Accutron Ultra PC % User manual

1
Ultra PC™ % Flowmeter User Manual

2
INDICATIONS FOR USE
To be used in nitrous oxide-oxygen sedation systems for delivering to a patient
a mixture of nitrous oxide and oxygen gases with a maximum nitrous oxide
concentration of 70%.
CONTRAINDICATIONS
Contraindications for use of nitrous oxide/oxygen inhalation may include:
1. some chronic obstructive pulmonary diseases;
2. severe emotional disturbances or drug-related dependencies;
3. first trimester of pregnancy;
4. treatment with bleomycin sulfate;
5. methylenetetrahydrofolate reductase deficiency.
Whenever possible, appropriate medical specialists should be consulted before
administering analgesic/anxiolytic agents to patients with significant underlying
medical conditions (e.g., severe obstructive pulmonary disease, congestive heart
failure, sickle cell disease, acute oritis media, recent tympanic membrane graft,
acute severe head injury.1)
1American Academy of Pediatric Dentistry. Clinical Guidelines: Guidelines on Use of Nitrous Oxide for
Pediatric Dental Patients. Pediatr Dent 2009;31(6):148-151. Available at:
“http://www.aapd.org/media/policies.asp”. Accessed ebruary 23, 2010.
WARNINGS
To be used only by a professional trained in the use of nitrous oxide.
Patient should always be closely monitored during nitrous oxide use. If patient has
an adverse reaction, reduce or stop the flow of nitrous oxide as needed. The O2
flush button can be used to rapidly purge the lines of N2O. If patient does not show
signs of quick recovery, remove nasal hood and treat with pure oxygen from either
the O2resuscitator fitting or an auxiliary oxygen tank using a demand valve, oxy-
gen assisted manual resuscitator, or equivalent. Call for emergency assistance if
rapid response is not achieved.
Do not use this device for the administration of general anesthesia or as part of, or
in conjunction with, a general anesthesia administration system.
Unit is calibrated at the factory to ±5% per industry recommendations.
Verify that the correct gases are being delivered to the correct ports on the analgesia
gas machine before initial use. This can be done by shutting off the oxygen cylin-
ders in the tank room. Gases should not flow when flowmeters are turned on.

3
CAUTIONS
ederal (U.S.) law restricts this device to sale by or on order of a dentist or physician.
Do not attempt to repair, alter, or calibrate this device. Unauthorized repair, alter-
ation or misuse of this device is likely to adversely affect the performance and will
void the warranty.
Safety features contained in this notice should be routinely checked to assure
proper function. If any of these safety features are not functioning properly, contact
your dealer or Accutron and arrange for the necessary repairs before reusing the
machine.
Always use clean, dry medical gases. Introduction of moisture or other contaminants
into Accutron analgesia gas machines may result in defective operation.

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INDICATIONS D’UTILISATION
Vous ne devez utiliser cette machine que dans des systèmes de sédation oxygène-
oxyde nitreux qui livrent au patient un mélange de gaz d’oxyde nitreux et
d’oxygène ayant une concentration maximale d’oxyde nitreux de 70%.
CONTRE-INDICATIONS
Les contre-indications sur l’inhalation d’oxyde azoteux/oxygène peuvent inclure:
1. certaines maladies respiratoires obstructives chroniques;
2. des troubles émotionnels graves ou des dépendances liées à la toxicomanie;
3. le premier trimestre d’une grossesse;
4. le traitement au sulfate bléomycinique;
5. une déficience en réductase d’acide tétrahydrofoliqueméthylène.
Dans la mesure du possible, consulter un spécialiste médical avant d’administrer
des agents analgésiques/anxiolytiques aux patients qui présentent des troubles
médicaux sous-jacents (par ex.: maladies respiratoires obstructives graves, défail-
lance cardiaque, drépanocytose, otite moyenne aiguë, greffon récent de la mem-
brane du tympan, traumatisme crânien grave aigu.1)
1American Academy of Pediatric Dentistry. Lignes directrices cliniques: Lignes directrices sur l’utilisa-
tion de l’oxyde azoteux pour les patients dentaires pédiatriques. Pediatr Dent 2009;31(6): 148-151.
Disponible sur le site Web: “http://www.aapd.org/media/policies.asp”. Accès le 23 février 2010.
AVERTISSEMENTS
Doit être utilisé uniquement par un professionnel formé dans l’utilisation de
l’oxyde azoteux.
Le patient doit toujours faire l’objet d’une surveillance étroite pendant l’utilisation
de l’acide azoteux. Si le patient présente des effets indésirables, réduire ou arrêter
le débit de l’acide azoteux, selon le besoin. Le bouton de purge O2pour peut être
utilisé pour évacuer rapidement les lignes de N2O. Si le patient n’affiche aucun
signe de récupération rapide, enlever l’enceinte nasale de hood et le traiter avec
de l’oxygène pur, soit à partir du raccord du réanimateur O2ou d’une bouteille
d’oxygène auxiliaire utilisant un détendeur, d’un réanimateur manuel assisté par de
l’oxygène ou l’équivalent. Demander de l’aide d’urgence si une réponse rapide
n’est pas obtenue.
Ne pas utiliser ce dispositif pour l’administration d’une anesthésie générale ou
comme partie ou encore en conjonction avec un système d’administration
d’anesthésie générale.
Unité est calibré à l’usine de ± 5% selon les recommandations de l’industrie.
Vérifiez que les gaz sont correctes livré dans les ports corrects sur la machine de
gaz analgésique avant la première utilisation. Cela peut être fait en fermant les
cylindres d’oxygène dans la chambre du réservoir. Les gaz ne doivant pas cir-
culer lorsque les débimétres sont actirés.

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ATTENTION
Conformément à la loi fédérale des États-Unis, cette machine ne peut être vendue
que par un dentiste ou par un médecin ou sur leur ordonnance.
N’essayez jamais de réparer, de modifier ou de calibrer cet instrument. Toute
réparation, modification non autorisée ou mauvais usage de cet instrument nuira
considérablement à son rendement et annulera la garantie.
Vous devez vérifier couramment les caractéristiques de sécurité de cette brochure
pour assurer un bon fonctionnement. Si l’une des caractéristiques de sécurité ne
fonctionne pas bien, appelez votre revendeur ou Accutron et prenez les mesures
nécessaires pour réparer votre appareil avant de l’utiliser à nouveau.
Utilisez toujours des gaz médicaux propres, secs. Toute introduction d’humidité ou
d’autre contaminant dans un appareil d’analgésie à gaz Accutron provoquera un
mauvais fonctionnement.

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Table of Contents Page
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
I. Upright PC Unit
Basic Mechanics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Central System Mounting Options . . . . . . . . . . . . . . . . . . . . . 9
Portable System Installations . . . . . . . . . . . . . . . . . . . . . . . . . 10
II. Cabinet Mount Unit
Basic Mechanics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Sample Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
III. Newport Portable System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
IV. Safety eatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
V. General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
VI. Directions for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VII. Periodic Equipment Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
VIII. Rubber Goods Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
IX. Emergency Oxygen Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
X. Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
XI. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
XII. Warranty & Returned Goods Policy . . . . . . . . . . . . . . . . . . . . . . . . .26
XIII. Repair Service Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
XIV. Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
XV. Ownership Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
© 2010 Accutron, Inc.
Part No. 25097 - Rev. 05 - 11/2010

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I. PC UPRIGHT UNITS (For Portabl & C ntral Syst ms)
60%
%
-7-
-6-
-5-
-4-
-3-
-2-
-1-
N2O
O
2
Flush
U
L
T
R
A
PC
N O
2
-7-
-8-
-9-
-10-
-6-
-5-
-4-
-3-
-2-
-1-
O2
Off
F
L
O
W
+
-
13"
5"
8"
TECHNICAL SPECIFICATIONS
Physical 5"x 13"x 8"(12, 7 x 33 x 20, 3 cm)
Weight 5.1 lbs (2, 3 kg)
Bottom mount: 1/2 – 20 Thread
Top Mount: 3/4 Diameter Hole
Gas Supply
Oxygen: 50-55 PSI at 100 LPM
N2O: 50-55 PSI at 10 LPM
Gas Fittings
Oxygen Inlet: Male DISS (CGA 124)
N2O Inlet: Male DISS (CGA 1040)
Mixed Gas Outlet: O.D. .875"(2, 2)
Oxygen Resuscitator: 1/4"I.D. Quick Disconnect
Gas Delivery
Oxygen lush: Min 20 LPM
Oxygen low: 1 - 10 LPM (Accuracy, +/- 0.5 LPM)
Oxygen Resuscitator : Min 100 LPM 100% O2
Nitrous Oxide low: 0 - 7 LPM (Accuracy +/- 0.5 LPM)
Nitrous Oxide %: 0-70%*
*50% Max Units Available
Outspout
Total low
Knob
Oxygen
lush
Nitrous Oxide
low Tube
Oxygen
low Tube
%
N2O Knob
Top
Mounting Bracket
(3/4"Ø)
Serial #
Oxygen
Resuscitator
Connection
O2Inlet DISS
N2O Inlet
DISS
Bottom Mount
Threads 1/2 – 20
Room Air Override
Downspout

9
O
2
Flush
O
O2
Resuscitator
-7-
-6-
-5-
-4-
-3-
-1 -
-2-
-9-
-8-
-7-
-8-
-7-
-6-
-5-
-4-
-3-
-2-
-1-
-7-
-6-
-5-
-4-
-3-
-1 -
-2-
F
L
O
W
PC UPRIGHT CENTRAL GAS SYSTEM MOUNTING OPTIONS
obile Stand (Bottom ount)
Under Cabinet Slide (Back ount)
Wall Arm ounts (Back ount)
2 Gas Supply
Lines Connect
To Wall Outlet
Mobile Stand
1/2-20 Threaded Post
Choice of :
O2
Resuscitator
Mounting
Cap
9 " Straight
Telescoping
Bi-fold
Bolt
Wall Arm

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PC UPRIGHT 2-CYLINDER PORTABLE
2-CYLINDER PORTABLE
SYSTE ASSE BLY
1. Mount the flowmeter to the portable manifold:
a. Remove hole cap from the upper hole (use
sharp edge knife or screwdriver) at rear of
manifold and release set screw (use 5/32"
Allen Wrench) enough to remove flowmeter
mount.
b. Remove protective cap from threads of
mount and remove from manifold. Thread
flowmeter mount into hole on the bottom of
flowmeter by hand and tighten firmly using
5/32" Allen Wrench placed in hole on side
of flowmeter mount.
c. Place flowmeter on manifold with mount in
pocket.
d. Tighten set screw firmly from rear while
keeping flowmeter oriented toward front of
manifold.
e. Place hole cap into hole behind the set screw
and push it all way in.
2. Attach the hoses to the flowmeter:
a. Run the nitrous oxide hose under the mani-
fold and attach it to the nitrous oxide DISS
fitting located on the back of the flowmeter.
b. Run the oxygen hose under the manifold
and attach it to the oxygen DISS fitting
located on the back of the flowmeter.
Note: To avoid gas leaks, make certain all hose
attachments are securely tightened.
3. Connect the gas cylinders to the manifold’s
“E” yokes:
a. Connect the nitrous oxide gas cylinders to
the “E” yoke on the N2O side
b. Connect the oxygen gas cylinders to the
“E” yoke on the O2side.
c. It is recommended to use new gasket every
time tank is replaced or removed.
4. (Keep wrench in handy location. It is used to
open and close tanks).
a. Open both gas cylinders and turn off
flowmeter.
b. Check hose connections for leaks using
soap solution.
c. Tighten fittings as needed to stop leaks.
5. Verify flowmeter operations.
Note: See page 23 for attaching rubber goods,
including scavenging circuit.
Flowmeter
ount
(make sure lock
washer is still in
position prior to
installation into
flowmeter)
Manifold
Set Screw
Hole Cap
O2Hose
Stand Post
N2O Hose
E-Yoke
(1 of 2)
Mobile Base
Locking Washer
(remove protective
cap from flowmeter
mount prior to
installation into
flowmeter)
Identify the following
components in the 2-cylinder
portable system package:
• lowmeter
• Portable Manifold (with
DISS Hoses and mobile
stand
attached)
• E Cylinder Wrench (with
chain attached)
14 5/8"
17 1/4"
39 3/8"
O2
Resuscitator
200
400 600
800
1000
200
400 600
800
1000 4000
3000
2000
1000
-7-
-6-
-5-
-4-
-3-
-2-
-1-
N2O
O
2
Flush
U
L
T
R
A
PC
NO
2
-7-
-8-
-9-
-10-
-6-
-5-
-4-
-3-
-2-
-1-
O2
Off
F
L
O
W
+
-

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PC UPRIGHT 4-CYLINDER PORTABLE
4-CYLINDER PORTABLE
SYSTE ASSE BLY
Identity the following components in the
4-cylinder portable system package:
• lowmeter
• Portable Manifold (with DISS hoses
and adjustable mobile stand attached)
• “E” Cylinder Wrench (chain attached)
-7-
-6-
-5-
-4-
-3-
-2-
-1-
N2O
O
2
Flush
U
L
T
R
A
PC
NO
2
-7-
-8-
-9-
-10-
-6-
-5-
-4-
-3-
-2-
-1-
O2
Off
F
L
O
W
+
-
13 3/16" 16 9/16"
20 3/4"
31 5/16"
19"
O2
Resuscitator
1. Mount the flowmeter to the portable manifold:
a) Remove the screw and washer from the top
of the flowmeter mounting post
(located on the manifold).
b) Slip the fixed loop (located at the back of the
flowmeter) over the mounting post.
c) Re-attach the washer and screw to the top of
the mounting post.
2. Attached the hoses to the flowmeter:
a) Run the nitrous oxide hose under the mani-
fold and attach it to the nitrous oxide DISS
fitting located on the back of the flowmeter.
b) Run the oxygen hose under the manifold and
attach it to the oxygen DISS itting located
on the back or the flowmeter.
Note: To avoid gas leaks, make certain all
hose attachments are securely tightened.
3. Connect the gas cylinders to the manifold’s
E-yokes:
a) Connect the nitrous oxide gas cylinders to
the nitrous oxide “E” yokes.
b) Connect the oxygen gas cylinders to the
oxygen “E” yokes.
4. To adjust the portable flowmeter unit’s height:
a) Loosen the black knob on the side of the
manifold.
b) Guide the stand post’s adjustable rod to
desired position.
c) Retighten the black knob.
Note: See page 23 for attaching rubber goods,
including scavenging circuit.
E-Yoke
(1 of 4)
Mobile Base
Flowmeter
Mounting
Post
Portable
Unit’s
Handle
Stand Post
Black Knob
(use to
make height
adjustments)
Regulator
(1 of 2)

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O2ResuscitatorOxygen lush
Mixed Gas Outlet
(3/8 " ) Gas Specific Instant itting
Nitrous Oxide Inlet
(1/4
" ) Gas Specific Instant itting
Mounting
Post With
Wingnut
Serial #
Label
Oxygen Inlet
(5/16
" ) Gas
Specific Instant
itting
% N2O
Knob
N2O
low
Tube
O2
low
Tube
low
Control
Knob
II. PC CABINET MOUNT UNIT (For C ntral Gas Syst ms)
4 5/8"
(12,2cm)
9 3/4" (25cm)
4 1/4"
(11 cm )
1 5/16"
(3,3cm)
2 5/16"
(5,8cm)
4"
(10cm)
6 1/4" (15,9cm) MAX
8 1/2" (21,6cm)
4 1/2"
(11,4cm)
MAX
1/4"
(,64cm)
HOLES 2x
R
1/4" (,64cm) MAX
TECHNICAL SPECIFICATIONS
Physical 5" x 10" x 4" (13 x 25 x 10 cm)
Weight 5.9 lbs (2, 7 kg)
Gas Supply Requirement
Oxygen: 50-55 PSI at 100 LPM
N2O: 50-55 PSI at 10 LPM
Gas Fittings
Oxygen Riser: Male DISS (CGA 1240)
with check valve
N2O Riser: Male DISS (CGA 1040)
with check valve
C Fittings
Oxygen Inlet: 5/16" instant fitting
N2O Inlet: 1/4" instant fitting
Mixed Gas Out: 3/8" instant fitting
Oxygen Resuscitator: 1/4" I.D.
Quick Disconnect
Gas Delivery
Oxygen lush: Min 20 LPM
Oxygen low: 1 - 10 LPM
(Accuracy, +/- 0.5 LPM)
Oxygen Resuscitator: Min 100 LPM
100% O2
Nitrous Oxide low: 0 - 7 LPM
(Accuracy +/- 0.5 LPM)
Nitrous Oxide %: 0-70%*
*50% Max Units Available
Note: Cabinet ount units require remote outlet.

13
SAMPLE INSTALLATION
Remote Outlet Options:
Remote
Outlet
O2& N2O
Check Valve Risers
Ultra PC™ %
lowmeter
30
25
20
15 10
5
0
inHg
VACUUM
a) Standard Bag Tee
(Contains mixed
gas outlet)
b) Remote Flow
System (RFS)
(Contains mixed
gas outlet, and
vacuum controller
with gauge displa )
Note: See page 23 for attaching rubber
goods, including scavenging circuit.

14
Tank
Restraint
Gas
Cylinders
Line
Pressure
Gauges
Removable
Bag Tee
O2Resuscitator
Fitting
Regulators and
E Yokes
Handle
Warning: Do not
hold handle when
opening cabinet.
III. N wport 4-Cylind r Portabl "

15
View
When looking at the front of the Newport cabinet, Nitrous Oxide is on the left as
shown by the blue Nitrous Oxide gauge. Oxygen is on the right as shown by the
oxygen gauge.
Opening Newport Cabinet
Open the Newport cabinet by placing one hand on the front cover and the other in
the handle on the side. Pull handle back all the way.
Install Gas Cylinders
1. Undo Velcro straps
2. Angle tank into position
3. Strap tanks loosely
4. Remove regulators from accessories box
5. Attach regulators to tanks by loosening yoke handle, verifying seal is in
place, aligning seal with gas opening, aligning pins with holes in yoke,
tightening yoke onto cylinder
NOTE: Regulators are pinned to match gas cylinders. Connect gas hoses to
regulator outputs.
NOTE: Hoses and regulators use DISS fittings to prevent mix up. Rotate cylinders
so that regulators fit inside.
Open Gas Cylinders
Pick one tank of each gas to be “in use“ tank and attach “in use” label to cylinder.
Open these cylinders using the cylinder wrench provided in accessory box. Close
Newport cabinet.
Scavenging Circuit
- Install bag tee from accessories box into front of Newport.
- Attach scavenging circuit to bag tee.
- Connect vacuum hose to system vacuum.
- Install nasal hood into scavenging circuit and start vacuum flow per
scavenging instructions.
N wport S tup and Conn ctions

16
N wport: Managing Gas Supply
1. Identify the two in-use tanks (N2O and O2) by attaching “in-use” identification
tags to them.
2. When one of the in-use tanks is empty, close the tank by turning the valve
clockwise. Leave the empty tank in place.
3. Move the “in-use” tag to the appropriate reserve tank, which now becomes
the in-use tank. Replace the empty tank with a new tank, which then becomes
the reserve tank.
4. Open the valve of the new in-use tank by turning counterclockwise.
Note: Do not open the reserve tank until the in-use tank is empty. When
changing gas tanks, make certain both same gas cylinders that are
involved in the exchange are closed. Always remember to switch
the “in- use” tags over to the new tanks.
5. Contact gas supplier to request new gas cylinders as needed.
N wport: Changing Gas Cylind rs
Always use clean, dry medical grade gases. Introduction of moisture or other
contaminants into Accutron Analgesia gas machines may result in defective
operation.
The Newport lowmeter System is designed to operate with a
50-55 psi line pressure on each gas (O2and N2O). The line pressure can be
determined by reading the O2and the N2O line pressure gauges that are located
on the front panel of the Newport.
The Newport has features incorporated to make cylinder change-out easy. To assure
proper operation of the system, 4 cylinders must be properly installed at
all times. Please review the following cylinder replacement procedures before at-
tempting to change cylinders.
1. Open the tank enclosure by sliding the cover to the rear.
2. Close the valve on the empty tank (clockwise).
3. Release the Velcro restraint on the empty tank.
4. Tilt the empty tank out slightly.
5. Loosen the round handle on the regulator yoke.
6. Remove the regulator from the empty tank (make certain that the regulator is
not dropped or damaged while it is off the tank).
7. Lay the empty cylinder down on the floor (cylinders should only stand
upright when properly restrained as they can easily fall over).
8. Pick up the full replacement tank and place the bottom of the tank onto the
floor of the Newport, leaving it slightly tilted outward for easy replacement of
the regulator.
9. Check to assure that the sealing gasket has remained on the regulator’s E yoke.
10. Reattach the regulator to the new full tank by sliding the yoke (attached to
the regulator) over the top of the tank post aligning the index pins with the
corresponding holes in the tank post.
11. Tighten the round handle on the regulator yoke.
12. Push the tank into an upright position. Attach and tighten the Velcro
tank restraint.

17
Flowmeter
is behind
shield at
front of unit.
Serial #
Label
N wport: Acc ssing S rial Numb r

18
IV. SAFETY FEATURES
O2 ail Safe System – Offers assurance that N2O ceases if the O2supply is inter-
rupted or reduced.
Emergency Air Valve – Automatically provides patient with ambient air if gas flow
is interrupted. Located on remote bag tee.
Directional Check Valve – Prevents re-breathing of exhaled gases and protects
against CO2buildup. Located on remote bag tee.
O2 Resuscitator Connection – Direct connection to O2for use with resuscitator. Port
is always open and provides 100 LPM minimum of pure oxygen.
V. GENERAL INSTRUCTIONS
1. Warranty
Unpack flowmeter and inspect to make certain that the unit has not been damaged
during shipment.
The unit’s serial number is located on the back of the flowmeter (see page 17 for
Newport's serial number location). Record the serial number in the area provided
at the back of this booklet. Note: After Cabinet Mount model is mounted into a cab-
inet, the serial number will no longer be visible. Always reference the serial number
when corresponding with Accutron.
Complete the warranty card supplied with flowmeter Ultra and mail to Accutron.
Completion of this step ensures proper device warranty coverage. Accutron
analgesia machines carry a two-year limited warranty (see Warranty on page 25
for details).
2. Gas Supply Conn ction
Always use clean, dry medical gases. Introduction of moisture or other contami-
nants into Accutron analgesia gas machines may result in defective operation.
After device installation, connect the oxygen and nitrous oxide supply lines to the
Diameter Specific Instant fittings or DISS fittings located on the back of the device.
See pages 15 and 16 for information specific to the Newport. It is important that the
regulators for both gases be set to give pressures in the range of 50-55 PSI.
Verify that the correct gases are being delivered to the correct ports on device before
initial use. This can be done closing O2gas cylinders, opening N2O gas cylinders,
and attempting to use flowmeter. Turn Total low Knob all the way open and
% N2O Knob all the way to 70%. There should be no gas flow. If either gas tube
shows flow, gas lines may be crossed internally. Turn off unit and call Accutron
before use.

19
3. CLEANING AND DISINFECTING THE FLOWMETER
Cleaning:
Clean flowmeter by wiping with moistened towel or spraying with disinfectant and
wiping surface. If the disinfectant does not contain a cleaning agent, use a mild
cleaner for this step.
Disinfecting:
Any of the following commercially available disinfectants can be used for
disinfecting the flowmeter surface:
Commercial Brand Name EPA Registration No. EPA Establishment No.
Lysol Brand II I.C. 777-72-675 777-NJ-2
Disinfectant Spray
EcoTru (Spray) 70791-1 034490-CA-001
CaviCide 46781-6 46781-MI-1
Microstat 2 Tablets 70369-1 69781-MN-01
Note: Reference the disinfectant's label instructions for appropriate
application procedures and inactivation of specific organisms. Care
should be taken not to let disinfectant seep into flowmeter’s sealed areas.
Barriers:
Barriers that are impervious to fluids are an acceptable alternative to chemical
disinfection of environmental surfaces. In some cases, barriers may be the best
way to prevent cross-contamination of equipment surfaces that are difficult to
clean or that may be harmed by disinfectants. Choose barriers that are large
enough to cover the area of concern, impervious to fluids such as blood and
saliva, and do not impede the use of the device or equipment they cover.
Change barriers between each patient.

20
VI. DIRECTIONS FOR USE
Read instructions completely before operating flowmeter device.
Note: The steps listed below provide a basic functional description of
the flowmeter usage. A training course that emphasizes a practical,
hands-on approach combined with instructions on safe techniques for
administration of nitrous oxide-oxygen conscious sedation is recom-
mended before use of this flowmeter.
Reference flowmeter diagrams on pages 8 or 12 to locate control knobs for appropriate
flowmeter model.
1. Turn on unit and open valves on top of both the N2O and O2 “in-use” tanks.
2. Using low Knob, set oxygen flow rate to desired delivery level.
Note: When the
N2O is set at 0 and the Total Flow Knob is turned to the
on position, the
N2O ball might move rapidly from the bottom of the
N2O flow tube and then immediately return to its resting place at the
bottom of the flow tube. This is a normal occurrence and not an indica-
tion of malfunction.
3. Set %
N2O Knob to desired percent level.
4. Adjust the total flow rate to the patient by turning the low Knob as follows:
Turn the low Knob in a counter-clockwise direction to increase flow rate and in a
clockwise direction to decrease flow rate. Total flow rate is the sum of the
N2O flow
rate and the
O2 flow rate (Total flow rate = N2O flow rate + O2 flow rate).
The numbers shown on the N2O Knob represent “% N2O of Total low.” These
numbers are a guide to assist the doctor in adjusting the
N2O flows. Accutron rec-
ommends the doctor always use
O2 and N2O flow rates indicated in the flow tubes
to calculate the
N2O and O2 percentages. % N2O of Total low is calculated using the
following formula:
%
N2O = N2O low Rate x 100 (See chart for calculating
N2O low Rate + O2 low rate % N2O on p. 21)
5. When the procedure is nearing completion and the patient is placed on
O2 only,
make the following adjustments:
Turn the %
N2O Knob to zero and turn the low Knob in a counter-clockwise
direction to increase
O2 flow.
6. When the procedure is complete, turn the low Knob fully in a clockwise
direction and make certain the unit is off.
7. At the end of each day turn off gas supply at the tanks. or 2-cylinder and 4-
cylinder models, close
N2O cylinders and run N2O through flowmeter until
trapped gas is gone and gauge reads empty. Turn off
O2 cylinders and run O2
gas until O2 gauge reads empty.