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Valleylab SurgiStat II - Service Manual

Valleylab SurgiStat II
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Service Manual
SurgiStat II
Electrosurgical Generator

Table of Contents

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Summary

Preface and Safety Information

Safety Precautions

Highlights safety precautions for operating the electrosurgical generator and general warnings.

Applicable Safety Standards

Lists the safety standards and certifications that the electrosurgical generator complies with.

The SurgiStat II Electrosurgical Generator

Functional Description

Describes the generator's purpose, digital technology, monopolar/bipolar operations, and key features.

Unit Description

Details the self-contained unit, front panel, rear panel, and internal components of the generator.

Safety Precautions When Testing

Provides crucial safety instructions for testing the generator and handling potential hazards.

General Warnings and Cautions

Outlines general safety warnings, cautions, and notices for operating the generator and accessories.

Fire and Explosion Hazards

Covers specific warnings and precautions regarding fire and explosion risks associated with the generator.

Electric Shock Hazards

Details critical safety warnings and procedures to prevent electric shock when operating or servicing the generator.

Servicing and Cleaning

Provides guidance on servicing the generator and outlines proper cleaning procedures.

Controls, Indicators, and Receptacles

Front Panel Layout

Illustrates and describes the layout of controls, indicators, and receptacles on the front panel.

Controls and Indicators Overview

Details the function of each control and indicator on the front panel, including power switch, displays, and LEDs.

Cut and Blend Controls

Explains the controls and displays for selecting and adjusting Cut and Blend modes and power.

Coag and Bipolar Controls

Describes the controls and displays for selecting and adjusting Coag and Bipolar modes and power.

Indicator Lights Explained

Details the function of various indicator lights for power, patient return electrode status, and footswitch control.

Power Switch and Receptacles

Identifies the location and function of the power switch and front panel receptacles.

Rear Panel Layout

Details the connectors and controls found on the rear panel of the generator.

Front Panel Symbols

Explains the meaning of symbols used for controls and indicators on the front panel.

Rear Panel Symbols

Explains the meaning of symbols used for connectors and controls on the rear panel.

Technical Specifications

Performance Characteristics

Details input power requirements, duty cycle, dimensions, weight, and operating parameters.

Operating Parameters and Storage

Specifies operating conditions, transport, storage parameters, and audio volume levels.

Patient Return Electrode Sensing

Describes the system's patient return electrode sensing function for single-plate and split-plate electrodes.

Leakage Current Specifications

Lists leakage current values for low and high frequencies and details IEC classifications.

Standards and IEC Classifications

Details the generator's compliance with IEC 60601-1 and IEC 60601-2-2 standards.

Electromagnetic Compatibility

Covers specifications for liquid spillage, EMI, voltage transients, and electromagnetic compatibility.

Electromagnetic Emissions Declaration

Provides manufacturer's declaration regarding electromagnetic emissions compliance and guidance.

Electromagnetic Immunity Declaration

Details manufacturer's declaration for electromagnetic immunity compliance and guidance.

RF Equipment Separation Distances

Provides recommended separation distances for RF communication equipment to ensure proper operation.

Output Power Characteristics

Details maximum output power for bipolar and monopolar modes, including frequency and crest factor.

Output Power Curves

Presents graphical data on output power versus impedance and peak voltage versus power setting.

Reference Output Waveforms

Displays output waveforms for different modes as viewed on an oscilloscope.

Theory of Operation

System Block Diagram

Presents a functional block diagram illustrating the main components and signal flow of the SurgiStat II system.

Key Circuit Functional Overview

Provides a functional overview of the main circuits, including power supplies and RF amplifier.

DC Supply Check Circuit

Explains the DC supply check circuit's role in monitoring high voltage DC supply and error reporting.

Temperature Sensing Circuit

Describes the temperature sensing circuit's function in monitoring internal unit temperature.

Activation Sensing Circuits

Details the four request activation sensing circuits for hand and foot controls.

Patient Return Electrode Sensing

Describes how the unit senses patient return electrode attachment and monitors contact quality.

RF Amplifier Circuit

Explains the function of the RF amplifier circuit in generating output energy.

Monopolar and Bipolar Circuitry

Details the monopolar select circuit and monopolar/bipolar select relays.

Front Panel Controls and Indicators

Lists and describes the functions of front panel controls and indicators.

Digital PWM Circuit

Explains the digital PWM circuit's role in controlling output power and RF drive.

System Logic Explained

Describes the system logic, its components, and its function as the generator's 'brain'.

Control Signal Inputs and Outputs

Lists and describes important input and output signals for troubleshooting.

Generator Operation

Generator and Accessory Inspection

Provides guidelines for inspecting the generator and accessories before each use.

Service Personnel Safety Precautions

Details essential safety warnings and precautions for service personnel when testing or operating the generator.

Installation and Placement Guidelines

Specifies how to install and position the generator for optimal performance and cooling.

Functional (Operational) Checks

Outlines the checks to perform upon initial installation to ensure proper operation.

Setting Up and Starting the Unit

Provides step-by-step instructions for setting up and powering on the SurgiStat II generator.

Patient Return Electrode Alarm Check

Details how to test the patient return electrode alarm function.

Bipolar Mode Check (Footswitch)

Guides on checking the proper operation of the Bipolar mode using a footswitch.

Monopolar Mode Check (Footswitch)

Guides on checking the proper operation of the Monopolar mode using a footswitch.

Monopolar Mode Check (Handswitch)

Details how to check the Monopolar mode operation using a handswitch.

Activating the Generator

Explains how to activate the generator for monopolar and bipolar operations using handswitch or footswitch.

Maintenance Procedures

Cleaning the Generator Unit

Provides instructions for safely cleaning the generator unit and power cord.

Periodic Inspection Schedule

Outlines the recommended schedule and items to inspect for periodic maintenance.

Replacing Fuses

Details the procedure and fuse specifications for replacing fuses in the generator.

Troubleshooting Guide

Recommended Troubleshooting Equipment

Lists the necessary equipment for effectively troubleshooting the SurgiStat II generator.

General Troubleshooting and Inspection

Provides general steps for identifying and correcting malfunctions and inspecting the generator.

Receptacle Inspection

Details how to inspect all receptacles on the generator for obstructions or damage.

Error Codes and Audio Tones

Explains error codes, their descriptions, and recommended actions for resolution.

Correcting Common Problems

Provides a table to help identify and correct common situations and their possible causes.

Monitor Interference Issues

Addresses common problems related to monitor interference and interference with other devices.

Pacemaker Interference

Provides guidance on managing pacemaker interference during electrosurgery.

Neuromuscular Stimulation Issues

Addresses abnormal neuromuscular stimulation and its causes during electrosurgery.

Repair Policy and Procedures

Manufacturers Responsibility

Defines Valleylab's responsibility for product safety, reliability, performance, and service.

Returning Generator for Service

Outlines the procedure for returning the generator for service, including obtaining authorization.

Cleaning and Shipping the Generator

Provides instructions for cleaning and shipping the generator for service.

Product Warranty Information

Board Drawings and Schematics

Valleylab SurgiStat II Specifications

General IconGeneral
Battery TypeNot applicable
Battery LifeNot applicable
Charging TimeNot applicable
ModesCut
Power Supply50/60 Hz
Safety FeaturesAudible alarms

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