Models 3000, 3100 and 500, 505 Service Manual Issue A April 2002

Graseby Medical Ltd.

Vo l u m e t r i c I n f u s i o n P u m p s

Warnings Warnings tell you about dangerous conditions, that could lead to death or serious injury to the user or patient, that can occur if you do not obey all of the instructions in this manual. 1.

WARNING: You should ensure that the performance offered by the pump is fit for the intended purpose. Failure to do so may result in compromised function of the product, patient injury or user injury.

2.

WARNING: Do not use a faulty pump. If the pump detects a fault when it is first turned on, or if it develops a fault during operation then a continuous system alarm sounds. The pump must be referred to a suitably qualified technician or returned to Graseby Medical in order to have the fault rectified.

3.

WARNING: Before using the pump, it should be inspected for physical damage. The pump should not be used if damage is evident, and should be returned to service personnel for repair before being returned to use. Failure to do so may result in compromised function of the product, patient injury or user injury.

4.

WARNING: Do not use the pump if you detect any cracks, chips and loose or bent parts, or if the buttons do not move in and out freely when they are pressed. Failure to do so could cause inadvertent disconnection of the pumps.

5.

WARNING: Do not push or pull on the pumps, or the IV pole may tip over or the pumps fall to the floor. Do not try to remove modular connected pumps from the IV pole whilst they are joined together. Either of these could cause the administration set to separate from the fluid container thus spilling the medication, or the pumps themselves could be damaged.

6.

WARNING: Correct entry of data is essential in order to ensure that the intended infusion is performed. Before confirming any displayed data when setting up an infusion, you should ensure that it is correct. Failure to do so may result in compromised function of the product, patient injury or user injury.

7.

WARNING: Dose-rate calculation requires care in entering data. Refer to specific product drug labelling for information on appropriate administration techniques and dosages. Entering incorrect data may result in patient injury or death.

8.

WARNING: When delivering drugs in the epidural space, use only those medications specifically indicated for epidural use. Epidural administration of other drugs could result in serious patient injury or death.

9.

WARNING: The use of administration sets incorporating injection sites could lead to an improper or inappropriate infusion resulting in serious patient injury or death.

10. WARNING: Failure to clearly identify the pump and administration sets could lead to an improper or inappropriate infusion resulting in serious patient injury or death. 11. WARNING: Remove any air to prevent air embolism. The presence of air within the infusion can result in complications resulting in patient injury or death. 12. WARNING: To avoid over infusion, do not prime the infusion line when the administration set is connected to the patient. Over infusion can result in patient injury or death. 13. WARNING: The Occlusion alarm level must be checked before starting an infusion to ensure that it is appropriate for the infusion. Failure to do so may result in an unacceptably slow time to Occlusion alarm, resulting in patient injury or death. 14. WARNING: Prior to starting an infusion, inspect the fluid path for kinks, a closed clamp or other obstructions. Failure to do so may result in the infusion not being delivered correctly, resulting in patient injury or death. 15. WARNING: If using a blood pressure cuff above the patient’s venipuncture site take extra care in setting the Occlusion alarm pressures. Failure to do so may result in unnecessary Occlusion alarms, resulting in patient injury or death. 16. WARNING: The Occlusion detection system measures downline pressure in the administration set, but does not detect infiltration. In accordance with local protocol, you must periodically inspect the patient’s infusion site for signs of infiltration. Failure to do so may result in an unacceptably slow time to Occlusion resulting in patient injury or death. 17. WARNING: If an Occlusion alarm occurs, immediately clamp the line to the patient. Then inspect the fluid pathway to determine what has caused the obstruction. An unintentional bolus of medication can result in patient injury or death. 18. WARNING: Do not run parallel infusion lines below the pump. Delivering a Secondary infusion means running a second line above the pump. Failure to do so may result in an inaccurate delivery of medication, resulting in patient injury or death. 19. WARNING: Check the Secondary set carefully, since an occlusion above the pump on the Secondary line could cause the Primary fluid to be delivered instead of the Secondary infusion. Administering the wrong medication may cause serious patient injury or death.

3000/3100 and 500/505 Service Manual

Issue A (April 2002)

Vo l u m e t r i c I n f u s i o n P u m p s

Graseby Medical Ltd.

20. WARNING: The Secondary volume to be infused must match the amount of fluid in the secondary container. Primary flow resumes when the secondary container is empty. If the volumes do not correspond, the wrong infusion may be delivered which could cause serious patient injury or death. 21. WARNING: Correct management of battery charging, as described in this documentation is essential to ensure that the pump can operate on battery for the time specified. Failure to do so may result in compromised function of the product or patient injury. 22. WARNING: If a backup alarm sounds, the pump should be immediately removed from the patient and sent to be repaired by a Graseby Medical qualified technician. Failure to do so may cause patient injury or death. 23. WARNING: Failure to use the power cord retainer means that the pump may be accidentally or erroneously disconnected from the mains. Although there is a battery backup in case this happens, the battery may not be charged sufficiently. Consequently, there is a risk of the pump not functioning which could lead to patient injury or death. 24. WARNING: Do not open the pump housing. Refer all service faults only to qualified technical personnel. Opening the pump housing may cause electric shock leading to patient or user injury or death. 25. WARNING: When the pump is carrying out an infusion, to ensure that electrical safety is maintained, only items of equipment that conform to EN60950 are to be connected to the RS232 connector situated at the back of the pump, otherwise patient safety may be compromised. 26. WARNING: While Graseby Medical Limited have taken all reasonable steps to ensure that the pump operates correctly while under remote control, it is the responsibility of the person who designs and implements the controlling device to ensure that the resulting system (pump and controlling device) is fit for its intended purpose. Failure to do so may result in compromised function of the product, patient injury or user injury. 27. WARNING: Use only Graseby Medical administration sets with this product. Failure to do so may result in compromised system accuracy leading to complications resulting in patient injury or death. 28. WARNING: Do not perform these tests while the pump is in use on a patient, as this may cause patient injury or death. 29. WARNING: Unplug the AC power cord before opening the pump housing to avoid risk of electric shock, which could result in death or serious injury. 30. WARNING: Potentially dangerous voltages are exposed when the pump housing is open and the AC power cord is plugged in. These voltages are present in the transformer and AC fuse on the CPU/Power supply board and the RFI line filter where the power cord connects. To avoid electric shock with potential for severe injury or death, do not touch these areas when the power cord is plugged in.

Issue A (April 2002)

3000/3100 and 500/505 Service Manual

Graseby Medical Ltd.

Vo l u m e t r i c I n f u s i o n P u m p s

Cautions Cautions tell you about dangerous conditions that can occur and cause damage to the pump if you do not obey all of the instructions in this manual. 1.

CAUTION: Refer all service, repair and calibrations only to qualified technical personnel. Unauthorised modifications to the pump must not be carried out.

2.

CAUTION: Do not autoclave, steam sterilize, ETO sterilise or subject the pump to temperatures in excess of 45° C (113° F). Excessive temperatures may cause damage to the pump.

3.

CAUTION: To prevent serious damage to the pump it must not be immersed in any liquids or exposed to strong organic solvents. Wipe off spills immediately. Do not allow fluid or residues to remain on the pump. Additionally, the pump is not designed to allow it to be sterilised. Failure to observe these cautions may cause internal damage to the pump.

4.

CAUTION: Carry out periodic cleaning following the detailed instructions in this manual Do not use unapproved cleaning agents.

5.

CAUTION: When turning the pump on, if screens similar to those illustrated are not displayed, do not use the pump, and send the pump to authorised service personnel.

6.

CAUTION: Only carry the pump by the handle. Failure to do so may result in damage to the pump, or the pump may be dropped which could cause internal damage to the pump.

7.

CAUTION: The backlight has a limited life and may, if used constantly, cause the light to dim. Eventually the message display may then need to be replaced. To preserve the life of the message display, you should only turn on the Message Display Light as described here if it is specifically required. Misuse of this feature could lead to both battery and LCD depletion.

8.

CAUTION: The Functional and Accuracy Check should be performed following any significant disassembly or repair of the pumps.

9.

CAUTION: The circuit boards consist primarily of surface mounted technology, component level repairs are not recommended.

10. CAUTION: Disconnect the battery connection P104 on I/O board before disassembling the circuit boards to avoid circuit damage. After disconnecting P104, press the On/Off key twice to discharge the circuitry. 11. CAUTION: Handling of printed circuit boards is required during disassembly/assembly. A static controlled work station including a conductive mat and grounded wrist strap should be used to provide protection against electrostatic discharge (ESD) or circuit board damage could result. 12. CAUTION: Do not use a screwdriver or other sharp instrument to separate the front and rear housing as this action could cause pump damage. 13. CAUTION: Do not damage or puncture the kapton tape. If the tape is damaged or punctured it could result in the pump not being ESD protected. Special care should be taken when placing the kapton tape and also when assembling the front and rear cases together as the front case lugs may puncture the tape. 14. CAUTION: Crossed wires must be shielded with suitable insulation as described. Failure to carry out the procedure as specified may result in permanent damage to the LCD.

3000/3100 and 500/505 Service Manual

Issue A (April 2002)

Vo l u m e t r i c I n f u s i o n P u m p s

Issue A (April 2002)

Graseby Medical Ltd.

3000/3100 and 500/505 Service Manual

Graseby Medical Ltd.

Vo l u m e t r i c I n f u s i o n P u m p s

Published by Graseby Medical Limited. All possible care has been taken in the preparation of this publication, but Graseby Medical Limited accepts no liability for any inaccuracies that may be found. Graseby Medical reserves the right to make changes without notice both to this publication and to the product which it describes. ©

Graseby Medical Limited 2002

No part of this publication may be reproduced, transmitted, transcribed, or stored in a retrieval system or translated into any human or computer language in any form by any means without the prior permission of Graseby Medical Limited. GRASEBY MEDICAL LTD, Colonial Way, Watford, Hertfordshire, UK WD24 4LG TEL: FAX: WEB:

(+44) (0)1923 246434 (+44) (0)1923 231595 www.graseby.co.uk

REGISTERED IN ENGLAND COMPANY No. 995550

Trademarks and acknowledgements: “Graseby”; and Smiths are all trademarks of the Smiths Group plc. All other trademarks are acknowledged as the property of their respective owners.

3000/3100 and 500/505 Service Manual

Issue A (April 2002)

Contents - i

Vo l u m e t r i c I n f u s i o n P u m p s

Graseby Medical Ltd.

ISSUE RECORD Issue No. A

Contents - ii

Reason for change

Pages effected

Date

Initial issue

All

April 2002

Issue A (April 2002)

3000/3100 and 500/505 Service Manual

Graseby Medical Ltd.

Vo l u m e t r i c I n f u s i o n P u m p s

Contents Chapter 1 - Introduction Introduction Scope of this manual ... 1 - 1 Related manuals ... 1 - 1 Graseby service contacts ... 1 - 1 Product Overview ... 1 - 2 System description ... 1 - 2 Optional labels ... 1 - 2 Software versions ... 1 - 2

Chapter 2 - Specification Specifications... 2 - 1 Standards ... 2 - 8 Trumpet curves ... 2 - 9

Chapter 3 - Overview of Pump Operation and Initial Checks Overview of Pump Operation & Initial Checks ... 3 - 1 Exterior of the 500/3000 pump - front ... 3 - 2 Exterior of the pump - rear ... 3 - 3 How the pump is powered ... 3 - 4 How the pump works ... 3 - 5 Power up tests and checks ... 3 - 9 Powering down ... 3 - 12 Power monitoring ... 3 - 13 Alarms ... 3 - 15

Chapter 4 - Volumetric Pumps Menus Volumetric Pump Menus ... 4 - 1 Which version of software is in the pump? ... 4 - 1 Introduction to menus ... 4 - 1 About the Technician menu ... 4 - 2 Summary of Technician menu parameters ... 4 - 3 Using Technician parameters ... 4 - 4 About the Biomedical menu ... 4 - 8 Summary of Biomedical menu parameters ... 4 - 10

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About Snapshot screens ... 4 - 11 Decoding Snapshot screen-a... 4 - 12 Decoding Snapshot screen-b... 4 - 15 Using Biomedical Parameters ... 4 - 22 Enabling special programming functions ... 4 - 27 About the Service Functions menu ... 4 - 29 Service Functions menu parameters ... 4 - 30

Chapter 5 - Mechanical Systems Mechanical Systems ... 5 - 1 Linkage system ... 5 - 1 Cassette housing and door ... 5 - 2 Safety clip retention slot ... 5 - 2 Cam housing switch and safety clip switch ... 5 - 4 Cam housing ... 5 - 4 Stepping motor ... 5 - 4 Cams, pistons and valves of the pumping mechanism ... 5 - 6 Encoder wheel and interrupter ... 5 - 9 Empty bag contacts ... 5 - 10 Sensors ... 5 - 10 Pole clamp and IV pole ... 5 - 12 Modular connection system ... 5 - 12

Chapter 6 - Electronic Circuits Electronic Circuits ... 6 - 1 Definitions... 6 - 1 Functional block diagram ... 6 - 1 System control ... 6 - 2 Power ... 6 - 2 Interconnection summary ... 6 - 3 PCB design ... 6 - 3 CPU/power supply board ... 6 - 3 Power supply ... 6 - 9 I/O board ... 6 - 11 Display board ... 6 - 14 RS232 interface ... 6 - 17

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Vo l u m e t r i c I n f u s i o n P u m p s

Chapter 7 - Maintenance Procedures Maintenance Procedures ... 7 - 1 Introduction... 7 - 1 Recommended test equipment ... 7 - 2 Recommended troubleshooting equipment ... 7 - 2 Service tool kit ... 7 - 3 Periodic cleaning ... 7 - 4 Recommended yearly checks and tests... 7 - 6 Recommended Functional & Accuracy Tests: Checklist ... 7 - 18 Troubleshooting ... 7 - 19 Replacing the LCD ... 7 - 23 Reinitialising the pump after replacing the NVRAM (IC18) ... 7 - 25 Adjustment of the “Cassette Fitted” micro switch ... 7 - 32

Chapter 8 - Disassembly and Reassembly Instructions Disassembly and reassembly instructions ... 8 - 1 Battery removal ... 8 - 1 AC fuse removal ... 8 - 1 Front housing removal ... 8 - 2 Door assembly removal ... 8 - 3 CPU/Power supply board removal ... 8 - 5 I/O board assembly removal ... 8 - 6 Display board assembly removal ... 8 - 7 Membrane switch replacement - old case ... 8 - 8 Membrane switch replacement - new case ... 8 - 9 Pump assembly removal ... 8 - 10 Motor assembly removal ... 8 - 11 Realignment of motor coupler... 8 - 12 Cassette housing disassembly ... 8 - 13 Safety clip mechanism disassembly ... 8 - 13 Cam housing switch disassembly ... 8 - 14 Calibration and adjustment of components ... 8 - 15 Cam housing switch adjustment ... 8 - 15 Occlusion alarm adjustment ... 8 - 16 Voltage Checks ... 8 - 18 Power supply voltage check ... 8 - 18 Low and dead battery alarm check ... 8 - 21

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Chapter 9 - Illustrated Parts List Illustrated Parts List for pump Serial numbers from 3000 to 60,000 ... 9 - 1 General assembly of the volumetric pump ... 9 - 2 Pump assembly ... 9 - 8 Rear housing assembly ... 9 - 9 Display board assembly ... 9 - 12 CPU power supply/RS232 board assembly ... 9 - 14 I/O board assembly ... 9 - 16 Illustrated Parts List for Serial numbers from 60,000 ... 9 - 17 General assembly of the volumetric pump ... 9 - 18 Pump assembly ... 9 - 22 Rear housing assembly ... 9 - 23 Display board assembly ... 9 - 25 CPU power supply/RS232 board assembly ... 9 - 26 I/O board assembly ... 9 - 27

Chapter 10 - Electrical Diagrams Electrical Diagrams ... 10 - 1 Introduction... 10 - 1 Overall functional block diagram ... 10 - 2 Power routeing block diagram ... 10 - 3 Electrical routeing block diagram ... 10 - 4 Display board schematic ... 10 - 5 CPU/Power supply schematic (sheet 1 of 3) ... 10 - 6 CPU/Power supply schematic - CE (sheet 2 of 3) ... 10 - 7 CPU/Power supply circuit (sheet 3 of 3) ... 10 -8 Input/Output schematic ... 10 -9 RS232 schematic ... 10 -10

Chapter 11 - Waveform Diagrams Waveform Diagrams... 11 - 1 Introduction... 11 - 1

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Vo l u m e t r i c I n f u s i o n P u m p s

Chapter 12 - Remote monitoring and controlling of the pump Remote monitoring and controlling of the pump ... 12 - 1 Introduction... 12 - 1 Organisation of this chapter ... 12 - 1 Summary of commands - Version 0.67 and below... 12 - 2 Protocol definition ... 12 - 2 Record Format - Version 0.67 and below ... 12 - 3 Command Codes ... 12 - 3 Error Processing ... 12 - 7 Summary of hardware connection and handshaking ... 12 - 7 Example Commands ... 12 - 8 Interfacing with pump software version 0.68 and above ... 12 - 9 Model 3000/500 3100/505 Computer Interface ... 12 - 9 Protocol Definition ... 12 - 9 Character ... 12 - 9 Format - version 0.68 and above ... 12 - 10 Command Record Format - version 0.68 and above ... 12 - 11 Return Record Format ... 12 - 15 Command Summary ... 12 - 18 Pump Powered Down - AC/Battery ... 12 - 23 Exiting CI Mode - Terminated vs. Disabled ... 12 - 23 Response Time-outs and Error Processing ... 12 - 24 Summary of Handshaking and Hardware Connection ... 12 - 24 Example Commands ... 12 - 25

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Introduction Chapter 1

Graseby Medical Ltd.

Vo l u m e t r i c I n f u s i o n P u m p s

Introduction

1

Scope of this manual This manual is aimed at service personnel to enable them to service and repair the Volumetric range of pumps. It has been revised and updated to cover the Version 0.71 pump software, and where appropriate it describes and illustrates the revised case design (for pumps with serial numbers from 60,000). However, the manual is backwards compatible with all earlier versions of pump software and case design.

Related manuals Refer to the Instruction Manual and Technical User Manual when more detailed operating information is required, since this is outside the scope of the Service Manual. The following manuals are applicable to the Volumetric Infusion Pumps with Version 0.71 software and are listed in Chapter 9 Illustrated Parts List: •

Instruction Manual and Technical User Manual - old case design, see pages 9-6 and 9-7 for part numbers

•

Instruction Manual and Technical User Manual - new case design, see page 9-21 for part numbers

The Instruction Manuals for Version 0.67 and earlier software are listed in the first section of Chapter 9 Illustrated Parts List, see page 9-6.

Graseby service contacts If you have any queries or problems with your pump that cannot be solved by this manual, please contact the appropriate Service Centre.

UK service address GRASEBY MEDICAL LIMITED COLONIAL WAY WATFORD HERTFORDSHIRE WD24 4LG ENGLAND

TEL:

(+44) (0)1923 246434

FAX:

(+44) (0)1923 447773

Website: www.graseby.co.uk

USA service address DELTEC INC. 1265 GREY FOX ROAD ST PAUL MINNESOTA 55112 U.S.A. 3000/3100 and 500/505 Service Manual

TEL: 001 651 633 2556 TOLL FREE 0800 433 5832 FAX: 001 651 628 7459 Website: www.deltec.com

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Product Overview

1 System description The Model 3000/500 and Micro 3100/505 Volumetric Infusion pumps, including the dedicated administration sets, are for use by trained medical professionals in the intravenous and intra-arterial delivery of fluid and medications. In addition, they may be used for epidural delivery. Note: Graseby Volumetric Infusion Pumps are also known as the Model 500 and Micro 505. With the exception of the numbering the 3000/500 and the 3100/505 versions of the pumps are identical.

Optional labels To assist users to differentiate the pump and IV set being used for epidural delivery, from those being used for other infusions, a yellow Epidural Label Set for the Volumetric Infusion Pump (part no. TPF00306) is available from Graseby Medical Ltd.

Software versions If a pump label lists more than eight options, Version 0.71 software is installed. If there are fewer options, the pump has an earlier version of software. You can find out the software version of the pump by checking on the Biomedical Menu, see Chapter 4, Volumetric Pump Menus.

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About Version 0.71 The new software contains some completely new features as well as improvements to existing features. These include many new configurable options such as selectable default settings for the occlusion alarm levels, Primary/Secondary Rate and Volume to be Infused selectable minimum and maximum limits, drug library and bolus functions. Added to this, the Quick Rate Change option is now a configurable feature, and may be enabled or disabled as required. For a complete list of the functions please see the new Volumetric Instruction Manual and the Technical User Manual. Upgrading to Version 0.71 It is possible to upgrade earlier Graseby Medical Volumetric range pumps to the latest software version 0.71. For 3000/500 pumps order part no. 0150-0671 and for 3100/505 pumps order part no. 0150-0672 (note these are English only kits). The upgrade kit contains the following items: •

V0.71 CPU Board Prom

•

3.66A Display Prom

•

Keypad Overlay (3000/500, 3100/505)

•

Keypad

•

Start up Label

•

Overlabel (3100/505)

•

Lower door recess label

•

Instruction Manual

•

Technical User Manual

•

Instructions for upgrade.

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Specification Chapter 2

Graseby Medical Ltd.

Vo l u m e t r i c I n f u s i o n P u m p s

Specifications General Weight

5 kg (11 pounds).

Dimensions

for pumps with serial numbers from 3000 to 59,999 including pole clamp Height 25 cm (10 inches). Width 21.5 cm (8.6 inches). Depth 23.5 cm (9.45 inches). for pumps with serial numbers from 60,000 including pole clamp Height 28 cm (11 inches). Width 21.5 cm (8.6 inches). Depth 23.5 cm (9.45 inches).

Temperature

Operating 18° to 40° C (64° to 104° F) Storage -25° to +55° C (-13° to 131° F).

Relative humidity

Operating 30% to 75% (non-condensing). Storage 30% to 75% (non-condensing).

Pressure range

Operating 50 kPa to 106 kPa Storage 19 kPa to 106 kPa

Immunity levels

Immunity levels are the full levels specified in EN60601-1-2 (radiated immunity is 3 V/m and ESD immunity is 3 kV contact and 8 kV air).

Free flow protection

The pump mechanism operates the safety clip on the administration set.

Head-height

From bottom of drip chamber to top of pump Model 3000/500

15 cm (6 ins) minimum for flow rates <500 mL/h 30 cm (12 ins) minimum for flow rates >500 mL/h 30 cm (12 ins) when using 60 drops/mL sets 30 cm (12 ins) when using thick solutions*

Micro 3100/505

15 cm (6 ins) minimum 30 cm (12 ins) when using 60 drops/mL sets 30 cm (12 ins) when using thick solutions* * certain cytotoxic agents, lipid-based fluids and other viscous solutions, for example Total Parenteral Nutrition.

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Graseby Medical Ltd.

Self test

Dual microprocessors independently test each other.

Maximum over infusion

Under a single-fault condition, the maximum over infusion that may occur is 12.5% over the selected flow rate. Larger inaccuracies are detected by the pump, and cause it to stop infusing and to alarm.

Air detect system

Air bubbles are detected by electronic optoencoder detection device (with self-checking sensors) located on cassette housing.

Accuracy

± 2% of displayed rate and volume to be infused. The quoted accuracy is ±2% for a long-term infusion. Below rates of 1 mL/h this accuracy may not be achieved for a short-term infusion. During the total infusion time the accuracy averages out (see trumpet curves in this chapter).

Accuracy measurement equipment

Test solution

50 mL glass measurement burette graduated in 0.1 mL increments and traceable to National Institute of Standards and Technology or appropriate international standards bureau. Sterile water or normal saline at room temperature (70°F ±5°/21°C ±3°). Graseby standard (primary), 20 drops/mL, noncheckvalve administration set (8C820).

Testing conditions Model 3000/500

Micro 3100/505

fluid level in the solution container 46 cm (18 inches) above top of the pump, rate set at 999 mL/h and volume to be infused of 49 mL. fluid level in the solution container 46 cm (18 inches) above top of the pump, rate set at 99.9 mL/h and volume to be infused of 25.0 mL.

Accessories For a complete list of Administration Sets, please contact Graseby Medical or your local distributor.

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Power AC power supply

Internally configured for either 100-120 V AC, 200 mA, 50/60 Hz. or, 220-240 V AC, 80 mA, 50/60 Hz.

Battery type

Rechargeable, sealed lead-acid, 12 Volt, 1.3 Ah.

Battery operating time

6 hours at 100 mL/h (99.9 mL/h on Micro 3100/505), with approximately 1/2 hour warning of discharged battery.

Battery recharge time

Approximately 10 hours, depending on the operating conditions. The batteries will be charging during an infusion.

Leakage current

100 to 120 V less than 20 microamps ungrounded or, 220 to 240 V less than 50 microamps ungrounded This is measured between the ground stud and the earth protective prong of the AC mains connector.

Over-current protection Voltage

AC line fuse

Thermal fuse

Battery fuse

100 to 120 V

200 mA

130°

1.0 amp

220 to 240 V

2 x 80 mA

130°

1.0 amp

Note: All fuses are time delay fuses

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