DIGITAL MXR-D FLOWMETER USER`S MANUAL
Contents
1. NITROUS OXIDE CONSCIOUS SEDATION SYSTEM COMPONENTS amp ACCESSORIES 1 aep um Flowmeter wih Power Supply and O 3 mes AS Ton sss N2O Hose Diss Diss SF ma O2 Hose Diss Dis BF m mem forms tem OOO MA mem 02 Hose 20ft OOO 12 A 2506 000 Ki Rubber GdsHook o Mounting Options for Bag Tee and VS O O o 13 120364 31 2 Wide Slide not shown 14 20362 5 WideSlide not shown 15 203731 7 Wide Under Cabinet Mt not shown SAFETY ADA Guidelines In addition to the fail safe and other safety features found on most sedation machines effective August 1976 the following Specifications were added to those required for acceptance by the ADA Council on Dental Materials and Devices 1 Emergency Air Valve 2 Non rebreathing Check Valve and 3 Resuscitator Quick Connect In addition the ADA Council requires that 1 The gas storage and delivery system meet the recommendations of the National Fire Protection Association NFPA 2 The system be installed by a competent supplier of gases and equipment NFPA Codes To assure safe operation and conformation to local fire codes Porter Instrument Nitrous Oxide Sedation Systems meet or exceed the guidelines established by the National Fire Protection Association for Nonflammable Medical Gas Systems NFPA 99 Copies of NFPA 99 or portions thereof may be obtained by writing to National Fire Protection Association Batteryma2. rubber goods 1 Fit so inner mask is secure to face but outer mask is just off face 2 Re adjust gas flows to obtain acceptable bag action 3 Replace valve 4 Replace inner mask 1 Re adjust gas flows to obtain acceptable bag action 2 Fit so inner mask is secure to face but outer mask is just off face PARTIAL LISTING OF REFERENCE MATERIAL Handbook of Nitrous Oxide and Oxygen Sedation Morris Clark e Ann Brunick Dentists Desk Reference Materials Instruments amp Equipment American Dental Association Helative Analgesia in Dental Inhalation Analgesia and Sedation with Nitrous Oxide Harry Langa D D S Conscious Sedation in Dental Practice C Richard Bennett Sedation A Guide to Patient Management Stanley F Malamed The Practical Use Nitrous Oxide Oxygen Conscious Sedation Robert E Hamric D M D 2 CERTIFICATE OF WARRANTY THIS WARRANTY IS GIVEN IN PLACE OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE Under no circumstances shall Parker Hannifin Corporation be liable for incidental or consequential damages as those terms are defined in the uniform commercial code Parker Hannifin Corporation Porter Instrument Division warrants that each product or part shall be free from defects in workmanship and materials under normal use and with appropriate maintenance for one 1 year from the date of delivery to customer
3. CER THIPICATE OF WARRANIY eae ubuttie este eco Eo uh due ccm ee ee 28 WARNINGS AND PRECAUTIONS These warnings and precautions are to help you to understand how to safely operate the MXR Flowmeter A WARNING alerts you to a possible hazard to people A CAUTION alerts you to the possibility of equipment damage WARNING Do not use this device for the administration of general anesthesia or as a part of or in conjunction with a general anesthesia administration system WARNING Dental workers are exposed to N O during administration of N2O Os conscious sedation analgesia NIOSH has recommended that exposures should be minimized Contact NIOSH 1 800 35 NIOSH to receive NIOSH Publications on Control of Nitrous Oxide in Dental Operatories Exposure can be minimized by effective controls National Institute for Occupational Safety and Health NIOSH publications state that controls including System Maintenance Ventilation and Work Practices can effectively reduce N O concentrations in dental operations Your flowmeter accessory Porter scavenger system is an important part of the system of controls WARNING Porter Instrument equipment utilizes the cross protection system The flexible hose and connectors that connect to the flowmeter are diameter indexed 3 8 O D for Nitrous Oxide and 1 2 for Oxygen The cross protection system is designed to prevent misconnection of Oxygen and Nitrous Oxide piping DO NOT ATTEMPT TO CHANGE THE DIAMETERS OR CONN
4. Turn On Standby Switch to the ON position 2 Flowmeter will continue to deliver the same mixture during a power outage but will not display the digital readout for N2O and Total Flow during the outage Refer to Usage During Power Outage To see initial sequence Power down unplug wait 1 minute power up Note The serial number of the unit will display when the unit is powered up If this continues to display contact your Porter dealer Turn On otandby switch to STANDBY Off and remove flowmeter for servicing Normal display condition for no flows Turn the Total Flow knob clockwise to reduce flowrate until below 14 L min Normal display condition for Oxygen only flows Display Condition Meaning Adjust N O and Total Flow knobs to desired concentration The display will change by every 0 5 Liter increments when the Total Flow knob is turned and the N2O will change by every 5 increments as you turn the knob 1 Possible failsafe failure 1 End procedure Confirm failsafe Nitrous Oxide is flowing operation by performing safety Failsafe Service without Oxygen or Nitrous check on Nitrous Oxide failsafe Is Required Turn Oxide is flowing more than system If failsafe failure is Off N20 Source 70 confirmed flowmeter should be removed for servicing 2 Follow Initialization Procedure Audible alarm will sound 2 This display may appear below If display continues to show Display will Flash after a
5. knob counter clockwise The display will change in increments of 5 To decrease the Nitrous concentration turn the N20 knob clockwise To increase Oxygen total flow turn the Total Flow knob counter clockwise The display will change in increments of 0 5 L min To decrease the oxygen total flow turn the knob clockwise The following table defines the various display conditions and their meanings Display Condition Meaning User Action Display is Blank PORTER Digital Display N20 O2 MXR Model No SN Serial No of Unit Ed Mixer Version Check Sum Self Check Error Service is Required High Flow Mode Display will also flash 50 60 N2O Max Audible alarm will sound O2 Flow N20 is blank 6 LIN 1 Unit s switch is in the STANDBY Off position 2 Power outage interrupted Note The restart from the power outage restores the display of N20 and Total Flow to the same as before the outage Initial sequence upon a power up of power supply On Standby Switch turned ON is not a power up Self checks are performed at start up and during operation Unit is not useable possibly due to a bad checksum or a failed voltage reference test There is no Oxygen flowing There is no Nitrous flowing N20 and Total Flow valves are shut tightly The unit is flowing Total Flow above 14 L min Oxygen is flowing 6 L min only There is no Nitrous flowing 14 1
6. movements every 60 seconds until endpoint achieved Patients may typically experience relief of anxiety tingling in extremities and euphoria Patients typically require less than 50 Nitrous 6 Watching primary digital display Flow Control knob may be re adjusted to bring the total flow of gases back to desired level when concentration is increased or decreased Note also Total flow is equal to the sum of right and left tube readings AN 7 When the procedure is nearing completion amounts of N O should be decreased Terminate the flow of N O and deliver 100 Os to begin a Itl d we minimum postoxygenation period of 3 to 5 minutes Assess the patient for _ 77 9214 appropriate recovery Administer additional Os if necessary Titration and ween post procedure 100 Os will minimize Nitrous exposure to the operatory potential patient side effects of lethargy headache or nausea and any potential adverse effects of Nitrous diffusion into air filled cavities 8 When procedure is finally completed turn off both control knob valves for gas shut off Place the On Standby off switch primary shut off mechanism in the STANDBY position Note If control valves are still open gas flows should stop at this point In STANDBY the MXR D will perform an auto zero of the unit Best Practices Recommend placing the unit in STANDBY mode at the end of a procedure or when the unit is not in use Place the swi
7. power interruption or Failsafe message follow Step 1 power outage above 1 Oxygen flowrate is below 1 Increase Oxygen flowrate by 1 L min turning the Total Flow Knob Low O2 Flow Turn counter clockwise Unit will stop Knob to Increase beeping O2 Flow Check O2 2 Oxygen regulator is 2 Check Oxygen regulator Source Tanks varying pipeline pressure manifold pressure setting should be 50 PSIG 2 PSIG Audible alarm will sound 3 Empty Oxygen cylinders 3 Replace with full cylinder Display will Flash 4 O2 Connect feature is in 4 Remove quick connect from O2 use Connect port to return display to normal Total Flow Normal display condition for N20 50 6 L M 5096 N5O setting When the O Flush button is activated pushed in extra O2 Flush Condition delivery of Oxygen about 35 Remove finger from Os Flush button L min is provided to the to deactivate Releasing button Display will not indicate breathing bag However the returns unit to flowrate and mixture accurate flow settings reading displayed by the ratio before flush activation digital display will not display the actual flow and percent The unit is flowing less than vnius GE red 25 L min of Oxygen when the q O Flush button is pushed in N20 96 Outside Tolerances Turn Knob To Reduce N20 N O measurement is Turn N O knob clockwise to above 70 096 concentration reduce decrease N2O flowrate INITIALIZATION PROCEDURE These steps are req
8. unit has detected the percent Nitrous is above 73 the display will revert to FAILSAFE SERVICE IS REQUIRED TURN OFF N2O SOURCE and an alarm will sound Again turn the knobs to reduce the high percentage or turn off N2O source 20 Nitrous Oxide Failsafe System Check Before Each Use Note Be sure O and N O are connected to your MXR and the line pressure for both gases is 50 PSIG which is standard Turn the Total Flow knob to the right clockwise until the pointer on the knob hits the stop and then turn the N2O Concentration knob to the right clockwise until the pointer on the knob hits the stop Turn the 96 N 0 concentration knob counter clockwise until the pointer is at the left edge of the eyebrow above the knob There should be no flow of N 0 indicated by the digital display or the flow tube indicator This is a check of the static position of the Nitrous Oxide Failsafe System valve Note A momentary low flow of N2O about 1 L min for about a second may be seen if the 96 N O concentration knob is turned to zero before turning the Total Flow knob to zero This is N O gas trapped between the Nitrous Oxide Failsafe System valve and the concentration knob valve and is a normal occurrence No other N O flow should be observed With the 96 N O concentration knob still set to the left eyebrow position turn the Total Flow knob until the display reads a flow of 6 L min total flow Turn the N2O concentration k
9. unless otherwise specified in writing All rubber and plastic parts and accessories are warranted under the same conditions for a period of ninety 90 days from date of purchase No statement or claim about the product by any employee agent representative or dealer of Parker Hannifin Corporation shall constitute a warranty by Parker Hannifin Corporation or give to rise to any liability or obligation of Parker Hannifin Corporation Parker Hannifin Corporation shall not be liable for any damage injury or loss arising out of the use of the product whether as a result of a defect in the product or otherwise if prior to such damage injury or loss the product was 1 damaged or misused 2 repaired altered or modified by persons other than Parker Hannifin Corporation 3 not installed in strict compliance with applicable codes and ordinances or 4 not instaled by an authorized Parker Hannifin Corporation dealer Parker Hannifin Corporation s obligation for breach of this warranty or for negligence or otherwise shall be strictly and exclusively limited to the repair or replacement of the product or part This warranty shall be void on any product on which the serial number has been altered defaced or removed ORDERS All orders are to be made through authorized Parker Hannifin Corporation distributors All biling will be done through said distributors Direct orders will be handled through the authorized local dealer as determined by Parker
10. void the warranty 10 Figure 1 96N2O Adjustment Knob PORTER Hen Or mre E 4 d O connect outlet instant response digital display m O2 Quick Connect On Off Switch N20 Flow Indicator Digital Display Readout PORTER DTGITHL DISP AT DIGITAL MXR D FLOWMETER FEATURES N20 Adjustment Knob Controls the concentration of N2O but does not change the Os flowrate 70 Maximum N O delivery Turn the knob counter clockwise to increase N O concentration Digital Display Readout Displays the 96 N O on the left side and Total Flow in L min on the right side The display reads N20 in increments of 5 The display will read in words for user conditions such as Low O2 Flow Increase O2 Flow Check O2 Source N2O Outside Tolerances Turn Knob to Reduce N2O and Failsafe Service is Required Turn Off N2O Source Ba Total Flow Adjustment Knob Controls the combined flow of O2 and N O or Os flow only when the 96 N O knob is turned clockwise until it hits the stop Turn the Total Flow knob counter clockwise to increase flow and clockwise to decrease O Connect Oxygen quick connect facilitates connection of positive pressure demand valve resuscitation equipment to the central system for emergency oxygen ON STANDBY Switch Dual function Selecting ON will turn on the flowmeter gas to the meter and the digital display Select STANDBY to turn OFF the gas to the meter and the digi
11. DIGITAL MXR D FLOWMETER USER S MANUAL Instructions and Safety Considerations Cabinet Mount MXR D Porter Conscious Sedation Flowmeter and Bag Tee Accessory PORTER TOTAL FLOW oxygen TOTAL FLOW aan Al G n Oo flush IVDXCRI D PET d RA instant response digital display Parker Hannifin Corporation Porter Instrument Division 245 Township Line Rd Hatfield PA 19440 USA 215 723 4000 fax 215 723 5106 FM 1061 Rev B 4 11 IMPORTANT READ MANUAL COMPLETELY BEFORE OPERATING THIS DEVICE Basic delivery technique is described Also this manual contains instructions on periodically required checks to be performed by the user These checks are necessary to insure the proper performance of this device and its safety features Retain this manual for future reference CAUTION Federal law U S restricts this device for use by or on the order of a physician dentist or licensed practitioner Date Purchased MXR D Model No 4065D Serial Number Dealer Name Dealer Phone No SSE UL Classified to 60601 1 Medical Equipment with respect to electric dl shock fire and mechanical hazard only in accordance with UL 60601 1 and CAN CSA C22 2 No 601 1 M90 Symbol Description i Protective Earth Ground Class Device Ny Alternating Current A Attention consult the accompanying documents Type B Equipment e Distribution of Porter Model 4065D is limited and controlled t
12. ECTORS OF THE FLOWMETER Tampering with the cross protection system constitutes acceptance of liability by the installer For your own protection as well as that of the Doctor and the patients use 3 8 O D tubing for all Nitrous Oxide lines and 1 2 O D tubing for all Oxygen lines To assure safe operation and conformation to local fire codes all Porter Instrument flowmeter systems are designed to be used with sedation delivery systems mounted inside walls and they meet or exceed the guidelines established by the National Fire Protection Association for Nonflammable Medical Gas Systems NFPA 99 Copies of NFPA 99 or portions thereof may be obtained by writing to National Fire Protection Association Batterymarch Park Quincy MA 02269 9904 or call 1 800 344 3555 WARNING New or modified installations properly connected gas pipelines are absolutely essential to patient safety The dealer or contractor should provide written documentation that all gas pipelines are connected properly and that the system has been pressure tested prior to use While this is a good business practice it is important that the user verify by their own test independent of the dealer or contractor that all gas pipelines are connected correctly prior to using the system The ultimate responsibility of assuring that lines are not crossed rests with the user WARNING Do not use an electrical cord with nicks cuts or other damage WARNING During any extended power
13. Flow is increased by rotating the knobs counter clockwise N O Metering 596 Knob Adjustment and Display Resolution N5O 5 from 0 to 70 Total Flow by 0 5 L min from 1 to 16 L min Operation of Total Flow Knob and Oxygen Flush Button The Os Flush Button on the flowmeter is used to add a high rate of Oxygen flow at any time The button may be pushed continuously by a user s hand the action operates independently from the Total Flow Knob Oxygen can be added to delivery approximately 35 L min and used to oxygenate the patient at the end of the procedure or at any other time The Total Flow Knob is able to operate through the complete flow range of normal 100 Oxygen flow and normal 0 to 70 Nitrous Oxide Oxygen mixture and the Oxygen flush adds flow Pressure Transducer To minimize the effect of drift the pressure transducer signals are auto zeroed at each STANDBY shut down initiated by the mechanical On Standby slide switch when the switch in placed in the STANDBY Off position Dual Function On Standby Off Switch Will turn On and Off electronic display as well as gas flow Provides positive mechanical gas pressure shut off that reduces the possibility of accidentally leaving the machine ON and also provides electrical On and Off for the digital display O2 Quick Connect Used for resuscitation and ventilation of non rebreathing patients and for delivery of 100 Oxygen to patients with respiratory difficulties Ox
14. Hannifin Corporation RETURNS No returns will be accepted unless authorized in writing by Porter Instrument Division and accompanied by a properly completed return goods authorization All returns are subject to a re stocking and possible rework charges to be determined by Porter Instrument Division Policies subject to change without notice The Quality System for Porter Instrument is Certified to ISO 13485 The scope of our registration is The design manufacture distribution and servicing of Dental Flowmeters Gas Scavenging Systems Gas Distribution Systems and Office Communication Systems for use in the Dental Profession 28 REVISION HISTORY Rev DATE ECN DESCRIPTION OF CHANGES DR CH APPR 0 3 8 07 07 0135 Formal Release ALE WHK SDL A 5 30 07 07 0322 Tech Specs Wall plug in 0 3A was 1000 ma ALE WAK TGT Wall junction box 0 4A was 300 ma p 7 update power supply in System Illustration p 11 delete O2 Flush display readout option p 15 O2 Flush Condition was O2 Flush Display will not indicate accurate flow settings was Display will flash However will not display the actual flow and percent was Low O2 flush is detected by the unit to Meaning column p 22 remove O2 Flush figure and reformat layout for Power Oxygen Flush section B 4 27 11 11 0094 Updated logo and address ANB DATE 3 8 07 ECN 07 0135 DR ALE DU Page 29 of 29 Digital MXR D NUMBER 0144430B Flowmeter User s Manual 29
15. K The MXR Flowmeter is designed to maintain its accuracy and performance without routine user maintenance being required The display measurement is auto zeroed at each STANDBY shut down The indicator tubes and ball floats are very resistant to accuracy changes over time such that the indicator tubes will maintain their accuracy Note Each indicator tube accuracy is 5 at the markings The user can check the relative accuracies of the concentration and total flow display by performing a simple check Servicing is indicated if the readings are out of tolerance jm loi b 177 Bien Ex LPi With the Nitrous off turn the Total Flow Knob until the display reads 6 L min Adjust the Total Flow knob so the ball float in the Oxygen tube is within the large circle flow guide See figure below oxygen PORTER instant response digital display 2 Turn N2O knob until the display reads nitrous PORTER INSTRUMENT 50 The figure below shows the float within the circle flow guide of the Nitrous tube on the left and the float within the circle flow guide of the Oxygen tube on the right Ball Float oxygen E 1 5 3 PORTER k v ous Se P i nu E Tou Jl Sie ID UP das LPT je 1 instant responsa digital display 23 3 The ball float in the Nitrous indicator tube should be within the large circle flow guide and no more than half of the ball float should be out of the large circle flow guide The figur
16. Os flow in the O tube Cannot get 9 L min Os flow with N2O concentration knob OFF and flow control knob full ON Ballooning of the gas bag Patient not feeling effects of gases Bag is going flat during procedure POSSIBLE CAUSE 1 Os ON Supply not turned 2 Machine not connected to pipeline system 3 Empty O cylinders 1 N2O supply not turned ON 2 N O cylinder empty O gt regulator is pipeline pressure varying Failsafe failure Low Ov pressure setting 90 Elbow connected onto bag tee is pushed on too far blocking movement of the non rebreathing valve 1 Outer mask is not fit properly to patient s face 2 Gas flows do not meet patient s requirement 3 Inner mask s exhalation valve IS missing 4 Inner mask is missing must have inner and outer mask together 1 Gas flows do not meet patient s requirement 2 Outer mask is not fit properly to patient s face 26 REMEDY 1 Turn Os tank room ON 2 Connect to wall outlet regulator in 3 Replace with full cylinder 1 Turn ON N5O cylinder 2 Replace with full cylinder Check O regulator Be sure O manifold pressure is 50 PSIG 2 PSIG If not call Dealer for service Take out of service and return to Porter Check Os regulator Be sure O gt manifold pressure is 50 PSIG 2 PSIG If not call Dealer for service Remove rubber goods and 90 elbow from bag tee Reconnect elbow and
17. athing Check Valve Prevents rebreathing of used gases and guards against CO build up DIRECTIONS FOR USE Note These directions detail a basic delivery technique However this is not a comprehensive description and not a substitute for a training course that emphasizes a practical hands on approach together with instruction on safe administration techniques Topics covered in such a course will include experiences of practitioners in specific dental clinical settings the pharmacokinetic properties of Nitrous Oxide strategies to avoid over sedation and allow for biological variability and strategies to maximize patient satisfaction Refer to Basic Delivery Technique on the following page IMPORTANT Before using the Digital MXR D Flowmeter check the operation of the unit by performing the Safety Feature Checks to ensure that your analgesia unit is performing correctly Refer to Flowmeter Features in Figure 1 Maintain patient observation during procedure Move the On Standby Switch to the ON position Open N20 O tank valves E D NE Using Total Flow knob set flow rate of O to desired rate keep bag about Ze full Rotate flow knob counter clockwise to increase flow 5 Set N 0 concentration to desired level by turning the NeO knob counter clockwise to increase concentration as read by percentages shown on the digital display Turn knob slowly until desired level is achieved Practice titration with 1096 nitrous upward
18. ave the following specifications Regulator should be pre set at 50 PSIG 2 PSIG static Inlet fitting per CGA 326 Outlet fitting per N O DISS IO micron filter on inlet Self resetting safety relief valve pre set to 100 10 PSIG 0 1500 PSIG color coded pressure gage Maximum flow capacity of no less than 100 LPM Droop shall be a maximum change in regulated pressure of 8 from 0 150 LPM when supply is 800 PSIG Regulation of the supply pressure should not change by more than 496 of set pressure at a flow of 75 LPM UL Listed Installation shall conform to local codes with respect to pressure relief INTENDED USE Flowmeter for Analgesia Delivery System This device is intended for patient adult and pediatric use by an attending physician or dentist properly trained in its use Porter Instrument recommends the user be thoroughly familiar with the use of Nitrous Oxide Oxygen Conscious Sedation for patient analgesia and be properly trained in its administration prior to using this product For training requirements on the administration of Nitrous Oxide Oxygen Conscious Sedation contact the appropriate regulatory authority in your country state or province Training is recommended to provide a practical hands on capability and an understanding of the behavioral aspects of Nitrous Oxide Sedation and will complement the safety features of this device USE SCAVENGING Monitor for N O in the operatory to insure
19. e below shows the ball float position to be within tolerance nitrous Ball Float il gt od Cum 2 zi m z pam ae EOF a 15 Circle Flow Guide with Ball Float Within Tolerance Note The figure below shows the ball float position to be out of tolerance f oxygen Ball Float Ir 2 uL 191 Zz P k O e Circle Flow g EK Guide with Ball Float Outside Tolerance TECHNICAL SPECIFICATIONS Physical Dimensions 12 6 W 4 3 H 3 9 D Cut out hole 11 x 3 5 8 Weight 8 Ibs Fittings Fresh Gas Outlet 15mm ID x 22mm OD Diameter Index Safety System Nitrous Oxide Inlet Male DISS CGA 1040A Oxygen Inlet Male DISS CGA 1240 Diameter Index Safety System Environmental Storage Temperature 10 F to 150 F Allow to stabilize to room temperature before operating Operating Temperature 60 F to 85 F Humidity Ambient non condensing Gas Supply Oxygen Inlet Pressure Requirements 50 10 PSIG Flow Requirements 30 L min Minimum Flow Note A minimum Oxygen flow of 120 L min is required when using the optional Demand Valve Resuscitator Nitrous Oxide Inlet Pressure Requirements 50 10 PSIG Flow Requirements 10 L min Minimum Flow Minimum Nitrous Oxide Concentration 0 UL CLASSIFICATION Gas Delivery Oxygen Flush 35 L min Minimum 50 PSIG input Maximum Nitrous Oxide Concentration 70 Minimum Oxygen Concentration 30 Maximum Oxygen C
20. eliver 100 Os to oxygenate the patient 4 When the procedure is completed turn the On Standby switch to the STANDBY Off position until power is restored 10 L min Flow Tube Indicators Note Read Center of Ball Float Ball Float Ball Float Position for Position for N20 O Total Flow 6 L min Circle Flow Guide 3 L min ECH e Circle Flow Guide PORTER INSTRUMENT 1 L min 16 FLOWMETER ACCESSORIES Three or Two Liter Reservoir Bag Install the reservoir bag by sliding the opening over the outside of the bag tee downspout The bag moves in and out with each inhalation and exhalation and becomes a visual barometer for monitoring the patients respiration rate Refer to FM 809 for User Instructions Assembly Installation and Cleaning Positive Pressure Demand Valve The Porter flowmeter is equipped with a Resuscitator Quick Connect N20 which allows for the attachment of an Oxygen Demand Valve The Demand Valve Resuscitator provides a fast simple and effective means to ventilate non breathing patients and provide 100 Oxygen nitrous on demand The resuscitator flow rate is limited up to 40 LPM in line Loi with the 1992 American Heart Association Recommendations and ot Guidelines for Resuscitation Refer to the User 3 Instructions supplied with this product for complete O2 connect LL details SS Resuscitator Quick Connect Gas Scavenger Breathing Circuit Gas scavenger system is used to remove exha
21. erly connected gas pipelines are absolutely essential to patient safety The dealer or contractor should provide written documentation that all gas pipelines are connected properly and that the system has been pressure tested prior to use While this is a good business practice it is important that the user verify by their own test independent of the dealer or contractor that all gas pipelines are connected correctly prior to using the system The ultimate responsibility of assuring that lines are not crossed rests with the user Do not allow crossed lines to defeat the safety features of the dental flowmeter and or central gas supply manifold systems Crossed lines will create a dangerous and hazardous condition where 100 Nitrous Oxide will be delivered through the Oxygen dental flowmeter tube and subsequently to the patient In addition the resuscitator quick connect would deliver 10096 Nitrous Oxide to an Oxygen demand valve Maintain patient observation during procedures Prevent over sedation If a patient becomes over sedated when being delivered 100 Oxygen it is a definite indication of crossed lines If crossed lines are suspected remove the nasal mask immediately and encourage mouth breathing Deliver pure Oxygen from an Oxygen demand valve only if the Oxygen source is independent from the suspected crossed lines area To check for crossed lines of an installed Porter Vanguard or Sentinel Manifold System 1 At the manifold sys
22. g tee should not rotate Connecting AVS to Vacuum Hoses Attach one end of the vacuum hose to the vacuum hose Y connector and the other end to the MASK port of the AVS Attach a second vacuum hose to the VAC port of the AVS and the other end to the vacuum source Refer to FM 809 for User Instructions Assembly Installation and Cleaning Porter recommends that effective scavenging can be achieved with the ball float in the green bar area of the acrylic sight glass however NIOSH publications conclude that higher vacuum flows of up to 45 L min are most effective To meet the NIOSH recommendation of 45 L min adjust the ball above the green bar area CAUTION DO NOT PROCESS ANY LIQUIDS OR DEBRIS THROUGH THE AVS This contamination can cause damage and affect the function of the unit The AVS is designed to regulate the vacuum flow level for scavenging of Nitrous Oxide Oxygen gas only CAUTION The vacuum system should be equipped with a back flow shutoff device to prevent carryover of fluids into equipment attached to the piping systems t is recommended that a separate vacuum trap be used between the piping system and the vacuum station inlet or any equipment that is attached to the system In line Vacuum Control Kit Option The kit includes a vacuum control block with sight glass vacuum tube holder adapter T and straight fitting The vacuum control block can be inserted directly into the High Volume Evacuation HVE line or may be placed i
23. ight flow of the Nitrous tube Thus given any line of sight reference on the front panel when the ball floats are at the same height the percent Nitrous Oxide is 50 Similarly when the Nitrous ball float is lower than the Oxygen ball float the percent Nitrous Oxide is less than 50 When the Nitrous ball float is roughly one half the height of the Oxygen ball float the percent Nitrous Oxide is roughly 33 The chart below may be used as a guide USAGE DURING POWER OUTAGE Note If the power is interrupted to the unit the unit will continue to deliver the same mixture setting during the power outage but the device will not display the digital readouts for the NO and Total Flow The knobs may be adjusted to move the ball float to the desired positions When safely possible discontinue the procedure using normal delivery techniques as described below Refer to Monthly Calibration Check which describes the use of the Circle Flow Guides and how to read the ball float position using these guides 1 Rotate knobs to appropriate positions using the chart and figure below as a guide 2 Place the center of the ball float at the desired setting for the N O and the desired setting for Os Total Flow to achieve the N 2O Setting Refer to sections on Directions for Use and Basic Delivery Technique 3 When the procedure is nearing completion decrease the amounts of N20 by turning the 96 N O left knob and then terminate the flow of N2O and d
24. ital display will show the normal blank no numbers no flow display observe indicator tube float positions as well 1 If the Oxygen flow is below 1 L min the display will flash and read LOW O2 FLOW ares gem TURN KNOB TO INCREASE O2 FLOW ms CHECK O2 SOURCE TANKS Note An uy audible alarm will sound if some nitrous is still i HEOK 02 SOURCE flowing No alarm will sound if nitrous is not Oz connect A ire flowing instant response digital display MRS 2 With total loss of oxygen the Nitrous Oxide delivery is automatically shut off The digital display will reflect status with blank Total Flow and numbers 3 When Oxygen flow is restored to above 1 L min the display will return to normal High Nitrous Percentage Detection The MXR D Flowmeter has a feature to detect a High N O Percentage above 70 concentration which is outside of the tolerances If the N2O concentration knob is turned to the highest mechanical stop full counter clockwise the MXR D may detect and then read OUTSIDE TOLERANCES TURN KNOB TO REDUCE N2O 1 To reduce the percentage of Nitrous Oxide ses See See simply adjust the N O and Total Flow P m knobs by turning clockwise until the Sei ee percentage of Nitrous Oxide reduces to 70 REDUCE N21 or below concentration The digital display 02 come 1 will then return to normal DEE 2 f any serious failsafe fault condition results in a significantly high N O percentage and the
25. l environmental conditions Indoor use Altitude up to 8000 feet 2 438 meters Temperature from 5 C to 40 C Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C Mains supply voltage fluctuations up to 10 of the nominal voltage Transient over voltages typically present on mains supply Normal pollution degree The Porter Digital MXR D controls both Oxygen Oz and Nitrous Oxide N20 Both gases could be present in an over pressure event that requires the manifold system to have a safety relief valve to function DIS Upon Maximum system pressure is not to exceed 60 PSIG Product was tested for Electromagnetic Immunity per IEC 61000 4 3 24 Performance and Accuracy Digital Flow Display Indicates flow in L M with accuracy of 0 5 L M Oxygen flow and 0 5 L M Nitrous Oxide flow Maximum N O Concentration 70 Nitrous Oxide Failsafe System Dual seal oxygen piloted valve system that automatically maintains the N2O concentration setting with any change in the Os flow or pressure N20 flow is proportionately reduced if Os is shut off or pressure is reduced 2e N O Concentration and Total Flow Control Knobs Total Flow adjustment knob which controls flow of both N O and Os at any desired concentration Total Flow can be adjusted at a chosen concentration Includes posi stop needle valves for adjustment of all flows prevents damage to valves and seats
26. led gases during a dental analgesia conscious sedation procedure in a dental operatory The breathing circuit consists of a 22mm 90 elbow connector fresh gas coaxial tubing a corrugated hose and hood assembly Attach the nasal inhaler to the coaxial tubing assembly using the diameter indexed connectors Attach one end of the fresh gas corrugated tubing to the coaxial tubing assembly at the fresh gas Y connector and the other end to the 22mm right angle adapter Press fit the 22mm right angle adapter onto the bag tee Attach a 2L or 3L reservoir bag to the bottom downspout of the bag tee Attach the vacuum hoses to the vacuum control source AVS or In line Vacuum Control Block Refer to FM 809 for User Instructions Assembly Installation and Cleaning 5061 Connector Installation Do not install 2 connectors together Fresh Gas PS dus imm 3mm ID ID 17 Automatic Vacuum Switch AVS Option The AVS is used to control the vacuum flow in the gas scavenger breathing circuit and assure that the scavenging system is activated as soon as N5O O is turned ON Adjust the vacuum flow using the control knob Vacuum flow is most effective when the ball float is set within the green bar area Installation of AVS to Flowmeter Screw AVS 5000 knurled seal nut down tight onto flowmeter making sure the rubber washer is inside the seal nut When tight the AVS should not rotate Then screw the bag tee seal nut onto the AVS Ba
27. m one tank to the second tank at a timed interval increasing the gauge back to 50 PSIG The gauge then should eventually go down to zero If the Os pressure does not go down as described above and remains at about 50 PSIG it indicates a crossed lines condition 4 f Oo pressure does not go down proceed to the next crossed line determination check Turn N2O tanks off in the manifold tank room and watch the N2O gauge Given a crossed line condition the N2O gauge will now go down the Vanguard system will show a switching similar to step 2 above this shows the O valve of the flowmeter is bleeding the crossed N2O lines The N2O gauge will go down to zero The initial installation potential problem DISS Diameter Index Safety System is modified at tank room wall when 3 8 inch Nitrous Oxide pipe is increased to 1 2 inch pipe size Oxygen pipe remains at the normal 1 2 inch size Both Nitrous Oxide and Oxygen piping is maintained at a common 1 2 inch size throughout the building walls leading to operatories At gas outlet station the Oxygen 1 2 inch pipe is incorrectly decreased down to the DISS 3 8 inch size reserved for Nitrous Oxide lines Oxygen is fed into the Nitrous Oxide lines Do Not Allow Crossed Lines to Defeat Equipment Safety Features Crossed lines in wall structure piping creates hazard of 100 Nitrous Oxide delivery to nasal mask and Oxygen demand valve when Flowmeter is set for 100 Oxygen resulting in o
28. n Standby Switch should be placed in the STANDBY off position for final shut off of the unit an auto zero of the unit will be performed NOTE If your unit does not operate as described in Steps 1 through 10 under Directions for Use please contact your Dental Dealer or Porter Instrument MAINTENANCE AND SERVICE It is advisable on a two 2 year cycle to have the MXR Flowmeter factory checked and serviced The Nitrous Oxide Failsafe System is made of moving parts Between servicing intervals it is advisable to safeguard against potential malfunctions by performing the failsafe check before each and every use of the unit Safe operating techniques learned during your N O CO Conscious Sedation training should always be used Inspect and maintain the analgesia delivery system to prevent N O leaks in all hoses connections and fittings Repair all leaks immediately CLEANING METHODS We recommend the use of an approved disinfectant for the dental environment for cleaning the outside of the flowmeter and accessories Do not spray disinfectant directly onto meter Spray disinfectant into disposable towel and wipe unit thoroughly removing excess disinfectant to eliminate buildup 13 DIGITAL DISPLAY READOUTS The digital display shows a primary and precise digital number readout for the N O concentration setting on the left side and the Total Flow in L min on the right side o increase the Nitrous concentration turn the N O
29. n line by cutting the vacuum hose and attaching the cut ends of the tubing to both ends of the vacuum control block Adjust the vacuum flow using the control knob Vacuum flow is most effective when the ball float is set within the green bar area Refer to FM 809 for User Instructions Assembly Installation and Cleaning 18 BAG TEE The Bag Tee assembly features a Non rebreathing Valve and an Emergency Air Intake located on the Bag Tee which comply with American Dental Association guidelines The non rebreathing valve has a back flow check valve which prevents exhaled gases from entering the breathing bag no carbon dioxide buildup The emergency air intake has a valve that allows room air to be inhaled into the breathing circuit by the patient A breathing bag is attached to the metal portion of the Bag Tee and is a reservoir bag for the delivered analgesia gases which when taken together with the two valves above becomes the visual barometer for monitoring the patient s respiration rate The bag moves in and out with each inhalation and exhalation Bag Tee Installation to Flowmeter Screw knurled seal down tight onto flowmeter making sure the rubber washer is inside the seal nut When tight the bag tee should not rotate Note Fit mask to patient so inner mask is pulled down tight secure to the face Outer mask should not be against the face Vacuum needs to be drawn into outer mask during inhalation Non Rebreathing Valve Check Monthl
30. ng every flush button activation Disconnect the corrugated rubber tubing from the bag tee outlet With both knobs positioned Dag ee so the pointer hits the stop depress the power Guill O flush button while blocking the flow from the front of the bag tee For proper operation the gas reservoir bag should fill within about 5 seconds Also Test to Check 3 L Bag Rubber Goods for Leaks following Steps 1 through 6 in the following section Quick Test to Check Reservoir Bag Rubber Goods for Leaks With the flowmeter bag tee and Porter rubber goods in place remove the nosepiece and one of the two plastic connectors from the Porter rubber goods Refer to Figure 2 With the other plastic connector join the two duplex hoses together making a closed system Taking care not to fill the bag too much bag could burst open the Oxygen control valve until the reservoir bag starts to over inflate or balloon then close the valve Observe the reservoir bag for five minutes The bag should stay inflated If so the test has been successful and there are no excessive leaks If the bag does not stay inflated the reservoir bag or rubber goods have an excessive leak Replace any parts that leak and retest until results are successful Disconnect one of the duplex hoses from the plastic connector and re install the nosepiece Figure 2 Hemove one connector and join hoses together Reservoir Bag 22 MONTHLY CALIBRATION CHEC
31. nob until display reads N2O 50 You should observe an equal amount of N O flowing by equal height ball float positions while gradually turning the Total Flow knob The digital display will track 5096 and changing total flow Interrupt the flow of Os This will check the dynamic status of the Nitrous Oxide Failsafe System valve This can be done by either disconnecting the Oxygen hose from the wall or shutting off the Oxygen at the tank The Nitrous Oxide flow should drop as the Oxygen flow decreases stopping completely before the Oxygen float drops to the bottom If the unit detects a failsafe failure high N2O percentage the display will read FAILSAFE TURN OFF N20 SOURCE SERVICE IS REQUIRED The display will flash and an audible alarm will sound This message will continue to be displayed in sequence unless the percent of Nitrous drops A WARNING If the Nitrous Oxide Failsafe System fails to perform as indicated do not 5h N20 PO RATER TOTAL FLOW trous oxygen use this product prior to repair a v Improper function of this safety fol dence Li feature may permit Nitrous Oxide to EN 1 le le flow independently of the flow coma DDT tert TS Ww Gti control knob potentially allowing aos s Nitrous Oxide to flow to the patient without Oxygen 21 Power Oxygen Flush Check Monthly Mechanical Check 0 Supply Pressure at 50 PSIG Note the O2 flush is monitored for minimum flow by the MXR D duri
32. o United States and Canada only e he Porter Model 4065D incorporates fusing only in the ungrounded phase conductor This product must not be used in countries other than the United States and Canada and must be used only in health care facilities on grounded systems where conditions of maintenance and supervision ensure that only qualified persons will service the electrical distribution system For Technical Assistance contact Dental Customer Service Parker Hannifin Corporation Porter Instrument Division 245 Township Line Road Hatfield PA 19440 USA Phone 215 723 4000 Fax 215 723 5106 Internet www porterinstrument com Table of Contents WARNINGS AND PRECAUTIONS geed ti ttn Reb eae nec pacer pote Haben ea eden Le Haa es es geed 4 RT ER E E EEN H EE 5 Do Not Allow Crossed Lines to Defeat Equipment Safety Features 6 NITROUS OXIDE CONSCIOUS SEDATION SYSTEM ILLUSTRATION eeeeees 7 NITROUS OXIDE CONSCIOUS SEDATION SYSTEM COMPONENTS amp ACCESSORIES 8 SAFET E 9 PI wed eebe eet 9 hug NON T ans 9 GASSUPPEXICONINEGCTTIOU Nc nscdedt cz dnte duco sous p nn 9 TANK REGULATOR SPECIFICATIONS en he danse cie 9 OX ocn TOR a nd ur pM Pt tn UE 9 Nitrous Te E EE 9 INTENDED USE Flowmeter for Analgesia Delivery System 10 crm RS ISI 10 MONTHEY LEAK CHEC R SN ee in R 10 SWITCHABLE CONNECTORS EE 10 DIGITAL MXR D FLOWMETER FERATURESR NNN 11 DIRECTIONS POR EE 12 basic Deliver
33. oncentration 100 Flow Range at 100 Oxygen 1 to 10 L min Total Flow Range at Mixture up to 12 L min Low end flow limited by 1 0 L min Oxygen limit Accuracy 0 5 L M Oxygen flow and 0 5 L M Nitrous Oxide flow Electrical Power Supplies Wall Plug in Input 115 Vac 60 Hz 0 1A Max Unit is for 115 Vac use only Output 12Vdc 0 3A Max The Branch Circuit breaker is the main disconnect In Wall Junction Box Input 115 Vac 60 Hz 0 1A Max Output 12 Vdc 0 4A Max The main 110 Vac Branch connection is to be wired per NEC and local electrical codes The branch circuit breaker is the main disconnect Porter recommends the following 15A UL circuit breaker two wire with ground The Porter Digital MXR D is UL Classified to 60601 1 Medical Equipment with respect to electric shock fire and mechanical hazard only in accordance with UL 60601 1 and CAN CSA C22 2 No 601 1 M90 The system consists of the Digital MXR D and Power Supply The following are UL classifications for the Porter Digital MXR D 1 ls not intended to be used with or in the presence of flammable anesthetic mixtures 2 Is classified as ordinary equipment and is designed for continuous operation 3 Has safety protection provided in the equipment If the equipment is tampered with or used in a manner not specified in this manual the safety protection provided by the equipment might be impaired The Porter Digital MXR D is designed to be used in norma
34. outage remember to turn the On Standby Off 2 switch to the STANDBY position on the flowmeter and manually turn OFF the tank valves With centralized electrically powered gas systems if gas was flowing when the power went out and the flowmeter is left ON gas will be flowing when the power is restored CAUTION Federal law U S restricts this device for use by or on the order of a physician dentist or licensed practitioner CAUTION Always use clean dry medical grade gases Introduction of moisture or other contaminants into this device may result in defective operation CAUTION Do not attempt to repair alter or calibrate this device Unauthorized repair alteration or misuse of this device is likely to adversely affect the performance and will void the warranty CAUTION Never oil or grease any part of this system minimize fire or explosion potential CAUTION There are no user serviceable parts inside this unit A shock hazard exists if power is not disconnected prior to any internal servicing or maintenance Always disconnect the power source before inspection or repair CAUTION Do not change any internal factory set adjustments The Porter Digital MXR is adjusted and calibrated for proper operation prior to shipment Any change could alter the specified operation and accuracy A CROSSED LINES WARNING NEW OR MODIFIED INSTALLATIONS ALWAYS ASSURE THAT LINES ARE NOT CROSSED WARNING New or modified installations prop
35. rch Park Quincy MA 02269 9904 USA or call 1 800 344 3555 GAS SUPPLY CONNECTION After installation of the flowmeter connect the Nitrous Oxide and Oxygen supply lines to the Diameter Indexed Safety System DISS fittings located on the back of the flowmeter unit lt is important that the regulators for both gases be set to give pressures in the range of 50 PSIG 2 PSIG Confirm the absence of leaks at pressure connections on the unit Bubbles will appear at leaking locations when a soap water solution is used This procedure is recommended each time a cylinder is changed TANK REGULATOR SPECIFICATIONS Oxygen Regulator Use Porter O2 Regulator part number 7000 2 or the Oxygen tank regulator should have the following specifications Regulator should be pre set at 50 PSIG 2 PSIG static Inlet fitting per CGA 540 Outlet fitting per Oo DISS IO micron filter on inlet Self resetting safety relief valve pre set to 100 10 PSIG 0 4000 PSIG color coded pressure gage Maximum flow capacity of no less than 150 LPM Droop shall be a maximum change in regulated pressure of 8 from 0 150 LPM when supply is 2000 PSIG Regulation of the supply pressure should not change by more than 496 of set pressure at a flow of 75 LPM UL Listed Installation shall conform to local codes with respect to pressure relief Nitrous Oxide Regulator Use Porter N O Regulator part number 7500 2 or the Nitrous Oxide tank regulator should h
36. tal display and perform auto zero Note The flowmeter still has power in the STANDBY position 11 Total Flow Adjustment Knob TOTAL FLOW oxygen e ITE 1 10 ON REN O flush SPD O2 Flush Actuator O2 Flow Indicator N O and O Indicator Tubes Visual flow tubes indicating flowrates in L min of Nitrous Oxide and Oxygen Nitrous tube with 1 L min marking Oxygen tube with a 1 and 10 L min marking Each tube has a small Circle Flow Guide which indicates 3 L min of flow when the float is set at the center and a larger Circle Flow Guide which indicates 6 L min of flow when the float is set at the center Ball float height flow of the Oxygen tube is 1 1 proportional to the ball float height flow of the Nitrous tube Thus given any line of sight reference on the digital display front when the ball floats are at the same height the percent nitrous oxide is 5096 Oxygen Flush Button Provides extra delivery of Os Button is accessible to add O2 flow to all other gas flows Color coded for Oxygen Failsafe Dual seal oxygen piloted valve system that automatically maintains the N20 concentration setting with any change in the O2 flow or pressure NO flow is proportionately reduced if Os is shut off or pressure is reduced Gas Scavenging amp Bag Tee Not Shown Emergency Air Valve Automatically provides patient with ambient Air if gas flow is interrupted for any reason Non rebre
37. tch in the Standby position This will auto zero the unit for optimum performance 10 Turn OFF the gas supply at the tank at the end of the day 12 Basic Delivery Technique Practice titration Titration is a method of administering a substance by adding definitive amounts of a drug until an endpoint is reached For Nitrous Oxide Oxygen N20 Oz sedation N5O is given in incremental doses until a patient has reached a comfortable relaxed state of sedation The ability to titrate N 0 is a significant advantage because it limits the amount of drug to that which is required by the patient If titration is done properly the patient does not receive any more of the drug than is necessary The amount of N2O required by a patient on any given day or time varies Clark Brunick For information on titration a most valuable resource for the practitioner is the Handbook of Nitrous Oxide and Oxygen Sedation written by Clark and Brunick and published by Mosby www mosby com This text is a concise and contemporary guide for Nitrous Oxide Oxygen administration IMPORTANT NOTE When the 96 N20 concentration knob is open the Total Flow knob is closed and there is no N2O flow indicated in the flow tube the Nitrous Oxide Failsafe System will stop the flow of N O However this safety feature should not be used as the primary shut off mechanism The 96 N O and Total Flow control knobs are for primary shut off After primary shut off the O
38. tem in the tank room start the check from an operating system with 50 PSI showing on both gauges and the indicator lights turned on electrical operation and alarms needed for the Vanguard test Then turn off both Oxygen tanks and leave both Nitrous Oxide tanks on For the Sentinel only one tank of each gas is on at a time Turn off the one open Oxygen tank leave on the one Nitrous Oxide tank turn off the indicator lights eliminates alarms during the Sentinel test 2 n the operatory where the flowmeter is installed flow 5 to 6 liters per minute of Os only Verify that the N O flowmeter valve is in the off position and that there is no indicated flow of N O by observing the ball float resting at the bottom of the glass N2O flow tube This action will bleed the Oxygen copper tubing lines 1 2 OD from the manifold through the office walls to the flowmeter Note this action does not cause a quick bleed down as there is a fair sized volume in the lines Os flow would be observed by the position of the ball float in the O flow tube for several minutes 3 Rather than waiting for the Os flow to decrease go back to the manifold tank room and observe the O pressure gauge on the manifold normally showing approximately 50 PSIG pressure The line pressure should start to decrease indicating bleeding of the O that is no longer being replenished by the tanks On Vanguard systems the alarm will beep at 40 PSIG a switch will occur fro
39. that controls are effective in achieving low levels of ppm parts per million exposure Contact your Porter dealer for details on monitors and testing MONTHLY LEAK CHECK Monthly leak check or if connections to flowmeter are disconnected and then reconnected such as after a flowmeter service at the factory or if the DISS DISS hose is replaced Leak test the flowmeter system for working pressure leaks After all hose connections are tightened turn the N20 and Total Flow control knobs clockwise to the off position and the On Standby Off switch to the STANDBY position Confirm that the DISS Shut Off Valves are in the open position Pressurize the sedation gas supply lines with 50 PSIG Observe any pressure decay after an overnight time period 5 PSIG drop allowed Monitor Os gas pressures at the beginning of each procedure to assure sufficient gas remains in the tank to complete the procedure SWITCHABLE CONNECTORS The MXR D has Universal connectors that are easily switched in the field from back to bottom or bottom to back position to suit the installation If the connectors are switched the flowmeter should be completely function tested after installation to the user instructions contained in this manual CAUTION The position of the connectors may be switched by an authorized Porter representative only Unauthorized repair alteration or misuse of this device is likely to adversely affect the performance and will
40. uired for new installations or may be required when a power interruption outage occurs and the flowmeter s switch is in the STANDBY position and the unit is off for 15 minutes or longer and Failsafe message appears 1 Confirm power supply is plugged into the power source and the back of flowmeter 2 Turn On Standby switch to the ON position and wait 20 seconds 3 Then turn On Standby switch to the STANDBY Off position and wait 20 seconds auto zero 4 Turn On Standby switch to the ON position and the unit will display initial sequence startup If display continues to show a Failsafe message flowmeter should be removed for service 15 NITROUS AND OXYGEN FLOW TUBE INDICATORS The Nitrous and Oxygen flow tube indicators are factory calibrated separately and indicate the lowest to highest flow of Oxygen with tube markings at 1 and 10 L min and lowest to highest flow of Nitrous Oxide with a tube marking at 1 L min The glass tubes are secondary indications of flow digital display is primary and the Total Flow is the addition of the two indicated ball float positions in the tubes Each tube has a small Circle Flow Guide which indicates 3 L min of flow when the center of the float is set at the center of the circle and a larger Circle Flow Guide which indicates 6 L min of flow when the center of the float is set at the center of the circle Ball float height flow of the Oxygen tube has 1 1 proportionality to the ball float he
41. ver sedation 5 Over Sedation At gas outlet station the common run of 1 2 inch pipe for Nitrous Oxide is incorrectly allowed to remain at the 1 2 inch size and is then falsely connected to the DISS 1 2 inch outlet station Nitrous Oxide is fed into the Oxygen lines Dental flowmeter valve is set for 10096 Oxygen only but will deliver 10096 Nitrous Oxide because of the crossed lines A patient will become over sedated and may appear to fall asleep when the flowmeter is set for 10096 Oxygen An Oxygen demand valve connected to the resuscitator quick connect of the Flowmeter will also deliver 10096 Nitrous Oxide because of the crossed lines NITROUS OXIDE CONSCIOUS SEDATION SYSTEM ILLUSTRATION NASAL INHALER POWER SUPPLY FRESH GAS o EXHALED GAS REMOTE MOUNT EMERGENCY M NON REBREATHING ALVE p 4 M VACUUM INNER MASK at P COAXIAL T 22mm RIGHT ANGLE ASSEMBLY Ed FLOWMETER ERESH GAS Y ADAPTER LW CONNECTOR VACUUM HOSE CONNECTOR 7 Wn FRESH GAS TO Y CONNECTOR VACUUM HOSE VACUUM TUBE VACUUM TUBE HOLDER HOLDER HOLDE M TO VACUUM SOURCE ADAPTER a DIGITAL_ DISPLAY aH CABINET MOUNT L FLOWME TER O2 DISS MALE N20 DISS MALE HOSE BARB AUTOMATIC VACUUM SWITCH THROUGH WALL ADAPTER ASSEMBLY os INLET 50 PSI FROM TANK ROOM N20 INLET 50 PSI FROM TANK ROOM COPPER PIGTAILS
42. y Place the On Standby switch in the STANDBY Off position Disconnect the corrugated rubber tubing from the Rubber Goods and breathe into the corrugated tubing connected to the bag tee You should not be able to fill the bag with exhalation gas If the bag fills the system s Non Rebreathing Valve is not functioning properly and should be replaced Emergency Air Intake Non Rebreathing Valve Emergency Air Valve Check Monthly Place the On Standby switch in the STANDBY Off position Disconnect the corrugated rubber tubing from the gas scavenging apparatus and draw air with your mouth through the corrugated tubing connected to the bag tee You should be able to draw ambient air through the Emergency Air Valve the gas bag may have to fully collapse first Air going through the valve sounds different than normal gas flow 19 SAFETY FEATURE CHECKS IMPORTANT These are safety features which you should routinely check to assure proper function If any of these safety features are not functioning properly contact your Dental Dealer or Porter Instrument and arrange for the necessary repairs Porter Instrument recommends the repairs be made before reusing the device Low Oxygen Detection The MXR D Flowmeter has a mechanical failsafe feature If there is an Oxygen failure caused by the loss of Oxygen pressure or flow this safety feature will cause the Nitrous Oxide to be mechanically shut off Reflecting this status the dig
43. y Tec e ouo venu ce tar redonne at tt ne tt aa 13 MAINTENANCE AND SERVICE ad th onde 13 CLEANING METHODS Eege 13 DIGITAGDISELAY READOUT EE 14 INITALIZA TON E EEN KUER E 15 NITROUS AND OXYGEN PLOWTUREINDICATORS ui eene eene 16 USAGE DURING POWER OUTAGE ete eege 16 FLOW METER ET EE 17 Three Or Two Liter Reservott Ba an ee Mate toad ip iranien 17 Positive Press re Demand V alye Geet gege rene ou EEN 17 Gasocavenbser Dreaming E EE 17 Automatic Vacuum Switch AVS Option seen 18 In line Vacuum Control Kit ODLUOD uio tei tad MR Re de laide 18 BAG Eege 19 Non Rebreathine Valve Check Monthly seccu iiio enit odo peo ne mate Ree 19 Eimeren y Aur Valve Check Monthy 2e otia habes cepe io ER eee obi haer taa uo ns tue 19 SAFETY PEATURE CHECK S nsc tantae eux Beute ed taut Men eene ge rantes uisus 20 Low OXY SSM Ce COI Sn Rae een ete nine 20 rer edd 20 Nitrous Oxide Failsafe System Check Before Each Use ie eccccccecccsssseeeeeceeeeeeaeessseeeees 21 Power Oxygen Flush Check Monthly Mechanical Check 22 Quick Test to Check Reservoir Bag Rubber Goods for Leaks eeseeeeeeeeesesees 27 MONTHLY CALIBRATION CHECK nas omi ove durae S un rA ue nn te their 23 TECHNICAL Ae Te WR LEE 24 UL CLASSIFICATION RE 24 P rtormance and JXCCUEACY gegen es Egeg dE SEENEN 25 TROUBLESHOOTING CHART FOR MXR FLOWMETERS AAA 26 PARTIAL LISTING OF REFERENCE MATERIAL eeceeee eee eterne nennen nsns a annuae 24
44. ygen Resuscitation Systems are separate devices that are not part of the dental flowmeter When resuscitation device is inserted into the O2 Connect Outlet high flow 10096 Oxygen flows through the connected path By contrast the flowmeter output path will experience a significant reduction in flow the Nitrous Oxide and Oxygen ball floats will drop in the indicator tube and the digital display will read lower total flow or Low O2 Flow Increase O2 Flow Check O2 Source Note the digital display does not reflect the flow in the quick connected path it reflects the reduced flow in the flowmeter Indicator Flow Tubes Indicates flow for Oxygen and Nitrous Oxide in L min with accuracy of 5 at Circle Flow Guides If the power is interrupted to the unit the unit will continue to deliver the same mixture setting during the power outage but the device will not display the digital readouts for the N O and Total Flow The knobs may be adjusted to move the ball float to the desired Circle Flow Guide positions to continue the procedure 25 TROUBLESHOOTING CHART FOR MXR FLOWMETERS SYMPTOM No flow of Os or NoO when ON STANDBY switch is ON and left knob is set at a concentration of N5O or O gt the right knob is rotated to give flow Can get O flow cannot get N5O flow but With N2O concentration set display total flow varies and or both tube flows vary proportionally with no change in setting Meter will flow N O without any
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