USER’S MANUAL / INSTRUCTIONS
NITRONOX
10115900 Rev. N 04/2018 www.porterinstrument.com/nitronox
Manufacturer:
Parker Hannifin Corporation
Precision Fluidics Division
Porter Instrument
245 Township Line Road
Hatfield, PA 19440 USA
Office 215 723 4000
Fax 215 723 5106
This product complies with the Medical Device Directive (93 / 42 / EEC). A “Declaration of Conformity” in
accordance with the directive has been made and is on file.
European Communities should contact the Authorized Representative listed below regarding any Medical
The Quality System for Porter Instrument is certified to ISO 13485. The scope of our registration is:
“The design, manufacture, distribution and servicing of Nitrous Oxide – Oxygen Sedation Flowmeters, Gas
Scavenging Systems, Gas Distribution Systems and Office Communication Systems for use by a physician,
dentist or licensed healthcare Professional.”
Check our website: www.porterinstrument.com for additional information.
To register your product: www.porterinstrument.com/resources-dental choose Warranty tab.
To download a User’s Manual: www.porterinstrument.com/resources-dental choose Manuals tab
Device Directive (MDD) inquiries.
Contact Name: Parker Hannifin Ltd Instrumentation Products Division
Mailing Address: Riverside Road, Pottington Business Park
Barnstaple, EX 31 1NP, England
Phone: +44 (0) 1271-313131 Fax: +44 (0) 1271-373636
Nitronox® Inhalation Analgesia System - Serial Number:
Table of Contents
Examination ............................................................................................................. 1
Warnings and Precautions ....................................................................................... 2
New or Modified Installations ................................................................................... 3
Side Effects / Contraindications ............................................................................... 4
Development of Nitronox Delivery Protocols ........................................................... 5
Self-Administration vs. Assist to Self-Administration ............................................... 6
Demand Valve Instructions ...................................................................................... 7
Installations: Preparation of Mobile E-Stand ............................................................ 9
Installations: Preparation of Nitronox Scavenger Parts ........................................... 11
Installations: Attachment of Cylinders ...................................................................... 12
Description ............................................................................................................... 13
Functional Schematic .............................................................................................. 14
Specifications / Functional Features ........................................................................ 15
Functional Warnings and Cautions .......................................................................... 15
Functional Tests ...................................................................................................... 15
Operation / Maintenance ......................................................................................... 16
Troubleshooting ....................................................................................................... 20
Warranty .................................................................................................................. 21
Examination
Examine shipping carton for signs of external damage.
Remove contents from carton and inspect for visible damage or missing parts.
If damage is discovered or suspected and/or parts are missing, notify Porter or authorized
distributor immediately.
1
IMPORTANT:
READ MANUAL COMPLETELY BEF OR E OP ER ATI NG T HI S DE VI CE
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.
WARNINGS AND PRECAUTIONS
These warnings and precautions are to help
you to understand how to safely operate the
Nitronox device. A WARNING alerts you to a
possible hazard to people. A CAUTION alerts
you to the possibility of equipment damage.
WARNING: New or modified installations properly connected gas pipelines are
absolutely essential to patient safety. The
ultimate responsibility of assuring that lines
are not crossed rests with the user. See
next page for details.
WARNING: Porter equipment utilizes the
cross+protection system. The flexible hose
and connectors that connect to the housing are
diameter indexed; 3/8” O.D. for Nitrous Oxide
and ½” O.D. for Oxygen. The
cross+protection system is designed to
prevent misconnection of Oxygen and Nitrous
Oxide hoses. DO NOT ATTEMPT TO
CHANGE THE DIAMETERS OR
CONNECTORS OF THE DEVICE! Tampering
with the cross+protection system constitutes
acceptance of liability by the installer.
WARNING: Nitronox® Inhalation Analgesia
systems are intended to be used by medical
personnel trained in its use and the use of
nitrous oxide and oxygen for medical
applications.
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: Use Scavenging
Monitor for N2O in the patient treatment area
to insure that controls are effective in achieving
low levels of ppm (parts per million) exposure.
Contact Porter or Authorized Distributor for
details on monitors and testing.
Inspect and maintain the analgesia delivery
system to prevent N2O leaks in all hoses,
connections and fittings. Have all leaks
repaired immediately.
WARNING: Medical workers are exposed to
O during administration of N2O/O2 conscious
N
2
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
2
concentrations in patient procedures. Your
accessory Porter Nitronox Scavenger System
is an important part of the system of controls in
medical settings.
WARNING: When using a single use
full face mask, not supplied sterile.
Dispose of mask after use to prevent
patient cross-contamination. When
using multiple use mask, follow
manufacturer’s sterilization
instructions.
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).
2
NEW OR MODIFIED INSTALLATIONS
WARNING:
ALWAYS ASSURE THAT LINES ARE NOT CROSSED!
WARNING: New or modified central supply installations - properly connected gas pipelines are
absolutely essential to patient safety. The authorized distributor 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 authorized distributor 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 Nitronox and/or central
gas supply manifold systems. Crossed lines will create a dangerous and hazardous condition
where, under a loss of oxygen supply, 100% nitrous oxide will be delivered through the oxygen
delivery path and subsequently to the patient.
Maintain patient observation during procedures. Prevent over sedation. If a patient becomes over
sedated when being delivered 100% oxygen [during an apparent loss of nitrous oxide supply], it is a
definite indication of crossed lines. If crossed lines are suspected, remove the 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.
INPUT PRESSURE DIFFERENCES
WARNING: Oxygen input pressure more than 15 psi (1 bar) higher than Nitrous Oxide input
pressure will cause low oxygen percentage mixture delivery. DO NOT use Nitronox if O2 input
exceeds N2O input by 15 psi or higher.
3
SIDE EFFECTS & CONTRAINDICATIONS
Note: This is not an exhaustive list. The list was prepared from published articles.
Possible Side Effects of Nitrous Oxide – Oxygen Conscious Sedation: May experience
nausea, vomiting, excessive sweating, euphoria, excitement, deep sedation, drowsiness, sleep,
dizziness, lightheadedness, dysphoria, amnesia, and headaches.
Precautions and Contraindications for Nitrous Oxide Use
Precautions/Relative Contraindications
Discontinue the Nitrous Oxide delivery if observed: prolonged inspirations,
irregular breathing, involuntary eye movements, swallowing or gagging, dilated
pupils and rigid muscles.”
Side effects (e.g., nausea, vomiting, dizziness, dysphoria, etc.) are not tolerable
Current vitamin B
deficiency
12
Bronchoconstrictive disease (asthma) – (at determination of medical professional)
The use with pediatric patients, especially age 1 to 4 years, requires caution and
specific protocols developed by the medical professional; upper age limit at
determination of medical professional. Weight limitations at the determination of
medical professional.
Contraindications
Inability to hold own face mask, impaired oxygenation, or hemodynamic instability
Acute drug or alcohol intoxication or impaired consciousness (head injury,
endocrine or metabolic disease, patients taking antidepressant or psychotropic
drugs), psychologic impairment, patient who has taken medication to induce sleep.
Decompression injuries, increased intracranial pressure, increased intraocular
pressure, intraocular surgery, bowel obstruction, middle ear surgery, emphysema,
pulmonary hypertension and others
Current upper respiratory tract infection, chronic obstructive pulmonary disease
(COPD), cystic fibrosis, shock, acute pulmonary edema (APE), pneumothorax, and
major chest or maxillofacial trauma, bleomycin therapy, recent
pneumoencephalography
Pregnancy (first trimester) – patient may wish to contact OBGYN / medical
professional.
4
Development of Nitronox Delivery Protocols
It is the responsibility of the medical establishment and the medical professional to develop and
establish specific delivery protocols.
The Nitronox® Inhalation Analgesia System is designed to deliver a fixed concentration of 50%
nitrous oxide and 50% oxygen on the demand flow [self-administration] principle. The medical
professional will turn on and observe the operating indicators of the device. In order to receive the
analgesic, the patient will self-administer by holding the face mask firmly in place during the
procedure. With the face mask sealed every time the patient takes a breath, the patient inhalation
will open the demand valve and deliver the mixed gas through the face mask.
Common procedures conducted with Nitrous Oxide – Oxygen Sedation include:
General Pain Management, Labor and Delivery, Wound Debridement, Fracture Reduction,
Catheter Insertion, Foreign Object Removal, Setting Broken Bones / Lacerations, Botulinium
Injection, Barium Enema, Joint Injections, Gastrostomy, Sutures, IV Starts, CT Scans.
The Nitronox Inhalation Analgesia System is considered transient (less than 60 minutes) in terms
of continuous use when providing Analgesia (pain management), Minimal Sedation or Moderate
Sedation. However, a procedure or medical condition that occurs over the course of many hours,
also is considered to be using transient delivery, in that, given self-administration techniques, the
patient will be unlikely to hold the face mask to the face continuously for over 60 minutes. For
example, a woman in labor may safely use Nitronox in a transient self-administration mode over
the course of several hours as secondary labor and end labor stages are experienced. The upper
limit of the number of hours of this described transient delivery is at the determination of the
medical professional.
Patient Population (Adult and Pediatric): Used to deliver a gas mixture to a conscious
spontaneously breathing patient who is awake, alert and cooperative and requires relief
from moderate to severe pain and is under the continuous supervision of a healthcare
professional. Age/Weight limitations: see Relative Contraindications (at the determination
of medical professional).
Note: Porter recommends the use of a disposable full face mask (DEHP-free and Latex-free) that
is biocompatible for medical use. Follow manufacturer’s instructions. The disposable mask
materials have been chosen by the medical device manufacturers of the masks intended for
medical usage. Many establishment protocols also call for the use of a bacterial filter. Follow
manufacturer’s instructions.
Continuous flow vs. demand flow devices
Equipment to deliver nitrous oxide and oxygen sedation are often categorized as demand
flow or continuous flow devices. The Nitronox is a demand flow device. Different specific
delivery protocols will be established for the two categories of equipment. The differences
center around self-administration for demand flow devices vs. direct administration by
medical professionals for continuous flow devices. Also, continuous flow devices typically
allow the administration of variable concentrations of nitrous oxide and variable flow rates
of delivered mixture. However, some establishments have developed specific protocols
for delivery with continuous flow devices, where the medical professional is able to adjust
to deliver various percentage mixes, where, with supervision, the delivery could be
described as “self-administration,” in that the patient will hold the full face mask to the
face.
5
SELF-ADMINISTRATION VS. ASSIST TO SELF-ADMINISTRATION
WARNING: Encourage patient to self-administer. Self-administration is a safety feature of the
demand flow Nitronox in that, if for any reason the patient becomes over sedated, the patient will
be unable to successfully hold the mask in a tight seal position on the face. The result will be that
the mask falls away from the face and the demand flow will cease, allowing the patient to breathe
room air in through the mouth or nose.
WARNING: If a patient is unable to fully self-administer, and the medical professional provides
an assist to placement of the mask in a sealing position on the face, maintain patient observation
to prevent over sedation under any conditions. Discontinue the assistance in mask placement
immediately upon any observation of over sedation; remove the mask from the face entirely.
Never use a mask strap to hold the mask to the face. Never force the mask on the face; the
patient must always be spontaneously breathing.
At the determination of a medical professional, as an added precaution for procedures where an
assist to self-administration is used, the medical establishment may elect to continuously sample
the mixture delivery downstream from the demand valve by installation of an oxygen analyzer.
Self-administration for pediatric patients
Some establishments have developed specific protocols instructing the provider to
administer (“assisted-mask application” of Nitronox) nitrous oxide to pediatric patients,
typically ages 1 to 4. The concept that, for certain circumstances, the use of the Nitronox,
or the use of other demand valve delivery systems, should have a protocol where the
provider administers the nitrous oxide, as opposed to complete self-administration, is in
potential conflict with protocols for labor analgesia, where there is an emphasis on selfadministration. It is the responsibility of the medical establishment and the medical
professional to develop and establish specific delivery protocols.
Self-administration for laboring women
Establishments that have developed specific protocols for laboring women often include a
particular emphasis on self-administration and education for the laboring woman and for
her support persons on the techniques of self-administration. In these specific protocols,
the establishments have concluded that nitrous oxide can only safely be self-administered
by the laboring woman; with support persons needing to be educated that they absolutely
cannot assist in the delivery of nitrous oxide by holding the mask up to the laboring
woman’s face, since an integral safety feature of nitrous oxide use is that when the woman
has physiologically reached her limit of nitrous oxide intake, she will no longer be able to
hold the mask up to her face for more, thus self-regulating the intake. The establishments
have concluded that when someone else is allowed to hold the mask up to her face, the
potential risk of losing consciousness increases dramatically. Thus, there is an initial and
repetitive education for the laboring women and support persons.
6
DEMAND VALVE INSTRUCTIONS
Description: The demand valve of the Nitronox Inhalation Analgesia System is designed to be
used with a full face mask (Porter recommends a standard, single use, disposable mask, not
supplied sterile, DEHP-free, Latex-free, with materials chosen by the manufacturer for
biocompatibility in a medical setting) for administration of nitrous oxide to a breathing patient. It
contains no buttons or levers to force the gas into the patient and is for self-administration.
Do not strap mask on patient. Allow the patient to hold the mask over the nose and mouth to selfadminister. Upon inhalation, the demand valve opens and the nitrous oxide / oxygen mixture will
start to flow. Ceasing to inhale or if the patient stops breathing, the valve automatically closes to
stop the flow of the nitrous oxide / oxygen mixture.
Specifications:
Flow: The demand valve (through the Nitronox housing) is to be connected to a nitrous oxide
supply capable of delivering a minimum of 100 LPM @ 40-90 psig (2.8–6.2 bar). The valve itself:
160 LPM set flow: As required in demand mode 0-160 LPM at 40 psig.
Inlet fitting: Standard male DISS.
Filter: 2 micron sintered stainless steel.
Outlet: 22 mm outside diameter x 15 mm inside diameter (fits standard medical masks).
Materials: Housing and plastic parts: “Noryl”, polyester, polysulfone. Moving and adjusting parts:
Stainless steel. Fasteners: Steel, brass and aluminum all plated for corrosion resistance. Rubber
parts (except hose): Silicone
Maintenance: Cleaning (specific to the demand valve)
WARNING: Do not use near open flame or in an unventilated area. Can accelerate
burning and be toxic.
WARNING: Since the described cleaning procedures for the demand valve call
for disassembly of components, the procedures must be performed in a
hydrocarbon residue free area because of the danger of spontaneous combustion
when the residues are exposed to nitrous oxide.
Standard Cleaning and Disinfecting After Use
1. Remove (unscrew) the outlet adapter housing (mask connection outlet) and remove
(lift) the exhalation valve assembly (with attached flapper valve) from the main demand
valve subassembly. Do not remove the hose assembly.
2. Clean all foreign matter from the adapter housing, exhalation valve assembly, and
outside surfaces of main demand valve subassembly with mild soap solution, being
careful not to get any liquid inside the demand valve subassembly. Rinse the parts
thoroughly in clean water.
3. Carefully examine the three assemblies of the demand valve. Discard and replace any
cracked or damaged parts. Contact Porter for replacement assemblies.
4. Disinfect the demand valve (and collection manifold).
7
Cold Disinfecting
1. Remove the outlet adapter and the exhalation valve assembly from the demand valve
assembly as described above. Clean the outlet adapter and the exhalation valve
assembly using a disinfecting solution approved by your facility. (Refer to
Manufacturer’s Recommendations). Do not allow any solution inside the demand valve
subassembly.
2. Remove the outlet adapter and the exhalation valve assembly from the solution and
rinse thoroughly with sterile water. Rinse repeatedly to be sure that all of the solution is
removed from the parts.
3. Check the exhalation valve assembly to be sure the flapper valve is not twisted.
WARNING: If the flapper is twisted or not properly positioned, the demand valve will not
function properly. Make sure that the flapper valve lies flat against its seat.
4. Reassemble the parts
Maintenance:
Replacement Parts: Outlet Adapter Housing, Exhalation Valve Assembly, Sintered Stainless
Steel Filter
Recommended Overhaul Period:
The demand valve should be overhauled annually. Contact Porter for details.
WARNING: Do not disassemble or tamper with the main demand valve subassembly.
This will void the warranty. Improper disassembly or improper assembly procedures
may alter the performance of the valve which could cause serious injury to the patient.
In case of malfunction, return the demand valve to Porter immediately.
8
Installations
Nitronox Main Housing, Mobile E-Stand (Fig. 1.1), Mobile Stand, Wall Mount (Fig. 1.2),
Demand Valve, Corrugated Hose, Scavenger Interface
Preparation of Mobile E-Stand Fig. 1.1
Also see FM-916 E-Stand User’s Instructions
1. Slide Center Column with Cylinder
Restraint and Cylinder Yoke Block into 5Star Base (Fig. 2.1). Push down firmly until
snug. Align Cylinder Restraint as shown.
Base of cylinders will fit in between wheels
(Fig. 2.2).
Fig. 2.1
Fig. 2.2
2. Adjust the Recessed Mounting Post to
highest height by loosening and tightening
the small black handle (Fig. 3.1) on the
Yoke Block – and raising the Mounting Post
(Fig. 3.2).
Fig. 3.1 Fig. 3.2
3. The Nitronox Main Housing will mount on
the Mounting Post of the E-Stand [or Mobile
Stand] by sitting the bottom of the Housing
(Fig. 4.1) on top of the Mounting Post
(larger threads Fig. 4.2). Hold the Mounting
Post in one hand and position the Housing
with the other.
Fig. 4.1
Fig. 4.2
4. Secure the Housing on the Mounting Post
(Fig. 5.1) by twisting the Post
(counterclockwise) with one hand and
holding the Housing steady with the other
hand. Twist until the Post is snug (Fig. 5.2).
9
E-Stand with Nitronox Wall Mount
Fig. 1.1
Fig. 5.1
Fig. 1.2
Fig. 5.2
Preparation of Mobile E-Stand (continued)
5. Attach the Handle (Fig. 6.1) to the Mounting
Post – just under the Retaining Ring / Oring (Fig. 6.2). Firmly tighten both screws so
that the Handle cannot be twisted. The
back of the Handle should be positioned
over the back two cylinders (Fig. 6.3).
Fig. 6.1
Fig. 6.3
Fig. 6.2
6. Carefully clip the [shipping accessory]
plastic fasteners off of the green Oxygen
Hose and blue Nitrous Oxide Hose – under
the E-Stand Block (Fig. 7). Be careful – do
not cut the Hoses.
Fig. 7
10
7. Connect the Diameter Indexed Safety
System (DISS) color-coded green [white]
Oxygen and blue Nitrous Oxide Hoses to
the appropriate connections (Fig. 8.1) on
the bottom of the Nitronox Main Housing.
Slide the Hoses through the opening in the
Handle (Fig. 8.2) before connecting. Firmly
tighten the Hoses using a wrench.
Fig. 8.3 (shown with white hose)
Fig. 8.1
Fig. 8.2
Preparation of Nitronox Scavenger Parts
For further details, refer to Nitronox Scavenger
System User’s Manual 10152100
8. Connect the Demand Valve (Fig. 9.1) to the
black Gas Delivery Hose (connected
through underside of Nitronox Main
Housing Fig. 9.2). This is a quick connect
attachment. Push the two ends together
until click sound is heard (Fig. 9.3). To
remove – push the metal clip in – and pull
apart.
Fig. 9.1
Fig. 9.3
9. The bracket and clip on the side of the
Housing (Fig. 10.1) may be used to hold
the Demand Valve assembly and Hoses
when not in use (Fig. 10.2).
Fig. 10.1
Fig. 10.2
Fig. 9.2
11
10. Follow instructions FM-1236 included with
19mm Magenta Hose: Part number
92120041 – 19mm Corrugated Scavenger
Hose Assembly Instructions. (Figs. 11.1,
11.2, Fig. 12)
Nitronox Scavenger on Housing
Fig. 11.1
Fig. 11.2
Fig. 12
11. Attach the Nitronox Scavenger Interface to
the Center Column (Figs. 13.1, 13.2).
Fig. 13.1
Fig. 13.2
Attachment of Cylinders
Caution:
take care not to catch or pinch fingers.
12. Loosen the Tee Handle (Fig. 14.1) until
point is even with the inside of the Swivel
Arm. Push Tee Handle inwards to flip to
open position. Align Tee Handle vertically
(Fig. 14.2).
Fig. 14.1
13. Undo the Hook & Loop straps on the
Cylinder Restraint (Fig. 15)
14. Cylinder Preparation: Remove any plastic
wrap from the top of cylinder, including the
cylinder plastic washer. Verify that the
rubber washer (Fig. 16.2) provided with the
E-Stand is still in place. Use the E-Stand
washer.
15. Mount the “E” cylinders of Oxygen and
Nitrous Oxide (not included) to the E-Stand
Block. Insert cylinders correctly on indexing
pins and as marked on Block (N
16.1, 16.2; O
mounting in appropriate position.
N
Washer
When operating the swivel yoke,
Figs. 16.3, 16.4). Pins assure
2
O Pins Rubber
2
Fig. 16.1
Fig. 16.2
Fig. 14.2
Fig. 15
O Figs.
2
Fig. 16.4
Fig. 16.3
Do not remove or alter
gas indexing pins
O2 Pins
Warning
16. Slide the cylinder into place by lining up the
pins and pin holes on the cylinder. Push
into place. Properly placed, the cylinder
should hang on the pins (Fig. 17).
17. Cylinders should hang freely between
wheel base. If the wheel base interferes,
loosen and rotate cylinder restraint.
18. Rotate swivel clockwise to close (Fig. 18.1).
Swivel will move into the locked position
when Tee Handle is tightened. Secure the
Hook & Loop straps to hold cylinder in
place (Fig. 18.2).
Fig. 17
Fig. 18.2
Fig. 18.1
Fig. 19
19. The Cylinder Valve Wrench (hanging from
black Knob) is used to open/close Cylinder
Valves (Fig. 19). See FM-916 User’s
Instructions.
12
Description of Unit
The Nitronox® is an inhalation analgesia
system designed to deliver a fixed
concentration of 50% nitrous oxide and 50%
oxygen on the demand flow principle.
Nitronox operates either on pipeline gas
supply using a Mobile Stand or Wall Mount,
or medical “E” or “D” size cylinder supply by
means of a small cylinder yoke block with
regulators (Mobile “E” Stand).
The Nitronox
configurations offering three mounting styles.
1. Nitronox with Mobile Stand only (for use
with pipeline gas supply only).
2. Nitronox with Mobile “E” Stand (Fig. 20)
and cylinder mount- (2) nitrous oxide and
(2) oxygen – “E” or ”D” size. Refer to FM916 for Installation and User Instructions.
3. Nitronox with wall mount (for use with
pipeline gas supply)
Use Nitronox in conjunction with Nitronox
Scavenger System; Refer to User’s Manual /
Instructions 10152100.
Fig. 21 – Nitronox Front Cover with Mixture
Pressure and N
®
is available in various
Fig. 21
O and O2 Line Pressure Gauges
2
Fig. 20
Fig. 20 - Nitronox with Mobile E- Stand
13
Nitronox® Inhalation Analgesia System
9
14
Specifications / Functional Features
Gas Supply Duration Flow Capability Mixture Concentration
“E” Size Cylinders At Normal
Breathing Rates:
N
O Approximately 6 – 6.5 Hrs.
2
O
Approximately 2 – 2.5 Hrs.
2
Oxygen Fail Safe:
If apparatus oxygen line
pressure is depleted or disconnected, nitrous oxide
flow and demand valve flow stops automatically. If
apparatus nitrous oxide line pressure is depleted or
disconnected, demand valve will continue to
function providing 100% oxygen at reduced flow
capacity of about 55 LPM. If patient takes abnormal
shallow breaths (100 to 200 cc tidal volume),
oxygen concentration automatically increases.
Mixer Pressure Alarm: A whistle will sound
when a gas mixture regulator seat malfunction
affecting mixture concentration has occurred.
114 LPM, Maximum Mixture Concentration
(Factory Adjusted)
50% N
O and 50% O2
2
+/- 5 Percentage Points O
Warnings
If WHISTLE ALARM sounds, discontinue
patient use immediately and shut off gas
supply.
WARNING: DO NOT use Nitronox if O2 input
exceeds N2O input by 15 psi (1 bar) or
higher [see Warnings page 3]
2
Warning: Nitronox® Inhalation Analgesia
systems are intended to be used by medical
personnel trained in its use and the use of
nitrous oxide and oxygen for medical
applications.
Warnings
DO NOT use Nitronox if either line or
mixture pressure is out of green band (see
“Maintenance”). Figs. 22.1, 22.2
Encourage patient to self administer at all
times [see Warnings page 3 for details].
Fig. 22.1 Fig. 22.2
Functional Tests
Prior to first use and periodically thereafter (monthly
is suggested), perform the following tests:
Whistle Alarm Actuation:
1. Increase mixture pressure per Page 7, Step 2,
“Maintenance”, until gauge reading is in RED
“Do Not Use” area, per gauge illustration.
2. WHISTLE should sound in this range.
3. If WHISTLE sounds before or after this range,
WHISTLE ALARM ACTUATOR must be
adjusted (see “Maintenance”).
Fail Safe Check-Out Test:
1. With unit in operation (one each O2&N2O gas
supplies on), turn off or disconnect oxygen at
supply source.
2. As oxygen pressure falls to zero (as read on
oxygen line pressure gauge), demand valve
flow must stop completely.
15
Operation / Maintenance
Cylinder Pressure Readings:
compressed gas, while in the cylinder, thus the
cylinder pressure gauge can be used to determine
the amount of gas remaining in the cylinder. For
example, 2000 psi indicates full, 1000 psi indicates
half full, etc. Nitrous Oxide is a liquefied
compressed gas that vaporizes in the cylinder, thus
the cylinder pressure gauge cannot be used to
determine the amount of gas remaining in the
cylinder until all liquid in the cylinder vaporizes.
While liquid remains in the cylinder, the cylinder
pressure gauge indicates the vapor pressure which
depends on and varies with the temperature of the
liquid. For example, at 68ºF (20ºC), the vapor
pressure is about 750 psi (50 bar); at 20ºF (-7ºC), it
drops to about 400 psi (30 bar); while at 90ºF
(32ºC), it increases to about 1000 psi (70 bar). After
all the liquid vaporizes, the pressure will decrease
normally as the gas is withdrawn, and the cylinder
pressure gauge can then be us ed to determine the
amount of gas remaining in the cylinder
Oxygen is a true
.
Cautions
Always turn on CYLINDER VALVES slowly
and fully (“E” cylinder yoke models).
Hex hole in cylinder valve wrench to be
used only to tighten cylinder valve packing
nut in event of a leak.
NEVER ATTEMPT TO LOOSEN cylinder
valve packing nut. If valve stem is tight,
return cylinder to supplier.
Warning: Do not remove or alter gas
indexing pins
Good practices: Cylinders with E- Stand
1. Two cylinders of O
are typically connected at all times. Exception:
When using external gas supply of oxygen, the
E- Stand may be populated with N
and O
cylinders are not placed on “E” Stand.
2
2. Minimize leak risks: Confirm Yoke Washers are
in place before replacing/mounting cylinders.
Use Porter #A-3399-000 replacement washers
(once/yr.). Have spare washers.
and two cylinders of N2O
2
O cylinders
2
16
3. Minimize leak risks: With cylinder in position,
rotate swivel arm and move into secure locked
position when Tee Handle is tightened. To
prevent movement and potential damage to
yoke pins, always fasten the Hook & Loop strap
restraints around cylinders.
4. Assure E- Stand is populated with at least one
full cylinder of O
and N2O before starting any
2
procedure.
5. Label each cylinder with a tag or sticker
indicating “In-Use” and “Full” (“Full” is reserve
cylinder.)
6. Use Cylinder Valve Wrench to open the “InUse” cylinders of O
and N2O. Verify wrench is
2
attached to Block.
7. Cylinder pressure gauges on Block provide a
visual indication of cylinder status (see details
on Cylinder Pressure Readings)
8.
Caution: If all four cylinders (or both cylinders
of one gas) are open, the two cylinders of O2
and N
O will deplete in tandem. The “Full”
2
cylinder will empty with the “In-Use” cylinder
and will not be available as a future spare.
9. When “In-Use” cylinder is depleted, open the
spare “Full” cylinder (Close valve on empty
cylinder).
10. When “In-Use” O
Oxygen Fail Safe will stop N
cylinder is depleted, the
2
O flow and
2
demand valve flow automatically.
11. When “In-Use” N
Nitronox will deliver 100% O
O cylinder is depleted, the
2
through the
2
Demand Valve.
12. After use, turn off cylinder valves.
Caution:
With O2 cylinder turned on, the Nitronox will
have an intentional small O
tend to deplete the O
O
cylinder valve is left on.
2
cylinder if, after use, the
2
bleed, which will
2
Models With “E” Cylinder Yoke (Simple
Operation Procedure)
1. Open one each O2 and N2O Cylinder Valves
with wrench provided.
2. Observe cylinder pressures. Replace cylinder
when less than 300 psi (20 bar), at room
temperature (21.1 ºC, 70ºF). During
replacement, close all Cylinder Valves.
3. Observe line pressures (Figs. 23.1, 23.2).
Normal is 50-55 psi [3.4–3.8 bar] (green band)
for static no-flow condition. Pressure will
decrease slightly during each inspiration (see
“Maintenance”).
4. Observe mixture pressure (Fig. 23.3). Normal is
30-35 psi [2.0–2.4 bar] (green band) for static
no-flow condition. Pressure will decrease
slightly during each inspiration (see
“Maintenance”).
5. If all pressures are normal, Nitronox is ready to
use. Remove Demand Valve with Mask from
storage bracket. Instruct patient to hold Mask
lightly on face covering nose and mouth.
Instruct to breathe normally, preferably through
nose.
Encourage patient to self administer at all
times [see Warnings page 3 for details].
6. After use, turn off Cylinder Valves; store
Demand Valve with Hose. Dispose of single
use mask (not supplied sterile).
Models Using Pipeline or External Gas
Supply (Mobile Stand or Wall Mt.)
1. Connect external gas supply hoses to DISS
(Diameter Indexed Safety System) fittings.
External pressure must be 40-65 psi (2.8–4.5
bar), preferably 50-55 psi (3.4–3.8 bar).
Observe external pressures on apparatus LINE
PRESSURE GAUGES. WARNING: DO NOT
use Nitronox if O2 input exceeds N2O input
by 15 psi (1 bar) or higher.
2. Observe mixture pressure as in step 4 above.
3. Follow step 5 procedure above.
4. After use, disconnect external gas supply.
17
Fig. 23.2
Fig. 23.3
Fig. 23.1
Maintenance
1. Line Pressure Adjustment: (Green Band
for Model Using Mobile “E” Stand): Locate
appropriate PRESSURE REGULATOR (blue
lettering – nitrous oxide; green lettering –
oxygen); remove 9/16” acorn nut; insert 5/32”
hex socket key and adjust pressure to within
green band.
2.
Mixture Pressure Control Adjustment:
(Green Band): Remove LOWER CHROME
PLUG from case back. With wrench, loosen
7/16 inch hex nut (counterclockwise)
approximately one quarter turn. Insert
screwdriver through access hole, in bottom of
case, into slot of adjusting screw. While holding
nut with wrench, adjust counterclockwise to
increase pressure – clockwise to decrease.
After adjustment, tighten nut while holding
screw in position with screwdriver (see
illustration Fig. 24).
3. Leak Test System – Monthly Check of
working pressure leaks. Verify hoses are
attached from E-Stand to Nitronox Housing.
Turn one O
Stand pressure gauges read cylinder
pressures. Verify Nitronox line pressure gauges
read within green band. Note: fail safe is open
and pressure reaches Demand Valve. Turn off
N
O cylinder valve. Verify that N2O E-Stand
2
gauge reads about 750 psi (50 bar). Note exact
needle position. Verify that there is little or no
movement [up to ½ increment] of the exact
needle position in 15 minutes. Nitronox N
line pressure gauge needle will stay in green
band with no movement. Turn off O
valve. It is normal that needle of O
gauge will drop. Nitronox O
gauge needle will stay in green band with no
movement (will eventually drop after E-Stand
gauge pressure naturally depletes).
4. Whistle Alarm Actuator Adjustment:
Remove UPPER CHROME PLUG from case
back (Fig. 25). With mixture pressure
temporarily adjusted (per Step 2,
“Maintenance”) in middle of range shown (Fig.
26), insert 1/8” hex key (not provided) into
adjustment screw at end of ALARM
ACTUATOR. Adjust screw either clockwise or
counterclockwise until whistle sounds clearly.
DO NOT over adjust. Return mixture pressure
to middle of green band. Whistle sound must
stop with pressure in green band and whistle
must sound with pressure in range shown in
Fig. 26 (about 40 psi [2.8 bar]). If this cannot be
achieved, discontinue use of apparatus and
notify authorized distributor immediately.
and one N2O cylinder on. Verify E-
2
cylinder
2
E-Stand
2
line pressure
2
O
2
Fig. 24
Alarm
Actuator
Fig. 25 Back of Case; Upper adjustment access
Temporary
mixture pressure
Fig. 26
adjust range
18
Maintenance
5. Cleaning Methods
We recommend the use of an approved disinfectant for the dental / medical environment for cleaning the
outside of the Nitronox, demand valve, and accessories. Do not spray disinfectant directly onto housing.
Spray disinfectant into disposable towel and wipe unit thoroughly removing excess disinfectant to eliminate
buildup. Follow the manufacturer’s directions for use.
Introduction of moisture or other contaminants into this device may result in defective operation.
grease any part of this system (minimize fire or explosion potential).
See special demand valve cleaning instructions.
Never oil or
6. Replacing the E-Stand Check Valve
See FM-916 E-Stand for illustrations and instructions for replacement of the Check Valve Assembly.
Field repair of the Nitronox is limited to maintenance adjustments and replacement parts obtained
through Porter. All other repairs should be performed by an authorized Porter service representative.
Although the materials contained in the Nitronox Inhalation Analgesia System do not have a specified shelf life,
Porter advises a factory performance check and repair procedure every 2 years. It is Porter practice to
recommend a complete factory elastomer change out after every 10 years of product operation in the field.
Following this schedule of maintenance and repair will assure a useful product operation field life of 15 years or
more.
Also, to assure a long useful product operation field life, perform the periodic field performance tests and
adjustments, including the Line Pressure Adjustment, the Mixture Pressure Control Adjustment, the Leak Testing
of the System, and the Whistle Alarm Actuator Adjustment.
Perform the specific cleaning procedures for the Demand Valve. It is advisable to overhaul the Demand Valve
annually.
Note: In the Nitronox Scavenger System User’s Manual / Instructions 10152100, the maintenance is to replace
the foam resistor every 6 months.
19
Troubleshooting
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
1. Leakage at YOKE
CYLINDER VALVE
connection.
2. Low or no reading on
CYLINDER GAUGE with
CYLINDER VALVES open.
3. O2 cylinder (or external
supply) used too quickly
4. Line pressure out of green
band.
5. Mixture pressures out of
green band.
6. WHISTLE ALARM failure
during functional test.
7. WHISTLE ALARM sound
Note: a momentary “chirp”
sound is acceptable upon
initial application of pressure if
whistle then stops [reseats]
Missing or defective yoke seal
washer (models with “E”
cylinder yoke); damaged pins.
Cylinder pressure too low or
cylinders empty (models with
“E” cylinder yoke).
O2 cylinder valve (or external
supply) left on after use and
natural bleed depletes cylinder
(or external supply).
O
cylinder contains up to 2.5
2
hrs. breathing supply; N
O
2
cylinder contains up to 6.5 hrs.
Apparatus exposed to
temperature below 32ºF / 0ºC.
PRESSURE REGULATOR out
of adjustment (models with “E”
cylinder yoke).
PRESSURE REGULATOR
defective (models with “E”
cylinder yoke).
CONTROLLED PRESSURE
REGULATOR section of
mixture requires adjustment
REGULATOR malfunction
(models with “E” cylinder
yoke).
ALARM ACTUATOR out of
adjustment.
ACTUATOR DEFECTIVE
Leak at N2O pressure control
seat causing low O
2
concentration.
ACTUATOR DEFECTIVE.
Replace with Porter part No.
A-3399-000 (4 per Unit).
Replace cylinder with full
cylinder of appropriate gas.
Use practice of turning off
cylinder (or external supply)
after use.
Expect higher usage of O
2
cylinders
Allow apparatus to return to
room temperature before
making adjustment.
See “Maintenance” adjustment,
Step 1.
Discontinue use and notify
authorized distributor.
See “Maintenance” adjustment,
Step 2.
Discontinue use and notify
authorized distributor.
See “Maintenance” adjustment,
Step 3.
Discontinue use and notify
authorized distributor.
Discontinue use and notify
authorized distributor.
20
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 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 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 installed 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 a ltered, defaced or removed.
ORDERS All orders are to be made through authorized Parker Hannifin Corporation distributors. All billing will be
done through said distributors. Direct orders will be handled through the authorized local dealer as determined by
Parker Hannifin Corporation.
RETURNS All returned merchandise will be handled through the local Parker Hannifin Corporation distributor. No
returns will be accepted unless authorized in writing by Parker Hannifin Corporation and accompanied by the
original shipping invoice. All returns are subject to restocking charge.
Policies subject to change without notice.
The Quality System for Porter is certified to ISO 13485. The scope of our registration is:
The design, manufacture, distribution and servicing of Nitrous Oxide - Oxygen Sedation
Flow Meters, Gas Scavenging Systems, Steam Sterilizers, Gas Distribution and Office
Communication Systems for use by a physician , dentist or licensed healthcare professional.
21
Loading...