Datex-Ohmeda Tec 5 Continuous Maintenance Manual
Tec 5 Continuous
Flow Vaporizer
Operation and Maintenance Manual
User Responsibility
This Product will perform in conformity with the description thereof contained in this
operating manual and accompanying labels and/or inserts, when assembled, operated,
maintained and repaired in accordance with the instructions provided. This Product
must be checked periodically. A defective Product should not be used. Parts that are
broken, missing, plainly worn, distorted or contaminated should be replaced
immediately. Should such repair or replacement become necessary, Datex-Ohmeda
recommends that a telephonic or written request for service advice be made to the
nearest Datex-Ohmeda Field Service Support Center. This Product or any of its parts
should not be repaired other than in accordance with written instructions provided by
Datex-Ohmeda and by Datex-Ohmeda trained personnel. The Product must not be
altered without the prior written approval of Datex-Ohmeda’s Quality Assurance
Department. The user of this Product shall have the sole responsibility for any
malfunction which results from improper use, faulty maintenance, improper repair,
damage, or alteration by anyone other than Datex-Ohmeda.
CAUTION w U. S. Federal and Canadian law restrict this device to sale by or on the order of
a licensed medical practitioner. Outside the U. S. A. and Canada, check local
laws for any restrictions that may apply.
Datex-Ohmeda products have unit serial numbers with coded logic which indicates a
product group code, the year of manufacture and a sequential unit number for
identification.
AAA A 12345
This alpha character indicates the year of product manufacture
and when the serial number was assigned; “Y” = 1995, “Z” = 1996,
“A” = 1997, etc. “I” and “O” are not used.
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Tec 5 Continuous
Flow Vaporizer
Contents
Page
1.0 Introduction .................................................... 1
1.1 Operation And Maintenance Manual......................................................1
1.2 Precautions.............................................................................................1
1.3 Symbols..................................................................................................1
2.0 Servicing Policy ...............................................2
3.0 Description ..................................................... 3
3.1 General....................................................................................................3
3.2 Control Dial.............................................................................................3
3.3 Safety Interlocks.....................................................................................3
3.4 Vaporizer Identification Label................................................................4
4.0 Operating Instructions ........................................4
4.1 General....................................................................................................4
4.2 Vaporizer Mounting Procedure..............................................................5
4.3 Checking For Correct Mounting Of The Vaporizer................................6
4.4 Turning ON The Vaporizer......................................................................6
4.5 Vaporizer Removal.................................................................................6
4.6 Filling And Draining................................................................................7
4.6.1 General....................................................................................................7
4.6.2 Filling A Vaporizer Which Incorporates A Screw Cap Filler..................7
4.6.3 Draining A Vaporizer Which Incorporates A Screw Cap Filler..............8
4.6.4 Filling A Vaporizer Which Incorporates A Keyed Filler..........................9
4.6.5 Draining A Vaporizer Which Incorporates A Keyed Filler...................10
4.6.6 Filling A Vaporizer Which Incorporates A Quik-Fil™ Filler.................11
4.6.7 Draining A Vaporizer Which Incorporates A Quik-Fil™ Filler..............12
5.0 Maintenance ..................................................13
5.1 Schedule...............................................................................................13
5.1.1 Every Two Weeks.................................................................................13
5.1.2 Every Three Years................................................................................13
5.2 Cleaning................................................................................................13
5.3 Contamination......................................................................................14
5.4 Repairs..................................................................................................14
6.0 Principle Of Operation .......................................15
6.1 Interlock Mechanism............................................................................15
6.2 Selectatec Series Mounted Manifold Gas Circuit................................17
6.3 Vaporizer Valve And Sump Assembly.................................................18
6.4 Gas Flow Through The Vaporizer.........................................................19
6.4.1 General..................................................................................................19
6.4.2 By-pass Circuit.....................................................................................19
6.4.3 Vaporizing Chamber Circuit.................................................................19
7.0 Performance ..................................................21
7.1 Performance Curves.............................................................................21
7.1.1 Isotec 5%..............................................................................................21
7.1.2 Fluotec 5%............................................................................................22
7.1.3 Enfluratec 5%.......................................................................................23
7.1.4 Sevotec 5%...........................................................................................24
7.1.5 Sevotec 8%...........................................................................................25
7.2 Effects Of Variables..............................................................................26
7.2.1 Anaesthetic Agent Consumption.........................................................26
7.2.2 Temperature.........................................................................................26
Tec 5 Vaporizer Contents 1
O & M Manual Part No. 1105-0100-000 August 1999
Contents
Page
7.2.3 Barometric Pressure............................................................................26
7.2.4 Back Pressure (Steady)........................................................................27
7.2.4.1 Low And Moderate Pressures27
7.2.4.2 High Pressures 27
7.2.5 Back Pressure (Fluctuating).................................................................27
7.2.6 Carrier Gas Composition......................................................................27
7.2.7 Time Out Of Service.............................................................................27
7.2.8 Other Variables.....................................................................................28
8.0 Checking The Calibration ...................................28
9.0 Analytical Techniques .......................................29
10.0 Specification ..................................................30
10.1 Calibration.............................................................................................30
10.2 Resistance To Gas Flow With Vaporizer Out Of Circuit......................30
10.3 Liquid Capacity.....................................................................................30
10.4 Weight And Dimensions......................................................................30
10.5 Environmental Conditions....................................................................30
10.6 Performance.........................................................................................30
11.0 Warranty .......................................................31
Illustrations
Fig. 1 Vaporizer Identification Label................................................................4
Fig. 2 Vaporizer Mounting Procedure..............................................................5
Fig. 3 Locking The Vaporizer On To A Manifold..............................................5
Fig. 4 Turning ON The Vaporizer......................................................................6
Fig. 5 Unlocking The Vaporizer From A Manifold............................................6
Fig. 6 Filling A Vaporizer Which Incorporates A Screw Cap Filler..................7
Fig. 7 Draining A Vaporizer Which Incorporates A Screw Cap Filler..............8
Fig. 8 Filling A Vaporizer Which Incorporates A Keyed Filler..........................9
Fig. 9 Draining A Vaporizer Which Incorporates A Keyed Filler...................10
Fig.10 Filling A Vaporizer Which Incorporates A Quik-Fil™ Filler.................11
Fig.11 Draining A Vaporizer Which Incorporates A Quik-Fil™ Filler.............12
Fig.12 Vaporizer Interlock Mechanism...........................................................15
Fig.13 Two Vaporizers Locked On To The Manifold -
Both Turned OFF...................................................................................16
Fig.14 Two Vaporizers Locked On To The Manifold -
Vaporizer A Turned ON........................................................................16
Fig.15 Manifold By-pass Circuit......................................................................17
Fig.16 Vaporizers Flow - Schematic Diagram................................................19
Fig.17 Tec 5 Vaporizer Gas Flow.....................................................................20
Contents 2 Tec 5 Vaporizer
August 1999 O & M Manual Part No. 1105-0100-000
1.0 Introduction
1.1 Operation And Maintenance Manual
This Operation And Maintenance (O&M) Manual contains the information required in order to install,
operate and maintain the Tec 5 Continuous Flow Vaporizer.
Requests for servicing facilities, advice or assistance must be addressed either to a local Datex-Ohmeda
Field Operations Unit or to an Datex-Ohmeda Authorised Distributor.
Additional copies of this manual, quoting Tec 5 Continuous Flow Vaporizer O & M Manual Part No.
1105-0100-000, can be requested from a local Datex-Ohmeda Field Operations Unit or from an DatexOhmeda Authorised Distributor.
It is recommended that all relevant documentation, including the O & M Manual and accompanying
labels and/or inserts, is immediately available to all prospective operators.
1.2 Precautions
A number of Warnings and Cautions are used throughout this manual to draw attention to the possible
hazards and/or adverse conditions which may occur if the information and instructions provided are not
strictly observed.
Cautions and Warnings are preceded by a w symbol and are used to draw attention to a condition
which can endanger either the patient or the operator and can result in damage to the equipment.
Special attention must be paid to each Warning and Caution as it appears in the manual.
1.3 Symbols
Systems with this mark agree with the European Council Directive (93/42/EEC) for
Medical Devices when they are used as specified in their operation and maintenance
manuals. The xxxx is the certification number of the Notified Body used by
Datex-Ohmeda's Quality Systems.
European Union Representative
Tec 5 Vaporizer Page 1
O & M Manual Part No. 1105-0100-000 August 1999
2.0 Servicing Policy
During initial installation of a Tec 5 vaporizer, the Next Service Date label located on the vaporizer dial
must be completed by the Technician/Engineer/Customer responsible for the installation.
Datex-Ohmeda recommends that all Tec 5 Vaporizers are serviced every three years, irrespective of
conditions of use.
Servicing procedures for this Product must be performed by Datex-Ohmeda trained personnel in
accordance with written instructions provided by Datex-Ohmeda.
w Warning: Only Technicians/Engineers trained and certificated by Datex-Ohmeda to repair and/or
service the Tec 5 Vaporizer should attempt to repair and/or service it and it must be repaired and/or
serviced at an Datex-Ohmeda Authorised Service Centre in accordance with written instructions
provided by Datex-Ohmeda. Detailed information for more extensive repairs is included in the Tec 5
Vaporizer Service Centre Manual which is available only to Authorised Service Centres.
Warranty repair and service procedures must be performed at an Datex-Ohmeda Authorised Service
Centre. A Datex-Ohmeda Service Representative can be contacted at the nearest Datex-Ohmeda Field
Operations Unit or Datex-Ohmeda Authorised Distributor.
Do not use malfunctioning equipment. If any assistance is required, contact the nearest Datex-Ohmeda
Field Operations Unit or Datex-Ohmeda Authorised Distributor.
If the equipment is to be transported to the nearest Datex-Ohmeda Field Operations Unit, drain the
vaporizer, package it securely for protection in its original packaging and ship it prepaid. Enclose the
following items as applicable:
1. A letter describing in detail any difficulties experienced with the equipment.
2. Warranty information, such as a copy of the invoice or other applicable documentation.
3. Purchase order number to cover repair of equipment not under warranty.
4. Ship to and bill to information.
5. The name and telephone number of the person to contact.
Page 2 Tec 5 Vaporizer
August 1999 O & M Manual Part No. 1105-0100-000
3.0 Description
3.1 General
w Warning: This manual and all its associated documentation must be studied thoroughly before any
attempt is made to install, operate or maintain any part of the Tec 5 Vaporizer.
The Tec 5 Vaporizer is designed for out of circuit use in continuous flow techniques of inhalation
anaesthesia.
The vaporizer is temperature, flow and pressure compensated so that its output remains relatively
constant despite cooling due to evaporation, variations in inlet flow and fluctuating pressures as
described in Section 7.2 Effect of Variables.
Each vaporizer is agent specific and is clearly labelled with the name of the anaesthetic agent for which
it is designed.
The vaporizer is designed to be used on Selectatec Series Mounted Manifolds. The vaporizer can be
installed on other Selectatec Manifolds but the interlock system is designed to function on Selectatec
Series Mounted Manifolds only.
Mounting a Tec 5 vaporizer on a Selectatec 7 Compatibility Block is not recommended.
"It is a requirement of European Standard prEN 740 - Anaesthetic Workstations And Their Modules, that
an appropriate gas monitor is used to monitor the concentration of anaesthetic agent vapour in the
inspiratory gas when the vaporizer is in operation, in order to provide protection against hazardous
output in the event of a device malfunction".
w Warning: If the vaporizer has been inverted, connect it to a gas scavenging system, set the dial to
5% and purge the vaporizer with the carrier gas at 5 litres/minute for 5 minutes.
w Caution: Although the vaporizer incorporates an integral non-spill system, the vaporizer is intended
to be operated in its upright position.
w Caution: Turn the Vaporizer OFF when it is not in use.
3.2 Control Dial
A single control dial with a concentration scale calibrated in percentage of anaesthetic agent vapour per
total volume (% v/v) is employed to set the desired concentration of the anaesthetic agent.
A dial release is incorporated in the dial assembly to prevent accidental displacement of the control dial
from the OFF position. To select an ON setting it is necessary to pull in the dial release and
simultaneously rotate the dial counter-clockwise.
The dial and dial release are designed to enable an ON setting to be selected using only one hand.
3.3 Safety Interlocks
The vaporizer incorporates an interlock mechanism. This mechanism also interfaces with the Selectatec
Series Mounted Manifold to comprise an interlock system which is designed to help ensure that the
following criteria are satisfied:
1. The vaporizer must be locked on to the manifold before it can be turned ON.
2. Only one vaporizer at a time can be turned ON when two or more Tec 4, Tec 5 or Tec 6 vaporizers
are fitted on a Selectatec Series Mounted Manifold.
3. The gas flow enters only the vaporizer which is turned ON.
4. Any unwanted anaesthetic trace vapour is minimised after a vaporizer is turned OFF.
Tec 5 Vaporizer Page 3
O & M Manual Part No. 1105-0100-000 August 1999
w Warning: Earlier versions of the Selectatec Series Mounted Manifold which provide mounting
positions for three vaporizers require that if only two vaporizers are fitted then the centre position
must be occupied. If the centre position is not occupied the interlock which helps to ensure that only
one vaporizer at a time can be turned ON is ineffective.
Later versions of the Selectatec Series Mounted Manifold which provide mounting positions for three
vaporizers incorporate an additional interlock which helps to ensure that only one vaporizer at a time
can be turned ON even if the centre position is not occupied.
3.4 Vaporizer Identification Label
A vaporizer identification label is affixed
to the back panel of the vaporizer as
illustrated on Fig. 1.
AA.13.051
An anaesthesia system fitted with a
vaporizer identification unit uses this label
to identify the vaporizer type.
Do not affix any additional labels or
markings to the back panel, they may
adversely affect the operation of the
vaporizer identification unit.
4.0 Operating Instructions
4.1 General
The vaporizer is designed to be used on Selectatec Series Mounted Manifolds. The vaporizer can be
installed on other Selectatec Manifolds but the interlock system is designed to function on Selectatec
Series Mounted Manifolds only.
T
E
C
5
S
E
V
O
F
L
U
R
A
N
E
Fig. 1 Vaporizer Identification Label
VAPORIZER
NAME TEC 5
IDENTIFICATION
CODE
AGENT NAME
VAPORIZER
IDENTIFICATION
LABEL
Mounting a Tec 5 vaporizer on a Selectatec 7 Compatibility Block is not recommended.
w Warning: It is a requirement of European Standard prEN 740 - Anaesthetic Workstations And Their
Modules, that the gas monitoring device referred to at 3.1 of this manual is in operating condition,
by being enabled and functioning , prior to use of the vaporizer.
w Warning: Handle the vaporizer with care at all times. Do not lift or support the vaporizer by holding
the control dial.
w Warning: Before mounting a vaporizer on to the manifold ensure that only one 'O' ring is fitted to
each manifold port valve. Ensure that each 'O' ring is intact and that there is no foreign matter
around the mating surfaces. A damaged 'O' ring and/or foreign matter around the mating surfaces
can cause leaks.
w Warning: Do not use a vaporizer if the liquid level decreases to below the minimum level.
w Warning: Before using a vaporizer allow it to attain the ambient temperature of the location in
which it is to be used.
Page 4 Tec 5 Vaporizer
August 1999 O & M Manual Part No. 1105-0100-000
4.2 Vaporizer Mounting Procedure
1. Remove the red coloured dust caps fitted to the vaporizer interlock block ports, illustrated on Fig. 2.
2. Check that each port valve 'O' ring is intact and not damaged. Renew each 'O' ring if necessary.
3. Make sure that the vaporizer control dial is in the OFF position.
4. Make sure that the vaporizer locking lever is at the unlocked position, that is, in the up position.
CHECK DIAL IS AT OFF
CHECK INTERLOCK BLOCK
PORTS ENGAGE CORRECTLY
WITH MANIFOLD PORT VALVES
CHECK LOCKING LEVER
IS UNLOCKED (UP)
REMOVE DUST CAPS
FROM INTERLOCK BLOCK
PORTS
CHECK EACH MANIFOLD
PORT VALVE 'O' RING. FIT
NEW 'O' RING(S) IF
NECESSARY
AA.13.052
Fig. 2 Vaporizer Mounting Procedure
5. Carefully lower the vaporizer on to the manifold so that the vaporizer interlock block covers the two
manifold port valves with the interlock block ports correctly engaged with the manifold port valves.
w Caution: Push the locking lever down to the full extent of its travel before attempting to turn it. The
mechanism may be damaged if an attempt is made to turn the lever before it is at the full extent of
its vertical travel.
6. Press down the locking lever 1 to the full extent of its travel and then turn it clockwise 2 to the
locked position 3 to lock the vaporizer on to the manifold as illustrated on Fig. 3.
PUSH DOWN
TO FULL EXTENT
LOCKING
LEVER
DIAL
RELEASE
Tec 5 Vaporizer Page 5
O & M Manual Part No. 1105-0100-000 August 1999
1
TURN
2
LOCKING
LEVER
DIAL
RELEASE
3
AA.13.053
LOCKED
Fig. 3 Locking The Vaporizer On To A Manifold
4.3 Checking For Correct Mounting Of The Vaporizer
w Warning: To help to ensure correct operation, do not use a vaporizer which is visibly out of line on the
manifold or which can be lifted off the manifold when the locking lever is in the locked position.
1. If more than one vaporizer is fitted, visually check to make sure that the tops of vaporizers are square
to the manifold. If a vaporizer is visibly out of line, remove it from the manifold and attempt to mount it
correctly. Do not use a vaporizer which cannot be mounted correctly.
2. When the vaporizers appear to be level and their locking levers are in the locked position, attempt to lift
each vaporizer from the manifold.
3. If a vaporizer can be lifted OFF the manifold, remove it from the manifold and attempt to mount it
correctly. Do not use a vaporizer which cannot be mounted correctly.
4. Make sure only one vaporizer at a time can be turned ON, thus checking that the interlock rods are in
alignment.
5. Check the anaesthesia system for leaks in accordance with the relevant O&M Manual with the vaporizer
dial turned to 0% and then repeat the check with the vaporizer dial turned OFF.
4.4 Turning ON The Vaporizer
Note: Do not attempt to turn the dial if the vaporizer is
not properly locked on to the manifold.
1. Pull in the dial release illustrated on Fig. 4 and
rotate the dial counter-clockwise. Note that it is
not possible to turn ON the vaporizer if an
adjacent Tec 4, Tec 5 or Tec 6 vaporizer is turned
ON.
2. The vaporizer should not be used between OFF
and the first graduation mark. To avoid inadvertent
delivery of small concentrations the control dial
should be turned OFF when the vaporizer is not in
use.
4.5 Vaporizer Removal
1. Rotate the dial clockwise to turn OFF the vaporizer. If it is not completely turned to the OFF position it
cannot be released from the manifold.
2. Referring to Fig. 5, unlock the vaporizer from the manifold by turning the locking lever
clockwise to the unlocked position. Release the locking lever 2, check that the locking lever springs
up to the unlocked condition 3 and then carefully lift the vaporizer straight up and off the manifold.
LOCKING
LEVER
1
TURN
2
RELEASE
AA.13.054
Fig. 4 Turning ON The Vaporizer
UNLOCKED
LOCKING
LEVER
3
counter-
1
AA.13.053
Fig. 5 Unlocking The Vaporizer From A Manifold
Page 6 Tec 5 Vaporizer
August 1999 O & M Manual Part No. 1105-0100-000
4.6 Filling And Draining
4.6.1 General
w Warning: Do not fill the vaporizer with any agent other than the agent specified on the front label.
The vaporizer is designed for that agent only. Filling the vaporizer with any agent other than that
specified can prove to be dangerous to a patient.
w Warning: Do not fill the vaporizer unless the control dial is in the OFF position.
w Warning: Do not turn the dial ON during filling or attempt to fill beyond the ¥ mark.
w Warning: Do not drain the agent into any container other than a properly marked drug container.
w Warning: Ensure that the filler cap is tightened prior to use.
Periodically check the agent level. The vaporizer should be refilled at appropriate intervals. The
vaporizer is designed to function according to specification as long as there is agent visible above
the mark.
The vaporizer must be filled and used in an upright position. Small deviations from the upright position
do not affect either the output or the safety of the vaporizer, but because the agent depth is shallow in
relation to the diameter of the vaporizing chamber, more frequent checks of the agent level should be
performed to avoid a misleading impression of the amount of agent in the vaporizer when small
deviations from the upright position occur.
At intervals, ideally not exceeding two weeks, the vaporizer should be drained into the correct drug
bottle when the agent is low. This helps to preserve the drug purity by removing oxidized impurities,
accumulated contaminants and stabilisers. Discard the agent in a manner consistent with local policies
and guidelines. Less frequent intervals may be used when the anaesthetic agent does not contain
additives or stabilising agents.
4.6.2 Filling A Vaporizer Which Incorporates A Screw Cap Filler
w Warning: Before filling a vaporizer fitted with a screw cap filler, turn the cap slowly to allow any
pressure to vent slowly.
1. Turn the vaporizer dial clockwise to the OFF position.
FILLER CAP
HEXAGON
AA.13.024
SIGHT GLASS
DRAIN PLUG
Fig. 6 Filling A Vaporizer Which Incorporates A Screw Cap Filler
Tec 5 Vaporizer Page 7
O & M Manual Part No. 1105-0100-000 August 1999
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