Penlon Prima SP User manual

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Prima SP Anaesthetic Machine Range

User Manual

Quality and Assurance in Anaesthesia

THE IMPORTANCE OF PATIENT MONITORING

WARNING

Anaesthetic systems have the capability to deliver mixtures of gases and vapours to the patient which could cause injury or death unless controlled by a qualified anaesthetist.

There can be considerable variation in the effect of anaesthetic drugs on individual patients so that the setting and observation of control levels on the anaesthesia systems does not in itself ensure total patient safety.

Anaesthesia system monitors and patient monitors are very desirable aids for the anaesthetist but are not true clinical monitors as the condition of the patient is also dependent on his respiration and the

functioning of his cardio-vascular system.

IT IS ESSENTIAL THAT THESE ELEMENTS ARE MONITORED FREQUENTLY AND REGULARLY AND THAT ANY OBSERVATIONS ARE GIVEN PRECEDENCE OVER MACHINE CONTROL PARAMETERS IN JUDGING THE STATE OF A CLINICAL

PROCEDURE.

IMPORTANT

Servicing and Repairs

In order to ensure the full operational life of this anaesthetic machine, servicing by a Penlon-trained engineer should be undertaken periodically.

The machine must be serviced to the schedule detailed in section 8. Details of these operations are given in this Service Manual, available only for Penlon trained engineers.

For any enquiry regarding the servicing or repair of this machine, contact the nearest accredited Penlon agent:

or communicate directly with:

Service Department Penlon Limited Radley Road Abingdon OX14 3PH UK

Tel: +44 (0) 1235 547063 Fax: +44 (0) 1235 547062

E-mail: service@penlon.co.uk

Always give as much of the following information as possible:

1. Type of equipment

2. Product name

3. Serial number

4. Approximate date of purchase

5. Apparent fault

(i)

FOREWORD

This manual has been produced to provide authorised personnel with information on the function, routine performance, maintenance checks and repair procedures applicable to the Prima SP anaesthetic machine range.

Information contained in this manual is correct at the date of publication. The policy of Penlon Limited is one of continued improvement to its products. Because of this policy, Penlon Limited reserves the right to make any changes which may affect instructions in this manual, without giving prior notice.

Personnel must make themselves familiar with the contents of this manual and the machine’s function before using the apparatus.

(ii)

CONTENTS

Page No.

USER RESPONSIBILITY 01

1. WARNINGS AND CAUTIONS 02

2. PURPOSE 05

3. DESCRIPTION 06

3.1 Framework and General Construction 06

3.2 Gas Circuit NON-AHD MACHINES 07

3.3 Gas Circuit Schematic 07

3.4 Gas Supply Safety Devices 10

3.5 Mechanical AHD 11

3.6 Pressure Gauges 12

3.7 Flowmeters and Controls 13

3.8 Vaporizers 14

3.9 Common Gas Outlet (CGO) Block 15

3.10 Electrical Power Supply 16

3.11 Third/Fourth Gas Options 17

3.12 Auxiliary Gas Outlets 17

3.13 Oxygen Monitor 18

3.14 A100 Absorber 23

3.15 Prima SP Anaesthetic System - MRI Compatibility 23

4. SPECIFICATION 24

4.1 Physical Dimensions 24

4.2 Gas Supplies 25

4.3 Flowmeters 25

4.4 Gas Pressures 26

4.5 Auxiliary Gas Outlets 27

4.6 Oxygen Failure Warning Devices 27

4.7 Oxygen Flush 27

4.8 Mechanical AHD Systems 27

4.9 Environmental 28

4.10 Third and Fourth Gas Options 28

4.11 Electrical Supply 28

4.12 Oxygen Monitor 29

5. PRE-USE CHECKS 31

5.1 Pre-use Check List 31

5.2 Pre-use Checks (Non-AHD Machines) 33

5.3 Pre-use Checks (Machines with Mechanical AHD) 35

5.4 Leak Rate Check 37

5.5 Electrical Supply 37

5.6 Patient Breathing System 38

5.7 Oxygen Flush 42

5.8 Anaesthetic Gas Scavenge System (AGSS) 42

5.9 Alarm System Testing 43

5.10 Vaporizers 44

5.11 Ventilator 44

5.12 Oxygen Monitor 45

(iii)

CONTENTS

6. FUNCTION TEST 49

6.1 Introduction 49

6.2 Machine Frame 50

6.3 Electrical Safety Tests 50

6.4 Pipeline Gas Supply and Non-Return Valve 51

6.5 Cylinder Gas Supply and Pressure Reducing Valves 52

6.6 Flowmeter Unit 54

6.7 Gas Safety Devices 56

6.8 Vaporizers and Back Bar Manifold Assembly 57

6.9 Reduced Pressure Gas Circuit Leakage 58

6.10 Emergency Oxygen Flush Control Test 58

7. FAULT FINDING 59

7.1 Introduction 59

7.2 Fault Diagnosis Table 60

8. SERVICE SCHEDULE 69

8.1 Service Schedule 69

8.2 Six Month Service Checks 69

8.3 Twelve Month Service Checks 72

8.4 Twenty-four Month Service Checks 75

8.5 Seventy-two Month Service Checks 78

9. SERVICING PROCEDURES 82

9.1 Servicing 82

9.2 Ancillary Equipment 82

9.3 Cleaning and Sterilisation 84

9.4 Gas System Components 85

9.5 Internal Gas Pipework 85

9.7 Front Cover - Remove and Refit 88

9.7 Flowmeter Cover 89

9.8 Gear Linkage - Reset 90

9.9 Control Valve Capsule Removal/Replacement 92

9.10 Oxygen Reservoir - Removal/Replacement 93

9.11 Secondary Regulators 94

9.12 Gas Block - Remove and Refit 95

9.13 Selectatec Compatible Manifold Block 96

9.14 Gas Delivery Switch 97

9.15 Air/N2O Interlock Switch 98

9.16 Oxygen Failure Visual Indicator 99

9.17 CGO - Clippard Valve Replacement 100

9.18 Flowmeter Tubes - Removal 101

9.19 Flowmeter Assembly - Removal 102

9.20 Flowmeter Lighting - Removal 103

9.21 Oxygen Monitor - Battery Replacement 104

9.22 Oxygen Monitor Sensor 105

9.23 A100 Circle System Absorber 106

10. SPARE PARTS LIST 107

11. APPENDIX 130 Care of Back-up Battery 130 Product Classification and Labelling Terminology 131 Wiring Diagram - Lighting 132 Wiring Diagram - General 133

(iv)

USER RESPONSIBILITY

This anaesthetic machine has been built to conform with the specification and operating procedures stated in this manual and/or accompanying labels and notices when checked, assembled, operated, maintained and serviced in accordance with these instructions.

To ensure the safety of this device it must be checked and serviced to at least the minimum standards laid out in this manual. A defective, or suspected defective, product must not under any circumstances be used.

The user must accept responsibility for any malfunction which results from noncompliance with the servicing requirements detailed in this manual.

Additionally, the user must accept responsibility for any malfunction which may result from misuse of any kind or noncompliance with other requirements detailed in this manual.

Statements in this manual preceded by the following words are of special significance:

WARNING means there is a

possibility of injury to yourself or others.

CAUTION means there is a possibility

of damage to the apparatus

or other property.

NOTE indicates points of

particular interest for more efficient and convenient

operation.

Always take particular notice of the warnings, cautions and notes provided throughout this manual.

Worn, broken, distorted, contaminated or missing components must be replaced immediately. Should such a repair become

necessary it is recommended that a request for service advice be made to the nearest Penlon accredited agent.

This device and any of its constituent parts must be repaired only in accordance with written instructions issued by Penlon Limited and must not be altered or modified

in any way without the written approval of Penlon Limited. The user of this equipment shall have the sole responsibility for any malfunction which results from improper use, maintenance, repair, damage or alteration by anyone other than Penlon or its appointed agents.

USA and Canadian Federal Law restricts the sale and use of this device to, or on the order of, a licensed practitioner.

1. WARNINGS AND CAUTIONS

The following WARNINGS and CAUTIONS must be read and

understood before using this anaesthetic apparatus.

WARNINGS

1. This apparatus is designed for use

only with non flammable anaesthetic agents. It must not be used with or in close proximity to flammable anaesthetic agents, due to a possible fire or explosion hazard.

2. Exterior panels must not be

removed by unauthorised personnel and the apparatus must not be operated with such panels missing. On machines with an electrical power supply, there is a possible electric shock hazard.

during test procedures as well as during use with a patient.

6. Prima SP machines must only be used with Sigma Delta vaporizers (or other vaporizers approved by Penlon Limited) installed by means of the Cagemount or Selectatec system. Free-standing vaporizers may be accidentally tipped, resulting in excessive and uncalibrated volumes of anaesthetic drug entering the breathing system

Do not install or connect any vaporizers of any description between the Common Gas Outlet (CGO) and the breathing system unless they are specifically designed for such use. (If this is done, the oxygen flush flow will pass through the vaporizer and may result in gross overdosage when the flush valve is operated.)

3. No oil, grease or other flammable lubricant or sealant must be used on any part of the machine in close proximity to medical gas distribution components. There is a risk of fire or explosion.

4. When attaching cylinders of medical gases ensure that the machine yoke and cylinder faces are dust free and clean and that the sealing washer provided is in position between the cylinder valve and the yoke. Tighten the yoke securely before opening the cylinder valve. Dust and dirt presents a fire hazard in the presence of high pressure gas. Leakage of high pressure gas can cause serious injury.

5. Anaesthesia apparatus must be connected to an anaesthetic gas scavenging system (AGSS) to dispose of waste gas and prevent possible health hazards to operating room staff. This requirement must be observed

7. The breathing system which conveys gases from the anaesthetic machine to the patient and disposes of expired gases is a vital part of the anaesthetic delivery system. Because breathing systems require frequent cleaning and disinfection they are not a permanent part of the anaesthetic machine and therefore cannot be directly under the control of the anaesthetic machine manufacturer. However, we strongly recommend that only breathing systems which have been approved and authorised by Penlon for use with the Prima SP range should be employed. This is particularly important when mechanical ventilation is employed.

8. When mechanical ventilation is employed the patient breathing system must be connected directly to an over-pressure relief valve to prevent the possibility of barotrauma.

WARNINGS AND CAUTIONS

9. Always perform a pre-use check of the machine, including vaporizers, ventilator, circle absorber and monitors before clinical use. Follow the pre-use checklist (see section 5) as a minimum requirement. Many clinical accidents occur because of a failure to check for correct function.

10. The machine must not be used if any of the alarm, monitoring or protection system devices are not functioning correctly.

11. The machine must not be fitted with more than four operator accessible mains socket outlets. There is a risk of an excessive leakage current.

12. The use of antistatic or electrically conductive breathing hoses is not recommended when using high frequency electrical surgery equipment (e.g. : Diathermy). Burns may be caused.

14. Before any electrically powered machine is used clinically for the first time, check that the hospital engineering department has carried out an earth continuity test.

15. Before using any additional electrical equipment powered by the auxiliary sockets on the machine, check that the additional equipment is correctly wired and is earthed through its plug. A missing or defective protective earth conductor may increase earth leakage currents to the patient to values exceeding the allowable limits, resulting in ventricular fibrillation, or interference with the pumping action of the heart.

Take care when moving a fully loaded machine, particularly when negotiating ramps. Check that hoses or power leads are not trailing on the floor.

CAUTIONS

1. Flowmeter needle valves are designed to seal with light torque and may be damaged if tightened excessively. Take particular care with the carbon dioxide flowmeter control (if fitted); do not force the control knob past either the fully open or fully closed positions.

2. Open cylinder valves slowly to avoid damage to pressure reducing valves. Ensure that cylinder valves are at least one full turn open when in use.

3. Under no circumstances should anaesthetic agents be used for cleaning purposes.

4. After use, always disconnect the machine from the piped gas supply and/or close the gas cylinder valves.

5. Mechanical AHD system - The oxygen flow control is restricted to prevent the needle valve from fully closing. This ensures a minimum basal flow of oxygen. DO NOT attempt to close the flow to zero. Do not overtighten.

6. Compressed gas supplies must be clean and dry.

16. Additional equipment placed on the top shelf must be securely attached.

WARNINGS AND CAUTIONS- O2 Monitor

Oxygen Monitor

WARNINGS

1. We recommend calibration of the oxygen monitor every time the system is turned on, as a safety precaution.

2. Do not attempt to open the fuel cell. The sensor contains a small quantity of electrolyte, classified as a harmful irritant which is potentially hazardous.

3. ALWAYS check the integrity of the sensor assembly before use. See section 3.4.

4. Once exhausted, the sensor must be disposed of according to hospital, local, state and federal regulations.

5. The sensor measures oxygen partial pressure, and its output will rise and fall due to pressure change. An increase in pressure of 10% at he sensor inlet will produce a 10% increase in sensor output.

Using the oxygen monitor

6. When the battery voltage has fallen to the minimum safe level, the oxygen monitor will automatically shut down to avoid permanent damage to the battery.

7. If the internal battery is fully discharged, the oxygen monitor will not function in the event of mains power failures. The battery must be recharged before the oxygen monitor is used clinically, otherwise back-up time can not be guaranteed.

See section 3.13.

CAUTIONS

1. Do not sterilise the oxygen sensor or control unit components. These components are not compatible with sterilisation techniques and damage may result.

2. Do not autoclave or expose the sensor to high temperatures.

3. If the sensor shows signs of being affected by condensation, dry the sensor with soft tissue. Do not use heat to dry the sensor.

NOTES

1. The O2 SENSOR FAULT alarm indicates that one of the following conditions has occurred. a) Internal electrical fault b) Software/electronics fault c) Oxygen sensor fault.

2. The concentration read-out may, in certain conditions of excess pressure, show a value above 100%. To accommodate these conditions it is possible to set the high alarm value up to 105% (see section 5).

3. To maintain maximum sensor life, always remove the unit from the

breathing circuit after use.

2. PURPOSE

The Prima anaesthesia workstation range is intended to provide controlled concentrations and flows of anaesthesia gases into a patient breathing system, from where the anaesthesia ventilator and breathing circuit will then deliver this fresh gas mixture to the patient Use in conjunction with anaesthetic vaporizers, breathing hoses and patient connection fittings which comply with the relevant ISO standard or equivalent.

Depending upon the patient circuit selected, the machines can be used in open, semiopen, semi-closed or closed circuit configurations.

The range has been designed to give a wide choice of configurations and accessories, as follows:

Machine size

Prima SP101 Induction machine with a single vaporizer on the backbar manifold, and up to three gas cylinders.

Anti-hypoxic Device (AHD)

Machines can be specified with a mechanical AHD system, designed to minimise the risk of a hypoxic mixture reaching the patient, see section 3.

Oxygen monitor (optional)

The Oxygen Monitor is intended to continuously measure and display the concentration of oxygen in breathing gas mixtures used in anaesthesia, and is intended for adult, paediatric and neonatal patients. The oxygen monitor is a module within an anaesthesia machine. The oxygen monitor is intended for use by health care providers, i.e. Physicians, Nurses and Technicians for use with patients during general anaesthesia.

Prima SP102 Medium width machine with capacity for two vaporizers on the backbar manifold, and up to four gas cylinders.

Gas supplies

SP101 Up to three gases

SP102 Up to four gases (oxygen,

nitrous oxide, carbon dioxide, and air, with pinindex cylinder yokes (see above), and provision for up to three pipeline supply inlets.

Vaporizer mounting systems

Back bar manifold for Selectatec Compatible, or Cagemount type vaporizers.

3. DESCRIPTION

3.1 Framework and General Construction

Frame

The machine has a cast base, extruded aluminium uprights, and aluminium panels.

Mobility

Trolley models have four castors, with a brake on each of the front castors. The castors are five inches diameter with antistatic rubber. A footrest is mounted on the front of the machine. To aid manoeuverability, two side handles are provided.

Mounting posts and brackets

A ‘T-slot’ mounting system is built into each side upright, to allow the use of pole-mount brackets, V-brackets, and ventilator

mounting brackets. The pole mount upright (see illustration) can be used to mount a complete AV-series Ventilator, or bellows unit only. V brackets can be used to mount a gas scavenging system, suction units, and accessories.

Draw units and work surfaces

The machine can be fitted with a base drawer unit (as illustrated) plus two additional smaller drawers. The work surface has has raised edges to prevent instruments, vials etc. from rolling off.

The Prima SP 102 illustrated is equipped with a standard full-width top shelf unit suitable for a large monitor, and a pull-out writing tablet mounted under the work surface. Options available include a CPU tray mounted above the drawer unit.

Prima SP 102 with standard top shelf and base drawer unit

Pole mount system fitted to frame upright

DESCRIPTION

3.2 Gas Circuit

Gas Supplies

For each size machine, a variety of cylinder and pipeline combinations can be added to the basic specification of oxygen and nitrous oxide cylinder and pipeline supply.

For example, the Prima SP102 can be supplied with an extra two gas cylinders (choose from one additional oxygen, one additional nitrous oxide, one carbon dioxide, one air), and one extra pipeline supply - Air.

Note a) Kits are available for fitment to

existing machines - see section 9 (Ordering Information).

b) Carbon dioxide is not available

on US specification machines.

Cylinder Yokes

The cylinder yokes are rear mounted and conform with ISO standards for pin-index fitting. To ensure that only cylinders of the appropriate gas may be installed the yokes are designed so that the retaining latch cannot be closed unless the index pins are

fully engaged.

Pipeline Inlets

Machines can be fitted with up to three pipeline gas inlets mounted on the rear of the machine.

Pipeline supply hoses are connected by non-interchangeable, threaded unions.

Filters

To prevent dirt entering the gas system, cylinder yokes and pipeline inlets are fitted

with filters.

pressure gauge tapping for direct mounting of a pressure gauge, and a non-return valve to prevent back flow of gas.

In addition, gas blocks for cylinder supplies have a diaphragm pressure regulator to reduce the pressure of the compressed gas supply, and a pressure relief valve, factory set to prevent any pressure build up under the diaphragm should any leakage develop across the reducing valve seat.

Secondary Pressure Regulator

For oxygen, nitrous oxide, and air, a second stage regulator reduces the pressure supplied to the flowmeter controls (see

section 4.4).

The fitment of a secondary regulator for oxygen and nitrous oxide enhances the performance of the mechanical AHD system fitted to some models.

Secondary regulation of the air supply is utilised to allow connection to high pressure air pipeline supplies.

Carbon Dioxide Flow Restrictor

On machines with a carbon dioxide supply, an integral, factory set, flow valve is fitted to restrict the flow of carbon dioxide to 500 ml/min.

3.3 Gas Circuit Schematics

Gas circuit schematics for: a) Non-AHD machines b) Mechanical AHD machines are shown on the following pages, and both show a four-gas machine. All available gas supply options are shown.

Gas Inlet Block

Each individual gas supply, from a cylinder or pipeline, is routed through a separate gas block.

Each gas block has an integral high

Note that carbon dioxide is not available for US specification machines.

Prima SP Non-AHD Machine

UK specification four-gas machine Note: US spec. machines are not fitted with CO

Air

N2O

facility

Pneumatic pressure source

Filter

Pressure gauge

Pressure regulator

Pressure relief valve

Pneumatic on/off switch

Gas cut-off valve (normally open)

Gas cut-off valve (normally closed)

Gas cut-off valve (open/closed)

Reservoir

Audible alarm

Flow control valve (variable, but note that valve 1 is not user-adjustable)

Flowmeter

Vaporizer

Oxygen flush valve

Non-return valve

Power take-off point (or test point)

Gas reference connection

Visual indicator

Prima SP Mechanical AHD Machine

UK specification four-gas machine Note: US spec. machines are not fitted with CO

Air

N2O

facility

Pneumatic pressure source

Filter

Pressure gauge

Gas cut-off valve (normally open)

Gas cut-off valve (normally closed)

Gas cut-off valve (open/closed)

Flowmeter

Vaporizer

Oxygen flush valve

Non-return valve

Pressure regulator

Pressure relief valve

Pneumatic on/off switch

Reservoir

Audible alarm

Flow control valve (variable, but note that valve 1 is not user-adjustable)

Power take-off point (or test point) Gas reference connection

Mechanical connection

Visual indicator

DESCRIPTION

3.4 Gas Supply Safety Devices

3.4.1 Gas Supply Cut-off Device

A gas cut-off device, triggered by low oxygen supply pressure, cuts the supply of nitrous oxide, and carbon dioxide (if fitted).

The cut-off operates when the oxygen pressure falls below 172 kPa (25 psi).

Gas supplies are reinstated only when the oxygen supply pressure rises above 227 kPa (33 psi).

3.4.2 Oxygen Supply Failure

Warning Whistle

A whistle gives an audible warning when there is a reduction of oxygen supply pressure. Operated solely by the remaining oxygen in the machine system, the warning whistle is prolonged by an oxygen reservoir built into the gas circuit, allowing a minimum warning whistle of 7 seconds duration.

The whistle will start to sound when the pressure falls to approximately 172 kPa (25 psi), and will continue to sound until the pressure falls to approximately 70 kPa (10 psi).

3.4.4 Air/N

(Machines with Air option)

The user can switch between Air and Nitrous Oxide (A).

NOTE a) The machine will NOT deliver a mixture of Air and nitrous oxide.

b) On machines with Mechanical AHD, the

2/N2O linkage

O continues to operate.

2O Interlock

3.4.5 Oxygen Supply Visual Indicator

The indicator (B) is operated from the oxygen supply and shows GREEN when the supply is at working pressure, and RED if the pressure falls.

3.4.6 CO2 Flow Restriction

The maximum flow of carbon dioxide is restricted to 500 ml/min by a pre-set flow control valve. This valve is not user-adjustable. Note that carbon dioxide is not available for US specification machines.

Oxygen consumption of the whistle is approximately 2 L/min when sounding and nil at other times.

3.4.3 Fresh Gas Pressure Relief Valve

A pressure relief valve is mounted between the vaporizer back bar and the common gas outlet (CGO) on the inside face of the machine right hand upright.

It is designed to prevent fresh gas being delivered to the breathing system at pressures exceeding 39 kPa (5.4 psi). This valve also protects machine components against excessive pressure in the event of a total blockage of the CGO.

3.4.7 Mechanical AHD

A mechanical link between the oxygen control valve and a needle valve in the nitrous oxide flow ensures that the machine delivers a fresh gas mixture with a minimum oxygen concentration of 30% ±3%, irrespective of the flow of nitrous oxide set by the anaesthetist. With the nitrous oxide control valve fully open, the oxygen and nitrous oxide flows are then both controlled by the oxygen control valve.

See section 3.5 for a full description

3.4.8 Low Pressure Gas Tubing

Diameter-indexed tubing is used for the low pressure gas system - see section 4.

DESCRIPTION

3.5 Mechanical AHD (Anti

Hypoxic Device)

3.5.1 Introduction

The Mechanical AHD is housed within the flowmeter module and comprises a gear linkage between the oxygen control valve and a needle valve in the nitrous oxide flow.

The system is designed to control the relative flow rates of oxygen and nitrous oxide. A predetermined minimum oxygen concentration of 30% ±3% in the oxygen / nitrous oxide mixture is maintained over the flow range to ensure that a hypoxic mixture is not supplied from the anaesthetic machine.

3.5.2 Gas Delivery Switch

The Gas Delivery Switch (A) operates on the oxygen supply and must be in the ‘On’ position for normal operation of the anaesthetic machine. The switch consequently controls the supply of all gases provided with a gas cut-off triggered by a predetermined pressure level within the oxygen supply (see section 3.4.1).

A whistle (oxygen failure warning whistle) will sound briefly whenever the gas delivery switch is turned on or off. Note that the whistle functions normally if the oxygen supply fails (see section 3.4.2).

The switch also controls the electrical supply to the optional Flowmeter Lighting unit and

2 Monitor (see section 3.13.2).

NOTE Machines with an Air supply option are fitted with an Air/N2O Interlock switch (B). The machine will NOT deliver a mixture of

Air and nitrous oxide - see section 3.4.4) . This switch must be in the N allow a flow of Nitrous Oxide.

The nitrous oxide control knob on the flowmeter module operates a secondary needle valve in the nitrous oxide flow. It is positioned downstream of the primary valve and therefore is used only to restrict the flow already set by the primary valve, which itself has been determined by the position of the oxygen control knob.

Therefore for any oxygen flow set by the user, the mixture delivered will still contain a minimum 30% ±3% oxygen even with the nitrous oxide control knob fully open. As the nitrous oxide knob is progressively closed, the oxygen content of the mixture increases to 100%.

2O position to

3.5.3 Gear Linkage and Nitrous Oxide Control Valves

A gear linkage connects the oxygen control knob on the flowmeter module and a needle valve in the nitrous oxide flow. This linkage limits the flow of nitrous oxide relative to the flow of oxygen set by the user.

Note that this needle valve acts as the primary nitrous oxide valve, and is actuated only by movement of the oxygen control.

3.5.4 Oxygen Basal Flow

To allow the system to function correctly, an oxygen basal flow is continuously supplied (see section 4.8). This basal flow can only be turned on and off by using the Gas Delivery Switch (A).

CAUTION The oxygen control is restricted to prevent the needle valve from fully closing. This ensures a minimum oxygen basal flow. DO NOT attempt to close the flow to zero. Do not overtighten the knob.

DESCRIPTION

3.6 Pressure Gauges

Pressure gauges (50 mm diameter) are located on the front panel below the flowmeter bank.

The gauges for the third and fourth gases (if fitted) are positioned between oxygen and nitrous oxide. Unused gauge positions are blanked out.

All pressure gauges are colour coded and labelled for the gases whose pressures they are indicating.

Cylinder contents are marked CYLINDER and pipeline pressure gauges are marked PIPELINE.

The gauges are calibrated in kPa x 100.

DESCRIPTION

3.7 Flowmeters and

Controls

3.7.1 All models

The flowmeters, mounted behind the perspex cover on the left hand side of the machine, are length-indexed to prevent inadvertent, incorrect installation.

All floats indicate flow rate in line with the upper surface as shown below.

Read flow at this level

Each flow control valve is positioned directly underneath the flow tube assembly to which it corresponds, and the control knob is colour-coded for the gas which it controls.

supply of oxygen and must be in the ON position for normal operation of the machine.

Flow control of each gas is achieved by a needle valve comprising a polished stainless steel needle mounted concentrically in a common manifold block. To minimise wear and material pick-up the needle seat is manufactured from silver. The flow control knob is turned counter-clockwise to increase the gas flow.

CAUTION

Needle valves are designed to seal with light torque and may be damaged if tightened excessively. DO NOT USE EXCESSIVE FORCE.

3.7.2 Optional Dual Cascade Flow Tubes

The flow of gas through dual cascade system flow tubes always flows through the low-flow tube first. The high-flow tube will not show any flow until more than 1 L/min is set.

At flows above 1 L/min, the high-flow tube reading indicates the rate of flow for that gas.

The oxygen flow control knob is made physically distinguishable from the other flow controls for identification by touch in accordance with ISO standards.

When fitted, air and carbon dioxide flowmeters are always installed in the inner positions on the flowmeter assembly. These positions are blanked out if air or carbon dioxide are not specified for the machine.

NOTE Machines with an Air supply option are fitted with an Air/N machine will NOT deliver a mixture of Air

and nitrous oxide - see section 3.4.4) . This switch must be in the N allow a flow of Nitrous Oxide.

The gas delivery switch, positioned to the right of the flowmeter bank, controls the

2O Interlock switch (The

2O position to

3.7.3 Carbon Dioxide Flow Restriction

The maximum flow of carbon dioxide (if fitted) is restricted to 500 ml/min.

DESCRIPTION

3.8 Vaporizers

CAUTION

Read the instruction manual supplied with the vaporizer before clinical use.

3.8.1 Vaporizer Mounting Systems

Vaporizers for the administration of volatile anaesthetic agents can be fitted to customer’s requirements as follows:

(a) Up to two Penlon Sigma Delta

Selectatec compatible vaporizers (interlock or non-interlock), mounted on a Selectatec compatible backbar.

(b) One or two Penlon Sigma Delta

Cagemount vaporizers mounted on a Modura rail (check that relevant national standards for your country allow fitment of more than one cagemount type vaporizer).

WARNING

Vaporizers must always be securely mounted, and never used free-standing. Unmounted vaporizers may be accidentally tipped resulting in uncalibrated and excessive volumes of liquid anaesthetic drug entering the breathing system.

Vaporizers of any description must not be installed or connected between the Common Gas Outlet (CGO) and the Breathing System, unless they are specifically designed for such use. (If this is done, the oxygen flush flow will pass through the vaporizer, and severe overdosage may result).

3.8.2 Selectatec Compatible Vaporizers

Selectatec compatible vaporizers, e.g. the Sigma Delta with the Selectatec compatibility block, may be mounted on a universal back bar manifold built onto the Prima range as an option.

Single and two-station manifolds are available, with each station fitted with two valve capsule assemblies for vaporizer

connector block attachment.

When a vaporizer is installed on a station the valves on that station open automatically to allow gas flow into and out of the vaporizer. Removal of the vaporizer from the station closes the valves on that station.

Selectatec Compatible vaporizer interlock systems are described in the literature

supplied with the vaporizer.

3.8.3 Cagemount Vaporizer

Vaporizers fitted with cagemount tapers have the male taper (inlet port) on the left, and the female taper on the right (viewing the front of the vaporizer).

It is recommended that detachable cagemount connectors are retained with a safety clip (catalogue number 52275) to prevent inadvertent disconnection.

DESCRIPTION

3.9 Common Gas Outlet (CGO) Block

The CGO block is mounted on the rail on the front of the machine, and can be moved along the rail. Slacken the securing screw under the block and carefully slide the block along the rail to the required position. Tighten the screw to hold the block in place.

The fresh gas outlet is located on the front face of the block, with 22 mm male taper and concentric 15 mm female taper. The male taper incorporates the Penlon Safelock system designed to prevent accidental disconnection of the breathing system.

A high mounting position for the CGO is available as an option for induction machines.

Oxygen Flush

An emergency oxygen flush valve button is mounted on the top front of the CGO block

and is marked ‘O Depressing the button provides a delivery of between 35-75 litres/min of oxygen into the common gas outlet. Releasing the button allows the springloaded valve to return to its normal position.

2 FLUSH’.

DESCRIPTION

3.10 Electrical Power Supply (if specified)

3.10.4 AV900 or AV800 Ventilator (if fitted) Power Supply

3.10.1 Mains Power Supply

Power is fed to the machine via the mains lead, to power an auxiliary output panel, and

optional flowmeter bank light.

NOTE

a) It is the user’s responsibility to ensure that the total sum of leakage currents from additional equipment plugged into the auxiliary sockets plus the leakage current from the machine does not exceed the values specified in any relevant national standards that may apply in the country where the machine is in use. b) Each socket is protected with a 5 Amp fuse.

3.10.2 Auxiliary Power Supply Sockets (if fitted)

An optional mains electricity auxiliary panel with three or four sockets can be specified, and fitted to the rear of the machine.

The mains lead for an AV-series ventilator can be plugged into one of the auxiliary power sockets on the rear of the machine.

Should the electrical power supply to the ventilator fail, the ventilator has a battery back up system to power the ventilator for 60 minutes, if the battery has been maintained in a fully charged condition.

Reference must be made to the separate user instruction manual supplied with the ventilator

Charging of the back-up battery takes place automatically when the ventilator mains lead is connected to a ‘live’ mains supply. The OFF indicator on the ventilator front control panel will show a yellow light during charging.

NOTE

The stated battery back-up period will only be available if the battery is kept fully charged. After the back-up power supply has been run down, the ventilator will not function until the battery is in a fully charged state. A fourteen hours recharge will be necessary to bring the battery to full charge.

The supply to the sockets is controlled by an ON/OFF switch (A).

3.10.3 Flowbank Lighting (optional)

The lighting system is controlled by the main ON/OFF switch (A).

3.10.5 Monitor and Other Accessories (if fitted)

The mains lead (or adaptor) for a monitor system or other accessories requiring an electrical supply can be plugged into one of the auxiliary sockets on the rear of the machine. See 3.13.17.

DESCRIPTION

3.11 Third/Fourth Gas Options

3.11.1 Air

When air is requested as the third/fourth gas, the machine specification is modified as stated in 4.10.1.

NOTE Machines with an Air supply option are fitted with an Air/N will NOT deliver a mixture of Air and nitrous oxide - see section 3.4.4). This switch must be in the N2O position to allow a flow of Nitrous Oxide.

3.11.2 Carbon Dioxide

When carbon dioxide is requested as the third/fourth gas, the machine specification is modified as stated in 4.10.2.

2O Interlock switch (The machine

Gas supply cut-off devices operate on carbon dioxide in all machines.

An integral, factory-set flow valve is fitted to restrict the flow of carbon dioxide to 500 ml/min.

Note that carbon dioxide is not available on US specification machines.

3.12 Auxiliary Gas Outlets

Oxygen

Auxiliary oxygen outlets are mounted on the right hand side frame upright.

Air

On machines with an air cylinder/pipeline supply, an auxiliary air outlet is fitted above the

oxygen outlets.

DESCRIPTION - O2 Monitor

3.13 Oxygen Monitor (Optional)

The oxygen monitor continuously measures and indicates the concentration of oxygen in the breathing system, and triggers an alarm when the concentration varies from the set levels.

CAUTION

If your machine is fitted with an AV900 Ventilator with a built-in Oxygen Monitor, please refer to the AV900 user manual for instructions on setting up and operation.

3.13.1 System Description

The Oxygen Monitor uses a fast-responding, oxygenspecific, self powered sensor that achieves 90% of final value in less than 10 seconds.

Sensor life:

approximately 1 500 000 O

20oC (minimum one year in most normal applications).

2 percent hours at

An external probe is supplied with a 2 m (6 ft) extendable cable and diverter fitting for a standard 15 mm Tee adaptor. The probe has a safety lock.

The system has user-adjustable high-level and lowlevel alarms with visual and audible indication of alarm conditions.

Easy-to-read, seven segment LED display for highset, low-set, and oxygen concentration readings.

The monitor is controlled by the machine gas system master On/Off switch (A).

A back-up battery provides a minimum of 60 minutes operation in the event of mains failure.

The battery is charged when the machine is connected to the mains supply.

3.13.2 System On/Off Switch

The switch controls gas delivery from the anaesthetic machine, and electrical power to the oxygen monitor.

The switch must be in the On position to use the oxygen monitor and anaesthetic machine.

When switched to On, the monitor will always default to previous settings.

DESCRIPTION - O2 Monitor

Oxygen monitor control panel

1. O2 Concentration display 6. High set key

2. Low alarm set display 7. Low set key

3. High alarm set display 8. Calibrate key

4. Alarm LEDs 9. Low alarm set / Calibration control

5. Alarm mute key 10. High alarm set control

3.13.3 Displays

Oxygen Percentage Readout

The display provides direct readout of oxygen concentrations in the range of 0-100%. If the oxygen concentration exceeds 100%, the display will flash.

Low Alarm Set Readout

The indicated value represents the oxygen percentage at which the low alarm will be activated. The low alarm set value is limited within 18-99%. To set the low oxygen concentration alarm, see section 3.3.2.

High Alarm Set Readout

The indicated value represents the oxygen percentage at which the high alarm will be activated. The high alarm set value is limited within 19-105% (Note that in certain conditions of excess pressure, the readout may show a value above 100%.) To set the high oxygen concentration alarm, see section 3.3.1.

DESCRIPTION - O2 Monitor

3.13.4 Alarm Conditions

HIGH O2 ALARM

The high O oxygen concentration is 1% above the setting. In this alarm condition, a red HIGH O ALARM LED will flash at a 0.5 second rate, accompanied by a high priority sound. To cancel this alarm, the high alarm setting must be equal to, or above the oxygen concentration.

LOW O

The low alarm is triggered when the oxygen concentration is 1% below the setting. In this alarm condition, a red LOW O ALARM LED will flash at a 0.5 second rate, accompanied by a high priority sound. To cancel this alarm, the low alarm setting must be equal to, or below the oxygen concentration.

2 MONITOR INOP (inoperative)

This alarm indicates when the oxygen monitor is in malfunction condition. It could be triggered by electronic components failure or software malfunction. In this alarm condition, a red O ALARM LED will flash at a 0.5 second rate, accompanied by a high priority sound. If this mode occurs you can reset the system by pressing the ALARM MUTE and LOW ALARM SET buttons simultaneously for 3 seconds.

2 alarm is triggered when the

2 ALARM

2 MONITOR

will fall very quickly to zero within two to three weeks of normal usage. See section 5 for sensor replacement.

NOTE

always remove from breathing circuit after use.

LOW BATTERY

To maintain maximum sensor life,

The low battery alarm indicates that the battery is disconnected or the battery voltage has dropped below acceptable limits. If the monitor is in use under battery power, and the battery voltage is less than 11.5 volts, a low priority alarm is triggered, to indicate that the battery has less than 20

minutes life left. If the battery voltage falls to less than 10.8 volts a flashing medium priority alarm is triggered to indicate there is less than 5 minutes power left in the battery. To cancel this alarm, mains power must be On.

NOTE

Penlon Service Centre, or Penlon Customer Service Department in the UK.

At the end of the final 5 minute warning period, the oxygen monitor will shut down, to prevent damage to the battery.

If this condition persists, contact your

MAINS FAILURE

This alarm indicates mains power failure or cut-off. The yellow MAINS FAILURE LED will illuminate, and a low priority sound will be triggered.

2 SENSOR FAULT

The alarm is triggered a) when either the oxygen sensor is disconnected or approaching the end of its life. b) if the the oxygen concentration exceeds 110%. In the alarm condition, a red O

2 SENSOR

ALARM LED will flash at a 0.5 second rate, accompanied by a high priority sound. To cancel this alarm, check the sensor connection or replace the sensor.

2 SENSOR LOW

This alarm indicates the sensor has approached the end of its life. The yellow O

2 SENSOR LOW LED will light

up, and a low priority sound will be triggered. The sensor must be replaced as the output

3.13.5 Alarm Mute

In an alarm condition, pressing the ALARM MUTE button will deactivate the alarm sounder but the alarm LED will continue to flash. The yellow MUTE ALARM LED will illuminate, accompanied with a SINGLE ‘beep’ sound.

The alarm mute can not be operated: a) until the mute time is over, or the alarm condition has been rectified. b) when the oxygen concentration drops below 18%.

In high priority and medium alarm conditions the alarm mute deactivates the sounder for 30 seconds and 120 seconds respectively.

DESCRIPTION - O2 Monitor

3.13.6 The MOX-3 Oxygen Sensor

The MOX-3 oxygen sensor offers quick response, linear output over the entire 0-100% oxygen range, and long service life.

The MOX-3 is a self-powered galvanic cell that generates current, and the current is proportional to the rate of oxygen consumption.

The cell has a highly stable output over its operating life. Significant output loss is only shown at the very end of its life. Typical sensor drift rates are less than 1% per month when the sensor is exposed to gas in typical applications. Sensor lifetime is governed by the mass of lead available to react with the oxygen and its rate of consumption. High oxygen partial pressure and high temperature will increase the sensor output current, thus shortening the operation life. Nevertheless, average sensor life will still exceed one year. At the point where all lead has been consumed, the output will fall very quickly to zero over a period of two to three weeks.

NOTE To maintain maximum sensor life, always remove from breathing circuit after use.

Typical Sensor Installation on Machine CGO

The sensor assembly consists of an external probe and 2 m (6 ft) cable and diverter on a standard 15 mm Tee adaptor. On machines with an A100 Absorber, the probe can also be mounted on the dome of the inspiratory valve (see section 5).

DESCRIPTION - O2 Monitor

3.13.7 Power Supply

Mains Power Supply

Power is fed to the machine via the mains lead to a switching mode power supply, and the oxygen monitor will be powered up by 14.2 v.

The monitor is controlled by the machine gas system master On/Off switch (see 3.13.2).

Back-up Battery

Should the electrical power supply to the machine fail, the emergency battery supply for the unit comes into action automatically.

This is indicated by the illuminated yellow ‘MAINS FAILURE’ LED alarm, accompanied with a ‘beep’ sound.

The battery is maintained in a fully charged state during normal use (i.e. the machine connected to the mains power supply). A fully charged battery will power the unit for a minimum of 60 minutes.

Low Priority Battery Low Alarm

When the battery is discharged, and the mains power supply is not restored, the ‘BATTERY LOW’ LED alarm will illuminate, accompanied with a low priority alarm sound.

Medium Priority Battery Low Alarm

When the battery is further discharged, and the mains power supply is not restored, the ‘BATTERY LOW’ LED will flash at a two second rate and a medium priority audible warning will be given when the minimum safe level of voltage is reached.

Low Battery Shut Down

WARNING When the battery voltage has fallen to the minimum safe level, the oxygen monitor will automatically shut down to avoid permanent damage to the battery.

Recharging the Battery

Charging of the back-up battery takes place automatically when the mains power supply is on, irrespective of the position of the machine gas system On/Off switch position.

NOTE The stated battery back-up period will only be available if the battery is kept fully charged. After the back-up power supply has been run down, the oxygen monitor will not function until the battery is in a fully charged state. An eight hours recharge will be necessary to bring the battery to full charge.

DESCRIPTION

3.14 A100 Absorber

In-board Mounting

The canister and valve block assemblies are mounted under the work surface and can be detached separately for cleaning (see section 7).

3.15 Prima SP Anaesthetic System - MRI Compatibility

The following Prima SP system components are MRI compatible:

Prima SP basic* machine *A 'basic' machine includes any variant of

Back Bar Flowmeter Bank Drawers Monitor Shelves Additional Gases

A100 Absorber (In-board and pole-mounted)

Nuffield 200 Ventilator

Delta Vaporizer

The following components are currently not MRI compatible:

Oxygen Monitor Flowmeter lighting Electrical power outlets AV-series ventilator

NOTE a) MRI Compatible Plastic Laryngoscopes -

see section 3.9 in the Price List.

b) The IDP Pressure Failure Alarm is MRI

compatible when used with appropriate batteries - see section 1.5.3 in the Price List.

4. SPECIFICATION

4.1 Physical Dimensions

Overall size: Height x Depth x Width (mm)

SP 101 1475 x 620 x 450 SP 102 1475 x 620 x 570

Work surface height: 890 mm Work surface size: 690/570/450 x 370 mm

Loading: 30 kg (66 lb) - evenly distributed.

Writing tablet: 300 x 220 mm

Loading: 10 kg (66 lb) - evenly distributed.

Top shelf: 690/570/450 x 370 mm

Loading: 30 kg (66 lb) - evenly distributed.

Mid shelf: 690/570/450 x 370 mm

Loading: 25 kg (55 lb) - evenly distributed

Drawers: 150 x 325 x 500 mm.

Loading: 10 kg (22 lb) evenly distributed

Castors: Front pair braked

Absorber posts: Swivels on a 254 mm radius around the left

hand side frame upright:

Height adjustment 300 to 760 mm Loading 30 kg (66 lb)

Ventilator bellows post Bushed to accept 25.4 mm (1 inch) or 22

mm (7/8 inch) poles.

Loading 30 kg (66 lb)

Gas scavenging fixing Dovetail clip on frame upright

Loading 30 kg (66 lb)

Common gas outlet: 22 mm male taper with coaxial 15 mm

female taper connections Safelock fitting

Weight:

SP 101 70 kg (154 lb) SP 102 75 kg (165 lb)

SPECIFICATION

4.2 Gas Supplies

Cylinders: Oxygen, nitrous oxide, air, and carbon dioxide

cylinder fittings can be specified to the maximum numbers given below. All cylinder yokes are pin-indexed

SP 101 Maximum of three SP 102 Maximum of four

Pipeline:

SP 101/102 Maximum of three (oxygen, nitrous oxide, air).

All to relevant national standards.

Medical gas colour codes:

Oxygen White* or Green Nitrous Oxide Blue Medical Air Black/White* or Yellow Carbon Dioxide Grey

*To comply with relevant national standards.

Internal pipework is diameter indexed for each gas

Oxygen: 8 mm Carbon Dioxide: 4 mm Nitrous Oxide 6 mm Air 5 mm

Mixed gas 10 mm

4.3 Flowmeters

Flow ranges:

Single flow tubes Oxygen: 0 - 10 L/min Nitrous Oxide: 0 - 10 L/min Air 0 - 10 L/min Carbon Dioxide 0 - 700 ml/min (flow limited to 500 ml/min)

Cascade flow tubes

Oxygen /Air /Nitrous Oxide (1) 0 - 1000 ml/min

(2) 0 - 10 L/min

SPECIFICATION

Flowmeter Accuracy

The accuracy of the flowmeter tubes is ± 2.5% of full scale reading

Flowmeter construction and dimensions

Tubes and floats are matched, and must not be interchanged. Flowmeter tubes have antistatic coatings.

Tubes are length indexed: Oxygen 260 mm (10.24 inch) Nitrous oxide 250 mm (9.84 inch) Other gases 240 mm (9.45 inch) (see 3.12)

Scale length 152 mm (6 in) minimum (all flow tubes except carbon dioxide)

4.4 Gas Pressures

USA/ UK

Canada/

Japan

Pipeline supplies 340 kPa 400 kPa

(50 psi) (60 psi)

Cylinder supplies 310 kPa 380 kPa

(45 psi) (55 psi)

Supply pressure variation ±10% ± 10%

Reduced pressure from regulator 310 kPa (at 5 L/min flow) (45 psi +2 psi / -5 psi) (55 psi +2 psi / -5 psi)

Regulator diaphragm 2800 kPa 2800 kPa bursting pressure (410 psi) (410 psi)

Reduced pressure system 510 kPa 610 kPa safety valve (75 psi) (90 psi)

Safety valve 39 kPa ±10% 39 kPa ±10% (to protect flowmeter, (5.4 psi) ±10% 5.4 psi ±10% vaporizer etc.)

Reduced pressure from secondary regulators(at 5 L/min flow)

Machines built from March 2002 onwards

Oxygen and Nitrous Oxide 152 - 241 kPa (22 - 35 psi) Air 241 - 276 kPa (35 - 41 psi)

Machines built before March 2002

All gases 207 - 283 kPa (30 - 41 psi)

+15 kPa / -35 kPa 370 kPa +15 kPa / -35 kPa

SPECIFICATION

4.5 Auxiliary Gas Outlets

Oxygen

Two self sealing connections on side frame upright Oxygen supply at pipeline pressure 340 kPa (50 psi)

Total flow rate: not less than 100 L/min to free air

80 L/min against 243 kPa (36 psi) resistance 70 L/min against 270 kPa (40 psi) resistance 50 L/min against 297 kPa (44 psi) resistance

Air

One self sealing connection on side frame upright.

4.6 Oxygen Failure Warning Devices

1. Gas system whistle

2. Visual indicator, direct pressure operated

4.7 Oxygen Flush

Button on CGO block The system supplies 35 - 75 L/min when fully depressed.

4.8 Mechanical AHD System

Minimum oxygen concentration 30% ±3% of total O2 + N2O flow

Oxygen basal flow

All models - up to March 2002

Oxygen basal flow 100-200 ml/min

Cascade flowmeter models - March 2002 onwards

Oxygen basal flow 50-75 ml/min

Single flowmeter models - March 2002 onwards

Oxygen basal flow 100-200 ml/min

Reduced pressure from secondary regulators See section 4.4

SPECIFICATION

4.9 Environmental

Operating Conditions Temperature

Storage and transport:

Basic machine -5 to 60oC (23 to 140oF) Oxygen monitor option -5 to 50oC (23 to 122oF)

Operating ambient +10 to 38oC (50 to 100oF)

Atmospheric pressure range 70 kPa to 106 kPa

Altitude 2438 m (8000 ft) maximum

Humidity 10 - 95% R.H. non-condensing.

MRI Compatibility See section 3.15

Cleaning Wipe external surfaces with dry or damp cloth.

Use mild soap, or disinfectant solution if necessary.

4.10 Third and Fourth Gas Options

4.10.1 Air

Air flowmeter range: 0 - 10 L/min.

Cascade low flow tube: 0 - 1000 ml/min

Cylinder yoke pin-indexed for medical air. Pipeline inlet for air. Cylinder contents gauge. Pipeline pressure gauge. Air pipework is colour coded at each junction.

4.10.2 Carbon Dioxide

Carbon dioxide flowmeter range: 20 - 700 ml/min (flow restricted to 500 ml/min). Cylinder yoke pin-indexed for carbon dioxide. Cylinder contents gauge

Carbon dioxide pipework is colour coded at each junction.

4.11 Electrical Supply (if fitted)

Standard: 5.5 amp, 220-240 v, 50 Hz

Optional: 6 amp, 110-120 v, 60 Hz

Permanently attached 3 metre lead, with stowage hooks for cable on rear of machine. Auxiliary electrical power outlets (if fitted):

SP102 4 outlets SP101 3 outlets

Max. total current 5 amp

Battery back-up (oxygen monitor): 12v, 1.8-1.9 AH, rechargeable sealed lead acid battery. Provides a minimum of 20 minutes operation.

SPECIFICATION - O2 Monitor

4.12 Oxygen Monitor

Measurement Range: 0-l00% Resolution: ±1% Accuracy and Linearity: ±2% of full scale (at constant temperature and pressure) Response Time: 90% of final value in approx. 10 seconds (air to 100% O

Operating Temperature: +10 to 38oC(50 to 100oF) Storage Temperature: -5°C to 50°C (23°F to 122°F ) Transport Temperature: -5°C to 50°C (23°F to 122°F ) Relative Humidity Range: 5%-95% (non-condensing)

Battery Back-up: See section 4.11 Sensor Type: MOX-3 galvanic fuel cell

High Priority Alarm: Flashing, 5 audio pulses with 6 seconds repeat time. Medium Priority Alarm: Flashing, 3 audio pulses with 24 seconds repeat time Low Priority Alarm: Static with single beep sound Alarm Mute: 30 seconds for high priority alarm

120 seconds for medium priority alarm Low Alarm Set Range: 18%-99% (+/- 1%) High Alarm Set Range: 19%-105% (+/- 1%)

Cable length: 2 m (6 ft), fully extended

Sensor

Type: Galvanic fuel cell sensor (0-100%) Life: One year minimum in typical applications

Interference Gases and Vapours (in 30% Oxygen, 70% Nitrous Oxide)

Interference Volume % Dry Interference in O2%

Nitrous Oxide 80% <1% Carbon Dioxide 5% <1% Halothane 5% <1% Enflurane 5% <1% lsoflurane 5% <1% Sevoflurane 5% <1%

Humidity Effects

Sensor output is relatively unaffected by prolonged operation in either high or very low relative humidity. If the sensor shows signs of being affected by condensation, dry the sensor with soft tissue.

CAUTION DO NOT use heat to dry the sensor.

SPECIFICATION - O2 Monitor

Oxygen Monitor - continued

Temperature Effects

The sensor has a built-in temperature compensation circuit, and is relatively unaffected by temperature changes within the operating temperature range given above.

Pressure Effects

The sensor measures O2 change (e.g. changes in barometric pressure, or breathing system pressure). An increase in pressure of 10% at the sensor inlet will produce a 10% increase in sensor output.

MRI Compatibility

The oxygen monitor system is not MRI compatible (see section 3.15 for additional information).

partial pressure, and its output will rise and fall due to pressure

5. PRE-USE CHECKS

5.1 Pre-use Checklist

A pre-use checklist for the Prima SP range of machines is printed on the next page.

This checklist is also supplied with the machine.

Where necessary, subsequent sections in this manual provide an explanation and procedure for setting up the machine and ancillary equipment and the various checks that must be carried out before clinical use.

In addition, checks specific to non-AHD machines, and mechanical AHD machines are explained in separate sub-sections:

5.2 Non-AHD machines

5.3 Machines with mechanical AHD

Details of checks common to ALL types of machine (e.g. Check correct connection and functioning of vaporizers) are explained in sections 5.4 onwards.

WARNING

Pre-use checks must be performed before each period of clinical use. These checks must be supplemented by periodic Function Testing, and full Service Testing by a Penlon-trained engineer to the Service Schedule given in the Prima SP Service Manual.

These checks will not in themselves ensure the safe use of the apparatus, which remains the responsibility of the qualified practitioner in charge of it.

PRE-USE CHECKS

PRE-USE CHECKLIST

The machine must be carefully inspected and checked as follows.

An incorrectly functioning machine must be repaired by a suitably qualified person before use.

1. Check for visible damage, machine stability, and condition of gas

supply hoses.

2. Check for labelling which may indicate status of machine, including

faults or recent servicing.

3. Check correct connection of electrical supply.

4. Check correct connections of gas supplies.

5. Check adequate pipeline supply and back-up cylinder supply.

6. Switch on gas delivery switch, and note special operating system:

Check functioning of flowmeters. Check function of Mechanical AHD. Check function of Air/N

7. Check correct connection and functioning of the vaporizers.

8. Check functioning of oxygen flush.

9. Check leak rate of low pressure gas system.

10. Check the integrity of the patient circuit.

11. Test the alarm system.

2O interlock switch.

Refer to Section 5 in the User Manual for further information.

Ancillary equipment

12. Check operation of the AGSS.

13. Check functioning of ventilator, including disconnect alarm.

14. Check that the oxygen analyser and other patient monitoring

equipment functions correctly.

Refer to the relevant user manual for further information.

PRE-USE CHECKS - (Non-AHD Machines)

5.2 Pre-use Checks - Gas Supply

(Non-AHD Machines)

5.2.1 Gas Pipeline Supplies

1. Connect the oxygen pipeline hose only.

Check that the warning whistle sounds briefly when the hose is connected. Check that the correct pressure gauge reading is obtained.

2. Switch the Gas Delivery Switch (A) to ON.

On machines with Air, set the Air/N

2O.

N Open the oxygen and nitrous oxide flowmeter needle valves. Check that flow is only shown in the oxygen flowmeter.

3. Close the flowmeter valves.

4. Connect the other pipeline hoses in turn.

Check the gauge reading for each gas. For Air, set the interlock switch (B) to Air,

2O interlock switch (B) to

5.2.2 Gas Cylinder Supplies

CAUTION

Open the cylinder valves slowly to avoid damage to the pressure reducing valve and pressure gauges. Ensure that valves are at least one full turn open when in use.

1. Fit the gas cylinders to their respective yokes, open the

cylinder valves one at a time. Check the contents on each pressure gauge.

NOTE

A) When two cylinders are provided for a single gas, test each separately, clearing pressure after each test by opening the flowmeter valve.

B) Turn off the reserve cylinders during normal use.

2. Open the cylinder valve of the third and fourth gas cylinders (if

fitted). Check the reading on the pressure gauge for each gas.

3. Ensure that all flowmeters are kept closed until gas supplies

are required.

5.2.3 Flowmeters

1. Operate each flowmeter control knob in turn.

Check that the full scale of flow can be obtained and that the floats in all tubes move freely and rotate when at a steady flow. On machines with Air, use the interlock switch (B) to select Air

2O in turn.

and N Check the supply for each gas.

2. Check that the flow can be turned off by gentle rotation of the

knob and that the floats reseat on the bottom stop.

3. On machines with optional dual cascade flow tubes, check

that gas flow is through the low flow tube initially, then through the high flow tube.

PRE-USE CHECKS - All models

5.2.4 Air/N2O Interlock

(machines with Air supply option)

1. Switch the Gas Delivery Switch (A) to ON.

2. Set the Air/N

3. Open the Air flowmeter control and check that

Air is delivered.

4. On machines with mechanical AHD, turn on the

oxygen supply at the flowmeter.

5. Open the N

6. Check that N2O is NOT delivered.

7 Set the Air/N2O Interlock switch to N2O.

8. Check that the flow of Air has stopped.

9. Check that N

2O Interlock switch (B) to Air.

2O flowmeter control.

2O is now delivered.

For additional checks on non-AHD machines, see sections 5.4 onwards

PRE-USE CHECKS - Machines with Mechanical AHD

5.3 Pre-use Checks - Gas Supply

(Machines with Mechanical AHD)

5.3.2 Gas Pipeline Supplies - Machines

1. Connect the oxygen pipeline hose only.

2. Turn on the Gas Delivery switch (A).

3. Open both oxygen and nitrous oxide flowmeter

4. Close both valves.

5. Connect the other pipeline hoses.

with Mechanical AHD

Check that the correct pressure gauge reading is obtained.

Check that the warning whistle sounds briefly. Check that a basal flow of oxygen is delivered, as follows:

All models - up to March 2002 100-200 ml/min

Cascade O2 flowmeter

- March 2002 onwards 50-75 ml/min

Single O

- March 2002 onwards 100-200 ml/min

valves. On machines with Air, set the Air/N switch (B) to N2O. Check that flow is only shown in the oxygen flowmeter.

Turn off the Gas Delivery switch. Check that the warning whistle sounds briefly, and that the oxygen basal flow is stopped.

Check the gauge reading for those gases.

2 flowmeter

2O interlock

CAUTION

On machines fitted with a mechanical AHD, the oxygen flowmeter control is restricted to prevent the needle valve from fully closing. This ensures a minimum oxygen basal flow. DO NOT attempt to close the flow to zero. Do not overtighten the knob.

5.3.3 Gas Cylinder Supplies

CAUTION

Open the cylinder valves slowly to avoid damage to the pressure reducing valve and pressure gauges. Ensure that valves are at least one full turn open when in use.

1. Fit the gas cylinders to their respective yokes,

open the cylinder valves one at a time and check the contents on each pressure gauge.

NOTE A) When two cylinders are provided for a single gas, test each separately, clearing pressure after each test by opening the flowmeter valve. B) Turn off the reserve cylinders during normal use.

2. Check the third and fourth gas cylinders (if fitted),

open the cylinder valve and check the contents on the pressure gauge.

3. Ensure that all flowmeters are kept closed until gas

supplies are required.

PRE-USE CHECKS - Machines with Mechanical AHD

5.3.4 Flowmeter - Machines with

Mechanical AHD

1. Turn on the Gas Delivery switch (A) .

Check that the warning whistle sounds briefly. Check that a basal flow of oxygen is delivered, as follows:

All models - up to March 2002 100-200 ml/min

Cascade O2 flowmeter

- March 2002 onwards 50-75 ml/min

Single O

- March 2002 onwards 100-200 ml/min

2. On machines with Air, set the Interlock switch

(B) to N2O.

3. Open the nitrous oxide needle valve and check that

there is no nitrous oxide flow.

4. Operate the oxygen flowmeter needle valve.

Check that full scale of flow of oxygen and nitrous oxide can be achieved, and that the floats in both tubes move freely and rotate when at a steady flow.

5. Check that the nitrous oxide flow can be turned off

by gentle rotation of the oxygen knob. Check also that the nitrous oxide float reseats on the bottom stop, and that the oxygen basal flow resets to 150 ml/min.

6. Operate the other control knobs in turn to check:

the full scale of flow can be obtained; the floats move freely and rotate at a steady flow; the flow can be turned off by gentle rotation of the knob; and that the floats reseat on the bottom stop.

2 flowmeter

7. On machines with Air, set the interlock switch (B) to

Air, to check the supply for this gas.

8. On machines with optional dual cascade flow

tubes, check that gas flow is through the low flow tube initially until full flow is achieved, then through the high flow tube.

For additional checks on machines with mechanical AHD, see sections 5.4 onwards.

PRE-USE CHECKS - All models

5.4 Leak Rate Check - Low

Pressure Gas System

1. Attach a side branch connector to the fresh

gas outlet on the CGO block outlet. Connect the side branch tube to a manometer.

2. Set a flow of 100 ml/min of oxygen.

Block the open port of the connector with a finger. The pressure in the low pressure gas system will rise and be displayed on the manometer.

3. Check that the pressure rises to at least

100 mmHg. Release the finger seal immediately the pressure is reached.

CAUTION

Do not maintain closure of the open port longer than necessary to perform the test. This test should be performed with each vaporizer in turn set to 1%.

NOTE

This test is equivalent to, or more severe than the leakage rates quoted in national standards.

5.5 Electrical Supply

(if fitted)

1. Connect the machine power lead to a

suitable mains supply socket.

2. Set the switch (A) to On.

Check for correct function of all electrical equipment powered by the auxiliary power outlets on the rear of the machine.

3. Machines with optional O

Check for correct fitment of the mains lead (B) into the rear of the monitor unit. Switch the Gas Delivery Switch (C) to On. Check that the monitor control panel LEDs activate.

2 Monitor:

O2 Monitor

PRE-USE CHECKS - All models

5.6 Patient Breathing System

5.6.1 Hose Connections

Check that all hoses are correctly connected, as shown in the illustrations on the next page.

5.6.2 A100 Absorber

Always follow the pre-use check procedures given in the instruction manual supplied with the absorber.

The use of an oxygen monitor (and a carbon dioxide analyser) is highly recommended when using any partial rebreathing anaesthetic system.

In-board A100 Absorber

Check the level of liquid in the condensate collection system bottle (1).

WARNING

The condensate may be caustic: a) Avoid skin contact. b) Dilute the liquid with water before disposal. c) Wear protective gloves if the bottle is full.

Carefully unscrew the bottle and dispose of the contents.

5.6.3 Breathing System Hose, Reservoir

Bag, Ventilator

Connectors for the Inspiratory hose (A) and Expiratory hose (B), and the reservoir bag connector (C) are 22 mm male. All connectors comply with ISO 5356/1.

The ventilator connection point (D) is also 22 mm male.

Hose and bag connections are fitted with Penlon Safelock high security fittings.

Check all connections for gas tightness.

5.6.4 Fresh Gas Supply

The fresh gas hose assembly (E) supplied with the machine has a Penlon connector at the absorber inlet and a 22 mm Safelock taper at the other end. This should be connected to the common gas outlet (F) of the anaesthetic machine.

Check all connections for gas tightness.

In-board A100 Absorber and AV900 Ventilator Bellows

(AV900 Control Unit mounted on side bracket or shelf)

For spirometer and pressure monitor connections, refer to AV900 User Manual.

AV900 Control Unit

CGO Block

A100 Canister

In-board A100 Absorber AV900 Ventilator and Bellows Unit mounted on side bracket or shelf

AV900 Bellows

AV900

For spirometer and pressure monitor connections, refer to AV900 User Manual.

A100 Valve Block

CGO Block

A100 Canister

A100 Valve Block

PRE-USE CHECKS - All models

AV900 VENTILATOR

Breathing System Connections

EXHAUST TO SCAVENGE SYSTEM

VENTILATOR DRIVE GAS

(REAR VIEW)

(AV900 with built-in monitor)

O2 MONITOR SENSOR LINE

PRESSURE MONITOR LINE

Monitor mounted on

anaesthetic machine

ANAESTHETIC MACHINE CGO

O2 MONITOR REAR PANEL

FRESH

GAS

SUPPLY

DRIVE GAS

(FROM MACHINE AUXILIARY OUTLET)

HEAT AND MOISTURE EXCHANGER (HME)

PATIENT

SPIRO LINES

CIRCLE

SYSTEM

ABSORBER

Breathing Circuit Connections

A Inspiratory Hose F CGO B Expiratory Hose G APL Valve C Reservoir bag connector H Spirometer D Ventilator Connection J Bacterial Filter E Fresh Gas Hose K HME (heat and moisture exchanger)

(connection at rear of absorber)

Note

1. To protect the expiratory limb of the breathing circuit, and the spirometer (H), use a breathing circuit bacterial filter (J), or a heat and moisture exchanger (K) at the patient Y-piece.

2. Follow the instructions in the relevant user manual for connection to analysers and monitors.

PRE-USE CHECKS - All models

5.6.5 Breathing System Pre-use Test

Connect the CGO block outlet on the machine to the fresh gas inlet of the breathing system.

NOTE This machine must be fitted with a breathing system complying with approved design parameters, at the selection of the qualified practitioner.

The breathing system components do not constitute part of the machine but connections between the machine and breathing system should be verified as follows:

1. Occlude the adjustable pressure limiting (APL) valve (if fitted), and the patient connection port . Press the oxygen flush valve button briefly. Check that the reservoir bag inflates. If the system includes a manometer, inflate the bag to approximately 40 cmH

2O.

2. Release the oxygen flush valve. Check that the pressure is maintained in the system with less than 200 ml/min fresh gas delivered into the breathing system, showing that no leaks are present.

PRE-USE CHECKS

5.7 Oxygen Flush

Check that oxygen flows through the CGO outlet when the flush valve button is pressed and that the flow ceases when the button is released.

This is most conveniently done after the breathing system has been attached, using the reservoir bag as an indicator of gas flow.

5.8 Anaesthetic Gas

Scavenge System (AGSS)

By inspection, check that all sources of expired anaesthetic gases, e.g. the absorber APL valve, and the ventilator bellows patient gas exhaust port, are connected to an approved collection system leading to an AGSS.

WARNING

Vacuum systems must not be connected directly to the APL valve on the absorber. A receiving system with a positive and negative pressure control function must be interposed. Systems must comply with standard ISO 8835 part 2.

PRE-USE CHECKS

5.9 Alarm System Testing

WARNING

The anaesthetic machine must not be used if any alarm is not functioning correctly.

Primary Oxygen Failure Alarm

The machine is fitted with a warning whistle and a visual indicator (A). These components act as oxygen supply failure devices and constitute the primary alarm system, powered only by the residual oxygen supply, as described in section 3. The system can be checked whenever the low pressure oxygen system is first pressurised by turning on a cylinder or connecting a pipeline. a) The whistle will sound briefly as pressure increases, and b) The visual indicator (A) will turn from red to green.

Whistle, Visual Indicator, and Gas Cut-off Device Test

A formal test (including the action of the internal gas cutoff device) is performed as follows:

1. Connect both oxygen and nitrous oxide supplies.

2. Set the Gas Delivery switch (B) to ON, and check that the warning whistle sounds briefly.

3. On machines with Air, set the Interlock switch (C)

2O.

to N

4. Set a flow of 2 L/min on both flowmeters. (set a flow of CO

5. Disconnect the oxygen supply at the wall socket or close the oxygen cylinder valve and check: a) that as the oxygen flow slows down the whistle starts to sound when the flow rate has fallen from 2 L/min to 1.2 L/min +/- 0.2 L/min. b) that the whistle continues for at least 7 seconds. c) that the flow of nitrous oxide (and carbon dioxide if fitted) is cut off completely before the oxygen flowmeter shows zero flow. d) that the visual indicator (A) turns red before the

oxygen flow is entirely stopped.

NOTE All gases must be included in the preoperative check..

6. Reinstate the oxygen supply. Check that all gas flows are reinstated, and that the visual indicator turns green again.

2 also, if this gas is provided).

Oxygen Monitor (if fitted)

See section 5.12.

PRE-USE CHECKS

5.10 Vaporizers

Always follow the procedures and checklist given in the instruction manual supplied with the vaporizer, particularly when filling the vaporizer with anaesthetic agent.

WARNING

Vaporizers must always be mounted, never used free-standing. Free standing vaporizers may be accidentally tipped resulting in excessive and uncalibrated volumes of anaesthetic drug entering the breathing system.

Vaporizers of any description must not be installed or connected between the Common Gas Outlet and the breathing system unless they are specifically designed for such use. (If this is done, the oxygen flush flow will pass through the vaporizer, and severe overdosage may result).

5.10.1 Selectatec Type Mounting

System

Dependent on choice of backbar manifold system, up to two Selectatec compatible vaporizers may be fitted. To install the vaporizer, carefully offer the vaporizer up to the manifold. Check that the gas connection ports on the vaporizer are aligned with the valves on the manifold. Carefully lower the vaporizer onto the manifold and lock the vaporizer into position by clockwise rotation of the locking lever through 90o.

5.10.2 Selectatec Compatible Vaporizers with Interlock

WARNING

nly vaporizers with the Selectatec

compatible interlock function will interlock if installed on the manifold

The installation of non-interlock vaporizers allows the possible operation of more than one vaporizer at the same time.

Check that the interlock mechanisms of all the vaporizers on the manifold are working correctly, i.e. that only one vaporizer at a time can be turned on.

5.10.3 Cagemount Vaporizer

Note that some international standards demand that this type of vaporizer should only be used on machines with a single mounting station. In addition, use safety clip (Catalogue No.

52275) to retain the cagemount taper cones

in position on the vaporizer.

5.10.4 Pre-use Checks (All Vaporizers)

Before use:

1. Check all joints for gas tightness.

2. Check vaporizer agent level.

3. Check for correct anaesthetic agent

delivery concentrations - use an agent analyser.

Always follow the pre-use check procedures given in the instruction manual supplied with the vaporizer.

NOTE Do not use excessive force to lock the vaporizer onto the manifold. Damage to the locking fastener will result.

CAUTION

To prevent damage to the locking shaft, ensure that the gas connection ports are aligned with the valves on the manifold, and are correctly engaged, before tightening the locking lever.

5.11 Ventilator (if fitted)

Always follow the pre-use check procedures given in the instruction manual supplied with the ventilator.

Check all hose and tubing connections for gas tightness.

PRE-USE CHECKS - Oxygen Monitor

5.12 Oxygen Monitor

The pre-use checks for the oxygen monitor include a set-up and calibration procedure.

5.12.1 Sampling Tee

Check that the monitor system sampling tee is correctly attached at the CGO hose connector (1), a) using a 22 mm taper and Safelock nut,

b) using a 22 mm male/female tee fitting

of suitable design.

The probe can also be mounted on the dome of the absorber inspiratory valve (2).

Check that the system interface lead (3) is correctly fitted at the rear of the monitor unit

5.12.2 System Set-up

Switch on the oxygen monitor using the Gas Delivery switch (4) on the front panel.

NOTE

The Gas Delivery switch must be in the On position for gas delivery from the anaesthetic machine, and to supply electrical power to the oxygen monitor.

Check that the display LEDs (5) and the alarm indicators (6) are lit for two seconds, and that the audible alarm sounds.

5.12.3 Calibration

The new unit must be calibrated before clinical use.

Thereafter, we recommend calibration every time the system is switched on, as a safety precaution.

Calibration must also be performed: A) when the sensor is replaced, or B) when point-of-use elevation changes by more than 160 m (500 ft).

We recommend calibration with a 100% oxygen standard source, at a pressure and flow similar to your application.

Calibration at lower concentrations or with room air is possible, but less desirable.

PRE-USE CHECKS - Oxygen Monitor

5.12.4 Calibration Procedure Using 100% Oxygen

1. Switch on the oxygen monitor using

the Gas Delivery switch on the machine front panel. The LEDs (1, 2, 3) and alarm visual indicators (4 and 5) will illuminate, and the audible alarm will sound.

2. Ensure the oxygen sensor is mounted

correctly at the CGO hose connector see section 5.13.1. All vaporizers must be OFF.

3. Flush 100% oxygen through the CGO

and maintain the flow through the total breathing circuit for approximately 20 seconds.

4. Allow the oxygen reading to stabilise.

This will take at least 30 seconds.

5. Press the CAL button (6) to enable

sensor calibration mode. The O flash, and a single ‘beep’ warning will sound.

2 Concentration LED (1) will

6. Turn the SET/CAL knob (7) until the display shows 100%.

7. When value is set, press the CAL button (6) again to accept the calibration setting.

2 concentration display LED (1)

The O will now stop flashing (and a single ‘beep’ warning will sound), The display will return to normal operation.

Sensor Low Indication

The unit has a self detect feature to indicate when the sensor life is low. During calibration, if the O alarm LED (8) illuminates (and a single ‘beep’ warning sounds) this indicates that the sensor must be replaced.

Sensor output will fall very quickly to zero over a period of two to three weeks from the first time that the alarm is activated.

2 SENSOR LOW

PRE-USE CHECKS - Oxygen Monitor

5.12.5 Calibration Procedure Using Room Air

NOTE Calibration in room air may not provide as great an accuracy as calibration carried out in 100% oxygen.

1. Switch on the oxygen monitor using

the Gas Delivery switch on the machine front panel. The LEDs (1, 2, 3) and alarm visual indicators (4 and 5) will illuminate, and the audible alarm will sound.

2. Remove the sensor from the

anaesthetic machine, gently move it through the air to allow room air to circulate for 20 seconds.

3. Allow the O

(1) to stabilise. This will take at least 30 seconds.

4. Press the CAL button (6) to enable

sensor calibration mode. The O2 CONC LED (1) will flash, and a single ‘beep’ warning will sound.

2 Concentration reading

5. Turn the SET/CAL knob (7) until the display shows 21%.

6. When value is set, press the CAL button (6) again to accept calibration setting. The display LED (1) will now stop flashing and a single ‘beep’ warning will sound. The display will return to normal operation.

Sensor Low Indication

Sensor output will fall very quickly to zero over a period of two to three weeks from the first time that the alarm is activated.

2 SENSOR LOW

5.12.6 Set Alarms

Set High Alarm

The high alarm value cannot be set below 19%, or above 105%.

PRE-USE CHECKS - Oxygen Monitor

5.12.6 Set Alarms

Set High Alarm

The high alarm value cannot be set below 19%, or above 105%. (Note that in certain conditions of excess pressure, the readout may show a value above 100%.).

1. Press the HIGH ALARM SET button (1) to enable high alarm set mode. The HIGH ALARM LED (2) will flash, and a single ‘beep’ warning will sound.

2. Turn the adjacent ‘SET’ knob (3) to the desired setting.

3. Press HIGH ALARM SET button (1) again. The unit will then exit the high alarm set mode. The LED display (2) will now stop flashing, and a single ‘beep’ warning will sound.

Set Low Alarm

The low alarm value cannot be set lower than 18%, or above 99%.

1. Press the LOW ALARM SET button (4) to enable low alarm set mode. The LOW ALARM display (5) will flash, and a single ‘beep’ warning will sound.

2. Turn the adjacent SET/CAL knob (6) to desired setting.

3. Press LOW ALARM SET button (4) again. The unit will exit low alarm set mode. The LED display will now stop flashing, and a single ‘beep’ warning will sound.

6. FUNCTION TEST

6.1 Introduction

Every Prima anaesthetic machine is tested thoroughly before leaving the factory, but it is essential to undertake a complete performance check as described in this section before the machine is first used clinically. This can be done initially by a Penlon trained engineer as part of the commissioning of a new machine. Subsequently, this function testing should be repeated at regular intervals.

Full function testing should be carried out, at six month intervals, by a Penlon trained engineer or other persons certificated by Penlon Limited. Procedures for machine servicing are described in subsequent sections in this Service Manual.

Read the procedure carefully before carrying out each test, noting references to machine specifications and equipment.

Perform these tests in sequence.

Safety Precautions

WARNING

Before commencing any test work ensure that all vaporizers are in the "Off" position. Note that the OFF position may be indicated on the vaporizer as a 0 (zero). Refer to the vaporizer instruction manual.

WARNING

During any test procedure the release of Nitrous Oxide or anaesthetic vapours into the working environment must be controlled. Connect the machine to an approved anaesthetic gas scavenging system (AGSS).

WARNING

Do not contaminate pipeline connections, cylinder yokes, regulators or pressure gauges with oil or grease, or any other flammable lubricant or sealant.

Mechanical AHD

Function tests specific to non-AHD, and Mechanical AHD systems are detailed separately. Note that these sections have special page headings

Equipment Required

No complex test equipment is required for the series of tests described below.

Leak tests

Apply a Leak Test Spray or a diluted solution of soap in water to the suspect connector, and check for a stream of bubbles at the joint.

Flow rates

Check with a respirometer.

Electrical circuits

Check with a multi-meter.

Pressure

Check with a manometer.

FUNCTION TEST

6.2 Machine Frame

1. Check the main structure of the machine is firmly assembled, free from obvious distortion and damage and that all attachments are secure.

2. Check that the castor wheels are securely attached to the machine frame and that the wheels run and swivel freely. Check that the wheel locking mechanism is working.

3. Check the drawer unit(s) (where fitted) open and close smoothly.

4. Check that the writing tablet opens and closes smoothly.

6.3 Electrical Safety Tests

1. Disconnect the mains lead from the electrical supply.

2. Disconnect all equipment from the auxiliary power outlet panel (A).

3. Perform Electrical Safety Tests as specified by the National Standards applicable to your country.

FUNCTION TEST

6.4 Pipeline Gas Supply and Non-Return Valve

1. Ensure that all reserve gas cylinders are turned off, and removed from the machine.

2. Leave the Gas Delivery ON/OFF switch in the "OFF" Position.

3. Check ALL Pipeline Hose assemblies for correct probes, colour coding, and attachment to the machine.

4. Inspect ALL Pipeline hoses for cracks, and check that all clips and connections are secure.

5. Connect the Oxygen Supply to the anaesthetic machine using the pipeline hose.

6. Check that the oxygen pipeline pressure gauge indicates the correct pipeline pressure.

7. Check the security of the Oxygen Hose connections by tug-testing the hose (A). Perform this test at both ends of the hose by tugging gently whilst grasping the hose between thumb and forefinger. Firm leak free joints should be maintained, without any relative movement of the spigot, ferrule or hose. Note: Renew all faulty hose assemblies.

8. Test for leaks from each hose by brushing leak detecting fluid generously about both end fittings. Test the Pipeline Non-return Valve (NRV) by brushing leak detecting fluid over the hole in the centre of the Oxygen Cylinder Yoke Bodok Seal (B).

Leaks will be indicated by bubbling of the fluid.

9. Dry with paper towel, fix any leaks (replace hose/NRV if necessary).

10. Leave the Oxygen Hose connected to prevent the cutoff unit operating.

11. Connect the Nitrous Oxide Supply to the anaesthetic machine using the pipeline hose.

Repeat tests 5, to 9 for this gas.

12. Connect the Air Supply to the anaesthetic machine using the pipeline hose. Repeat tests 5 to 9 for this gas.

13. Operate the Oxygen Flush and check that the delivered flow rate from the Common Gas Outlet (CGO) is between 35-70 Litres Minute. Fit a respirometer (or other flow rate measuring device) to the CGO and measure the delivered volume in a one minute period.

FUNCTION TEST

6.5 Cylinder Gas Supply And Pressure Reducing Valves.

CAUTION

This machine is fitted with an hypoxia guard known as a Mechanical Anti Hypoxic Device (MAHD). This device prevents the delivery of hypoxic mixtures to the patient and must only be adjusted by a Penlon-trained Engineer or other persons certificated to do so by Penlon Limited. Incorrect adjustment of the MAHD could result in the failure of this device and the loss of hypoxia protection.

The oxygen control is restricted to prevent the needle valve from fully closing. This ensures a minimum flow of oxygen at all times while the machine is switched on.

This small flow of oxygen is known as the Basal Flow. DO NOT attempt to fully close the oxygen flow to zero. DO NOT overtighten Flow Control knobs for the other gases as this will reduce the life of the needle valves.

1. Ensure that all flowmeter control valves are shut. Disconnect all the pipeline gas supplies.

2. Remove all gas cylinders.

3. Check each cylinder yoke for security of attachment, and free movement of the clamp bar (A) and clamp screw (B). Check Pin Index system pins (C) are secure and undamaged.

4. Check that a Bodok seal (D) is in place and undamaged, in each cylinder yoke.

5. Attach each gas cylinder to its appropriate yoke, ensuring full engagement of the "Pin Index" system. Note: Use full bottles only.

6. Turn on the Oxygen Cylinder. Check that the Cylinder pressure is indicated on the Oxygen Cylinder pressure gauge in a smooth sweeping movement. Check that all other gauges indicate zero pressure. Check that there is no flow of gas indicated on the Oxygen flow tube.

FUNCTION TEST

7. Turn on the Gas Delivery Switch (E). Check that the warning whistle sounds briefly. Check that a basal flow of oxygen is delivered, as follows:

All models 100-200 ml/min (up to March 2002)

Cascade O (March 2002 onwards0

2 flowmeter 50-75 ml/min

Single O (March 2002 onwards)

2 flowmeter 100-200 ml/min

Leak Tests

Note: When performing the following Leak

Tests, allow a minimum 2 minute period for each test.

8. Turn OFF the Gas Delivery Switch (E).

9. Turn the Oxygen Cylinder OFF.

10. Observe the pressure gauge reading; a leak will be indicated by the needle pointer falling towards zero.

11. Turn the Oxygen Cylinder ON.

12. Turn the Gas Delivery Switch (E) ON (warning whistle will sound briefly).

13. Check that all flow control valves are in the OFF position and that the only flow indicated is the Oxygen Basal Flow.

14. Switch the Nitrous Oxide / Air Control (F) to select Nitrous Oxide.

15. Turn the Nitrous Oxide Cylinder ON. Check that the Nitrous Oxide pressure gauge responds in a smooth sweeping movement Check that the only Gauges indicating pressure are those for Oxygen and Nitrous Oxide

Check again that the only indicated flow is the Oxygen Basal Flow.

16. Turn The Nitrous Oxide Cylinder OFF.

17. Observe the pressure gauge reading; a leak will be indicated by the needle pointer falling towards zero.

19. Turn the Nitrous Oxide / Air Control Switch (F) to select Air.

20. Turn the Air Cylinder ON. Check that the Air pressure gauge responds in a smooth sweeping movement. Check that the only Gauges indicating pressure are those for Oxygen, Nitrous Oxide and Air.

Check again that the only indicated flow is the Oxygen Basal Flow.

21. Turn the Air Cylinder OFF.

22. Observe the pressure gauge reading; a leak will be indicated by the needle pointer falling towards zero.

23. Turn the Air Cylinder ON.

24. If Carbon Dioxide (CO2) Cylinder supply is fitted - turn CO2 Cylinder ON. Check that the CO2 pressure gauge responds in a smooth sweeping movement. Check that ALL cylinder pressure gauges are indicating pressure.

Check again that the only indicated flow is the Oxygen Basal Flow.

25. Turn the CO2 cylinder OFF.

26. Observe the pressure gauge reading; a leak will be indicated by the needle pointer falling towards zero.

18. Turn the Nitrous Oxide Cylinder ON.

27. Turn the CO2 Cylinder ON.

FUNCTION TEST

6.6 Flowmeter Unit, Nitrous Oxide / Air Selection Switch,

Oxygen Fail Cut-off and Warning

1. Visually inspect the flowmeter tubes for damage. Check that the transparent shield is in place.

2. Turn the Gas Delivery Switch (A) to ON. Check that a basal flow of oxygen is delivered, as follows:

All models 100-200 ml/min (up to March 2002)

Cascade O (March 2002 onwards)

Single O (March 2002 onwards)

3. Open the Oxygen Flowmeter control slowly. Check that a full flow can be obtained.

4. Set a flow rate of 6 L/min Check that the float is stable in its setting and spins freely. Repeat test at a flow rate of 500 ml/min.

5. Without rotating the control knob, check for wear by gently pulling on the knob, and check that any fluctuation in flow rate is within the range of ±100 ml/min.

6. Close the Oxygen Flowmeter control valve gently until the mechanical stop engages.

7. Check Oxygen Basal Flow (see operation 2).

8. Nitrous Oxide / Oxygen Linkage Switch the Nitrous Oxide / Air control (B) to select Nitrous Oxide

9. Fully open the Nitrous Oxide Flow control and check that

flow is indicated on the flow tube.

2 flowmeter 50-75 ml/min

2 flowmeter 100-200 ml/min

10. Slowly open the Oxygen Flowmeter control and check that the Nitrous Oxide flow tube float rises. Pause briefly at an indicated Nitrous Oxide flow of 4 L/min. Check that the Nitrous Oxide flow tube float is stable in its setting and spins freely. Increase the Oxygen flow until maximum flow of Nitrous Oxide has been achieved.

11. Close the Oxygen Flowmeter control valve gently. Pause briefly when Nitrous Oxide flow indicates 500 ml/min. Check the stability of the Nitrous Oxide float and that it spins freely. Decrease the Oxygen flow until the mechanical stop engages.

FUNCTION TEST

Check that as the Oxygen flow rate is reduced, so is the flow of Nitrous Oxide. Check again that the only flow indicated is the Oxygen Basal Flow.

12. Close the Nitrous Oxide Flowmeter.

13. Nitrous Oxide / Air Selection Switch

(machines with Air supply fitted).

Switch the Nitrous Oxide / Air Control (B) to select Air.

14. Open the Air Flowmeter slowly and see that a full flow can be obtained.

15. Set an Air flow of 5 L/min and check that the Air flow tube float is rotating and stable.

16. Close the Air Flowmeter gently until no gas flows.

17. Carbon Dioxide Supply ( if fitted) Open the Carbon Dioxide flow and check that the maximum flow rate available is 600 ml/min.

18. Check that the float is stable and that it spins within the glass flow tube.

19. Close the Carbon Dioxide Flowmeter gently until no gas flows.

20. Set the following flow rates:

Oxygen: 5 L/min N

2O: 5 L/min

Air: 5 L/min.

21. Check that the only flows indicated are that of Oxygen and Air and that Nitrous Oxide Float indicates a flow of zero.

22. Switch the Nitrous Oxide / Air Control (B ) to select Nitrous Oxide.

23. Observe that the Air supply is cut off and that of Nitrous Oxide is reinstated. Check that flow tubes now indicate flows of Oxygen and Nitrous Oxide while the Air float has dropped to zero.

Oxygen Fail Cut-off

24. Turn on Carbon Dioxide (if fitted) to 500 ml/min.

25. Turn Off the Oxygen Cylinder and observe that the Oxygen Cylinder pressure gauge indicates falling Oxygen pressure.

26. Check that the warning whistle (Oxygen Fail Alarm) sounds before the supply of oxygen is exhausted from the anaesthetic machine and that its duration is a minimum of 7 seconds.

27. Check that before the supply of Oxygen is exhausted from the anaesthetic machine, that Nitrous Oxide and Carbon Dioxide flows are cut off automatically by the Oxygen Fail System.

28. Oxygen Fail Warning Check that before the supply of Oxygen is fully exhausted, that the visual indicator (C) has turned fully red.

29. Turn OFF all Flowmeters and turn ON the Oxygen cylinder so that only the Oxygen Basal Flow is indicated.

30. Check that the visual indicator (C) is showing fully green.

FUNCTION TEST

6.7 Gas Safety Devices - Mechanical AHD

1. Fully open the Nitrous Oxide Flowmeter and check that O flow tube.

there is no flow of gas indicated on the N

2. Fit an Oxygen Analyser to the output of the Common

Gas Outlet. Refer to the table below, and check % Oxygen concentration at the oxygen flows specified .

Adjust the Oxygen Flowmeter control only - Do NOT adjust the N

Note The flow rates for N2O are given as a guide only.

O2 Flow %O2 (in O2/N2O mixture) N2O Flow

*0.25 L/min 27 - 33 % 0.5 - 0.67 *0.5 L/min 27 - 33 % 1.0 - 1.35

0.8 L/min 27 - 33 % 1.6 - 2.1

1.5 L/min 27 - 33 % 3.0 - 4.1

3.0 L/min 27 - 33 % 6.1 - 8.1

2O flowmeter.

*Cascade flowmeter models - March 2002 onwards

3. Turn OFF the Gas Delivery Switch.

Check that both gas flows are stopped.

4. Turn ON the Gas Delivery Switch

Check that both flows are reinstated.

5. Partially close the Nitrous Oxide flowmeter to check that

it limits the Nitrous Oxide flow. Check that the reducing flow gives an increased Oxygen concentration. Fully open the Nitrous Oxide flowmeter.

6. Close the Oxygen flowmeter control valve gently until

the mechanical stop engages. Check that the same corresponding values of Oxygen and Nitrous Oxide flows are achieved as tabled above.

7. Ensure that when the Oxygen flow is at its basal level, all

Nitrous Oxide flows have ceased. Check that only the Oxygen Basal Flow is indicated on the flow tubes. Close the Nitrous Oxide Flowmeter and switch the Gas Delivery Switch to OFF.

FUNCTION TEST

6.8 Vaporizers and Back Bar Manifold

Assembly

6.8.1 Selectatec Compatible Vaporizer

1. Check that all the vaporizers are securely

mounted on the manifold. If a vaporizer is not secure, check the condition of the locking shaft (A).

2. On interlock vaporizers check that the interlock

mechanism of all vaporizers are working correctly, i.e that only one vaporizer at a time can be turned on.

3. Check all joints for gas tightness.

6.8.2 Cagemount Vaporizer

Vaporizers fitted with the Cagemount tapers have the male taper (Inlet Port - C) on the left and the female taper on the right as viewed from the front of the vaporizer. Two M6 studs with nuts, washers and a clamp plate (D) are provided to fix the vaporizer to the anaesthetic machine.

NOTE Some international standards demand that this type of vaporizer should only be used on machines with a single mounting station.

In addition, use a safety clip (Catalogue No 52275) to retain the Cagemount taper cones in position on the vaporizer.

Fitting the Vaporizer

1. The taper cone joints must be engaged axially

and not sideways loaded. Use the shims provided so that the distance from the back bar to the taper joint can be adjusted by adding or removing shims from the vaporizer.

2. The cone joints should then be lightly smeared

with an Oxygen compatible lubricant such as "Fomblin". The taper joints must be engaged by applying axial pressure, and the fixing nuts tightened.

Check all joints for gas tightness.

FUNCTION TEST

6.9 Reduced Pressure Gas

Circuit Leakage. (Back Bar Leak Test)

1 Connect a suitable test pressure

gauge (Manometer) to the Common Gas Outlet (CGO) using suitable tubing and connector.

2 Ensure all vaporizers attached to the

machine are turned OFF.

3 Using the Oxygen Flow Control Valve,

raise the pressure in the circuit slowly. Check that the Pressure Relief Valve (PRV) mounted under the gauge cover, on the right hand side, begins to leak in the range of 35 to 43 kPa (270-330 mmHg)

4 Do not raise the pressure above this

level

5 Alter the pressure by reducing the

Oxygen Flow Rate until the displayed reading on the test gauge is 20 kPa (150 mmHg).

6 The maximum permissible flow to

maintain the above pressure is 200 ml/min.

6.10 Emergency Oxygen Flush Control Test

1 Ensure all flowmeter control valves

are turned off.

2 Oxygen Cylinder is turned on and

Oxygen Pipeline is unconnected from the wall outlet.

3 Depress the Emergency Oxygen

Flush (O2 Flush) button on the CGO block.

4 Check that the delivered flow rate is

between 35 - 75 L/min.

5 Ensure the spring action cuts off the

Oxygen flow when the button is released.

6. Check that the whistle does not sound when the Oxygen flush is operated. If this occurs check that the Oxygen Cylinder Valve is fully open. If the problem is not rectified, instruct the service engineer to check: a) filters and Non-return valves for restriction. b) the pressure of the primary Oxygen

regulator.

7 If a higher flow rate is required to

maintain a pressure of 20 kPa (150 mmHg) there is a leak in the system that must be fixed. Use soap solution to detect leak, repair and repeat above tests (5, 6 &

7).

8 Repeat the above tests (5, 6 & 7) with

all fitted vaporizers turned on (Test one at a time) to check gas tightness of each individual vaporizer.

A leaking vaporizer must be withdrawn from use and returned to Penlon (UK Customers) for repair, or repaired by a Penlon Approved Dealer

(Non-UK Customers).

7. FAULT FINDING

7.1 Introduction

Provided the Prima SP Anaesthetic Machine is regularly serviced and correctly used, it is unlikely that serious component faults will occur.

After several years’ usage, some items may require replacement and regular performance checks - see section 8.

To trace possible faults, refer to the Fault Diagnosis Table, which will indicate the required action. In many cases, apparent machine faults may be attributable to causes other than machine malfunctions; these causes are also listed.

FAULT FINDING

7.2 Fault Diagnosis Table

Component

Cylinder pressure reducing valves, gauges and yokes.

Pressure relief valve leaks or out of adjustment.

Symptom

Leaking high pressure connection from cylinder to yoke.

Diaphragm or valve disc worn, damaged.

Outlet pressure too high,

- may occur with leaking pressure relief valve (above).

Outlet pressure too low.

Possible Fault

Bodok seal absent or worn.

Cylinder clamp screw assembly damaged.

Inadequate engagement of pin-index system.

Adjust/replace regulator as necessary.

Faulty relief valve.

Diaphragm worn, damaged or out of adjustment. Regulator seat damaged.

Loose connections. Tighten leaking joints. (DO NOT use excessive force)

Remedy

Fit/replace seal.

Replace as necessary.

Ensure correct gas cylinder is attached. Check index pins not loose or damaged. Replace as necessary.

Fit new relief valve.

Adjust/replace regulator as necessary.

Replace regulator.

Test for leaks.

Diaphragm or valve disc worn/damaged or regulator out of adjustment.

Pressure gauge reads zero when cylinder valve opened.

Adjust/replace regulator as necessary.

Cylinder empty.

Bodok seal absent or worn.

Cylinder clamp screw assembly damaged. Pressure gauge seal damaged.

Replace cylinder.

Fit/replace seal.

Replace as necessary.

FAULT FINDING

Component

Pipeline supply hoses and inlet blocks

Symptom

Pressure gauge pointer sticks at above zero reading.

Leaking high pressure non-return valve.

Pressure gauge reads zero when connection to supply made.

Possible Fault

Inadequate engagement of pin-index system.

Defective gauge.

Gas trapped in system.

Damaged ‘O’ seal.

Loose connections. Tighten leaking joints. (DO NOT use excessive force).

Defective gauge.

Faulty probe or hose.

Blocked filter.

Remedy

Ensure correct gas cylinder is attached. Check index pins not loose or damaged.

Replace gauge.

Open flowmeter and empty system.

Replace plunger ‘O’ seal assembly.

Test for leaks.

Replace gauge.

Replace as necessary.

Flowmeter units

Insufficient free flow.

Float stays at bottom of tube when control valve opened.

Pipeline supply defective.

Blocked filter.

Pipeline supply defective.

No gas supply.

Pressure reduction valve defect.

Pipeline supply defective.

Control knob loose on shaft.

Contact hospital engineer.

Replace as necessary.

Contact hospital engineer.

Check cylinder/pipeline connections.

See instructions under component group

See instructions under component group.

Tighten.

FAULT FINDING

Component

Flowmeter units (Mechanical AHD only)

Symptom

Float stays at bottom of tube when control valve

O flowmeter)

opened(N

Restricted flow through flowmeter (Control valve opening does not achieve expected flow)

Incorrect O

2 concentra-

tion.

Possible Fault

Machines with Air sup-

O/Air Interlock

ply - N switch correctly set.

Gas delivery switch left in off position.

Gear linkage loose on

2 or N2O primary

O valve shaft.

Gear linkage loose on valve shaft.

2O flow limited by

2O control valve.

Secondary regulators out of alignment.

Gear linkage loose on valve shaft.

Remedy

Check position of switch.

Turn on gas delivery switch

Reset gears and tighten

Open N

2O control valve

Check and reset secondary regulators. Replace if necessary

Reset gears and tighten

FAULT FINDING

Component Symptom

Float sticks at above zero reading when control valve closed.

Possible Fault

Dirt in tube.

Build up of electrostatic charge.

Flowmeter unit not vertical.

Upper float retaining peg not centralised or moulding flash not removed.

Worn needle valve.

Remedy

Remove tube and clean.

Check earthing contacts at bottom of flowmeter tubes.

Increase flow rate sharply to break charge, then close valve.

Ensure trolley is on level surface.

Remove flow tube and retaining peg. Clean off moulding flash and re-position retaining peg.

Replace complete valve and/or seat.assembly.

Float level unstable after start up.

Pressure reducing valve defect.

Flowmeter unit not vertical.

See instruction under component group.

Ensure machine is on level surface.

FAULT FINDING

Component Symptom

Restricted flow through flowmeter (Control valve opening does not achieve expected flow).

Float level falls after initial setting.

Possible Fault

Faulty cylinder pressure reducing valve, yoke or connections.

Faulty pipeline supply hoses or connections.

Blocked flowmeter filter.

Control knob loose on shaft.

Incorrect valve restriction shimming.

Damaged valve seat assembly.

Reducing valve defect.

Pipeline supply defect.

Leak in ‘upstream’ connection.

Blockage in ‘downstream’ gas circuit.

(Not oxygen flowmeter) Gas cut-off units in operation or defective.

Worn needle valve and/or seat.

Remedy

See instruction under component group.

See instructions under component group.

Clean or replace lower bobbin assembly.

Tighten.

Reset valve shims.

Replace complete valve.

See instructions under relevant component group.

See instructions under component group.

Test for leaks. Tighten leaking joints. (DO NOT use excessive force.)

Trace site of blockage and clear.

See instructions under component group.

Replace complete valve assembly.

FAULT FINDING

Component

Vaporizer mounting facility.

Selectatec compatible system.

2O and CO2 gas cut-

N off unit.

Symptom

Leakage at back bar manifold or vaporize interlock joints.

Leakage from back bar.

Leakage from vaporizer connections. Vaporizer difficult to remove.

No nitrous oxide, third or fourth gas.

2O, third or fourth

No N gas (or restricted flow of these gases)

Safety capsule valve fails to operate correctly.

Possible Fault

Loose manifold or vaporizer retaining screws.

Missing ‘O’ seals

Damaged or worn gas valves.

Damaged or worn ’O’ seals or seal faces. Damaged or worn locking system.

Oxygen supply not turned on.

Mechanical AHD gas delivery switch left in ‘Off’ position.

Faulty safety capsule valve.

Valve shuttle or seals defective.

Loose valve retaining screws. Worn or damaged ‘O’ seals.

Remedy

Tighten.

Replace ‘O’ seals.

Replace valve.

Replace as necessary.

Replace components as necessary.

Turn on supply.

Turn on gas delivery switch

Replace valve.

Fit replacement capsule valve.

Tighten.

Replace seals.

Vent port blocked.

See instructions under component group.

FAULT FINDING

Component

Warning Whistle.

Symptom

Leaks at joint between manifold and valve seating.

Valve cuts flow of nitrous oxide as required but does not restore it.

Leakage at whistle.

Whistle continually sounds when oxygen on.

Whistle fails to sound.

Possible Fault

Loose valve.

Worn O seals.

Valve shuttle or seals defective.

Loose connection.

Faulty whistle.

Low pressure in circuit.

Faulty whistle.

Low pressure in circuit.

Remedy

Tighten retaining screws.

Replace seals.

Fit replacement valve.

Tighten. (DO NOT use excessive force).

Replace whistle.

See instructions under component group.

Replace whistle.

See instructions under component group.

Pressure relief valve (fresh gas circuit)

Leakage through valve.

Relief pressure too high.

Relief pressure too low.

High pressure in circuit.

Faulty valve

Reduce pressure. Check for blockage in ‘downstream’ circuit.

Replace complete valve

Replace complete valve.

FAULT FINDING

Component

Emergency oxygen flush

Symptom

Valve does not operate.

Low Oxygen flow (less than 35 l/min).

Leaks around control button.

2 flow into breathing

O circuit or atmosphere (valve does not shut off flow).

Possible Fault

No oxygen supply.

Defective valve.

Low oxygen supply pressure.

Worn valve seals.

Incorrect adjustment of valve shaft.

Incorrect control jet.

Worn valve seals.

Incorrect adjustment of valve shaft.

Remedy

See instructions under component groups.

Replace valve.

See instructions under components group.

Fit new seals or replace valves as necessary.

Replace valve.

Replace control jet.

Fit new seals or replace valve as necessary.

Replace valve.

Defective valve.

Replace valve.

FAULT FINDING

Component

Electrical power supply

Oxygen Monitor

Symptom

Machine ‘dead’.

Display blank when powered-up

2 concentration dis-

O play shows ‘E--’

2 MONITOR INOP

O alarm is On

Possible Fault

Mains supply /socket

Faulty on/off switch

Mains supply faulty.

Mains power off or faulty.

Battery not charged.

Faulty battery.

Battery missing.

Sensor not connected.

Remedy

Check supply (plug ON).

Replace switch (front panel).

Reset circuit breaker (rear panel).

Check supply (plug/socket ON)

Charge

Replace battery

Fit Battery

Check connections

Press and hold both ALARM MUTE and LOW ALARM SET button. All the LEDs should illuminate for 2 seconds. The high alarm set and low alarm set will default to 100 and 18 respectively.

Battery Low LED and Mains On LED illuminated.

Battery In Use LED illuminated (Mains supply connected)

Faulty battery.

Faulty circuitry.

Mains supply faulty.

Replace batteries.

Replace control PCB or alarm PCB.

A) Check supply

(plug/socket, ON).

B) Reset circuit

breaker (rear panel).

8. SERVICE SCHEDULE

8.1 Service Schedule

Recommended Service Frequency

Six Month Service Annual Service Two Year Service Six Year Service NOTE: Preventive Maintenance Kit Part Numbers are listed in section 10.

8.2 Six Month Service Checks

(To be performed at 6, 18, 30, 42, 54, & 66 months of a 72-month cycle.)

Machine Frame:

1. Check integrity of structure and security of all attachments.

2. Check for damage.

3. Check wheels for freedom of movement and braking.

4. Check drawers, writing tablet move freely.

Electrical Safety Test:

1. Check mains lead and plug for damage.

2. Perform Electrical Safety Tests as relevant for country of use.

Cylinder Yoke Assemblies:

1. Check for damage, cleanliness, all fittings are tight and clamping screws for freedom of movement.

2. Replace Bodok seals.

Pipeline Hose Checks:

1. Examine pipeline connectors, probes and hoses for cleanliness and damage.

2. Perform anti-confusion checks.

3. Perform pressure Leak Checks of all hoses with cylinders removed and Gas Delivery Switch in the OFF position.

Pressure Gauge Checks:

1. Examine all pressure gauges for damage and clarity.

2. Check movement of needles is smooth.

Gas Delivery Switch Inspection:

1. Check switch for correct operation.

Nitrous Oxide / Air Control Switch:

1. Check switch for correct operation.

Regulator Checks:

1. Check operation.

2. Check output pressure of Primary Regulators.

3. Check output pressure of Secondary Regulators.

4. Perform pressure Leak Test of all cylinder Gas Supplies with all Pipelines disconnected from supply. Perform this test with Gas Delivery Switch turned ON and Oxygen Basal Flow blanked off.

SERVICE SCHEDULE

5. For Air / N20 repeat the test with the selector switch in the required position.

6. On completion of tests reinstate basal flow by removing test blanking plug.

Common Gas Outlet Checks (CGO):

1. Check security and freedom of movement of CGO.

2. Check Safelock O-ring.

3. Check O

Oxygen Fail Alarms:

1. Simulate an Oxygen fail by unplugging the Oxygen Pipeline from the outlet. Check that before the supply of oxygen is exhausted that the Oxygen Fail Whistle sounds for a minimum of 7 seconds. Check that any Nitrous Oxide and Carbon Dioxide (if fitted) Gas Flows are cut off.

2. Check that the Oxygen Supply Visual Indicator turns from fully green to fully red.

3. Turn on Oxygen cylinder. Check Oxygen Basal flow reinstated and whistle sounds briefly.

4. Turn off Oxygen cylinder and repeat above tests.

Flowmeter and Mechanical AHD Checks:

1. Check Flow Control Valves for smooth operation and positive off position.

2. If CO

3. Check flow tubes.

4. Check Bobbin Floats move freely and rotate within the glass tube.

5. Check maximum flow capability of all gases.

6. Connect O

7. Turn On Gas Delivery Switch Check Basal Flow of Oxygen is delivered with all Flow Control Valves closed down.

All models - up to March 2002 100-200 ml/min

Cascade O

Single O

2 Emergency Flush flowrate is 35 - 75 L/min

2 is fitted check that the maximum flow is restricted to 500-600 ml/min flow rate.

2 Monitor to CGO.

2 flowmeter- March 2002 onwards 50-75 ml/min

2 flowmeter - March 2002 onwards 100-200 ml/min

8. Check no other gas flows are indicated.

9. Ensure N

2O / Air Selection switch is positioned for N2O.

10. Fully open N2O Flow Control Valve Check that NO flow of N

2O occurs.

11. Slowly operate O2 control valve throughout range:

Refer to the table below, and check % Oxygen concentration at the oxygen flows specified .

Adjust the Oxygen Flowmeter control only - Do NOT adjust the N2O flowmeter.

Note The flow rates for N

O2 Flow %O2 (in O2/N2O mixture) N2O Flow

2O are given as a guide only.

*0.25 L/min 27 - 33 % 0.5 - 0.67 *0.5 L/min 27 - 33 % 1.0 - 1.35

0.8 L/min 27 - 33 % 1.6 - 2.1

1.5 L/min 27 - 33 % 3.0 - 4.1

3.0 L/min 27 - 33 % 6.1 - 8.1

*Cascade flowmeter models - March 2002 onwards

12. Repeat tests by reducing Oxygen flow back to Basal Flow conditions, referring to the values in the above table.

SERVICE SCHEDULE

Back Bar Assembly - Selectatec - Checks.

1. Replace Selectatec O-rings.

2. Check all pillar valves open and seal correctly.

3. Check pillar valve inserts sit proud or flush with the pillar valve. A sunken pillar valve insert denotes failure of the internal spring.

4. Check vaporizer interlock system for correct operation.

Back Bar Assembly - Cagemount - Checks.

1. Check flexible hoses.

2. Check security of taper connectors Use Fomblin or other Oxygen-safe grease to lightly lubricate the metal surface where male and female connector come into contact with each other.

Fresh Gas Pressure Relief Valve (PRV) Test.

1. Occlude CGO.

2. At 10 L/min Flowrate of Oxygen the PRV relieves at 39 KPa ± 10 %

Leak Test From Flowmeter to Common Gas Outlet

1. Fit a suitable Manometer Test gauge to the CGO.

2. Set Oxygen Flow to maintain a pressure of 20 KPa (3 psi). Maximum permissible flow is 200 ml/min.

3. Perform test with and without Vaporizer(s) fitted and with vaporizer(s) turned both ON and OFF.

Auxiliary Outlets:

1. Check outlets for security, damage and correct lock and release movement.

2. Check dynamic flowrate and that Oxygen Fail Whistle does not operate.

Oxygen Monitor (if fitted) Function and Calibration Tests.

1. Connect a Test O

2 Analyser into the patient circuit.

2. Check that the machine O2 sensor is inserted into the absorber O2 sampling point.

sensors in 100% Oxygen.

3. Test both O

4. Expose both sensors to air and check reading is 21% ± 2. Adjust high and low O

alarms and check alarms trigger when values are lower or

higher than reading on O2analyser respectively. Return the alarm levels to original settings.

5. Restore the sensor to correct location. Remove the test O2 analyser.

Final Gas Concentration Tests.

1. Check concentration by Gas.

2. Check flowrate from CGO corresponds with flowmeter by concentration.

3. Set 3 L/min Oxygen and Nitrous Oxide Flows. Check, using O

4. Set Oxygen to 0.5 L/min, set N

2 Monitor that the concentration from the CGO is 50% ± 2%.

2O to 0.5 L/min.

Allow O2 monitor to stabilise then check concentration is 50% ± 2%.

5. If fitted repeat above test substituting Carbon Dioxide for N2O.

6. If fitted set Air to 3 L/min, set Oxygen to 3 L/min. Check Concentration reading on O

2 Monitor is 60% ± 2%.

SERVICE SCHEDULE

Test Completion / Paperwork

1. Remove all test equipment from machine.

2. Drain all Gas from machine.

3. Turn OFF Gas Delivery Switch.

4. Turn Off all cylinders.

5. Turn off all Flow Control Valves.

6. Attach Service and Warning Labels.

Penlon recommends that after servicing the Anaesthetic Machine should be given an "Acceptance Check" by an Anaesthetist before being returned to Operational Use.

SERVICE SCHEDULE

8.3 Twelve Month Service Checks

(To be performed at 12, 36, and 60 Months of a 72-month cycle.)

NOTE: AT 60 MONTHS ALL CYLINDER GAS SUPPLY PRESSURE REDUCING VALVES

SHOULD BE REPLACED. These are not and must be ordered separately.

Machine Frame:

1. Check integrity of structure and security of all attachments.

2. Check for damage.

3. Check wheels for freedom of movement and braking.

4. Check drawers, writing tablet move freely.

Electrical Safety Test:

1. Check mains lead and plug for damage.

2. Perform Electrical Safety Tests as relevant for country of use.

Cylinder Yoke Assemblies:

1. Check for damage, cleanliness, all fittings are tight and clamping screws for freedom of movement.

2. Replace Bodok seals.

3. Replace Yoke inlet filters.

included in the Preventive Maintenance Kits

Pipeline Hose Checks:

1. Examine pipeline connectors, probes and hoses for cleanliness and damage.

2. Perform anti-confusion checks.

3. Perform pressure Leak Checks of all hoses with cylinders removed and Gas Delivery Switch in the OFF position.

4. Replace Pipeline Filters.

Pressure Gauge Checks:

1. Examine all pressure gauges for damage and clarity.

2. Check movement of needles is smooth.

Gas Delivery Switch Inspection:

1. Check switch for correct operation.

Nitrous Oxide / Air Control Switch:

1. Check switch for correct operation.

Regulator Checks:

1. Check operation.

2. Check output pressure of Primary Regulators.

3. Check output pressure of Secondary Regulators.

4. Perform pressure Leak Test of all cylinder Gas Supplies with all Pipelines disconnected from supply. Perform this test with Gas Delivery Switch turned ON and Oxygen Basal Flow blanked off.

5. For Air / N

6. On completion of tests reinstate basal flow by removing test blanking plug.

2O repeat the test with the selector switch in the required position.

Common Gas Outlet Checks (CGO):

1. Check security and freedom of movement of CGO.

2. Replace Safelock O-ring.

3. Check O

2 Emergency Flush flowrate is 35 - 75 L/min

SERVICE SCHEDULE

Oxygen Fail Alarms:

1. Simulate an Oxygen fail by unplugging the Oxygen Pipeline from the outlet and check that before the supply of oxygen is exhausted that the Oxygen Fail Whistle sounds for a minimum of 7 seconds. Check that any Nitrous Oxide and Carbon Dioxide (if fitted) Gas Flows are cut off.

2. Check that the Oxygen Supply Visual Indicator turns from fully green to fully red.

3. Turn on Oxygen cylinder. Check Oxygen Basal flow reinstated and whistle sounds briefly.

4. Turn off Oxygen cylinder and repeat above tests.

Flowmeter and Mechanical AHD Checks:

1. Check Flow Control Valves for smooth operation and positive off position.

2. If CO

3. Check flow tubes.

4. Check Bobbin Floats move freely and rotate within the glass tube.

5. Check maximum flow capability of all gases.

6. Connect O2 Monitor to CGO.

7. Turn On Gas Delivery Switch.

2 is fitted check that the maximum flow is restricted to 500-600 ml/min flow rate.

Check Oxygen Basal Flow with all Flow Control Valves closed down:

All models - up to March 2002 100-200 ml/min

Cascade O

Single O

2 flowmeter- March 2002 onwards 50-75 ml/min

2 flowmeter - March 2002 onwards 100-200 ml/min

8. Check no other gas flows are indicated.

9. Ensure N

2O / Air Selection switch is positioned for N2O.

10. Fully open N2O Flow Control Valve and check that NO flow of N2O occurs.

11. Slowly operate O2 control valve throughout range. Check % Oxygen concentration at the oxygen flows specified below.

Adjust the Oxygen Flowmeter control only - Do NOT adjust the N

Note The flow rates for N

O2 Flow %O2 (in O2/N2O mixture) N2O Flow

2O are given as a guide only.

2O flowmeter.

*0.25 L/min 27 - 33 % 0.5 - 0.67 *0.5 L/min 27 - 33 % 1.0 - 1.35

0.8 L/min 27 - 33 % 1.6 - 2.1

1.5 L/min 27 - 33 % 3.0 - 4.1

3.0 L/min 27 - 33 % 6.1 - 8.1

Cascade flowmeter models - March 2002 onwards

12. Repeat tests by reducing Oxygen flow back to Basal Flow conditions, referring to the values in the above table.

Back Bar Assembly - Selectatec - Checks.

1. Replace Selectatec O-rings.

2. Replace flexible hose - Backbar Outlet to CGO 1.35 m

3. Replace Tubing - Sample Block underneath back bar right side of machine.

4. Check all pillar valves open and seal correctly.

5. Check pillar valve inserts sit proud or flush with the pillar valve. A sunken pillar valve insert denotes failure of the internal spring.

6. Check vaporizer interlock system for correct operation.

7. Replace Vaporizer locking springs (Dzus Clip)

SERVICE SCHEDULE

Back Bar Assembly - Cagemount - Checks.

1. Replace flexible hoses - Cagemount.

2. Replace flexible hose - Backbar Outlet to CGO 1.35 m

3. Replace Tubing - Sample Block underneath back bar right side of machine.

4. Check security of taper connectors.

5. Use Fomblin or other Oxygen safe grease to lightly lubricate the metal surface where male and female connector come into contact with each other.

Fresh Gas Pressure Relief Valve (PRV) Test.

1. Occlude CGO.

2. At 10 L/min Flowrate of Oxygen, check the PRV relieves at 39 KPa ± 10 %

Leak Test From Flowmeter to Common Gas Outlet

1. Fit a suitable Manometer Test gauge to the CGO.

2. Set Oxygen Flow to maintain a pressure of 20 kPa (3 psi). Maximum permissible flow is 200 ml/min.

3. Test with/without vaporizer(s) fitted and with vaporizer(s) turned both ON and OFF.

Auxiliary Outlets:

1. Check outlets for security, damage and correct lock and release movement.

2. Check dynamic flowrate and that Oxygen Fail Whistle does not operate.

Oxygen Monitor (if fitted) Function and Calibration Tests.

1. Connect a Test O

2 Analyser into the patient circuit.

2. Check that the machine O2 sensor is inserted into the absorber O2 sampling point.

3. Test both O2 sensors in 100% Oxygen.

4. Expose both sensors to air and check reading is 21% ± 2. Adjust high and low O higher than reading on O

2 alarms and check alarms trigger when values are lower or

2 analyser respectively.

Return the alarm levels to original settings.

5. Restore the sensor to correct location. Remove the test O

2 analyser.

Final Gas Concentration Tests.

1. Check concentration by Gas.

2. Check flowrate from CGO corresponds with flowmeter by concentration.

3. Set 3 L/min Oxygen and Nitrous Oxide Flows and check using O

2 Monitor that the

concentration from the CGO is 50% ± 2%.

4. Set Oxygen to 0.5 L/min, set N2O to 0.5 L/min, allow O2 monitor to stabilise then check concentration is 50% ± 2%.

5. If fitted repeat above test substituting Carbon Dioxide for N2O.

6. If fitted set Air to 3 L/min, set Oxygen to 3 L/min and check Concentration on O

Monitor is 60% ± 2%.

Test Completion / Paperwork

1. Remove all test equipment from machine.

2. Drain all Gas from machine.

3. Turn OFF Gas Delivery Switch.

4. Turn Off all cylinders.

5. Turn off all Flow Control Valves.

6. Attach Service and Warning Labels.

Penlon recommends that after servicing the Anaesthetic Machine should be given an "Acceptance Check" by an Anaesthetist before being returned to Operational Use.

SERVICE SCHEDULE

8.4 Twenty-Four Month Service Checks

(To be performed at 24, and 48 Months of a 72-month cycle.)

AT 48 MONTHS ALL GAS- CARRYING PIPELINE HOSES SHOULD BE REPLACED. These are not included in the Preventive Maintenance Kits and must be ordered separately.

Machine Frame:

1. Check integrity of structure and security of all attachments.

2. Check for damage.

3. Check wheels for freedom of movement and braking.

4. Check drawers, writing tablet move freely.

Electrical Safety Test:

1. Check mains lead and plug for damage.

2. Perform Electrical Safety Tests as relevant for country of use.

Cylinder Yoke Assemblies:

1. Check for damage, cleanliness, all fittings are tight and clamping screws for freedom of movement.

2. Replace Bodok seals.

3. Replace Yoke inlet filters.

Pipeline Hose Checks:

1. Examine pipeline connectors, probes and hoses for cleanliness and damage.

2. Perform anti-confusion checks.

3. Perform pressure Leak Checks of all hoses with cylinders removed and Gas Delivery Switch in the OFF position.

4. Replace Pipeline Filters.

Pressure Gauge Checks:

1. Examine all pressure gauges for damage and clarity.

2. Check movement of needles is smooth.

Gas Delivery Switch Inspection:

1. Check switch for correct operation.

Nitrous Oxide / Air Control Switch:

1. Check switch for correct operation.

Regulator Checks:

1. Check operation.

2. Check output pressure of Primary Regulators.

3. Check output pressure of Secondary Regulators.

4. Perform pressure Leak Test of all cylinder Gas Supplies with all Pipelines disconnected from supply. Perform this test with Gas Delivery Switch turned ON and Oxygen Basal Flow blanked off.

5. For Air / N

6. On completion of tests reinstate basal flow by removing test blanking plug.

20 repeat the test with the selector switch in the required position.

Common Gas Outlet Checks (CGO):

1. Check security and freedom of movement of CGO.

2. Replace Safelock O-ring.

3. Check O

2 Emergency Flush flowrate is 35 - 75 L/min

SERVICE SCHEDULE

Oxygen Fail Alarms:

1. Simulate an Oxygen fail by unplugging the Oxygen Pipeline from the outlet and check that before the supply of oxygen is exhausted that the Oxygen Fail Whistle sounds for a minimum of 7seconds. Check that any Nitrous Oxide and Carbon Dioxide (if fitted) Gas Flows are cut off.

2. Check that the Oxygen Supply Visual Indicator turns from fully green to fully red.

3. Turn on O

4. Turn off Oxygen cylinder and repeat above tests.

Flowmeter and Mechanical AHD Checks:

1. Turn off all cylinders and drain the gases from the machine.

2. Replace flowmeter tube seals and filters.

3. Check Flow Control Valves for smooth operation and positive off position.

4. If CO

5. Check flow tubes.

6. Check Bobbin Floats move freely and rotate within the glass tube.

7. Check maximum flow capability of all gases.

8. Connect O

9. Turn On Gas Delivery Switch. Check Basal Flow of Oxygen is delivered with all Flow Control Valves closed down.

All models - up to March 2002 100-200 ml/min

Cascade O

Single O

10. Check no other gas flows are indicated.

11. Ensure N

12. Fully open N2O Flow Control Valve and check that NO flow of N2O occurs.

13. Slowly operate O2 control valve throughout range. Check % Oxygen concentration at the oxygen flows specified below.

Adjust the Oxygen Flowmeter control only - Do NOT adjust the N

Note The flow rates for N2O are given as a guide only.

O2 Flow %O2 (in O2/N2O mixture) N2O Flow

*0.25 L/min 27 - 33 % 0.5 - 0.67 *0.5 L/min 27 - 33 % 1.0 - 1.35

0.8 L/min 27 - 33 % 1.6 - 2.1

1.5 L/min 27 - 33 % 3.0 - 4.1

3.0 L/min 27 - 33 % 6.1 - 8.1

2 cylinder. Check O2 Basal flow reinstated and whistle sounds briefly.

2 is fitted check that the maximum flow is restricted to 500-600 ml/min flow rate.

2 Monitor to CGO.

2 flowmeter- March 2002 onwards 50-75 ml/min

2 flowmeter - March 2002 onwards 100-200 ml/min

2O / Air Selection switch is positioned for N2O.

2O flowmeter.

*Cascade flowmeter models - March 2002 onwards

14. Repeat tests by reducing Oxygen flow back to Basal Flow conditions, referring to the values in the above table.

Back Bar Assembly - Selectatec - Checks.

1. Replace Selectatec O-rings.

2. Replace flexible hose - Backbar Outlet to CGO 1.35 m

3. Replace Tubing - Sample Block underneath back bar right side of machine.

4. Check all pillar valves open and seal correctly.

5. Check pillar valve inserts sit proud or flush with the pillar valve. A sunken pillar valve insert denotes failure of the internal spring.

6. Check vaporizer interlock system for correct operation.

7. Replace Vaporizer locking springs (Dzus Clip).

SERVICE SCHEDULE

Back Bar Assembly - Cagemount - Checks.

1. Replace flexible hoses - Cagemount.

2. Replace flexible hose - Backbar Outlet to CGO 1.35 m

3. Replace Tubing - Sample Block underneath back bar right side of machine.

4. Check security of taper connectors.

5. Use Fomblin or other Oxygen safe grease to lightly lubricate the metal surface where male and female connector come into contact with each other.

Fresh Gas Pressure Relief Valve (PRV) Test.

1. Occlude CGO.

2. At 10 L/min Flowrate of Oxygen the PRV relieves at 39 KPa ± 10 %

Leak Test From Flowmeter to Common Gas Outlet

1. Fit a suitable Manometer Test gauge to the CGO.

2. Set Oxygen Flow to maintain a pressure of 20 KPa (3 psi). Maximum permissible flow is 200 ml/min.

3. Test with/without Vaporizer(s) fitted and with vaporizer(s) turned both ON and OFF.

Auxiliary Outlets:

1. Check outlets for security, damage and correct lock and release movement.

2. Check dynamic flowrate and that Oxygen Fail Whistle does not operate.

Final Gas Concentration Tests.

1. Check concentration by Gas.

2. Check flowrate from CGO corresponds with flowmeter by concentration.

3. Set 3 L/min Oxygen and Nitrous Oxide Flows and check using O

2 Monitor that the

concentration from the CGO is 50% ± 2%.

4. Set Oxygen to 0.5 L/min, set N

2O to 0.5 L/min, allow O2 monitor to stabilise then

check concentration is 50% ± 2%.

5. If fitted repeat above test substituting Carbon Dioxide for N

2O.

6. If fitted set Air to 3 L/min, set Oxygen to 3 L/min and check Concentration on O2 Monitor is 60% ± 2%.

Oxygen Monitor (if fitted) Function and Calibration Tests.

1. Connect a Test O

2. Check that the machine O

2 Analyser into the patient circuit.

2 sensor is inserted into the absorber O2 sampling point.

3. Test both O2 sensors in 100% Oxygen.

4. Expose both sensors to air and check reading is 21% ± 2. Adjust high and low O2 alarms and check alarms trigger when values are lower or higher than reading on O2 analyser respectively.

Return the alarm levels to original settings.

5. Restore the sensor to correct location. Remove the test O

2 analyser.

Test Completion / Paperwork

1. Remove all test equipment from machine.

2. Drain all Gas from machine.

3. Turn OFF Gas Delivery Switch.

4. Turn Off all cylinders.

5. Turn off all Flow Control Valves.

6. Attach Service and Warning Labels.

Penlon recommends that after servicing the Anaesthetic Machine should be given an "Acceptance Check" by an Anaesthetist before being returned to Operational Use.

SERVICE SCHEDULE

8.5 Seventy-Two Month Service Checks

(To be performed at 72 Months of a 72-month cycle.)

Machine Frame:

1. Check integrity of structure and security of all attachments.

2. Check for damage.

3. Check wheels for freedom of movement and braking.

4. Check drawers, writing tablet move freely.

5. Replace all internal tubing.

Electrical Safety Test:

1. Check mains lead and plug for damage.

2. Perform Electrical Safety Tests as relevant for country of use.

Cylinder Yoke Assemblies:

1. Check for damage, cleanliness, all fittings are tight and clamping screws for freedom of movement.

2. Replace Bodok seals.

3. Replace Yoke inlet filters.

4. Replace Cylinder Non Return Valve O-rings

5. Replace Pipeline Non return Valve O-rings

Pipeline Hose Checks:

1. Examine pipeline connectors, probes and hoses for cleanliness and damage.

2. Perform anti-confusion checks.

3. Perform pressure Leak Checks of all hoses with cylinders removed and Gas Delivery Switch in the OFF position.

4. Replace Pipeline Filters.

Pressure Gauge Checks:

1. Examine all pressure gauges for damage and clarity.

2. Check movement of needles is smooth.

Gas Delivery Switch Inspection:

1. Check switch for correct operation.

Nitrous Oxide / Air Control Switch:

1. Check switch for correct operation.

Regulator Checks:

1. Check operation.

2. Check output pressure of Primary Regulators.

3. Replace Secondary Regulators.

4. Check output pressure of Secondary Regulators.

5. Perform pressure Leak Test of all cylinder Gas Supplies with all Pipelines disconnected from supply. Perform this test with Gas Delivery Switch turned ON and

Oxygen Basal Flow blanked off.

6. For Air / N

7. On completion of tests reinstate basal flow by removing test blanking plug.

20 repeat the test with the selector switch in the required position.

Common Gas Outlet Checks (CGO):

1. Check security and freedom of movement of CGO.

2. Replace Safelock O-ring.

3. Replace O

4. Check O2 Emergency Flush flowrate is 35 - 75 L/min

2 Emergency Flush valve.

SERVICE SCHEDULE

Oxygen Fail Alarms:

2. Check that the Oxygen Supply Visual Indicator turns from fully green to fully red.

3. Turn on Oxygen cylinder. Check Oxygen Basal flow reinstated and whistle sounds briefly.

4. Turn off Oxygen cylinder and repeat above tests.

Flowmeter and Mechanical AHD Checks:

1. Turn off all cylinders and drain the gases from the machine.

2. Replace flowmeter tube seals and filters.

3. Check Flow Control Valves for smooth operation and positive off position.

4. If CO

5. Check flow tubes.

6. Check Bobbin Floats move freely and rotate within the glass tube.

7. Check maximum flow capability of all gases.

8. Connect O2 Monitor to CGO.

9. Turn On Gas Delivery Switch.

10. Check no other gas flows are indicated.

11. Ensure N2O / Air Selection switch is positioned for N2O.

12. Fully open N

13. Slowly operate O2 control valve throughout range.

2 is fitted check that the maximum flow is restricted to 500-600 ml/min flow rate.

Check Basal Flow of Oxygen is delivered with all Flow Control Valves closed down.

All models - up to March 2002 100-200 ml/min Cascade O

Single O

2 flowmeter- March 2002 onwards 50-75 ml/min

2 flowmeter - March 2002 onwards 100-200 ml/min

2O Flow Control Valve and check that NO flow of N2O occurs.

Check % Oxygen concentration at the oxygen flows specified below.

Adjust the Oxygen Flowmeter control only - Do NOT adjust the N

O are given as a guide only.

Note The flow rates for N

O2 Flow %O2 (in O2/N2O mixture) N2O Flow

2O flowmeter.

*0.25 L/min 27 - 33 % 0.5 - 0.67 *0.5 L/min 27 - 33 % 1.0 - 1.35

0.8 L/min 27 - 33 % 1.6 - 2.1

1.5 L/min 27 - 33 % 3.0 - 4.1

3.0 L/min 27 - 33 % 6.1 - 8.1

*Cascade flowmeter models - March 2002 onwards

14. Repeat tests by reducing Oxygen flow back to Basal Flow conditions referring to the values in the above table.

Back Bar Assembly - Selectatec - Checks.

1. Replace Selectatec O-rings.

2. Replace flexible hose - Backbar Outlet to CGO (1.35 m)

3. Replace Tubing - Sample Block underneath back bar right side of machine.

4. Check all pillar valves open and seal correctly.

5. Check pillar valve inserts sit proud or flush with the pillar valve. A sunken pillar valve insert denotes failure of the internal spring.

6. Check vaporizer interlock system for correct operation.

7. Replace Vaporizer locking springs (Dzus Clip).

SERVICE SCHEDULE

Back Bar Assembly - Cagemount - Checks.

1. Replace flexible hoses - Cagemount.

2. Replace flexible hose - Backbar Outlet to CGO 1.35 m

3. Replace Tubing - Sample Block underneath back bar right side of machine.

4. Check security of taper connectors.

5. Use Fomblin or other Oxygen safe grease to lightly lubricate the metal surface where male and female connector come into contact with each other.

Fresh Gas Pressure Relief Valve (PRV) Test.

1. Occlude CGO.

2. At 10 L/min Flowrate of Oxygen the PRV relieves at 39 KPa ± 10 %

Leak Test From Flowmeter to Common Gas Outlet

1. Fit a suitable Manometer Test gauge to the CGO.

2. Set Oxygen Flow to maintain a pressure of 20 KPa (3 psi). Maximum permissible flow is 200 ml/min.

3. Test with/ without Vaporizer(s) fitted and with vaporizer(s) turned both ON and OFF.

Auxiliary Outlets:

1. Check outlets for security, damage and correct lock and release movement.

2. Check dynamic flowrate and that Oxygen Fail Whistle does not operate.

Oxygen Monitor (if fitted)

1. Replace back up battery.

Function and Calibration Tests.

1. Connect a Test O

2. Check that the machine O2 sensor is inserted into the absorber O2

2 Analyser into the patient circuit.

sampling point.

3. Test both O2 sensors in 100% Oxygen.

4. Expose both sensors to air and check reading is 21% ± 2. Adjust high and low O higher than reading on O

2 alarms and check alarms trigger when values are lower or

2 analyser respectively.

Return the alarm levels to original settings.

5. Restore the sensor to correct location. Remove the test O2 analyser.

Final Gas Concentration Tests.

1. Check concentration by Gas.

2. Check flowrate from CGO corresponds with flowmeter by concentration.

3. Set 3 L/min Oxygen and Nitrous Oxide Flows and check using O

2 Monitor that the

concentration from the CGO is 50% ± 2%.

4. Set Oxygen to 0.5 L/min, set N2O to 0.5 L/min, allow O2 monitor to stabilise then check concentration is 50% ± 2%.

5. If fitted repeat above test substituting Carbon Dioxide for N

2O.

6 If fitted set Air to 3 L/min, set Oxygen to 3 L/min and check Concentration on O2

Monitor is 60% ± 2%.

Test Completion / Paperwork

1. Remove all test equipment from machine.

2. Drain all Gas from machine.

3. Turn OFF Gas Delivery Switch.

4. Turn Off all cylinders.

5. Turn off all Flow Control Valves.

6. Attach Service and Warning Labels.

Penlon recommends that after servicing the Anaesthetic Machine should be given an "Acceptance Check" by an Anaesthetist before being returned to Operational Use.

9. SERVICING PROCEDURES

9.1 Servicing

The Prima SP range of anaesthetic machines must only be serviced by a Penlon-trained engineer to the following service schedule:

Every 6 months Inspection and Function Check

Every 12 months Annual service which includes routine replacement of seals, etc. as preventive maintenance

Every 2 and 6 years Additional tests and component replacement

Details of these service operations are given in this Prima SP Service Manual, available only to Penlon trained engineers.

Mechanical AHD System

Additional servicing for the mechanical AHD system only.

Function Test

(At 6 month intervals, see section 6.8 to 6.11)

Additional Servicing

(At 12 month intervals) Secondary Regulators - check pressure setting Gear linkage - inspect

At 5 years interval

Primary regulators - replace

9.2 Ancillary Equipment

9.2.1 Sigma Delta Vaporizer

Follow the instructions given in section 8 of the user instruction manual. These include: Every 6 months Function test and calibration test Every 10 years Major overhaul (if unit to be used beyond 10 years). Note: Halothane vaporizers - major overhaul required at 5 years. On vaporizers with interlock, test the function of the interlock system during the vaporizer calibration test.

9.2.2 Monitor

Follow the service recommendations detailed in the monitor user instruction manual.

9.2.3 AV800 / AV900 Ventilator

If the anaesthetic machine was supplied with an AV-series ventilator, follow the instructions given in section 7 of the user instruction manual. These include:

Every 6 months Inspection and Function Check

Every 6 months (or 1200 hours) Replace bellows

Every 12 months Replace O-seals and oxygen inlet filter, etc., as preventive maintenance.

Every 5 years Replace batteries Fit service-exchange pneumatic assembly

9.2.4 Anaesthetic Gas Scavenging System

Follow the service recommendations detailed in the AGSS user instruction manual.

9.2.5 Circle System Absorber

Follow the service recommendations detailed in the circle absorber user instruction manual.

SERVICING PROCEDURES

9.3 Cleaning and Sterilisation

Frequently wipe over the external surfaces of the machine, the vaporizers, with a damp cloth. Always allow the machine to dry off thoroughly before using it.

(Mild antiseptic solutions may be used but should be rinsed off with clean water.)

Breathing system hoses and other components must be sterilised to the manufacturer’s recommended methods.

Monitor

Refer to the monitor user instruction manual.

Ventilator

AV-series Ventilator Bellows Assembly Cleaning The user must follow the detailed instructions included in section 7.5 of the ventilator user instruction manual.

Never use any hard object or abrasive agent to clean any of the components, only a soft cloth.

If the valve seat is damaged, the diaphragm valve will leak and this may cause serious malfunction.

CAUTION

Do not use any cleaning solution containing alcohol or any harsh abrasive cleaning agent

on the bellows housing.

Sterilisation

The user must follow the detailed instructions included in section 7 of the ventilator user instruction manual.

WARNING

Do not autoclave the bellows housing. The exhalation diaphragm valve assembly must be disassembled prior to sterilisation - do not sterilise the diaphragm.

Gas System Components

(UK Specification 3-gas machine)

1. CGO block

2. Auxiliary outlet block

3. Reservoir (O2 - for whistle)

4. Low pressure block (O

5. High pressure block (O2)

6. Low pressure block (Air)

7. High pressure block (CO

8. Low pressure block (N

9. High pressure block (N2O)

10. High pressure regulator

11. Fresh gas pressure relief valve

12. Pipeline supply inlet block

13. Cut-off valve capsules

14. Secondary regulator (O

15. Secondary regulator (N2O)

2O)

16. Secondary regulator (Air) Note: a) Test points are mounted beneath

each secondary regulator. b) On 2002 machines, the regulators are mounted horizontally.

17. Hose from flowmeter

18. Fresh gas hose

19. O

2 flush hose

20. Manifold block

21. Test point - primary regulator

22. Warning whistle

23. Air/N

2O interlock switch

24. O2 failure visual indicator

25. Gas delivery switch

SERVICING PROCEDURES

9.4 Gas System Components

The illustration on the preceding page shows the components visible when the front cover is removed.

Machines with CO An additional high pressure block and regulator, and an additional cut-off valve capsule are fitted.

9.5 Internal Gas Pipework

9.5.1 Identification

Internal pipework is colour coded and diameter indexed, as follows:

Colour codes

Oxygen White (or Green, on US

specification machines) Nitrous Oxide Blue Medical Air Black/white (or Yellow

on US specification

machines) Carbon Dioxide Grey

Tubing diameter

Oxygen 8 mm Nitrous Oxide 6 mm Medical Air 5 mm Carbon Dioxide 4 mm

Mixed Gas 10 mm

SERVICING PROCEDURES

9.5.2 Tubing Connectors

Push-in type fittings are used throughout the low pressure circuit

To connect and disconnect the tubing from the connectors, follow the procedures detailed below.

Do not use excess force.

Disconnecting tubing from connector

Push in the tube and the connector end piece ‘A’.

Hold the end piece ‘A’ in place.

Pull the tube out to disconnect.

Fitting tubing to connector

Push in the tube as far as possible Do not use excessive force.

The connector end piece ‘A’ will also move inwards.

Pull the tube carefully outwards. The end piece ‘A’ will be pulled outwards to

the ‘locked’ position.

SERVICING PROCEDURES

9.5.3 Cascade Flowmeter

Assembly Tubing

The illustration shows the rear of a three-gas flowmeter assembly, with cascade oxygen and nitrous-oxide flowmeter assemblies, as fitted to a UK specification machine with mechanical AHD.

1. Oxygen supply

2. Oxygen - low flow tube to high flow

tube

3. Nitrous oxide - supply to primary nee-

dle valve

4. Nitrous oxide - link to secondary nee-

dle valve (mechanical AHD)

5. Nitrous oxide - low flow tube to high

flow tube

6. Air - supply to flowmeter needle valve

7. Mixed gas supply to backbar mani-

fold.

SERVICING PROCEDURES

9.6 Front Cover -

Remove and Refit

CAUTION

Ensure that any residual gas in the machine is exhausted before commencing the dismantling procedure.

Removal

1. Remove all cylinders, and disconnect Pipeline

supply hoses.

2. At the rear of the machine, slacken the screws

(1) securing the gas blocks.

3. Remove the two top fixing screws (2) securing

the panel to the front of the machine.

4. Slacken each screw (3) on the side of the

machine, to loosen the side clamp plates.

5. Carefully pull the cover (4) away from the front of

the machine.

Refit

6. Line up the cover with the gauges and switches.

7. Check that the clamp plate on each side of the

machine is positioned to allow the sides of the cover to fit between each plate and the frame.

8. Carefully push the cover into place.

9. Screw in the top fixings (2). Do NOT tighten.

10. Tighten the clamp plate screws (3).

11. Tighten the top fixings (2).

12. At the rear of the machine, tighten the screws (1)

SERVICING PROCEDURES

9.7 Flowmeter Cover

Removal

1. Slacken the screws (1) securing the

filler strip (2).

2. Remove the screws (3) and top

guard (4).

3. Remove the cover (5).

Refitting

4. Reverse the removal procedure.

SERVICING PROCEDURES

9.8 Gear Linkage - Reset

CAUTION

Ensure that any residual gas in the machine is exhausted before commencing the dismantling procedure.

Removal

1. Remove all cylinders, and disconnect

Pipeline supply hoses.

2. Remove the two screws (1) and con-

trol knob cover (2).

3. Check the condition of the gears and

grubscrews, and replace if necessary.

4. To reset the gears, first remove the O

gear (4) only.

5. Turn the Gas Delivery switch (5) to

On. Gently close the N so that the N2O flowmeter bobbin reseats.

NOTE

A) This valve is closed by turning the

needle anti-clockwise.

B) On machines with Air, set the

Air/N

2O interlock switch (6) to N2O).

6. Set the oxygen control valve so that a

basal flow of 150 ml/min of oxygen is supplied.

7. Remove the N

Carefully replace the O2 gear so that the gear stop (8) is positioned anticlockwise, and just touching the mechanical stop (9) in the front of the manifold block (see illustration).

8. Distance the inner face of the O

from the mechanical stop with a 0.1 mm feeler gauge. Tighten the grubscrews (10) to secure

2 gear.

the O

9. With the O2 gear against the stop,

replace the N that the front faces of the gears are flush, see X-X as illustrated. Note that the rear face of the N2O gear is closer to the manifold block than the O

2 gear.

Tighten the grubscrews (11) to secure

2O gear.

the N Apply a small amount of Molycote BG87 grease, evenly distributed, to

2 and N2O gear teeth.

the O

2O primary valve

2O gear (7).

2 gear

2O gear and push on so

0.1 mm

SERVICING PROCEDURES

Gas Flow

10. Check the gas flows. See Function Test,

section 6.7.

11. If the gas flows are inaccurate, small

adjustments can be made by adjusting the oxygen basal flow within the range 150 200 ml, and then using the secondary regulators, as follows.

12. Attach a pressure gauge to the test point

on each regulator (12 - oxygen, 13 nitrous oxide). At 5 L/min flow both regulators should be set at 275 kPa (40 psi), but adjustment is available from 261 to 289 kPa (35 to 41 psi).

13. If the N

should be increased to 289 kPa (41 psi), before the O kPa (35 psi).

14. Similarly, if the N2O flow is high, the O2

pressure should be increased, before the N2O pressure is reduced.

15. Carry out a full function test on the

machine, see section 6.

2O flow is low the N2O pressure

2 pressure is reduced to 261

SERVICING PROCEDURES

9.9 Control Valve Capsule

Removal/Replacement

CAUTION

Needle valves are designed to seal with a light torque only and may be damaged if tightened excessively.

Note: There are no user serviceable components within the flow control valve capsules (1, 2, and 3). This procedure relates only to the exchange of the complete, factory set, valves.

1. Remove all gas cylinders and discon-

nect all gas pipeline hoses.

CAUTION

Ensure that all gas supplies are exhausted before commencing these procedures. High pressure gas can ‘fire’ the valve out of the machine.

2. Remove the cover and flowmeter

knobs, as detailed in section 9.8.

3. If the O

2 valve capsule (1) is to be

removed, take off the O2 gear (4) by loosening the grubscrews (5).

4. Undo the two securing screws and washers (6) and withdraw the capsule (1).

5. To replace the flow control valve, lightly smear the O-seals (7) with Fomblin and insert the capsule into the manifold block.

6. Align the two slots (8) with the securing screw holes, and refit the screws and washers (6).

7. If necessary reset the gears, as detailed in section 9.8, and check the gas flows.

8. Replace the flowmeter knobs and cover.

9. Perform a function test, section 6.

SERVICING PROCEDURES

9.10 Oxygen Reservoir Removal/Replacement

1. Remove all oxygen cylinders and disconnect the oxygen pipeline hose.

CAUTION

Ensure that any residual gas in the machine is exhausted before commencing the dismantling procedure.

2. Remove the cover at the back of the machine to gain access to the rear of the flowmeter assembly.

3. Unscrew the nut (1) to release the oxygen reservoir (2) from the mounting bracket.

4. After refitting, perform a function test, section 6.

SERVICING PROCEDURES

9.11 Secondary Regulators

Check Pressure Settings

1. Remove the front cover (see 9.6).

2. Connect the test point on the Oxygen regulator (1) to a pressure gauge.

3. Set the O

4. Check that the O2 secondary regulator is set at 275 kPa ± 14 kPa (38 psi ± 3 psi), adjust if necessary.

5. If adjusted, function check the mechanical AHD system, sections 6.

6. Repeat the above procedure for the

O secondary regulator (2).

7. Replace the front cover, see section

9.6.

2 flow to 5 L/min.

Penlon Prima SP User manual

Specifications and Main Features

Frequently Asked Questions

User Manual