Parker Matrx Digital MDM User manual

REF. 10049600 Rev. M
Parker Hannifin Corporation
Porter Instrument Division
245 Township Line Road
Hatfield, PA 19440 USA

1
TABLE OF CONTENTS
WARNINGS 2
DESCRIPTION AND MECHANICAL ASSEMBLY 2
CONNECTION AND ACTIVATION OF GAS SUPPLY TO MACHINE 9
ASSEMBLY OF “E” SIZE CYLINDERS TO PORTABLE UNITS 11
WITH CYLINDER MOUNTS
SPECIFICATIONS 14
PRE-OPERATION 19
CROSS PIPELINE TEST 21
FUNCTIONAL TESTS 23
OPERATION 24
MAINTENANCE 26
SERVICE 26
CE NOTICE 26

2
WARNINGS
The MDMand its accessories are designed to perform in accordance with specifications herein when
installed, operated and maintained as instructed in this manual. It should be carefully read and understood
prior to operation and use of the MDM.
This equipment is designed for use with an oxygen supply assuring 100% oxygen concentration. The use
of oxygen concentrators could result in an unsafe condition to the patient.
The MDM and its accessories are FACTORY adjusted and calibrated. Any alteration to these
adjustments may alter the accuracy and operation specified by the factory.
The MDM and its accessories in need of repair should be repaired ONLY by an Authorized by
MATRX/PARKER Dealer.
Replacement parts used to restore a MDM to its specified operation should be genuine MATRX/PARKER
manufactured parts or MATRX/PARKER recommended equivalent parts.
The MDM and its accessories are a specialized medical device and should be operated ONLY by a
professional trained in its use.
MATRX/PARKER may apply technical advances whenever it is desirable. Therefore, specifications of
this product are subject to change WITHOUT NOTICE. MATRX/PARKER should be contacted for current
information.
We cannot over stress the importance of the user performing their own test independent of the dealer or
contractor to verify that ALL gas pipelines are connected correctly. Properly connected pipelines are
essential to PATIENT SAFETY. Please refer to Page 33 of this manual for a simple test procedure. This
test procedure is NOT intended to replace any other test procedures required by NFPA 99c or local
building codes. It is intended for the user as an additional safety measure.
DESCRIPTION AND MECHANICAL ASSEMBLY
This manual covers the installation and operation of the MDM Nitrous Oxide/Oxygen mixer and it’s
mounting configurations including wall mounted, under counter mounted, and mobile stand mounted with
and without 2 or 4 cylinder gas yoke assembly. The MDM is a mechanical mixer for regulating the flow of
nitrous oxide and oxygen from a gas supply to a conscious patient for the purpose of conscious sedation
analgesia.
With the exception of the mounting configuration which will be covered later, each MDM model includes
the MDM Flowmeter Head with one of the following:
Conventional Rubber Goods or N2O - O2Scavenger
40” Breathing Tube Large scavenger
Large Nasal Inhaler 3 Liter breathing bag
3 Liter Breathing bag

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MDM AS SUPPLIED WITH CONVENTIONAL RUBBER GOODS
The following assembly procedure is common for all MDM models supplied with conventional rubber
goods (see fig 1):
1. Position breathing bag as shown and slide opening in breathing bag over outside diameter of bag
mount.
2. Slide one end of 40” breathing tube over outside diameter of breathing tube connector.
3. Slide connector “Y” fitting of large nasal inhaler into free end of 40” breathing tube.

4
MDM AS SUPPLIED WITH NITROUS OXIDE - OXYGEN SCAVENGER
The following assembly procedure is common for all MDM models supplied with the dental scavenger
(see fig 2):
1. Position breathing bag as shown and slide opening in breathing bag over outside diameter of bag
mount.
2. Insert fresh gas connector into breathing tube connector.
3. Refer to scavenging nasal inhaler instructions for methods of connecting vacuum shut-off valve.

5
The following mounting adaptations, method of assembly, and installation are for all MATRX Analgesia
Heads.
For Top Mounting Wall Mounted Units (see fig 3)
1. Remove the two 10-32 x ¼” screws from the rear, top of the head, and assemble the mounting
bracket to the rear top of the analgesia head by aligning the bracket with the bevel side to the
head and the 10-32 tapped holes in the head with the screw holes in the bracket.
2. Screw the two 10-32 x 1” screws (included) into the tapped holes through the clearance holes in
the bracket. Thread in screws until they are tight.
Mounting the 8" Wall Mount

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A. Wood Stud Mounting
Note: Mounting hardware is not supplied with the mount.
Using a minimum wood screw size of #12 x 2 ½” long and flat washer #12 x 5/8” minimum outside
diameter, mount the wall bracket directly to a wood wall stud through a maximum 5/8” dry-wall. Two
screws are required for each mounting (see fig 4).
B. Concrete Wall Mounting
Note: Mounting hardware is not supplied with the mount.
1. Drill hole in concrete wall as instructed by anchor manufacturer. Drive in anchor. Insert screw
through washer then wall bracket. Thread screw into anchor until tight. One screw required for
each mounting hole (see fig 5).
2. Refer to Figure 3. Slide stud on mounting bracket (attached to analgesia head) in bore located in
the end of the 8” arm.
3. Attach rubber goods as per Figure 1 and 2.
THE MOBILE STAND UNIT

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A. Thread hex nut onto mounting stud until at least ¾” of thread is exposed above nut on stud. (See
fig 11).
B. Thread stud into 5/8 - 18 tapped hole located on bottom of the outlet housing of the analgesia
head. Thread in until nut is reached. (See fig 11).
C. Using an adjustable wrench or the appropriate box wrench, firmly rotate the nut clockwise
(looking towards the bottom of the head) firmly until it stops against the MDM.
D. Slide the tapered nose of the pole mount assembly into the bore of spider stand until it comes to
a stop. (See fig 12).
E. Slide mounting stud through post spacer (if supplied) and into stud bore of pole mounting stud.
When the head is at the desired working height, rotate the stud lock clockwise until it locks the
stud. (See fig 12).
F. Connect rubber goods as per figures 1 and 2.
THE MOBILE STAND UNIT (cont.)

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CONNECTION AND ACTIVATION OF GAS SUPPLY TO MACHINE

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Hoses are not supplied as standard equipment with analgesia heads, except for portable units, and
must be ordered separately, specifying hose length.
Gas connections to the Matrx analgesia heads are accomplished by using color-coded and
mechanically indexed hose assemblies.
CAUTION
1. Only oxygen hoses can be used for oxygen connections.
2. Only nitrous oxide hoses can be used for nitrous oxide connections.
A. HOSE IDENTIFICATION
Oxygen Hose Standard Assembly
Nitrous Oxide Hose Standard Assembly
CONNECTION AND ACTIVATION OF GAS SUPPLY TO MACHINE (cont.)
B. HOSE CONNECTION TO THE ANALGESIA HEAD

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1. Connect DISS female hexagon fitting (see fig 18) of the nitrous oxide hose to male DISS fitting on
the back of the analgesia head (see fig 19). Accomplish this connection by screwing female
hexagon fitting onto male threaded fitting. Tighten to hand tight and then finish tighten with 7/8
open end wrench just enough to prevent leaks. Do not over tighten.
2. In the same fashion, connect the oxygen hose to the male oxygen fitting (see fig 19). Finish
tightening the female hexagon fitting with an 11/16 open end wrench just enough to prevent leaks.
Do not over tighten.
ASSEMBLY OF “E” SIZE CYLINDERS TO PORTABLE UNITS WITH CYLINDER MOUNTS
A. CYLINDER IDENTIFICATION AND PIN INDEX SYSTEM

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Nitrous Oxide cylinders are blue.
Oxygen cylinders are green.
Pin index system is a method of pins accurately located on the face of the cylinder yoke and holes
accurately located on the cylinder shut-off valve, such that only cylinders of a specific gas will fit the
cylinder yoke for that specific gas. See Figures 23 and 24.
Assembly of “E” Size Cylinders to Portable Units with Cylinder Mounts (cont.)
B. CYLINDER MOUNTING (see fig 25)

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NOTE
This cylinder mounting procedure will be typical for either nitrous oxide or oxygen cylinders.
CAUTION
Do not attempt to assemble nitrous oxide cylinder to oxygen yoke or oxygen cylinder to
nitrous oxide yoke.
Do not remove pins from yoke assembly.
Use “E” or “D” size cylinders only.
1. Rotate the tee handle screw clamp in a counter-clockwise direction until the point of the screw is
flush with the inside edge of the yoke bar.
2. Remove the cylinder seal from the captive strap on the cylinder. Dispose of the captive strap.
3. Place the cylinder seal on the cylinder seat such that gas nipple goes through the hole in the
center of the cylinder seal. See Figure 23.
4. Locate the “E” cylinder directly underneath the cylinder with the cylinder shut-off valve located
towards the cylinder yoke and such that the face of the cylinder valve will face the face of the
yoke. See Figure 23 and 24.
5. Lift the cylinder shut-off valve through the yoke block and align the yoke pins with the pin holes
and the gas nipple with the cylinder port.
6. Move the cylinder towards the face of the yoke so that the pins and gas nipple engage with the pin
holes and cylinder port.
7. Rotate the Tee handle screw clamp clockwise until the point on the screw engages the
countersink on cylinder shut-off valve post.
8. Hand tighten (do not use tools) the tee handle screw clamp until it is very tight.
Assembly of “E” Size Cylinders to Portable Units with Cylinder Mounts (cont.)
B. CYLINDER MOUNTING (cont.)

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NOTE
Close the valve stem when the cylinder is not in use.
This completes the assembly of the analgesia unit.
SPECIFICATIONS
A. Standard MDM Flowmeter Heads (See fig 26)

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Physical Size: 5” wide x 9 ¾” high x 12 ¼” deep
Weight: 7 lb.
Fresh Gas Outlet Size: 15mm ID x 22 mm OD
Nitrous Oxide Inlet: Male DISS
Oxygen Inlet: Male DISS
Maximum Oxygen Flow Rate: 10 LPM @ 50-55 PSIG Inlet and 50% setting of mixture dial
Maximum Nitrous Oxide Flow Rate: 10 LPM @ 50-55 PSIG Inlet and 50% setting of mixture dial
Minimum Nitrous Oxide Concentration 0%
Maximum Nitrous Oxide Concentration 70%
Optional Maximum N2O Concentration 50%
Oxygen and Nitrous Oxide Flow Tube
Accuracy (Full Scale) ½ L
Inlet Oxygen Pressure Maximum 50-55 PSIG
Inlet Nitrous Oxide Pressure Maximum 50-55 PSIG
Mixture Dial Calibrations: With supply pressure at 50 to 55 PSIG and total flow of 10 LPM, oxygen
and nitrous oxide flow rates within ½ LPM of mixture dial calibration. (As indicated on individual
flowtubes.)
Total Flow Range 2 to 20 LPM at 50 to 55 PSIG supply pressure and dial mixture set at 50 % (As
indicated on individual flowtubes.)
Total Flow Variation with supply pressure at 50 to 55 PSIG and total flow of 10 LPM, total flow
variation within ½ LPM of total flow throughout mixture dial range. (As indicated on individual
flowtubes.)
B. MDM Portable Stand Mounted Unit (see fig 27)
Maximum Height: 53 inches
Minimum Height: 40 inches
Floor Area: 22 ½ “ sq. Maximum
C. MDM Wall Mounted (see fig 28)
Maximum Distance from Wall: 26 inches, approximately
Minimum Distance from Wall: 5 inches, approximately
Maximum Working Width: 48 ¾ inches, approximately
Maximum Working Height: 22 inches, approximately
D. MDM Cabinet Mounted (see fig 29)
Minimum Cabinet Opening: 6 inches
Minimum Swing Radius: 17 inches
NOTE: All specifications subject to manufacturing tolerance.
MDM SPECIFICATION DIAGRAMS
A. STANDARD MDM FLOWMETER HEADS

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Estimated Weight: 7 Pounds
MDM SPECIFICATION DIAGRAMS (cont.)
B. MDM PORTABLE STAND MOUNTED UNIT

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MDM SPECIFICATION DIAGRAMS (cont.)
C. MDM WALL MOUNTED

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Figure 28
MDM SPECIFICATION DIAGRAMS (cont.)
D. MDM UNDER COUNTER MOUNTED

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PRE-OPERATION
A. Rotate flow control valve fully counter-clockwise (See fig 30). Rotate mixture dial to 100%
position.