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ENMET680 Fairfield CourtAnn Arbor, MI 48108734.761.1270 Fax 734.761.3220www.enmet.comMedAir 2200Operation and Maintenance Manual
MedAirENMETTable of Contents1.0 INTRODUCTION . 31.1 Unpack . 31.2 Check Order . 31.3 Serial Numbers . 32.0 INSTRUMENT FEATURES . 42.1 Exterior Features . 42.2 Display Panel Features . 42.3 Circuit Board Features . 63.0 INSTALLATION . 73.1 Mounting of Instrument. 73.2 Sample Air Supply . 83.3 Power Supply . 83.4 Outputs . 83.4.1 Relay Contacts . 93.4.2 Optional 4-20mA Outputs . 103.5 Installation Verification. 104.0 OPERATION . 114.1 Normal Operation Condition . 114.2 Alarm Set Points . 114.3 Alarm Latching or Differential Settings . 124.4 Audio Defeat . 124.5 Display . 124.6 Operational Menu. 134.7 Fault Indications . 134.7.1 Low Flow Indication . 144.7.2 Other Fault Indications . 144.8 Dew Point Sensor Response . 144.9 Hydrocarbon Sensor Response . 145.0 MAINTENANCE . 155.1 Cleaning Instructions. 155.2 Maintenance Menu . 155.2.1 Accessing Maintenance Menu. 155.2.2 Maintenance Menu Flow Chart . 165.3 Calibration for CO, O2, HC and CO2 (Gas Channels) . 175.3.1A Low Cal/ZeroCal Adjust. 185.3.1B High Cal/SpanGas Adjust . 185.3.2 Set 4 –20mA Transmitter Scale . 195.3.3 Set Alarm Points . 205.3.4 Set Alarm Delay . 225.3.5 Relay Configuration . 235.3.6 Failsafe Configuration. 245.3.7 Set Output Span Range . 245.3.8 Set New Password . 255.3.9 Exit Maintenance Menu . 255.4 Sensor Replacement . 265.4.1 Oxygen / Gas Sensor. 265.4.2 Calibration/Sensor Replacement . 265.4.3A Low Cal/ZeroCal Adjust. 285.4.3B High Cal/SpanGas Adjust . 285.5 Dew Point Sensor . 295.6 Flow Control Orifice / Pre-filter . 296.0 TECHNICAL DATA AND SPECIFICATIONS . 307.0 REPLACEMENT PART NUMBERS . 317.1 ENMET part numbers for sensors and replacement parts: . 317.2 ENMET part numbers for Calibration equipment: . 31APPENDIX A: CO CHARACTERISTICS . 34APPENDIX B: GAS IONIZATION POTENTIALS. 35Manual Release Date – June 9, 2017Manual Part No. – 80002-042P age 1
MedAirENMETList of FiguresFigure 1: External Features of the MedAir 2200 . 5Figure 1A: Sample Air Hose and Regulator . 5Figure 2: MedAir 2200 Interior Features . 6Figure 3: MedAir 2200 Mounting Dimensions. 7Figure 2A: Relay, Input and Output Terminals . 8Figure 4: MedAir 2200 Operational Display . 11Figure 5: MedAir 2200 Operation Menu Flow Chart . 13Figure 6: MedAir 2200 Maintenance Menu Flow Chart. 16Figure 7: Connection of Calibration Gas Cylinder . 18Figure 9: Location of Gas Sensor and Dew Point Manifolds. 26Figure 7: Connection of Calibration Gas Cylinder . 28Figure 10: Carbon Monoxide Concentration . 34List of TablesTable 1 : Relay Failsafe Settings . 9Table 2: Sensor Output . 10Table 3: Typical Factory Alarm Set Points. 11Table 4: Factory Set Gas alarms Delay. 22Reference Information:NOTE: [important information about use of instrument]CAUTION: [affects equipment – if not followed may cause damage to instrument, sensor etc ]WARNING: [affects personnel safety – if not followed may cause bodily injury or death.]!Attention / WarningEarth GroundManual Release Date – June 9, 2017Manual Part No. – 80002-042P age 2
MedAirENMET1.0 IntroductionThe MEDAIR 2200 is a compressed air monitoring instrument that measures and detects certain hazards in medical air supply systems.The instrument is available with up to 4 internal sensors. Available sensors include, but are not, limited to carbon monoxide (CO),carbon dioxide (CO2), Hydrocarbons (HC) for variations in the oxygen (O2) content and for dew point. The sensors can be used aloneor up to four sensors can be used together. In the instrument, a sample of the compressed air is passed over each sensor and theresulting electrical outputs are used to evaluate the air for the target gases.Some features of the instruments are as follows: continuous monitoring of the sample air continuous LCD display of gas and vapor concentrations menu driven operational and maintenance controls menu driven calibration procedure audio and visual alarms indicate unsafe conditions alarm relay contacts available on terminals a fault relay and visual fault alarm low air flow fault indication and display alarm acknowledgement capability including audio defeat mA outputs for each target gasHydrocarbons (HC) are limited to gases with an ionization potential of 10.6 eV or less. See Appendix B for a list of gases and IPs.NOTE: All specifications stated in this manual may change without notice.1.1 UnpackUnpack the MEDAIR 2200 and examine it for shipping damage. If such damage is observed, notify both ENMET customer servicepersonnel and the commercial carrier involved immediately.Regarding Damaged ShipmentsNOTE: It is your responsibility to follow these instructions. If they are not followed, the carrier will not honor any claims fordamage. This shipment was carefully inspected, verified and properly packaged at our company and delivered to the carrier in goodcondition. When it was picked up by the carrier at ENMET, it legally became your company’s property. If your shipment arrives damaged: Keep the items, packing material, and carton “As Is.” Within 5 days of receipt, notify the carrier’s local office and requestimmediate inspection of the carton and the contents. After the inspection and after you have received written acknowledgment of the damage from the carrier, contact ENMETCustomer Service for return authorization and further instructions. Have your Purchase Order and Sales Order numbersavailable. ENMET either repairs or replaces damaged equipment and invoices the carrier to the extent of the liability coverage, usually 100.00. Repair or replacement charges above that value are your company’s responsibility. The shipping company may offer optional insurance coverage. ENMET only insures shipments with the shipping companywhen asked to do so in writing by our customer. If you need your shipments insured, please forward a written request toENMET Customer Service.Regarding ShortagesIf there are any shortages or questions regarding this shipment, please notify ENMET Customer Service within 5 days of receipt atthe following address:ENMET680 Fairfield CourtAnn Arbor, MI 48108734-761-1270 734-761-3220 Fax1.2 Check OrderCheck, the contents of the shipment against the purchase order. Verify that the MEDAIR 2200 is received as ordered. If there areaccessories on the order, ascertain that they are present. Check the contents of calibration kits. Notify ENMET customer servicepersonnel of any discrepancy immediately.1.3 Serial NumbersEach MEDAIR 2200 is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.Manual Release Date – June 9, 2017Manual Part No. – 80002-042P age 3
MedAir2.0 Instrument Features2.1 Exterior FeaturesThe exterior of the instrument is shown in Figure 1. The exterior features are as follows:FeatureEnclosureInput PortFront Cover LatchAudio AlarmMounting FlangesSample Air HoseENMETDescriptionAn engineered thermoplastic box, approximately 10x8x6, with a clear hinged front cover.The entrance for the air sample and calibration gas. The quick release fitting mates withone on the calibration adapter.A quick-release latch that holds the clear front cover in place, and is capable of beingpadlocked if desired.A loud horn activated by certain alarm conditions.Flanges with holes for mounting the enclosure to a vertical surface.A five foot long hose to conduct a sample of the air from the source to the instrument.The hose has a Female quick release fitting and Male ¼” NPT fitting. See Figure 1A.NOTE: When connecting to a standard 55 PSI USA Medical air system, Regulator is Not required.2.2 Display Panel FeaturesThe display panel, shown in Figure 1, is viewed through the clear front cover of the enclosure, and is accessed by opening thecover. Features are as follows:FeatureDisplay OPTION SwitchDescriptionA 2 line, 16 character per line, LCD with backlight.The numerical values of gas concentrations, and other information are displayed.On either sides of the display:A red alarm LED for each sensor installed in the instrument, Low level alarm.The top center of the panel:A red alarm LED for all sensors installed in the instrument, High level alarm.Near the center of the panel:A green power indicator LEDA red fault alarm indicator LEDThere are three of these, located near the center of the panel; they are yellowrectangular membrane switches. They are:The top left switch. SELECT SwitchDirectly to the right of the OPTION switch. Audio Defeat / AlarmAcknowledgeSwitchDirectly below the OPTION switch.VisualAlarms & IndicatorsPushbutton SwitchesManual Release Date – June 9, 2017Manual Part No. – 80002-042P age 4
MedAirENMETDisplay, see *note belowCO readingO2 readingDew Point readingVisual Alarm 2COppm*Visual Alarm CO(See *note below)DewPoint*Visual Alarm O2(If Oxygen option is installed)See *note belowALARMChannel #1Channel #2Channel #3Channel #4O2%*Visual AlarmDew Point(If Dew Point option isinstalled)See *note belowMale Quick Release FittingInput PortSample/CalibrationSee note belowSELECTSwitchPower LEDFront Cover LatchOPTIONSwitchFault LEDALARMACKNOWLEDGE/ALARM DEFEATSwitchAudio AlarmMounting Flanges2 placesFigure 1: External Features of the MEDAIR 2200* NOTE: Typical gas reading & alarm locations, depending on instrument configuration, alarms & readings may be in alternatelocationsNOTE: When connecting to a standard 55 PSI USA Medical air system, Regulator is Not required.Male¼” NPT FittingTo Air SystemFemale Quick Releaseto Sample PortSample Air Hose, 5ft Supplied with MonitorNOTE: Typical facility airline pressures range from about 55 to 125 PSI. The outlet pressure of theregulator can be connected to the inlet of the MEDAIR 2200 and should be set at 55 PSI, 5 PSI.Regulator not supplied with the monitorFemale Quick Releaseto Inlet Port to MEDAIR 2200¼”Example of Regulator, Not Supplied with MonitorFigure 1A: Sample Air Hose and RegulatorManual Release Date – June 9, 2017Manual Part No. – 80002-042P age 5
MedAirENMET2.3 Circuit Board FeaturesThe Display Panel is hinged on the left and is released by unscrewing the 2 screws located in the right corners. After releasing thepanel, it is swung to the left, exposing the interior of the enclosure. The Circuit Board is mounted at the back surface of theenclosure interior. Features are shown in Figure 2.FeatureRelay TerminalsOutput TerminalsSensor ManifoldDew Point ManifoldDescriptionThis group of terminals is located at the left side of the Circuit Board.For the contacts for each of four alarm relays, and for the contacts of a fault relay.One 4-20mA output per active channel. 2 channels/outputs per connector.The sample manifold, the carbon monoxide, carbon dioxide and oxygen sensors arelocated under this housing.The dew point sensor is installed into this housing.Flow Sensor4 – 20mA OutputTerminalsHorn Terminal4 placesRelay Terminals(6 places)DigitalCommunicationSensorManifoldDew Point TerminalOptionalSensor Dew PointIf Dew Point option isinstalledAux TerminalsOptional (2 places)Dew Point ManifoldIf Dew Point option isinstalledFuse Holders0.630 Amp(2 places)AudioAlarmGround ScrewJ21Power InputTerminal J23Figure 2: MEDAIR 2200 Interior FeaturesManual Release Date – June 9, 2017Manual Part No. – 80002-042P age 6
MedAirENMET3.0 Installation3.1 Mounting of InstrumentThe MEDAIR 2200 should be located near the pipe or tank containing the air to be monitored, and upstream from where the air isbeing used. The MEDAIR 2200 must be installed such that it samples the compressed air before it reaches the users.Mount the instrument on an appropriate vertical surface using the mounting flanges provided. Avoid areas with excessive vibrationor temperature extremes. The holes in the flanges are 0.31 inch in diameter and form a 6 x 10.75 inch rectangle. See Figure 3.It is recommended to use #8 drywall anchors and screws for mounting the MEDAIR 2200 to a drywall/sheetrock surface.Mounting Holes0.31” dia. 4 placesDimensions are in inches.Figure 3: MEDAIR 2200 Mounting DimensionsManual Release Date – June 9, 2017Manual Part No. – 80002-042P age 7
MedAirENMET3.2 Sample Air SupplyTap the pipe or tank containing the breathing air and use appropriate fittings to connect the sample input hose. The instrument isdesigned to operate from an air supply pressure 55 PSIG.The sample air exits the instrument from the hole plug located on the bottom of the enclosure. Take care not to obstruct this exitport.3.3 Power SupplyThe input power can vary from 100 to 240VAC, 50/60 Hz. Mains power should be connected to the Power Input Terminal J23 andthe ground screw J21. See Figure 2 for location.!WARNING: Continuous gas detection and alarm systems become inoperative upon loss of primary power.Upon supplying air and power to the instrument: The green power on LED is lit. The display backlight is lit, and instrument will step through a start-up sequence: unit serial number, software revision and gasesmonitored may be shown on the display.The instrument may go into alarm briefly, but the sensors stabilize quickly. If the instrument persists in alarm, acknowledge thealarm by pressing the AUDIO DEFEAT / ALARM ACKNOWLEDGE switch. If alarm persists longer than 30 minutes, call ENMETcustomer service personnel.3.4 OutputsTwo types of alarm outputs are available, relay contacts and 4-20mA outputs.Connector 2Channel 3 & 44-20mAO t tConnector 1Channel 1 & 24-20mA OutputRelay 1Channel 1Alarm 1Relay 2Channel 2Alarm 1Connector RS485Connector RS232Connector RS485Relay 3Channel 3Alarm 1Relay 4Channel 4Alarm 1Relay 5Channel 1-4Alarm 2Relay 6System FaultConnectorDew PointConnector4-20mA InputConnector4-20mA InputGround Screw J21Power InputTerminal J23Figure 2A: Relay, Input and Output TerminalsManual Release Date – June 9, 2017Manual Part No. – 80002-042P age 8
MedAirENMET3.4.1 Relay ContactsRelay contacts are available for each alarm; these are SPDT, rated at 10Amp at 110VAC, and may be latching or non-latching asrequired by the application.They are accessed on the terminals next to each relay see Figure 2 & 2A. The contact positions are noted on the circuit boardnext to each terminal.Relays may also be configured as failsafe or non-failsafe. The default alarm relay configuration is for latching mode, andfailsafe. They may be reconfigured in the maintenance menu. See section 5.3.5 & 5.3.6The PC Board is labeled for the relays in their un-energized state. If the relay is configured for failsafe, then this is also the alarmcondition state. Non-failsafe configured relays in the alarm state, are the reverse of the PC board labeling. Note that theFault(FLT) relay cannot be set to operate in a Non-Failsafe mode. Please see the Table 1 below:Table 1 : Relay Failsafe SettingsPositionJ5Relay 1 - NOJ5Relay 1 - COMJ5Relay 1 - NCJ6Relay 2 - NOJ6Relay 2 - COMJ6Relay 2 - NCJ8Relay 3 - NOJ8Relay 3 - COMJ8Relay 3 - NCJ10 Relay 4 - NOJ10 Relay 4 - COMJ10 Relay 4 - NCJ14 Relay 5 - NOJ14 Relay 5 - COMJ14 Relay 5 - NCJ15 Relay 6/FLT - NOJ15 Relay 6/FLT - COMJ15 Relay 6/FLT - NCFailsafe-AlarmNormally OpenCommonNormally ClosedNormally OpenCommonNormally ClosedNormally OpenCommonNormally ClosedNormally OpenCommonNormally ClosedNormally OpenCommonNormally ClosedNormally OpenCommonNormally ClosedNon-Failsafe-AlarmNormally ClosedCommonNormally OpenNormally ClosedCommonNormally OpenNormally ClosedCommonNormally OpenNormally ClosedCommonNormally OpenNormally ClosedCommonNormally OpenN/AN/AN/ARelays can be linked to specific alarms. The table below shows the default relay links. They may be changed in themaintenance menu if required. See Section 5.0.Channel 1Channel 2Channel 3Channel 4Relay 1Low AlarmRelay 2Low AlarmRelay 3Low AlarmRelay 4Low AlarmRelay 5High AlarmHigh AlarmHigh AlarmHigh AlarmIn addition, there is a fault relay, which changes state whenever the instrument is in a fault condition. The contact positions arenoted on the circuit board next to each terminal. See Figure 2A. The coil of this relay is energized when the instrument is inthe non-fault state; the contact conditions given on the circuit board next to the terminal, are for the non-energized state, whichis identical to the fault state.These relay contacts can be used to operate auxiliary alarms or other functions. It is recommended that power for auxiliaryequipment be supplied form an independent power source, separate for the MEDAIR 2200. Place a hole in the enclosure for awire exit, and use appropriate cable fittings. Be sure to note the location and depth of hardware inside the enclosure.Manual Release Date – June 9, 2017Manual Part No. – 80002-042P age 9
MedAirENMET3.4.2 Optional 4-20mA OutputsIsolated 4-20 mA outputs are available for data logging or other purposes. An output is supplied for each sensor su
Jun 09, 2017 · Check, the contents of the shipment against the purchase order. Verify that the MEDAIR 2200 is received as ordered. If there are accessories on the order, ascertain that they are present. Check the contents of calibration kits. Notify ENMET customer service personnel of any discrepancy immediately
