Valleylab Argon Gas Delivery Unit II User manual

Service Manual

Valleylab™

Argon Gas Delivery Unit II

1012506

Valleylab Argon Gas Delivery Unit II Service Manual i

Preface

This manual and the equipment it describes are for use only by qualified medical professionals trained in the particular technique and surgical procedure to be performed. It is intended as a guide for servicing the Force FX Electrosurgical Generator C only. Additional users information is available in the Valleylab Argon Gas Delivery Unit II User’s Guide.

Equipment covered in this manual:

Valleylab Argon Gas Delivery Unit II (Force Argon II-20) 120 VAC nominal, 50–60 Hz

The Valleylab Argon Gas Delivery Unit II Service Manual consists of two parts: the text (part 1 of 2) and a Schematics Supplement (part 2 of 2) which contains the schematics.

Conventions Used in this Guide

Warning

Indicates a potentially hazardous situation, which if not avoided, could result in death or serious injury.

Caution

Indicates a hazardous situation, which if not avoided, may result in minor or moderate injury.

Notice

Indicates a hazard which may result in product damage.

Important

Indicates an operating tip or maintenance suggestion.

ii Valleylab Argon Gas Delivery Unit II Service Manual

Limited Warranty

Covidien warrants each covered product listed below to be free from defects in material and workmanship for normal use and service for the period(s) set forth below. Covidien’s obligation under this warranty is limited to the repair or replacement, at its sole option, of any product, or part thereof, which has been returned to it (or its authorized distributor) within the applicable time period shown below after delivery of the product to the original purchaser, and which examination discloses, to Covidien’s satisfaction, that the product is defective. This limited warranty does not apply to any product, or part thereof, which has been repaired or altered in a way so as, in Covidien’s judgment, to affect its stability or reliability, or which has been subjected to misuse, neglect, or accident.

The warranty periods for Covidien products are as follows:

ForceTriadTM Energy Platform One year from date of shipment

Electrosurgical Generators One year from date of shipment

Cool-tip

EvidentTM MWA Generator One year from date of shipment

RFG-3C

LigaSure

RFA Generator One year from date of shipment

Plus Lesion Generator One year from date of shipment

Vessel Sealing System One year from date of shipment

LigaSureTM Reusable Instruments One year from date of shipment

Mounting Fixtures (all models) One year from date of shipment

Footswitches (all models) One year from date of shipment

Valleylab

RapidVac

LigaSure

Argon Gas Delivery Unit II One year from date of shipment

Smoke Evacuator One year from date of shipment

Sterile Single Use Items Sterility only as stated on packaging

Cool-tipTM Sterile Single Use Items Sterility only as stated on packaging

Sterile Single Use Items Sterility only as stated on packaging

Patient Return Electrodes Shelf life only as stated on packaging

Notwithstanding any other provision herein or in any other document or communication, Covidien’s liability with respect to this limited warranty and the products sold hereunder shall be limited to the aggregate purchase price for the products sold to the customer. This limited warranty is non-transferable and runs only to the original purchaser of the

Valleylab Argon Gas Delivery Unit II Service Manual iii

covered product(s). There are no warranties which extend beyond the terms hereof. Covidien disclaims any liability hereunder or elsewhere in connection with the sale of products and for any form of indirect, tort, or consequential damages.

This limited warranty and the rights and obligations hereunder shall be construed under and governed by the laws of the State of Colorado, USA. The sole forum for resolving disputes arising under or relating in any way to this limited warranty is the District Court of the County of Boulder, State of Colorado, USA.

Covidien reserves the right to make changes in covered products built or sold by it at any time without incurring any obligation to make the same or similar changes to equipment previously built or sold by it.

THE OBLICATION TO REPAIR OR REPLACE A DEFECTIVE OR NONPERFORMING PRODUCT IS THE SOLE REMEDY OF THE CUSTOMER UNDER THIS LIMITED WARRANTY. EXCEPT AS

EXPRESSLY PROVIDED HEREIN, COVIDIEN DISCLAIMS ALL OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, WITH RESPECT TO PRODUCTS, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

iv Valleylab Argon Gas Delivery Unit II Service Manual

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Conventions Used in this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Chapter 1. Introduction

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

List of Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Service Personnel Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

General Service Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Fire/Explosion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Electric Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

High Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Argon Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Chapter 2. Controls, Indicators, and Receptacles

Valleylab Argon Gas Delivery Unit II

Front Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Overpressure System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

System Purge Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Gas Flow Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Gas Tank Indicators and Controls . . . . . . . . . . . . . . . . . . . . . 2-3

Gas Lines and Receptacles. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Chapter 3. Technical Specifications

Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Standard Conditions of Measurement . . . . . . . . . . . . . . . . . 3-2

Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Storage and Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Input Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Low Frequency Leakage (50Hz – 60 Hz). . . . . . . . . . . . . . . . 3-2

Gas Flow Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Audio Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Approximate Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Gas Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Power Cord Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Standards and IEC Classifications . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Type CF Equipment (IEC 60601-1) /Defibrillator Proof . . . . 3-4

Liquid Spillage (IEC 60601-2-2 Clause 44.3) . . . . . . . . . . . . . 3-4

Valleylab Argon Gas Delivery Unit II Service Manual v

EMC Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Electromagnetic Compatibility (IEC 60601-1-2 and

IEC 60601-2-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Chapter 4. Principles of Operation

Functional Descriptive Overview . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Circuit Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Main Microprocessor (Control Board, sheet 2 of 8). . . . . . . 4-2

RS-232 Interface (Control Board, sheet 2 of 8). . . . . . . . . . . 4-2

Address Latches and I/O Decoders (Control Board,

sheet 2 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Solenoid Drivers (Control Board, sheet 3 of 8). . . . . . . . . . . 4-3

Audio Amplifier (Control Board, sheet 3 of 8). . . . . . . . . . . 4-3

Solenoid Master Power Switch (Control Board,

sheet 3 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Watchdog Circuitry (Control Board, sheet 4 of 8) . . . . . . . . 4-3

Malfunction Microprocessor (Control Board, sheet 4 of 8). 4-4 Argon Gas Tank Pressure Scale (Control Board,

sheet 4 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Display Interface and Lamp Drivers (Control Board,

sheet 4 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Argon Gas Tank Detection and Measurement (Control Board,

sheet 5 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Pressure Transducers (Control Board, sheet 6 of 8 and

sheet 7 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Overvoltage Monitors (Control Board, sheet 6 of 8). . . . . . 4-5

A-D Converter (Control Board, sheet 6 of 8) . . . . . . . . . . . . 4-5

DC Power Connector (Control Board, sheet 6 of 8). . . . . . . 4-5

IsoBloc Circuit Modules (Control Board, sheet 8 of 8) . . . . . 4-5

Lamps and LEDs (Display Board, sheet 2 of 4) . . . . . . . . . . . 4-5

Switch Read Buffer (Display Board, sheet 2 of 4) . . . . . . . . 4-6

Bar Graph Display Driver (Display Board, sheet 3 of 4) . . . . 4-6

Seven Segment Display Driver (Display Board,

sheet 4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

ESU Interface Connector (Footswitch Board, sheet 1 of 1) . 4-6 Footswitch Connector (Footswitch Board, sheet 1 of 1) . . . 4-6

Speaker (Footswitch Board, sheet 1 of 1). . . . . . . . . . . . . . . 4-6

Software Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

vi Valleylab Argon Gas Delivery Unit II Service Manual

Chapter 5. Setup, Tests, and Adjustments

Setting up the Valleylab Argon Gas Delivery Unit II . . . . . . . . . 5-2

Unpacking and Installing the Unit . . . . . . . . . . . . . . . . . . . . 5-2

Connecting the Argon Gas Tank(s). . . . . . . . . . . . . . . . . . . . 5-2

Constructing an Extended Length Argon Gas Supply Hose 5-3 Removing the argon gas supply hose from the Valleylab Argon

Gas Delivery Unit II System . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Connecting the Electrosurgical Generator and Accessories 5-5

General Test Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Mechanical Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Initialization Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Functional Test with Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Chapter 6. Troubleshooting

Inspecting the Valleylab Argon Gas Delivery Unit II . . . . . . . . . 6-2

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Nonfatal Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Fatal Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Error Code Download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Power Supply Board Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Cable Connection Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Footswitch Board Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Footswitch Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

ESU Interface Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Front Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Argon Control Assembly Test . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Description of Valve Operation . . . . . . . . . . . . . . . . . . . . . 6-14

Test Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

Testing Tanks 1 and 2, and the Release Solenoid Valves . 6-15

Testing the Orifice and Flow Control Solenoid Valves . . . 6-15

Testing the Peritoneal Directional Solenoid Valve . . . . . . 6-16

Chapter 7. Replacement Procedures

Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Valleylab Argon Gas Delivery Unit II Spare Components . . . . . 7-2

Front Bezel and Display Board Replacement . . . . . . . . . . . . . . . 7-3

Valleylab Argon Gas Delivery Unit II Service Manual vii

Power Switch Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Power Supply Board Replacement . . . . . . . . . . . . . . . . . . . . . . . 7-5

Footswitch Board Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

AC Inline Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Internal Argon Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . 7-9

Argon Control Valve Assembly/Second Stage Regulator

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

Control Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

Fuse Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

Argon Gas Tank Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

Chapter 8. Repair Policy and Procedures

Responsibility of the Manufacturer . . . . . . . . . . . . . . . . . . . . . . 8-2

Obtaining a Return Authorization Number . . . . . . . . . . . . . . . . 8-2

Returning Circuit Boards and Other Subassemblies. . . . . . . . . . 8-2

Returning the Valleylab Argon Gas Delivery Unit II for Service 8-3

Cleaning the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Shipping the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Disposing of the Valleylab Argon Gas Delivery Unit II. . . . . . . . 8-4

Service Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Chapter 9. Service Parts

Ordering Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Valleylab Argon Gas Delivery Unit II Assembly . . . . . . . . . . . . . 9-3

Argon Gas Delivery Unit II Parts List . . . . . . . . . . . . . . . . . . . 9-4

Footswitch Board Components . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Display Board Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

Control Board Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

viii Valleylab Argon Gas Delivery Unit II Service Manual

Chapter 1

Introduction

This manual provides instructions for servicing the Valleylab Argon Gas Delivery Unit II. This chapter introduces the features and components of the unit and reviews the precautions associated with repair.

Introduction

Valleylab Argon Gas Delivery Unit II Service Manual 1-1

General Description

The Valleylab Argon Gas Delivery Unit II System is designed to provide a controlled flow of argon (an inert, nonreactive gas) over the active electrode of an electrosurgical accessory which is powered by a Force series electrosurgical generator. A variety of handsets provide argon-enhanced electrosurgery as well as standard electrosurgery.

Argon-enhanced coag permits the coagulation of certain tissue in a more controlled manner than with standard electrosurgical coagulation.

In argon-enhanced coag, activating the handset creates an argon gas plasma between the electrode and the tissue. The presence of inert gas at the surgical site inhibits combustion with other gases (e.g., oxygen, nitrogen, etc.) and pushes residual smoke, water vapor, or fluids away from the surgical site, thereby improving visibility.

The Valleylab Argon Gas Delivery Unit II has an overpressure system that continuously measures peritoneal cavity pressure in real-time. This system operates when the unit is in the low flow range for argon gas (0.5 - 4 LPM), i.e. the gas flow range for laparoscopic procedures. Use the overpressure system in conjunction with a carbon dioxide insufflator monitor.

The overpressure system senses when the peritoneal cavity pressure meets or exceeds the user selectable setpoint (between 5 and 30 mm Hg). As the peritoneal cavity pressure approaches the setpoint, the Overpressure indicator on the front panel illuminates, and an intermittent alarm sounds. When the peritoneal cavity pressure meets or exceeds the setpoint, the Overpressure indicator on the front panel illuminates, and a continuous alarm sounds.

List of Components

The Valleylab Argon Gas Delivery Unit II is shipped with the following components:

• Valleylab Argon Gas Delivery Unit II

• ESU Interface Cable

• E0502-12 Active Adapter

• Argon Gas Tank Regulator Assembly for Tank 1

•Power Cord

• Power cord retaining clip

• User’s Guide, Service Manual, Reference Card

1-2 Valleylab Argon Gas Delivery Unit II Service Manual

Service Personnel Safety

Before servicing the Valleylab Argon Gas Delivery Unit II, it is important that you read, understand, and follow the instructions supplied with the unit and with any other equipment used to install, test, adjust, or repair the unit.

General Service Precautions

Caution

The unit contains electrostatic sensitive components. When repairing the unit, work at a static control workstation. Wear a grounding strap when handling electrostatic sensitive components. Handle the circuit boards by their nonconductive edges. Use an antistatic container for transport of electrostatic sensitive components and circuit boards.

Introduction

Notice

Connect the power cord to a wall receptacle having the correct voltage. Otherwise, product damage may result.

If required by local codes, connect the unit to the hospital equalization connector with an equipotential cable.

Fire/Explosion

Warning

Do not install the Valleylab Argon Gas Delivery Unit II System in the presence of flammable anesthetics, gases, liquids, or objects.

Always use high purity grade (99.998% pure or better) argon gas. Do not use oxygen for any adjustments. Oxygen regulation values differ from argon regulation values, and incorrect adjustments result.

For continued protection against fire hazard, replace fuses only with those having the same type and rating as the original fuse.

Fire Hazard Do not place active accessories near or in contact with flammable materials (such as gauze or surgical drapes). Electrosurgical accessories that are activated or hot from use can cause a fire. Use a holster to hold electrosurgical accessories safely away from personnel and flammable materials.

Valleylab Argon Gas Delivery Unit II Service Manual 1-3

Service Personnel Safety

Electric Shock

Warning

Disconnect the power cord before replacing parts.

Always unplug the Valleylab Argon Gas Delivery Unit II before cleaning.

Do not connect a wet power cord assembly to the unit or a wall receptacle.

Ensure that all accessories and adapters are correctly connected and that no metal is exposed.

The interface cable must be connected to the Valleylab Argon Gas Delivery Unit II and the electrosurgical generator for operation. If the Valleylab Argon Gas Delivery Unit II is not being used, disconnect the power cord from the wall receptacle.

Do not touch any exposed wiring or conductive surface while the unit is disassembled and energized. Never wear a grounding strap when working on an energized unit. Otherwise, damage to circuit board components may result.

Take appropriate precautions (such as use of isolated tools and equipment; use of the “one hand rule,” etc.) when taking measurements or troubleshooting the unit.

The front heatsink on the power supply is at an elevated voltage. Do not come in contact with it. Do not use it for ground. Otherwise, burns to service personnel may result. Damage to circuit board components may result.

Caution

When attaching the Argon Handset, ensure that the RF jumper cable is disconnected from the RF Input receptacle on the Valleylab Argon Gas Delivery Unit II front panel.

High Pressure

Warning

Ensure that argon gas tanks and fittings used with the Valleylab Argon Gas Delivery Unit II have been pressure tested, certified, and filled according to applicable standards and local codes. In filling the tanks, ensure your supplier meets all local and national codes. Do not over pressurize the tanks. Do not exceed 3,000 psig.

Use only the high pressure regulator supplied with the Valleylab Argon Gas Delivery Unit II. Order replacement regulators from Valleylab. Argon gas pressure should not exceed 434 KPa (63 psig) ± 5% at the regulator hose connection to the receptacle on the rear panel.

Always ensure that the regulator tank fitting is properly connected to the tank valve outlet.

Caution

Improperly secured gas tanks and/or improper connection of gas lines may result in injury.

1-4 Valleylab Argon Gas Delivery Unit II Service Manual

Service Personnel Safety

Argon Gas

Warning

Use only high purity grade (99.998% pure or better) argon gas. Patient safety may be compromised by using low purity gas.

The regulator coupling in this unit is compatible with many common gas tanks (e.g., Freon, helium, krypton, neon, nitrogen, and xenon). Only connect argon gas to the Valleylab Argon Gas Delivery Unit II. Using other gases may affect gas flow, create phosgene or other harmful gases, or create an explosion hazard.

Cleaning

Notice

Do not clean the unit with abrasive cleaning or disinfectant compounds, solvents, or other materials that could scratch the panels or damage the generator.

Introduction

Valleylab Argon Gas Delivery Unit II Service Manual 1-5

Chapter 2

Controls, Indicators, and Receptacles

The controls, indicators and receptacles for accessories are located on the front and rear panels of the Valleylab Argon Gas Delivery Unit II. This chapter describes each component of the unit and its function.

Controls, Indicators, and

Detailed specifications for the unit are in Chapter 3, Technical Specifications.

Receptacles

Valleylab Argon Gas Delivery Unit II Service Manual 2-1

Valleylab Argon Gas Delivery Unit II Front Panel Descriptions

Overpressure System

This system operates only when the Valleylab Argon Gas Delivery Unit II System is in the low gas flow range. Use only this range for laparoscopic procedures.

Overpressure Setpoint Display - The display shows the overpressure setpoint (available only when using the low flow range).

Overpressure Indicator - As the peritoneal cavity pressure approaches the overpressure setpoint, this indicator illuminates and an intermittent alarm sounds. When the peritoneal cavity pressure meets or exceeds the setpoint, this indicator remains illuminated and a continuous alarm sounds.

Peritoneal Pressure Display - The display indicates the peritoneal cavity pressure (available only when using the low flow range). The display flashes when the pressure is below 1 mm Hg.

Overpressure On/Off Switch - Press this button to turn peritoneal cavity pressure monitoring on or off (available only when using the low flow range).

Overpressure Control Knob - To increase (+) the alarm setting, turn the knob clockwise. To decrease (-) the alarm setting, turn the knob counterclockwise.

Setpoint Symbol

System Purge Control

Handset Tubing or Peritoneal Pressure Tubing Obstruction Indicator - When a gas

tubing obstruction occurs, the indicator illuminates and an alarm sounds. The Gas Flow indicator or the Overpressure indicator will also be flashing.

Gas Line Purge Button - Pressing this button removes air and causes a brief discharge of argon gas through the handset tubing at a gas flow of 3.0 LPM.

Gas Flow Controls

Gas On/Gas Off Button - Press this button to select gas on or gas off.

Gas On Indicator - When you turn on the gas, the indicator illuminates and gas is

available to the handset.

Gas Off Indicator - When you turn off the gas, the indicator illuminates and gas is not available to the handset.

Gas Flow Indicator - This indicator illuminates when you activate argon-enhanced coag or argon-shrouded cut or when you press the Gas Line Purge button.

Flow Rate Display - The display shows gas flow on a scale from 0.5 to 12 LPM. The

2-2 Valleylab Argon Gas Delivery Unit II Service Manual

Valleylab Argon Gas Delivery Unit II Front Panel Descriptions

default gas flow setting is 0.5 LPM.

Standard Gas Flow Indicator - This green LED illuminates when you select the standard gas flow range.

Gas Flow Range Selector - Press this switch to the top position for standard flow range (0.5 - 12 LPM) or bottom position for low gas flow (0.5 - 4 LPM).

Low Gas Flow Indicator - This green LED illuminates when you select the low gas flow range.

Flow Control Knob - To increase (+) the argon gas flow, turn the knob clockwise. To decrease (-) the argon gas flow, turn the knob counterclockwise.

Controls, Indicators, and

Gas Tank Indicators and Controls

Tank Select Button, Tank 1 - Press this button to select tank 1.

Tan k I n di cat or, Tan k 1 - The indicator illuminates when you select tank 1.

Low Pressure Alarm, Tank 1 - The indicator illuminates when the tank pressure is

below 10% of full tank pressure. The indicator flashes and a brief alarm sounds when all available tanks are low.

% Argon in Tank 1 - The bar graph indicates percent of argon gas remaining in tank 1.

Tank Select Button, Tank 2 - Press this button to select tank 2.

Tan k I n di cat or, Tan k 2 - The indicator illuminates when you select tank 2.

Low Pressure Alarm, Tank 2 - The indicator illuminates when the tank pressure is

below 10% of full tank pressure. The indicator flashes and a brief alarm sounds when all available tanks are low.

% Argon in Tank 2 - The bar graph indicates percent of argon gas remaining in tank 2.

Gas Lines and Receptacles

On/Off Switch - This switch supplies power to the unit.

Peritoneal Pressure Tubing Receptacle - Connect the peritoneal pressure tubing filter

to this luer receptacle.

Receptacles

Gas Line Receptacle - Connect the handset particle filter to this luer receptacle.

RF Input Receptacle - Connect the RF jumper cable to this receptacle when using the

Valleylab Argon Accessory.

Handset Receptacle - Connect the handset three-pin connector to this receptacle.

Valleylab Argon Gas Delivery Unit II Service Manual 2-3

Valleylab Argon Gas Delivery Unit II Front Panel Descriptions

Front panel

Overpressure Setpoint Display

Obstruction Indicator (Handset Tubing or Peritoneal Pressure Tubing)

Overpressure Indicator

Gas On/Gas Off Button

Standard Gas Flow Indicator

Tan k S el ec t Button, Tank 1

Peritoneal Pressure Display

Overpressure On/Off Switch

On/Off Switch

Peritoneal Pressure Tubing Receptacle

Overpressure Control Knob

Gas On Indicator

Gas Line Purge Button

Flow Rate Display

Gas Flow Indicator

Flow Control Knob

Gas Off Indicator

% Argon in Tank 1

Gas Flow Range Selector

Low Gas Flow

Indicator Gas Line Receptacle

Ta nk Indicator, Tan k 1

Low Pressure Alarm, Tank 2

RF Input Receptacle

Tank Indicator, Tank 2

% Argon in Tank 2

Handset Receptacle

Tank Select Button, Tank 2

Low Pressure Alarm, Tank 1

2-4 Valleylab Argon Gas Delivery Unit II Service Manual

Rear panel

Tank 1 Receptacle

Connect the tank 1 regulator hose to this receptacle.

Connect the tank 2 regulator hose to this receptacle.

The Valleylab Argon Gas Delivery Unit II may be adjusted through this serial port to stop argon gas delivery when the peritoneal cavity pressure meets or exceeds the selected setpoint. Contact your Valleylab representative for further information.

Tank 2 Receptacle

Valleylab Argon Gas Delivery Unit II Front Panel Descriptions

RS-232 Serial Port

Power Entry Module

Connect a power cord with a three-prong hospital grade connector to this receptacle. There are two entry module fuses in this receptacle.

Controls, Indicators, and

Receptacles

Tank 2 Transducer Receptacle

Connect the tank 2 transducer cable to this receptacle.

Tank 1 Transducer Receptacle

Connect the tank 1 transducer cable to this receptacle.

Connect a Valleylab electrosurgical footswitch to this receptacle. Use only a Valleylab footswitch with the Valleylab Argon Gas Delivery Unit II. Use of an incompatible footswitch may case unexpected output. Do not plug the footswitch into the electrosurgical generator.

Equipotential Grounding Lug

Use an equipotential grounding cable to connect the generator to protective earth ground.

ESU Interface Cable Receptacle

Connect a Valleylab electrosurgical generator to this receptacle using the ESU interface cable provided by Valleylab.

Footswitch Receptacle

Valleylab Argon Gas Delivery Unit II Service Manual 2-5

Chapter 3

Technical Specifications

Specifications subject to change without notice.

Technical Specifications

Valleylab Argon Gas Delivery Unit II Service Manual 3-1

Performance Characteristics

Standard Conditions of Measurement

Unless otherwise specified, all measurements are specified at an ambient temperature of 70° F (21° C) and 760 torr.

Operating Parameters

Temperature Range: 50° F – 104° F (10° C – 40° C)

Humidity Range: 15% – 85%, noncondensing

Atmospheric Pressure: 10 psia - 15.4 psia (70 KPa – 106 KPa)

Storage and Shipping

Temperature Range: -40° F – 158° F (-40° C – 70° C)

Humidity Range: 10% – 85%, noncondensing

Atmospheric Pressure: 10 psia - 15.4 psia (70 KPa – 106 KPa)

Input Power Source

Operating Range: 100V – 120 V ~

Line frequency: 50 Hz – 60 Hz

Current: 0.5 ampere

Power consumption: 100 VA – 120 VA

Low Frequency Leakage (50Hz – 60 Hz)

All patient connected terminals tied together:

Source current normal polarity, intact chassis ground< 10 μA

Source current normal polarity, ground open< 50 μA

Source current reverse polarity, ground open< 50 μA

Sink current, all inputs < 20 μA

3-2 Valleylab Argon Gas Delivery Unit II Service Manual

Performance Characteristics

Gas Flow Ranges

Low Gas Flow: 0.5 - 4 standard liters/minute ± 15% of the flow rate shown on the Flow display.

Standard Gas Flow: 0.5 - 12 standard liters/minute ± 15% of the flow rate shown on the Flow display.

Audio Volume

The alarm tones are set to a level of > 65 dBA at 1 m and are not adjustable.

Approximate Weight

24 lb. (10.9 kg)

Size

17.8 in. x 16.0 in. x 5.6 in. (45.2 cm x 40.6 cm x 14.2 cm)

Gas Tanks

Maximum Pressure: 2000 psi (13790 kPa) (138 bar)

Power Cord Specification

This unit was equipped from the factory with a 110 NEMA 5-15 power cord. Should the AC power cord need to be replaced to match another plug configuration, the replacement plug/cable/receptacle configuration must meet or exceed the following specifications:

100 - 120 VAC

Cable - SJT16/3, IEC color code, maximum length 15 ft. (5 m) Plug - minimum 10 A - 125 VAC Unit receptacle - IEC female, minimum 10 A - 125 VAC

Technical Specifications

Valleylab Argon Gas Delivery Unit II Service Manual 3-3

Standards and IEC Classifications

The Valleylab Argon Gas Delivery Unit II meets all pertinent clauses of the IEC 60601-1 second edition and IEC 60601-2-2 third edition.

ATTENTION: Consult accompanying documents.

Danger: Explosion risk if used with flammable anesthetics.

To reduce the risk of electrical shock, do not remove the cover. Refer servicing to qualified service personnel.

Classified with respect to electrical shock, fire, mechanical, and other specified hazards only in accordance with UL60601-1 and CAN/CSA C22.2 No. 601.1.

Type CF Equipment (IEC 60601-1) /Defibrillator Proof

The Valleylab Argon Gas Delivery Unit II unit provides a high degree of protection against electric shock, particularly regarding allowable leakage currents. It is type CF isolated (floating) output and may be used for procedures involving the heart.

This generator complies with the ANSI/AAMI HF18 specifications for “defibrillator proof” designation and IEC 60601-2-2.

Liquid Spillage (IEC 60601-2-2 Clause 44.3)

The Valleylab Argon Gas Delivery Unit II is constructed so that liquid spillage in normal use des not wet electrical insulation or other components which when wetted are likely to adversely affect the safety of the equipment.

3-4 Valleylab Argon Gas Delivery Unit II Service Manual

EMC Compatibility

Electromagnetic Compatibility (IEC 60601-1-2 and IEC 60601-2-2)

The Valleylab Argon Gas Delivery Unit II unit complies with the appropriate IEC 60601-12 and IEC 60601-2-2 specifications regarding electromagnetic compatibility.

Notice

The Valleylab Argon Gas Delivery Unit II should not be used adjacent to or stacked with operating room equipment, unless otherwise specified in the Valleylab Argon Gas Delivery Unit II User’s Guide and Service Manual. The Valleylab Argon Gas Delivery Unit II should be used only in the intended configuration.

The electrosurgical generator used with the Valleylab Argon Gas Delivery Unit II delivers RF energy during activation. Observe other electronic medical equipment during activation of the Valleylab Argon Gas Delivery Unit II for any possible adverse electromagnetic effects. Provide adequate separation of this equipment to minimize the risk of adverse effects.

EMC Compatibility

The use of accessories, other than specified in the Valleylab Argon Gas Delivery Unit II User’s Guide and Service Manual, may increase emissions or decrease immunity of the Valleylab Argon

Gas Delivery Unit II.

Technical Specifications

Valleylab Argon Gas Delivery Unit II Service Manual 3-5

EMC Compatibility

Guidance and manufacturer's declaration - electromagnetic emissions

The Valleylab Argon Gas Delivery Unit II is intended for use in the electromagnetic environment specified below. The customer or the user of the Valleylab Argon Gas Delivery Unit II should ensure that it is used in such an environment.

Emissions test Compliance Electromagnetic environment -

guidance

RF emissions

CISPR 11

RF emissions

CISPR 11

Harmonic emissions

IEC 61000-3-2

Voltage fluctuations/

flicker emissions

IEC61000-3-3

Group 1 The Valleylab Argon Gas Delivery Unit II

uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment.

Class A The Valleylab Argon Gas Delivery Unit II

is suitable for use in all establishments other than domestic and those directly

Class A

Complies

connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.

3-6 Valleylab Argon Gas Delivery Unit II Service Manual

Guidance and manufacturer's declaration - electromagnetic immunity

EMC Compatibility

Immunity test IEC 60601 test

level

Electrostatic

discharge (ESD)

IEC 61000-4-2

Electrical fast

transient/burst IEC

61000-4-4

Surge

IEC 61000-4-5

Voltage dips, short

interruptions and

voltage variations on

power supply input

lines

IEC 61000-4-11

+/-6 kV contact

+/-8 kV air

+/-2 kV for power

supply lines

+/-1 kV for input/

output lines

+/-1 kV

differential mode

+/-2 kV common

mode

< 5% U t

(>95% dip in Ut)

for 0,5 cycle

4 0% Ut

(>60% dip in Ut)

for 5 cycles

7 0% Ut

(>30% dip in Ut)

for 25 cycles

< 5% U t

(>95% dip in Ut)

for 5 sec

Compliance

level

+/-6 kV contact

+/-8 kV air

+/-2 kV for power

supply lines

+/-1 kV for input/

output lines

+/-1 kV

differential mode

+/-2 kV common

mode

< 5% U t

( > 9 5 % d i p i n U t )

for 0,5 cycle

4 0% U t

( > 6 0 % d i p i n U t )

for 5 cycles

7 0% U t

( > 3 0 % d i p i n U t )

for 25 cycles

< 5% U t

( > 9 5 % d i p i n U t )

for 5 sec

Electromagnetic

environment - guidance

Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%.

Mains power quality should be that of a typical commercial or hospital environment.

Mains power quality should be that of a typical commercial or hospital environment. If the user of the Valleylab Argon Gas Delivery Unit II requires continued operation during power mains interruptions, it is recommended that the Valleylab Argon Gas Delivery Unit II be powered from an uninterruptible power supply or a battery.

Technical Specifications

Power frequency (50/ 60 Hz) magnetic field

IEC 61000-4-8

NOTE: Ut is the a.c. mains voltage prior to the application of the test level.

3 A/m 3 A/m Power frequency magnetic

fields should be at levels characteristic of a typical location in a typical commercial or hospital environment.

Valleylab Argon Gas Delivery Unit II Service Manual 3-7

EMC Compatibility

Guidance and manufacturer's declaration - electromagnetic immunity

Immunity

test

Conducted

RF IEC

61000-4-6

Radiated RF

IEC 61000-

4-3

IEC 60601 test level

3 Vrms

150KHz to

80MHz

3 V/m

80MHz to

2.5GHz

Compliance

level

3 V

7 V/m

Electromagnetic environment - guidance

Portable and mobile RF communications equipment should be used no closer to any part of the Valleylab Argon Gas Delivery Unit II, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.

Recommended separation distance

√P

d=1.2

d=0.5

√P 80MHz to 800MHz

d=√P 800MHz to 2.5GHz

Where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer and d is the recommended separation distance in meters (m).

Field strengths from fixed RF transmitters, as determined by an

electromagnetic site survey, should be less than the

compliance level in each frequency range

Interference may occur in the vicinity of equipment marked with the following symbol:

NOTE 1 At a 80MHz and 800MHz, the higher frequency range applies.

NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected

by absorption and reflection from structures, objects and people.

a. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the Valleylab Argon Gas Delivery Unit II is used exceeds the applicable RF compliance level above, the Valleylab Argon Gas Delivery Unit II should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the Valleylab Argon Gas Delivery Unit II.

b. Over the frequency range 150kHz to 80MHz, field strengths should be less than 3V/m.

3-8 Valleylab Argon Gas Delivery Unit II Service Manual

Recommended separation distances between portable and mobile RF communication

equipment and the Valleylab Argon Gas Delivery Unit II

The Valleylab Argon Gas Delivery Unit II is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The Customer or the user of the Valleylab Argon Gas Delivery Unit II can help prevent electromagnetic interferences by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the Valleylab Argon Gas Delivery Unit II as recommended below, according to the maximum output power of the communications equipment.

Separation distance according to frequency of transmitter (m)

Rated maximum output power of

transmitter (W)

0.01 .12 m 0.05 m 0.1 m

150 kHz to 80MHz

√P

d=1.2

80MHz to 800MHz

d=0.5√P

800MHz to 2.5GHz

d=√P

EMC Compatibility

0.1 .38 m 0.16 m 0.32 m

1 1.2 m 0.5 m 1 m

10 3.8 m 1.6 m 3.2 m

100 12 m 5 m 10 m

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.

NOTE 1 At a 80MHz and 800MHz, the separation distance for the higher frequency range applies.

NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.

Technical Specifications

Valleylab Argon Gas Delivery Unit II Service Manual 3-9

+ 78 hidden pages

Valleylab Argon Gas Delivery Unit II User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Conventions Used in this Guide

Limited Warranty

Table of Contents

Introduction

General Description

List of Components

Service Personnel Safety

General Service Precautions

Fire/Explosion

Electric Shock

High Pressure

Argon Gas

Cleaning

Valleylab Argon Gas Delivery Unit II Front Panel Descriptions

Overpressure System

System Purge Control

Gas Flow Controls

Gas Tank Indicators and Controls

Gas Lines and Receptacles

Performance Characteristics

Standard Conditions of Measurement

Operating Parameters

Storage and Shipping

Input Power Source

Low Frequency Leakage (50Hz – 60 Hz)

Gas Flow Ranges

Audio Volume

Approximate Weight

Size

Gas Tanks

Power Cord Specification

Standards and IEC Classifications

Type CF Equipment (IEC 60601-1) /Defibrillator Proof

Liquid Spillage (IEC 60601-2-2 Clause 44.3)

EMC Compatibility

Electromagnetic Compatibility (IEC 60601-1-2 and IEC 60601-2-2)