Midmark Matrx VMS, VMS Plus, VMC Quick Reference Manual

VA113301

Quick Reference Guide

Matrx VMS®,, VMS® Plus,

and VMC™ Anesthesia Machines

Model Number:

Serial Number:

Dealer Information:

Purchase Date:

10578000 Rev DA1 3/20/18

This guide outlines basic operation and
maintenance of the Anesthesia Machine.
Additional information is available on
www.Midmark.com. If service is
required, contact your authorized Midmark
dealer.

Maintenance Kits

Calling for Service
If service is required, contact your Midmark dealer.
To contact Midmark directly:
8:00am until 5:00 PM Monday through Friday (EST)
Customer Service
1-800-Midmark (1-800-643-6275), Fax [phone]
Technical Service
1-888-279-1260, Fax [phone]

Registration
To register your product warranty, go to www.midmark.com

Leak Test Procedure

To perform leak test...

A) Close APL (Scavenging /Adjustable Pressure Limiting) valve by turning knob clockwise.
B) Place thumb over patient connection of breathing circuit Y.
C) Remove breathing bag and cover bag port opening. (Use palm of hand that is covering Y.)
D) With oxygen (50-55 PSI [3.4-3.8 Bar]) supplied to anesthesia machine, slowly open
flowmeter to register 30cm H20 on anesthesia machine pressure gauge.
E) Turn off flowmeter when pressure reaches 30cm H2O. (If pressure holds steady the system
is leak free but if pressure drops, proceed to step (F).)
F) Slowly open flowmeter until pressure stabilizes at 30cm. H2O setting. (This determines the
magnitude of the leak. If leak rate is greater than 300ml/min; proceed to step (G).)
G) Refer to page 2, “What if machine leaks?
H) Replace reservoir bag. Repeat step (B) and steps (D) through (F). This will determine the
integrity of breathing bag.

Flowmeter

APL Valve

(Scavenging /Adjustable

Pressure Limiting)

Pressure Gauge

VA113401

VMS® , VMS® Plus
and VMC™
Order #: 91303015

Includes:

 •Disc(2)

 •LargeO-ring(2)

 •SmallO-ring(3)

 •Dome(2)

 •Tubing

 •BreathingCircuit(1)

 •UpperandLowerGaskets

 •Diaphragm(VMS® only)

 • Back Up Ring (VMS® only)

Equipment Alert

Do not activate the oxygen ush

during any part of this leak test.

1

Occlusion Valve

(VMS

®

only)

Sodasorb

®

Order #: 002-1761-00

Sodasorb® LF, Canister Pak, Case

Order #: 002-1762-00

Sodasorb® Standard, Canister Pak, Case

Order #: 002-1763-00

Sodasorb® LF, Pre-pak, Case

Order #: 002-1764-00

Sodasorb® Standard, Pre-pak, Case

Order #: 002-1765-00

Sodasorb® Standard, Bucket

© 2008 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |

Caution

Federal law restricts this device to sale
by or on the order of a licensed
veterinarian.

VA113501

Equipment Alert

Never invert or tilt the vaporizer when
it contains anesthetic liquid. Never overtighten the
flowmeter needle valves, damage to the needle and

seat will eventually result.

CAUTION

Insure gas supplies are adequate and turned on. Verify vaporizer is filled to eliminate the possibility of anesthetic depletion during surgery.

To Operate Anesthesia Machine...

A) Lift CO2 absorber canister lock levers. Slide clear canister free of absorber assembly. Fill canister with absorbent material, following directions on canister
label. Be sure canister and gasket mating surfaces are completely free of absorbent. Replace canister in absorber assembly. Simultaneously, close both
lock levers to secure canister.
B) Connect breathing bag and breathing circuit.
C) Connect a 50-55 PSI (3.4-3.8 Bar) oxygen supply line to the oxygen supply fitting on the back of the flowmeter.
D) Adjust flowmeter and vaporizer settings to meet physiologic needs of the patient.
E) During anesthesia, monitor the pressure gauge, inhalation and exhalation valves, and the breathing bag. Make necessary corrections in flow rate,

vaporizer setting, and Scavenging/Adjustable Pressure Limiting (APL) valve, to insure adequate depth of anesthesia and adequate ventilation of the patient.

Note: For guidelines on induction and anesthesia techniques, or particular species physiologic requirements, etc., please refer to a veterinary anesthesia textbook.

Maintenance Schedule

Flowmeter

Breathing Circuit

Flowmeter Adjustment Knob

Oxygen Supply Fitting

Inhalation Valve

Pressure Gauge
(Manometer)

Breathing Bag

Safety Valve
(Negative Pressure Relief)

Oxygen Flush

Fresh Gas
Connection

Absorber
Canister

Vaporizer
(Not Included)

Before Every Surgery

A. Inspect.

Check machine connections and rubber parts for
looseness, damage or wear. Replace as necessary.

B. Perform leak test.

What if Machine Leaks?

1) Breathing Bag - If leak occurs, replace.

2) Breathing Circuit - Install new breathing

circuit or obstruct inhalation / exhalation
openings to determine if leak originates from
breathing circuit.

3) Vaporizer Fittings - Verifyfittingsandtubing

are securely attached.

4) Canister Gaskets - Check for loose
absorbent grains between canister housing
gaskets.

5) Verify Canister is seated properly.

6) Safety Valves - Remove valve and obstruct

opening to determine if leak originates from
negative pressure relief valve. Check the o-ring
under valve for damage.

7) APL Valve - Remove valve and obstruct
opening to determine if leak originates from APL
valve. Check the o-ring under valve for damage.

8) Occlusion Valve - Remove valve and
obstruct opening to determine if leak originates
from the occlusion valve. Check the o-ring, dia­phragm & back-up ring on valve for damage.

9) O-Rings under chrome retaining rings. Check
the o-rings for damage.

Daily

Weekly

Annually

A. Clean.

Remove breathing bag and breathing circuit. Wash
with warm water and mild soap, rinse well. Hang to
dry. Remove white disks from inhalation and
exhalation valves. Wipe with soft cloth, wipe out
valves and reassemble. Remove absorber canister,
wipe off gaskets, canister and absorber housings.

A. Service Vaporizer.

Service and calibrate vaporizer. Contact Dealer for
details.

A. Change Absorbent Material.

Follow manufacturer’s recommendations for proper
use of CO2 absorbents.

Every Two (2) Years

A. Replace Maintenance Components.

Replace components found in maintenance kit

91303015.

Patient Weight Bag Size

15 lbs or less (7kg) 500 ml
15-30 lbs (7-14 kg) 1 liter

30-60 lbs (14-27 kg) 2 liter

60-100 lbs (27-45 kg) 3 liter

100 + lbs (45 + kg) 5 liter

BREATHING BAG

Lock Levers (Typical)

APL Valve

(Scavenging /Adjustable

Pressure Limiting)

2

Exhalation Valve

Occlusion Valve

(VMS

TM

only)

© 2008 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |