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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

2

O during administration of N

2

O / O

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

2

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 CONNECTORS 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. Do not use the 

unit with an extension cord as it will be subject to electromagnetic interference (EMI).

 

WARNING:  

During any extended power outage, remember to turn the On / Standby (Off) 

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. 

CAUTION

:

 When installing or if switching gas fittings is required, be sure to 

use two wrenches when 

tightening or removing hoses from the gas fittings.

  Instructions for switching gas fittings are detailed 

on page 10, Section 3. 

 

6

Summary of Contents for 4065D

Page 1: ...DIGITAL MXR D Cabinet Mount Flowmeter Component Diagram and Installation Instructions MODEL 4065D FM 1062 Rev B 6 07...

Page 2: ...CSA C22 2 No 601 1 M90 Symbol Description Protective Earth Ground Class I Device Alternating Current Earth Ground Attention consult the accompanying documents Type B Equipment Distribution of Porter M...

Page 3: ...s 9 NFPA Codes 9 INTENDED USE Flowmeter for Analgesia Delivery System 9 INSTALL THE GAS LINES 10 SWITCHING THE UNIVERSAL CONNECTORS 10 CABINET WALL MOUNT INSTALLATION 11 FLOWMETER ACCESSORIES 13 CHECK...

Page 4: ...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 TANK REGULATOR SPECIFICA...

Page 5: ...anual the safety protection provided by the equipment might be impaired The Porter Digital MXR D is designed to be used in normal environmental conditions 1 Indoor use 2 Altitude up to 8000 feet 2 438...

Page 6: ...904 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 documentati...

Page 7: ...nd 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 tan...

Page 8: ...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 At gas outlet station the c...

Page 9: ...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 thorough...

Page 10: ...ter The dental dealer is responsible for the final connections to the flowmeter the details of flowmeter installation checking for crossed lines leak testing of connections to the flowmeter and basic...

Page 11: ...ce a piece of tape over the rear power supply connector temporarily so dry wall dust does not enter the connector Wrenches required 7 8 for N2O connector 5 8 for O2 connector and 7 16 for mixed gas co...

Page 12: ...e O2 shut off valve and the N2O DISS hose blue to the N2O shut off valve 9 Run 20 feet mixed gas hose from flowmeter mixed gas outlet hose barb to hose barb of Remote Surface Mount or Through Wall Ada...

Page 13: ...ff position Confirm that the DISS Shut Off Valves are in the open position Pressurize the sedation gas supply lines with 50 PSI Observe any pressure decay after an overnight time period 5 PSI drop all...

Page 14: ...POWER SUPPLY SYSTEM ILLUSTRATION 14...

Page 15: ...GAS DISTRIBUTION SYSTEM ILLUSTRATION 15...

Page 16: ...w Knobs to full mechanical stops Installation Check for proper display STEP 1 N2O L M There is no Oxygen flowing There is no Nitrous flowing N2O and Total Flow valves are shut tightly Normal display c...

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