO 2 units are powered by two, AA, alkaline batteries (2 x 1.5 V olts) and are shipped without the batteries installed.
8 be performed when the geographic elevation at which the product is being used changes by more than 500 feet. The sensor is best calibrated while mounted in the industry standard, 15mm I.D. “T” adapter . As in normal operation, the oxygen sensor responds best when installed in a vertical position with the sensor facing down.
6) Use the ↑ and ↓ arrow keys to adjust the displayed oxygen concentration to the level of the known concentration. Pressing the arrow keys changes the value in .1% increments. If the keys are held down for more than 1 second the display will scroll at a rate of .
10 T o use this function: 1) Place the external probe in room air . 2) Press the LOCKUNLOCK key to unlock the keypad. 3) Press and hold down the CALIBRA TE key . When the "%" sign start s to flash, press the ↓ arrow key to set the calibration value to 20.
Pressure Effect Readings from the MAXO 2 Monitor are proportional to the partial pressure of oxygen. The p artial pressure of Oxygen (PO 2 ) is equal to the percentage of oxygen (%O 2 ) times the absolute pressure (AP) at which the sample enviroment is measured.
12 3. OPERA TING INSTRUCTIONS 3.1 Alarm Setting Procedure 3.1.1 Low Alarm Setting T o adjust the low alarm setting: 1) Press the LOCK/UNLOCK key to unlock the keypad. 2) Press the LOW SET key . The "LOW" icon will start to flash. 3) Use the ↑ and ↓ arrow keys to set the low alarm to the desired value.
The high alarm value cannot be set closer than 1% from the low alarm value due to ASTM specifications. For example, if the low alarm is set at 50%, the system will not accept a high alarm setting less than 51%. Setting the high alarm to 100% turns off or deactivates the high alarm.
14 4. SENSOR REMOV AL AND REPLACEMENT The OM-25ME is shipped with a new MAX-250E oxygen sensor installed. Although the sensor has a very long expected life, eventually the sensor will require replacement. Removing or installing a sensor , when necessary , is a very simple procedure.
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 quickly as possible. • When the unit is in the power on mode and the LCD displays "000%," the sensor is not connected properly .
16 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.
8. APPLICA TIONS 8.1 Exposure to Anesthetic Gases Because of the unique chemistry of the oxygen sensors provided with the MAXO 2 Monitor , there are no significant effects when exposed to commonly used anesthetic gases, however , the monitor is not designed for exposure to flammable gas mixtures.
18 8.3 Calibration Errors The MAXO 2 Monitors 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.
Additionally , gas streams of high humidity may tend to condense on the sensor . Condensation on the sensor may eventually affect performance. For this reason, it is recommended that the sensor be mounted in a vertical position, facing downward to prevent condensate from flowing onto the sensing surface.
20 9. SP ARE P ARTS AND ACCESSORIES Part Number Item R12503-002 MAX-250E Sensor R212P91 Battery Cover R103P16 Monitor/Analyzer External Cable R212P17 Keypad R212P10 LCD Display R212P30-001 PCBA Board .
10. W ARRANTY The MAXO 2 Monitor is designed for medical oxygen delivery equipment and systems. Under normal operating conditions, Maxtec warrants the MAXO 2 Monitor to be free from defects of.
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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 MaxTech OM-25ME. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device MaxTech OM-25ME 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
