Valleylab Force GSU Service manual [gb]

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We

Valley

lab

Force

Service

Manual

GSU

Unit

Force

GSU

Unit

Service

Manual

Valleylab Inc

Pfizer

Hospital

5920 Longbow Drive

Boulder, Colorado

Forinformationcall:

Copyright © Valleylab

All

rights

permission of Valleylab Inc.

ProductsGroup

reserved.

80301

1-800-255-8522/1-303-530-2300/

Inc,

Contents

USA

1991

ofthis

publication

TWX

910-940-2514

may

notbereproducedinany

form

without

the

written

FOREWORD

The

following

manual.

This

Service

covering

warnings

Manual

the

concerning

suppliedwiththe Unit

service

instructions

Manual

covers

Technical

electrosurgery

are

for

the

installation

Specifications.

Circuit

are

use

onlybypersonnel

and

basic

service

Descriptions

beyond

the

scopeofthis

qualifiedtorepair

instructions

and

the

Testingofthe

manual.

and

service

for

the

Force

GSU

Unit

Instructions

The

readerisdirectedtothe

the

equipment

Unit

Also

for

describedinthis

included

use

and

cautions

Force

GSU

are

sections

and

Instruction

Caution:

Effective

Valleylab PartNo.:

Equipment

THEVALLEYLAB FORCEGSU SYSTEM

LIMITED

Valleylab

service
optton.ofany

after
defective.
factoryina

accident

Federal

(USA)

law

Date:

September

945100141

coveredinthis

Force

GSU

Unit:

Electronics Module/Cart

Instruction
Service
Interface

E0502-12ActiveAdapter

Electro-surgical

(2

Argon

Manual

Cable

fender

GasTanks

WARRANTY

Inc

warrants

for

the

penod(s)

Manual

Generator

washers.2

(shipped

each

set

product,orpart

deliveryofthe

This

producttothe

warranty

does

waysoas,inValleylab's

restricts

1991

A

manual:

Mounting

nylon

screws)

separately)

product

forth

below.

thereof,

original

not

applytoany

this

devicetosalebyoronthe

Valleylab

110-120

220

-240

50/60

Hz

Hardware

manufacturedbyittobe

Valleylab's

which

has

purchaser,

judgmenttoaffect

Force

GSU

Unit

Vac

Nominal

Vac

Nominal

INCLUDES

and

obligation

been

returnedtoitorits

and

which

productorpart

its

stabilityorreliability,orwhich

orderofa

Force

Force GSU™ Handset

REM™

free

from

defectsinmaterial

under

this

warrantyislimitedtothe

Distributor

examination

thereof,

which

physician.

2or

Force4Series

PatientReturn Electrode

Electro-surgical

and

workmanship

repairorreplacementatits

within

the

applicable

discloses,toValleylab's

has

been

repairedoraltered

has

been

satisfaction,

subjectedtomisuse,

under

time

period

outside

Generator

normal

shown

that

the

Valleylab's

neglect

use

and

sole

below

product

or

is

The

warranty

FORCE

ELECTROSURGICAL

MOUNTING
FOOTSWITCHES

PATIENT

STERILE DISPOSABLES

THIS

WARRANTYISIN

THE

WARRANTIESOFMERCHANTABIUTY

OBLIGATIONSORLIABILITIESONTHE

OTHER

VALLEYLAB'S
COMMUNICATION,

SHALLBELIMITEDTOTHE
THERE

HEREUNDERORELSEWHEREINCONNECTION

CONSEQUENTIAL

This

warranty

USA.

Boulder,

Valleylab

without

periods

for

Valleylab's

GSU™

UNIT

GENERATORS

FIXTURES

RETURN

(ALL

(ALL

MODELS)

ELECTRODES

LIEUOFALL

PERSONTOASSUME

PRODUCTS.

VALLEYLAB'S

ARENOWARRANTIES

DAMAGES.

and

the

The

sole

forum

StateofColorado.

Inc.

its

dealers

incurring

any

obligationtomake

NOTWITHSTANDING

AGGREGATE

rights

and

for

resolving

and

representatives,

products

MODELS)

OTHER

FORITANY

LIABILITY

WHICH

obligations

disputes

the

areas

follows:

OneYear

OneYear

OneYear

OneYear

Shelf

Sterility

WARRANTIES,

AND

FITNESS

PARTOFVALLEYLAB.

OTHER

ANY

WITH

PURCHASE

EXTEND

BEYOND

WITH

hereunder

arising

underorrelatinginany

reserve

sameorsimilar

from

dateofshipment

from

dateofshipment

from

dateof shipment

from

dateof shipment

life

only,asstatedonpackaging.

only,asstatedonpackaging.

EXPRESSEDORIMPUED,

FORAPARTICULAR

VALLEYLAB

LIABILITYINCONNECTION

OTHER

PROVISION

RESPECTTOTHIS

PRICE

FOR

THE

THE

TERMS

THE

SALEOFTHIS

shallbeconstrued

the

righttomake

changesinequipment

changesonequipment

NEITHER

WITH

HEREINORIN

AGREEMENT

GOODS

HEREOF.

PRODUCT,

under

and

waytothis

previously

INCLUDING,

PURPOSE,

ASSUMES

THE

SALEORUSEOFANY

ANY

AND

PRODUCTS

ANDOFALL

WITHOUT

NOR

AUTHORIZES

OTHER

DOCUMENT

SOLD

LIMITATION

OTHER

ANY

OF

OR

HEREUNDER

SOLDBYVALLEYLABTOCUSTOMER

VALLEYLAB

governedbythe

warrantyisthe

FOR

INDIRECT

built

built

and/or

DISCLAIMS

OR

lawsofthe

District

Court

and/or

soldbythematany

soldbythem.

ANY

LIABILITY

StateofColorado

for

the

Countv

of

time

Service

Centers

Valleylab Inc

Boulder, Colorado,

800-255-8522

USA

Valleylab Australia

Prospect, AUSTRALIA

61-2-688-4888

Valleylab Benelux

Nieuwegein, HOLLAND

31-3402-32456

Valleylab France

c/o

CLIMO

Lyon, FRANCE

33-78-096241

Valleylab Germany

Wichmannstrasse

Postfach

D-2000

GERMANY

040-89

520452

Hamburg 52

68

84

4

Valleylab UK

London,

44-81-993-7808

UNITED KINGDOM

Valleylab Europe, Middle East and Africa

London,

44-81-993-7808

UNITED

KINGDOM

t

ATTENTION:

REFERTOTHE

ACCOMPANYING

DOCUMENTS

DRIP-PROOF

TYPECFEQUIPMENT

LOW

LEAKAGE

SUITABLE

FOR

CARDIAC

USE

Table

of

Contents

FORCE

SECTION

VALLEYLAB

Handset

Alarms

GSU

WARNINGS

1

GENERAL

CLINICAL

FORCE

SYSTEM

AND

SERVICE

CAUTIONS

DESCRIPTION

USE

GSU

SYSTEM

OF

FEATURES

Dosage Error 4

Unit

Self

Test

Argon

Gas

Tanks

Storage 5

Adjustments 5

Other Accessories and Adapters 5

SECTION

UNPACKAGING

UNPACKING

2

THE

FORCE

AND

INSTALLATION

GSU

UNIT

...

Unpacking Instructions 7

Valleylab Force GSU UnitFeatures 7

INSTALLING

Responsibility of
Attach

Force

Interface

THE

FORCE

the

the

Electrosurgical Generatorto

GSU

Cart

the

Force

GSU

Manufacturer 8

GSU

Unittothe

SYSTEM

the

Electrosurgical Generator 9

Install

the

Argon

Gas

Tanks

Check

the

Power

Connector

Ensure Proper Grounding 11

Perform a Preoperational Checkout 11

1

3

4

4

4

4

4

7

7

8

8

9

11

SECTION

DESCRIPTION

INDICATORS

CONTROLS

INDICATORS

ALARMS

RECEPTACLES

3

OF

CONTROLS,

AND

RECEPTACLES

12

12

12

13

13

SECTION

TECHNICAL

OPERATING

STORAGE
INPUTPOWER
LOW
GAS

AUDIO

APPROXIMATE
APPROXIMATE

AND

FREQUENCY

FLOW

VOLUME

4

SPECIFICATIONS

PARAMETERS

SHIPPING

SOURCE

LEAKAGE

RANGE

WEIGHT

DIMENSIONS

14

14
14
14
14
14

14

15
15

SECTION

THEORY

FUNCTIONAL

CIRCUIT

SECTION

CHECKOUT

GENERAL

RECOMMENDED

MECHANICAL

Control

Rear

5

OF

DESCRIPTIVE

DESCRIPTIONS

6

TEST

INFORMATION

TEST

INSPECTION

Panel

Panel

Connectors

OPERATION

OVERVIEW

PROCEDURES

EQUIPMENT

Adjustable Platform 22

Power

POWER-ON

FUNCTIONAL

Checking Leakage Current and Ground Resistance

Cord

SELFTEST

TEST

WITH

GAS

..

Equipment Required 26

SECTION

MAINTENANCE

ROUTINE
CLEANING
STORING

ARGON

INTERNAL
CALIBRATING

PRECALIBRATION

CALIBRATION

7

MAINTENANCE

INSTRUCTIONS

THE

FORCE

GAS

TANK

FILTER

THE

PROCEDURE

PROCEDURES

AND

GSU

SYSTEM

REPLACEMENT

REPLACEMENT

FORCE

CHECK

GSU

PROCEDURE

INSPECTIONS

UNIT

16

16

17

21

21
22

22
22

22

23
23

23

26

27

27

27
27

28

30

31

31

36

SECTION

8

OVERALL

TROUBLESHOOTING

SECTION

9

TROUBLESHOOTING

ELECTRONICS

SECTION

10

TROUBLESHOOTING

PRESSURE

SYSTEM

CHASSIS

REGULATOR

in

THE

THE

MODULE

HIGH

MODULE

39

41

57

SECTION

REPLACEMENT

RECOMMENDED

ELECTRONICS

11

REPLACEMENT

CHASSIS

PROCEDURES

EQUIPMENT

MODULE

REPLACEMENT

..

Equipment Required 62

Removing

Installing

HIGH

REPLACEMENT

the

the

PRESSURE

Electronics

Electronics

REGULATOR

Chassis

Chassis

Module 62

Module 63

MODULE

Equipment Required 64

Removing the High Pressure Regulator Module 64
Installing the High Pressure Regulator Module 65

PURGING

CONTROL

THE

GAS

DISPLAY

LINES
BOARD

REPLACEMENT

Equipment Required 66

Removing

the

Control Display Board 66

Installing the Control Display Board 67

POWER

SUPPLY

REPLACEMENT

Equipment Required 68

Removing the Power Supply 68

Installing

FUSE

the Power Supply 69

REPLACEMENT

Equipment Required 70

COMPONENT

REPLACEMENT

GUIDELINES

61

61

62

64

66
66

68

70

72

SECTION

FACTORY

RETURNING

Returning

Returning CircuitBoards and Other

12

the

THE

Force

SERVICE

EQUIPMENT

GSU

FOR

SERVICE

Unit 73

Subassemblies

..

OrderingReplacement Parts 73

SECTION

SERVICE

FORCE

ELECTRONICS

REAR

CONTROL

SECTION

ASSEMBLIES

GSU

PANEL

DISPLAY

13

PARTS

UNIT

CHASSIS

ASSEMBLY

14

LIST

MODULE

BOARD

AND

SCHEMATICS

73

73

73

74

74

75

76
77

79

iv

List

of

Figures

Figure 1.1

Figure 2.1 ESU Interface Cable

Figure

Figure

Figure 5.1 FunctionalBlock Diagram 19

2.2

3.1

Figure

Figure

Figure

Figure

Figure

Rgure 7.3 Low Pressure Regulator 35

System

Connection

Argon

Force

5.2

6.1 Connecting the ForceGSU Handset

6.2

7.1

7.2

Force

to the Force GSU

Leakage

Argon

Internal

Features 6

and

Active Adapter

Gas

Tank

Installation

GSU

Control

GSU

Interconnect

Current

Gas

Tank

Filter

Panel

Diagram

System

Test

Circuit

Replacement

and Proper

Flow

Orientation . 30

10

12

20

24

26

28

9

Figure

Figure

Figure

Rgure

Figure

Figure

Rgure

Figure

Figure

Figure

7.4

8.1

9.1

9.2

9.3

9.4

9.5

9.6 NoGas

9.7

Figure

9.9

9.10

Control

Force

Display

Display

Display

System

No

No

Flow

Cannot

Valve

GSU

Shows

Shows

Shows

Resets

Display

Flow

Gas

Purge

Rate

Achieve0SPLM

Orifice

Unit

Overall

All

All

All

from

Errors

Screw

1's

2's

3's

Handset 47

Location

Troubleshooting

Error

Code 42

Error

Code

Error

Code 44

..

37

40

43

Flow

45

46

48

50

51

Rgure 9.11 CannotAchieve 16 SPLM

v

Flow

52

Figure 9.12 Unstable Gas Flow 53

Figure

9.13

Obstruction

Problem

54 ^

Rgure 9.14 IncorrectTank Pressures Displayed 55

Figure 9.15 No/Weak ESU Output

Figure 10.1

Rgure

Rgure

10.2

10.3

System

Gas

Gas

Gas

Leak-Electronics

Leak-High

Leak

Pressure Equipment — 60

Chassis

Module

..

56

58

59

Figure 11.1 Power Supply Replacement 69

Figure

14.1

Force GSU Unit 79

Figure 14.2 Electronics Chassis Module 81

Figure 14.4 Rear Panel

Figure 14.5 High Pressure

Assembly

Assembly

83

84

Rgure 14.6 Control Display Board 85

Figure 14.7 Control Display Board Circuit

Schematics

. 86

VI

FORCE

GSU

WARNINGS

SYSTEM

SERVICE

WARNINGS

AND

CAUTIONS

DANGER:

anesthetics,

Use

only

compromised.

High Pressure Hazard: Ensurethat Argon gas
have

In filling

overpressurlze

The

gas

Explosion Hazard: DoNOT

gases,

high

been

pressure

the

tanks,

line fitting In

liquids,orobjects.

purity

grade

tested,

ensure

the

tanks.

this

use

the

(99.998%

pure

Force GSU

or better)

tanks

SystemInthe

Argon

gas.

and fittings

Patient

used

presence of flammable

safety

with

may

the

Force GSU

be

certified, and filled accordingtoapplicable standards and local

your

Unit is

supplier

compatible

meets

all local and national

with

many

common

gas

codes.

tanks

Do NOT

(e.g. freon

[tetrafluromethane], helium, krypton, neon, nitrogen, and xenon). ONLY CONNECT ARGON

TO

THE

FORCE

Take appropriate precautions (suchasuse

rule,"

etc.)

Electric

outlet.

Electric

comeincontact

ModuleorTP-1asa

Shock

Shock

GSU

SYSTEM.

when

taking

Hazard: Do NOT Install a

Hazard:

with

measurements

The

lower

it. Do NOT

measurement

of isolated

or

troubleshooting

wet

power

heatsinkonthe

use

It for

ground.

ground

reference.

tools

cord

power

Use

and equipment;

the

Unit.

assembly

supply

the

Is at an

chassisofthe

into

useofthe

the

Unitorinto a wall

elevated

Electronics

voltage. Do NOT

"one

Chassis

System

codes.

GAS

hand

Electrical

Fuse

and

Shock

Replacement:

ratingasthe

Hazard:

For

original

continued

Explosion Hazard: Do NOT

(99.998%

Electric

disassembled

Keep

safely.

pureorbetter)

Shock

the

Handset

Argon

Hazard: Do NOT

and

energized.

electrode

Disconnect

fuse.

use

oxygen

gas

touch

away

from

the

power

protection

for

any

for all

adjustments.

any

exposed

personnel.

cord

before

against

fire hazard,

adjustments.

wiring or

Use

replacing

the

Accessory

parts.

replace

Always

conductive

use

only

with

the

high

purity grade

surface

Holstertohold

while

same

the

the

type

Unit is

Handset

CAUTIONS

Improperly
Properly

Ensure that the Active Adapter is

secured gas tanks and/orimproper connectionof highpressure gas lines may resultin

connect the ESU interfacecable

fully

for

correct operation ofthe

Force

GSU System.

inserted intothe ACCESSORY receptacle of the electrosurgical

injury.

generatorandthat no metalisexposed. When usingthe ActiveAdapterwiththe Handset, ensure the RF

link

has

no metal

Do not

and

This Unit contains electrostatic sensitivecomponents.

use

cause

workstation.

circuit

boards bytheir nonconductiveedges. Use an antistatic containerfortransportof electrostatic

sensitive components and circuitboards.

exposed.

a knife or similar metal object to remove the

the

connection

Wear

a grounding strap

to

leak.

when

handling electrostatic sensitive components. Handle

filter

assembly hose. This will

When

repairing

the

Unit,

damage

work

at a static control

the

barbs

the

SECTION

1

GENERAL

The Valleylab
the active electrode of a special electrosurgical handset which is powered by a Valleylab

Series

as standardelectrosurgery. No footswitch is required to operate the

When the user activates the Handset inthe gas-enhanced modes, a

between the electrode and the tissue. The presence of inertgas at the surgical site reduces combustion

with

surgical site, thereby improving visibility.

The Gas-Enhanced Coagulation mode permits the userto coagulatetissue in a more

than with standard figuration and reduces coagulated blood on the tissue surface.

The Gas Shrouded Cut mode enhances the

Electrosurgical

othergases

charring

Pure Cut, Blend 1,

NOTE:

the

Four

•

and

Using

electrode.

major

Valleylab

DESCRIPTION

Force

GSU System provides a controlled

Generator. The handset

(e.g.,

oxygen,

smoke.

theGas

components comprisethe

Force

This

Blend2,and

Shrouded

GSU

nitrogen,

mode

primarily

Blend3modes.

Cut

Electronics

OF

CLINICAL

provides

etc.)and pushes

ability

enhances

modeat

Valleylab

higher

Module/Cart

USE

flow

gas-enhanced cutting andcoagulation as well

residual

to achieve

cuttingatlower

powerlevelsmay

Force

GSUSystem:

Unit

(hereafter

of Argon(an

inert,

non-reactive gas) over

Force

GSU System.

flow

of Argon gas is delivered

smoke orwatervaporaway

rapid

cutting and hemostasis while

power

levels

increase

referred

to as

"Unit")

Force

2 or4

from

controlled

manner

reducing

andisavailableinthe

arcing

and

sparking

the

from

• Valleylab ForceGSU Sterile, Disposable Handset

• Valleylab

• Valleylab REM Patient Return Electrode

Force

2 or

Force4Electrosurgical

Generator

VALLEYLAB

The Valleylab Force GSU System includes the following features:

Handset

FORCE

GSU

SYSTEM

FEATURES

• Handswitching Technologyfor Electrosurgery

The Force GSU Sterile, Disposable Handset allows the

electrosurgical or
positive tactile

•

2-Position

Place the

nozzle

Alarms

•

Designed for

Quality Monitor.

• Gas

This alarm alerts the

modes

may

for

REM

Line

are

use

gas

better

Safety

the

• Two-Stage

gas-enhanced

response

when

modes.

pressed.

The

Nozzle

flow nozzle in a forward position for more effective

visibilityorfor

use

with a Valleylab Force 2 or 4 Series Electrosurgical Generatorwith

Obstruction

user

rendered nonfunctional untilthe obstruction is removed. Duringthis alarm condition, the

System

inthe Standard Electrosurgery mode.

Low

Tank Pressure

cleaning

the

Alarm

of an obstruction suchasa compressed or kinked

Alarm

This alarm alerts the userwhen either gas tank pressure drops below10% and 5% ofthe volume of

remaining. m

and

gas

control buttons

blade.

Gas

user

Control

to activate the Force GSU

are

color

coded,

gas

coagulation, or retract

gas

System

recessed,

the

line. The

in normal

and

have

the

gas

flow

REM Contact

gas-enhanced

user

gas

a

Dosage

If

the

two seconds.

clear

Unit

The

displays flash 222. When the

Argon

• Automatic

Whenone

alternate
manually.

•

Two Argon

along withanadjustable retaining strap. The storage baydoors

•

Store

Error

gas

flow

rate deliveredexceeds a specified

All

displays flash 111, and the

the

dosage

Self

Test

Unit

performsa hardware and softwareselftest. Whenthe

Gas

gas

Gas

Tank

Gas

Tank

the

safety

error.

Unit

detects a software problem,alldisplays flash 333.

Tanks

Tank

Switching

gas

tank becomes empty(less than

tank, ifavailable, with no

Storage

gas

Safety

Bays

tanks

are

Cap

capsinthe

enclosed withinthe Force GSU cart. Eachstorage bay contains a tank cradle

Holders

rear

baseofthe

gas

limit,

Unit

immediatelyshuts down. Power the Unitoffand on to

5%),

flow interruption to

cart until needed.

the

Unit

the ForceGSUSystem automatically selects the

detects a dosage error inapproximately

Unit

detects a hardware problem, all

the

Handset.

are

self latching.

This

canbeswitched

Storage

•

Storage

The

tilt-out

other

Compartment
storage

accessories

compartment holds

and

adapters.

the

Instruction Manual, Handsets, patient return electrodes,

and

• Footswitch

These

hooks

Storage

are

located

Hooks

on

the

rearofthe

carttostore

the

• Cord Wrap Brackets

Store

the

electrosurgical generator power cord, the Force GSU Unitpower cord,

on

the

cord

wrap

brackets.

Adjustments

• Adjustable
the

Using

15°.

• Locking

Lock

the

Other

Accessories

-

ESU

Generator

tiltadjustment, you

Casters

cart

casters

for safety

and

Interface

Cable

Platform

can

when

Adapters

adjust

the

mounting platform for

installing, removing

- Active Adapter

- Electrosurgical Generator Mounting Hardware (2 fender

footswitch

the

gas

washers,

when

the

electrosurgical

tanks,

and

2 nylon screws)

notinuse.

and

normal

use.

the footswitch cord

generator

for 0° to

-

Instruction

-

Instruction

- Multi-Language

Manual

Card

Labels

Available separately:

- Argon

Gas

Tanks

- Force 2 or Force 4

-

Force

GSU

Handset

-

REM

Patient

Return

Series

Electrode

Electrosurgical Generator

FORCE2OR

ELECTROSURGICAL

FORCE4SERIES

(availableseparately)

GENERATOR

CONTROL
POWER

STORAGE
COMPARTMENT

PANEL/

SWITCH

ESU

LOCKING

INTERFACE

CABLE

REMOVABLE

ELECTRONICS

GAS

GAS

CASTERS

TANK

SAFETY

MODULE

STORAGE

CAP

HOLDERS

BAY

ESU

(2)

POWER

CORD

CORD

TILT

CORD

Figure 1.1

WRAP

BRACKET

ADJUSTMENT

FOOTSWITCH

STORAGE

WRAP

BRACKET

HOOKS

System

Features

D D

BACK

VIEW

SECTION

2

UNPACKAGING

UNPACKING

Unpacking

Notify

Valleylab to arrange for repair or replacement of any parts

must have the approval from

number must be displayed on the package label.

information.

THE

Instructions

Carefullyremove the Force GSU
and packing materials to

If

you have any questions concerningthe contents, contact

1-800-255-8522

AND

FORCE

use

INSTALLATION

GSU

UNIT

the

Valleylab CustomerService Department. The return authorization

Unit

and allaccessories fromthe shipping packages. Save allcartons

when transporting the

or your Valleylab representative.

See

Unit

Valleylab Force GSU Unit Features

The

Valleylab Force GSU Unit includes

•

Cart

•

Electronics

Chassis

Module

the

followingcomponents:

damaged

from shipping.

All

Section 12, "Factory Service," for further

or when returning itfor service.

Valleylab

Customer Service at

returns

The

Electronics

following

-

components:

Touch

Membrane

The control panel is arranged inthree distinctsections for

-

sections

*

*

*

Power

are

Gas

flow

Handset/gas

Gas

tank

Switch

The power switch contains a circuit breaker to protectthe

- PowerSupply

- Control Display Board

- Back

*
*

*

Panel

Mass
Control
Relief

* Filter Assembly

*

Electrical

• High

Pressure

Chassis

the

Moduleisremovabletofacilitate

Control

following:

controls

line receptacles

controls

Assembly

Flow

Meter

Valve

Valve

and

Pneumatic

Regulator Module

Panel

Connections

and

system purge

service.

ease

Unit.

This

module

contains

the

of set up and use. These

The HighPressure Regulator Moduleis removable to facilitateservice. This module contains the

following

-

- Lowpressure regulator and tank control assemblieswith

The Force GSU

Hz with no

components:

Sensors

that

Unit

is a universal inputdevice. It iscapable of accepting from85 to 264 Vac at 47 to 63

mainsorpower

sense

tank

supply switching

pressures

individually

necessary.

gas

supply

hoses

INSTALLING

THE

FORCE

GSU

SYSTEM

Thisproceduredescribes

howtoinstall

the Force

GSU

System.

Installation

includes the

1. Attach the electrosurgical generator to the Force GSU Cart.

2.

Connect

3. Install

4.

Check

5.

Ensure

the

the

the

proper

Argon

power

ESU interface

gas

tanks.

connector.

grounding.

cable

and

Active Adapter.

6. Perform a Preoperational Checkout.

Responsibilityofthe

Valleylab Incis responsible for the safety,

• installation procedures in this manual

Manufacturer

reliability,

are

followed.

and performance of the equipment only

• assemblyoperations, extensions, re-adjustments, modifications,or repairs

persons authorized by Valleylab Inc.

•

the

electrical installation of

such

asIEC

and

BSI.

the

relevant room complies with local

codes

and

• the equipment is used in accordance withthe Valleylab instructionsfor use.

following

steps:

if:

are

carried out by

regulatory requirements

Attach

Explosion

anesthetics,

the

Hazard. Do NOT install

gases,

Electrosurgical

liquids,orobjects.

Generatortothe

Valleylab recommends attaching

To attach

1. Removetwo of

2.

3. Attach

4. After mounting

the

electrosurgical generatorto the Force GSU cart:

the

The

removed feet

Center
removed rubber feet.

underneath

removed. Tighten

the

the

a. Hold

mechanism.

two rubber collars

generatortothe

the

b. Slightly

mechanism.

c. Tilt

the

slowly lower

are

the

cart

the

mounting platform securely before pressing

lift

the

top mounting

the

bottom feet from diagonally opposite

not

Place

top.

Use

the

screws

generator, adjust

backof

mounting surface.

DANGER

the

Force GSU

Force GSU Cart

the

Electrosurgical Generator to

used

for mounting. Retain

over

the

grommets on

the

generator

cart

using

the

existing

finger tight only.

the

mounting surface and

surfacetothe

on the carttop.

the

two fender

threadsinthe

the

platformasdesired.

desired angle, slowly

SystemInthe

the

comersofthe

the

rubbercollars.

the

cart

top which

washers

press

and

generator

the

button on

the

release

presenceofflammable

Force GSU Cart.

electrosurgical generator.

match

two nylon finger

chassis

button on

the

the

where

the

tilt adjustment

the

tiltadjustment

button to

locations of

screws

the

feet

were

secure,

the

and

Interface

the

Force

GSU

Unittothe

Electrosurgical

Generator

An ESU interface cable connects the Force GSU Unitto the electrosurgical generator and
and Coag signals through this

This

cableisstoredinthe

Properly
Ensure that

electrosurgical

Handset,

To

connect

connect

the

ensure

the

ESU

the

Active Adapter is fully inserted into the ACCESSORY

generator

the

interface

1. Open the Tank 2 side door to

2. Attach

3. Slide

4. Attach

the

ESU interface

the

ESU

the

ESU interface

interface

Monopolar Footswitch receptacle on

link.

This cable also couples the ground of the two pieces of equipment.

Unit

storage

ESU interface

and

that

RF link

has

cable:

access

cabletothe

cable

through

cable

compartment.

CAUTION

cable

no metal is

no metal

for correct operation of

exposed.

When

exposed.

the

using

the rear panel of the Force GSU Electronics

4-pin

from

the

the

the

connector on

rearofthe

rear

panel of

generator

Unit.

rear

the

the

Electronics

panel.

Electronics

Force GSU

receptacleofthe

the

Active Adapter with

Chassis

Chassis

Module to

sends

System.

Chassis

Module

the Cut

the

Module.

rear

the

5. Insert the Active Adapter into the Monopolar Active Footswitch (ACCESSORY) receptacle on the
generatorfront panel.

panel.

the

Install

%

Argon

Use

only

compromised.

High

Pressure

GSU

System

standards

national

The

gas

[tetrafluromethene],

%

GAS

TO

\i&^&Zjii£iiiiSSi86&

ESU

INTERFACE

CABLE

^

Figure 2.1 ESU Interface Cable

Gas

Tanks

High

and

codes.

line

THE

Purity

Hazard:

have

local

fitting in

FORCE

Do

Grade

been

codes.

NOT

this

helium,

GSU

(99.998%

Ensure

pressure

In filling

overpressurize

Unitiscompatible

krypton,

SYSTEM.

that

tested,

and

WARNING

pure,orbetter)

Argon

gas

tanks

certified,

the

tanks,

the

neon,

ensure

tanks.

with

nitrogen,

ACTIVE

ADAPTER

\

Active Adapter Connection

Argon

and

and

many

and

gas.

Patient

fittings

filled
your

common

xenon).

used

with

accordingtoapplicable

supplier

gas

meets

tanks

ONLY

::x:.':'::':

safety

the

may

Force

all local

(e.g.

freon,

CONNECT

.': 7

..,,,,,,:

V:....

.:.:„.,:::.:,:,::::::::,:.:,...

be

and

ARGON

To install

the

Argon

gas

tanksinthe

Force GSU Unit:

1. The

2.

Argon

wish to

storage

Follow

Gas Installation Instruction labels

use

an instruction label which istranslated in another language, retrieve the label from the

compartment

and

the appropriate safety precautions for handlinghigh pressure

3. Makesure the Force GSU

mode.

4. Lock

the

cart

casters.

TANK

Open

BUCKLE

(English

place

it inside

Unit

is OFF,and the electrosurgical generator is OFFor inStandby

the

side

VALVE

door.

the

side

language) are inside the

doorofTank

1.

GAS
COUPLING

LARGE

gas

tanks.

LINE

KNOB

RETAINING

Unit

STRAP

side door.Ifyou

5. Unbuckle

Figure 2.2 Argon

the

retaining strap and ensure that allpacking materials

Gas

Tank Installation

are

removed.

6. Carefully place the tank intothe tank cradle (tanksweighapproximately 35 lbs (16

7. Loosely attach the retaining strap by snapping the buckle together.

8. Remove the

remove

9. Orientthe tank

valve fitting, remove it.

the

gas

tank safety

gas

tank identificationtag(s).

with

the valve outlettowards the backof the cart.Ifthere is a safety plugon the tank

cap

and place it inthe

gas

cap

holder in the

base

of thecart. Do NOT

10. Secure the tank using the retaining strap.

11. Verifythat

- Looking at

12.

Align

large

Improperly secured

result in injury.

the

knob

the

correct

the

gas

linecouplingto the tank valve outlet. Carefullyconnect the coupling bytightening the

hand

front of

tight.

hose

is connected to

the

Unit,Tank 1 is on

gas

tanks and/or improper connectionof high

the

correct tank (Hose 1 to Tank 1

the

leftside.).

CAUTION

pressure

and

gas

kg)).

Hose 2 to Tank 2

lines may

10

13.

Open

the

a.
b.

tank valve

Press

the

Connect

the

and

Unit

power

Force GSU

check

for leaks.

switch in

Handsettothe

the

ON

(I)

position.

System.

c. Power on the electrosurgical generator and place itinthe Ready mode.
d.

Press

the green (+) button on the Handset to place the

Unit

e. Press the yellowCUTor blue COAGbutton on the Handset. While

pinch offthe

*

The

* An audible alarm

*

The

f.

Release

gas

lineto obstruct

OBSTRUCTION

electrosurgical

the

pinched

gas

indicator

sounds

generator

line.

gas

flow.

Verify

the following:

illuminates.

for approximately three

deactivates.

seconds.

inthe

Gas

On mode.

gas

flowsto the Handset,

14. Closethe side door and repeat this procedure forthe other tank

1-2

buttontoswitchtothe

Check

The Force GSU

the

Power

Connector

Unit

is supplied witha hospital-grade power connector. Your

withthe proper connectorforyour operating

other

tanktobe

room,ifdifferent fromthat supplied.

tested.

(if

available). Press

Unit

TANK

SELECT

should be equipped

The powerconnector meets all requirementsforsafe grounding. Itspurpose should not be defeated by

using extensioncords or 3-prongto 2-prong adapters. The powercord assembly should be periodically

checked fordamaged insulation or connectors. Cords shouldalways be grasped bythe connector. Do

NOT pullonthe

Ensure

Proper

cord

itself.

Grounding

To ensure patient safety, the Force GSU System must be properlygrounded.

Unit

The ground wire inthe power cord connects to the

flowfrom
or

2-prong

Undesirable leakage currents

responsibility of the

the

Unit.

the

Unit

electrical

cabinetinthe

adapters.

user

to ensure proper polarity and grounding ofthe power outlets supplyingpower to

event

of internal electrical failure. Do not

are

affected by the polarization of

chassis and ensures that no dangerous currents

use

extension

the

50/60 Hz input power. Itis the

cordsor3-prong

NOTE:Itis the user'sresponsibility to ensure thattheelectrical

with

local

codes

PerformaPreoperational

Before placing the Force GSU

6,

"Checkout

and regulatoryrequirementssuchasIEC

Checkout

System

Procedures."

intoclinical use, perform a system

and BSI.

11

installation

of therelevantroomcomplies

checkasdescribed in Section

SECTION

3

DESCRIPTION OF

A

ON

1

0

OFF

POWER

CONTROLS

CONTROLS,

80

m-ca

\OBSTRUCTtOt\

©

1

QASON

I

GAS

®

OFF

| G

4SRCWI

1

GAS

|

INDICATORS

A

FLOW

V

Figure 3.1 Force

4

GSU

~&>Ar

m ®

PURGE

LINE

GSU

AND

RECEPTACLES

II

HANDSET

GAS

Control Panel

pop

% PRESSURE % PRESSURE

I 7VWJCJ I I

LOPRES

/K

B8B

WMCg

I

LOPRES

QD

TANK

SELECT

1-2

^

|

I

ON

J_

O

OFF

GAS

FLOW

TANK

SELECT

1-2

<2>

PURGE

INDICATORS

GAS

UNE

FLOW

Power On/Off Switch - This switch supplies power to

GSU

Unit

and

containsacircuit

Flow

Control - Allowsthe user to adjust the Argon gas flow setting.

Each press of a green

one

change

increment. Continuously pressing

GAS

flow setting to increase or

minimum

limit.

breaker.

FLOW button

causes

decreaseinstepstothe

the

the

button

maximum/

the

Force

Flowsetting to

causes

the

Tank Select Button- Select eitherTank 1 or Tank 2 manually using

this

blue

button.

Gas Line Purge Button- Pressing this button
discharge of Argon gas through the gas tubing at

gas

setting. This is used to purge the

Gas

Flow Indicator- This indicatorilluminates

or

Gas

Shrouded

Cut

featureisactivatedorwhen

tubing.

button is pressed.

causes

the

when

the

a brief

current

the

Gas

PURGE

gas

Coag

flow

LINE

TANK1

TANK

2

Tank Indicators -

the

selected

gas

The

appropriate indicator illuminates to indicate

tank.

12

GAS

GAS

0

0

ON

OFF

Gas

On

Mode

Indicator-

green

(+)

button is

indicates that

pressedonthe

gas

is available to

Coag or Gas Shrouded Cut

activated.

Gas

Off

Mode

Indicator-This

gray (-) button is

indicates that
Handset

canbeusedinthe

pressedonthe

gas

is not available to

This

indicator

Force

the

mode

activates

indicator

Force

standard Cut

illuminates

GSU

when

Handset. This

Handset, therefore

when

the

illuminates

GSU

the

Handset, therefore

and

when

Handset. This

Coag

modes.

the

the

Gas

Handset is

the

the

%

ALARMS

88

<2>

eee

PRESSURE

LOPRES

OBSTRUCTION

Flow Display- Gas flow is indicated on a scale of 1 to 10 which

corresponds to a range of approximately 2 to 16 standard liters

per minute.

% Pressure Display - Indicates tank pressure

0%.

Low

Pressure

illuminates

flashes

5%.

Gas

Line

the

indicator

The

Alarms-The

when

and a

tone

Obstruction

illuminates

initial

gas

flow setting is 1.

Tank1or

the

tank pressure is below 10%.

sounds

when

Alarm-When

andanalarm

both

Tank2LO

tank

a line

tone

status

PRES

The

pressures

obstruction

sounds.

from

indicator

are

occurs,

100%

indicator

less

to

than

RECEPTACLES

*?J

GSU

l°A^

HANDSET

-^>

Ar

®

GAS

Handset Receptacle -

Force

GSU

Handset.

Gas

Line Receptacle - This luer receptacle

filter of

the

Handset

13

Accepts

gas

the

line.

3-pin

connector of

accepts

the

the

particle

SECTION

4

TECHNICAL

OPERATING

SPECIFICATIONS

PARAMETERS

Temperature Range: 10° to 40° C

Humidity Range:

Atmospheric

STORAGE

Pressure:

AND

Temperature Range:

30%

to 75%,

500to1060

SHIPPING

-18°

to 70° C

non-condensing

millibar

Humidity Range: 10% to 100%, non-condensing

500

Atmospheric Pressure:

INPUT

POWER

SOURCE

No switching required.

Current: < 1

ampere

to 2500 millibar

The

line frequency may vary between 47 and 63 Hz.

Maximum Operating Range: 85 - 264 Vac Nominal Operating Range:

LOW

All

FREQUENCY

patient-connected

LEAKAGE

terminals tied together:

(50/60 Hz)

Source current normal polarity,intact chassis ground
Source current normal polarity,ground open
Source current reverse polarity, ground open
Sink current, 110V applied, ailinputs

110V

<10uA

<100uA
<100uA

<100uA

Sink current, 220V applied, allinputs

Chassis source current, ground

GAS

2-16

AUDIO

FLOW

standard

VOLUME

RANGE

liters/minute±10%offull

open

<100uA

scale.

110-120

220-240

220/240V

<2.0uA

<50uA
<50uA

<50uA

<100uA

Vac

Vac

The

alarm

tones

are

set

to a level of >65 dBA at 1 meterand are not adjustable.

14

APPROXIMATE WEIGHT (two full

166

pounds;

75,3

kilograms

tanks,

no generator)

APPROXIMATE

21 x39x28inches;

Use

Argon

gas

DIMENSIONS

53x99

tanks

with

x 71

the

centimeters

following

specifications:

Outside Diameter: 7 inches (18 centimeters), max

Height (with valve):

Pressure:

Max

Specifications

subjecttochange

24

inches

3000

(60 centimeters), max

psi (20600 kPa) (200 bar, nominal)

without notice.

15

SECTION

5

THEORY

This

section

Block

Diagram

found inthe Control DisplayBoard schematic inSection 14 of this manual.

FUNCTIONAL

The

electronicsofthe

following:

•

Direct

• ControlArgon

•

Monitor

-

gas

-

low

-

dosage

- power supply voltage ]

OF

OPERATION

provides

the

appearsatthe

DESCRIPTIVE

interface

error

line obstructions

tank

signals

gas

deliveryat digitally preset

conditions:

pressures

error

circuit

Force

from

for

theory

endofthis

GSU

Unit

the

Force

each

tank

and

basic

section.

information

The

regarding

reference

designators

OVERVIEW

performavarietyoffunctions.

GSU

Unittothe

flow

associated

rates

the

Unit

circuitry.AFunctional

usedinthis

These

electrosurgical

functions

generator

section

are

consistofthe

(ESU)

-

proper

- software errors T

• A special error routinefor lineobstructions to exhaust the pressurized

• Automatic selection or switching of Argon

• Allows

Force

• Allowsfor

• Allowsfront panel control

• Digitally displays the % pressure available in

•

Has

Handset

• Allows

•

Provides

clock signals

gas

tank

lines

the

surgeontoselect

GSU

Handset

the

user

to purge

isolation electronics to prevent dielectric breakdown between

button

the

safe

unit to

shut

functions

operate

downincaseofpower

gas-enhanced

the

attached

and

monitoringof the Argon

from 85 to

264

gas

Vac

failure.

operation or normal electrosurgical operationthrough

tubing

gas

tanks

each

Argon

gas

tank

and

between47and

gas

inthe line

the

RF electrical signal

63 Hz

and

the

the

16

CIRCUIT

The

Valleylab Force

microprocessor is

functions

DESCRIPTIONS

the

Unit requires.

GSU

Unit is controlled by an Intel 8749H single-chip microprocessor (uP). This

the

main control device, and with support hardware, performs all

the

necessary

An Isobloc circuit isolates

the

keying leads

maybeelevated

leads cannotbecoupled to ground. U18 forms a 60 kHz oscillator

The

and R29.

The

switches on

oscillator output drives a flyback Power Supply Circuitthat provides a floating DC supply.

the

signals are optically isolated and

determines which

key

octal buffer (U4) interfaces

An octal latch (U3) performs external

Enable Not (ALE/) line is

microprocessor first places

ALE/ in

that

the

octal latch. The latchoutputs are used as chip selects forthe various external circuitmodules

the

microcontroller

U10 is a Pulse Delay Circuitthat delays
cycle to

(DAC). This
The

meet

timing requirements

ensures

microprocessor

the microprocessor ifit is not toggled at a predetermined rate. This

and

Handset

detects

setupcoded

the

to relatively high RF voltages. To maintain an isolated generator,

then

senttothe

is closed and performs

the

microprocessorto the control panel and

address

the

latching signal. In ailexternal

the

address on the address/data

accesses.

setbythe

that data is stable at

system

algorithm interfaces with a hardware

keying signals from

keying signals through

microprocessor fordecoding.

the

necessary actions in

selection

the

microprocessor's READ and WRITE signals by

analog to digitalcircuit (ADC) and

the

time that it is read or written.

and

the

Handset. This is

whose

the

frequency is

multiple comparator (U17).

The

responsetothe

the

keying signals.

chip

select

generation.

address

bus

read

and

write

line, and this information latches using

the

Watchdog

ensures

Timer Circuit (U2) that

that

the

necessary

set

because

by C19, R28,

microprocessor

key

closure. An

The

Address

accesses,

the

one

digitalto analog circuit

microprocessor is

runningits control program and has not failed. Another function of the Watchdog Timer Circuit is

inhibiting

period by shutting off

the

operation of

the

the

tank valves and the electrosurgical generator keying during the initialization

switched

+12VSW

during this time.

these

These

Latch

machine

resets

The

thermal

that

hasa0-4

output is DC amplified by U20D to give a

mass

flow

The

Dosage

of range. It is controlledbythe

comparator level on U21A. This is compared to a feedback signal of

flow if

(DOSERR/),

DOSERR is considered a machine error and requires pressing

and on to clear

the dosage errorcomparator.

seconds.

A

second

an LM350 (U22)

mass

flow meter

Vdc

output at J5 corresponding to

meter

is 21

degreesC,760

Error

Circuit (U8D, U21A-B) determines if

the

two signals don't agree.

sounds

an audible alarm, and flashes all 111's on

the

error condition. U8 in this circuit is an integrator to eliminate

D/A converter(U5)

which

then

measures

the actual gas

0-16

0-8

Vdc signal for

flow.

SLPM (standard liters

torr, and calibrated with Argon gas.

the

D/A converter(U7).

The

microprocessor also

The

time

needed

sets

the

gas

flow rate. This analog signal

delivers a controlled voltage to

The

fora DOSERR tobedetected is approximately two

This component is a true

the

rest of

gas

flow rate delivered is within limits or is out

microprocessorwrites a word to

the

the

checks

the

the

the

displays if an error is detected.

the

Unit power switch to turn

control

valve.

basically a microprocessor-controlled digital/analog servo loop regulating

the

flow immediately

presentinthe

rate,

and

microcontrollerto allow

the

second

A display multiplexerchip (U15)

of an

8x8

RAM that contains

shuts

off if a Dosage ErrorSignal is detected.

the

gas

flow.

The

signal is

the

GASEN/

addresses

the

BCD format for

signal that allows

the

7-segment

the

display digitsaswellasthe

Two

first signal is

the

the

LM350 to

LED displays. This read-only device consists

mass

flow device

per

minute).

circuitry.

This

The

standard forthe

the

0-4

D/A to

actual flow rate and inhibits

output of this circuitry

the

noise

from

the

output of

connectstothe

This

the

Argon

actuating signals

digital

word

operate.

LED lamps.

adjustterminal of

entire circuit is

gas

flow. Note that

must

that

sets

the

The

be

Vdc

set

gas

Unitoff

flow

SEG

a

H

17

line multiplexes the LEDlamps on and offthrough Q13 and Q14. U16 amplifiesthe output signals for the

LEDs

(the

digit

drive

lines).

U23

makesupthe

and amplifiesthem to be digitizedfor control algorithm use. The offset and gain adjustment pots allowfor H

differencesintransducer

differential amplifiersthat receive the pressure signals from

and

amplifier

performance

and

balance.

the

two tank transducers

A bridge-type pressure transducer (U19)

delivery

and
has

An

digitizes them. The microprocessor

wellasfor inputsto control algorithms. Inaddition to controlvoltages, the converter monitorsthe +12V H

power

microcontrollergenerates thetank valve control, generatorkeying signals, etc.

using eithersmallsignal FETs, relaysor bipolar transistorsto ensure enough drivecurrent and/orvoltage ^
to the device beingcontrolled. These devices also isolatethe microcontroller outputs fromthe devices

under

The

generates

for. _

Anumber ofimportant internal test signals have been broughtoutto TP1-12 to

troubleshooting and finaltesting. These signals are the

Test

TP-1

TP-2

TP-3

TP-4

TP-5

TP-6

TP-7

TP-8

TP-9

TP-10

TP-11

TP-12

tube.

U20Aisa

R60

sets

the

gain of this circuit. This level ofthe signal (DLPRES) determines ifa line obstruction

occurred causing

A/D

converter

supply

controlincaseoffailure.

Audio

Point

voltage

Annunciator

the

oscillator

the

(U6)

for

differential

pressureto increase beyond allowable limits.

takes

the

analog

internal

Circuit

enable

Name

AGND
+5

+12FIL

-12V

DLFLOW

DLPRES

T1PRES

T2PRES

FLOCON

ERRLIM

DOSERR

3MHZ

calibration

consistsofan

signal (TONEN/)

senses

amplifier

uses

and

signals

these

and

(tank

signals to ensure properoperation of control blocks

ensures

oscillator

and

the delivered pressure at

U20Dagain

pressures,

and

inhibits

following:

Function

analog ground

+5 volt supply

+12 voltfiltered supply

-12

volt supply

0-8V =
0-10V=0-30

T1 pressure 10V=3000 psig

T2 pressure 10V=3000 psig

0-10V

0-10V

5V CMOSerror signal

microprocessor clock oscillator signal

signal to flow valve

signal to error limitcircuit

the

proper

FET

the

0-16

SLPM output

stage.

flow

speaker

oscillatorfunction until a

psig output

the

proximal

R67

provides

control,

error

limit

operationofvoltage

and

then buffers them

driver.

The

simplify

endofthe

offset

adjustment,

voltage,

references.

etc.)

and

as

The

microcontroller

tone

is called

Unit

A45 watt switchingpower supplypowers the Force GSU

0.5 amps, and +5 Vdc at 3 amps. Itis a universal inputdevice, meaning it is capableof accepting from
85 to 264 Vac at 47 to 63 Hzwith no mains or power supply switching necessary.

The pneumatic portion of the Force GSU Unitconsists ofthe high pressure plate,

two cylinders of

into a compartment in the

tank's supply line

pressure

The

90 psi lines from

reducedto35

compressed

goes

is reduced to 90 psi. Each

each

psi

and

Argon

base

of the Force GSU cart to the High Pressure Regulator Module. Here

to a pressuretransducer and then through

tank

join together

controlled by

gas

pressurized to a maximum of

gas

the

line then

servo

and

go through

system

passes

Unit.

Itprovides +12 Vdcat 2 amps,

the

3000

psi.

The

the

first

stage

of regulation where its

through the electrical shutoff valve for

another

described

18

above.

regulator

where

flowcontrol,

gas

is piped down

the

pressure

-12

that

Vdcat

and

each

tank.

is

AC

85-264

47-63

GAS

LINE

Vac

Hz

OUTPUT

HANDSET

- • - i

ISOBLOC

CIRCUIT

CONTROL

PANEL

RELIEF

VALVE

CIRCUIT

BREAKER

2

AMP

8749H

MICROPROCESSOR

SWITCHING

POWER

SUPPLY

W/2AFUSE

AUDIBLE

ALARM

DISPLAYS

+12

VDC

-12VDC

+

5VDC

INTERFACE

CABLE

ESU

GAS

TANK

INPUT

GAS

ELECTRICAL

LINE

1.2

micron

FILTER

PRESSURE

XDUCERS

FOR

TANKS

1AND2

1st

STAGE

REGULATOR

A/D

PRESSURE

XDUCER

TANK

SWITCHING

I

D/A

90

PSI

D/A

2nd

REGULATOR

STAGE

FLOW

METER

35

PSI

0.1

FILTER

micron

Figure 5.1 Functional Block Diagram

19

AC

RECEPTACLE

£

o

AC

INPUT

CART

ASSEMBLY

HANDSET

GASIN

r-oa-

0}

I

-LD-

I
I

|

L

MODULE

FILTER

CONTROL

PANEL

BOX

ji

J2

J3

J4

J6

A

FLOW

VALVE

PRESSURE

UNE

FILTER

POWER

SUPPLY

s

J5

PCB

J7

:>-<:

TRANSDUCERS

H

J8

J9

CIRCUIT

BREAKER

PRESSURE

XDUCER

>i

FLOW

METER

2A

D-i

1

y

RELIEF

VALVE

V

GAS

.OUT

'--

-JOQ--IFILTER

P

n 1

.j

GAS

LINE

ELECTRICAL

PRESSURE

XDUCER

1

1st

STAGE

REGULATOR

HIGH

2nd

STAGE

REGULATOR

Figure 5.2 Force GSU Interconnect Diagram

20

PRESSURE

1st

STAGE

REGULATOR

ASSEMBLY

?n

PRESSURE

XDUCER

2

/

ARGON

A

TANK2

|

J

SECTION

6

CHECKOUT

This section provides checkout procedures to

the Unitfails to meet any of

PROCEDURES

the

checks, refer to Section 8, "Overall SystemTroubleshooting."

verify

that the Force GSU System is functioningproperly.

Some checkout procedures require partial disassemblyof the

Procedures,"for

GENERAL

Electric

Do NOT

Electronics

Take appropriate precautions (such as

hand

Electric

Unit Is

disassembly

TEST

Shock

INFORMATION

Hazard:

comeIncontact

Chassis

rule," etc.)

Shock

disassembled

when

Hazard: Do NOT

instructions.

The

lower heatsinkonthe

with

it. Do NOT

ModuleorTP-1asa

taking

and

measurementsortroubleshooting

touch

energized.

any

WARNING

use

it for ground. Use

measurement

use

of Isolated

exposed

power

Unit.

Refer to Section 11, "Replacement

supply

ground

tools

wiring or

is at an elevated voltage.

the

chassisofthe

reference.

and equipment;

the

Unit.

conductive

useofthe

surface

while

If

"one

the

CAUTION

The

Unit

contains electrostatic sensitive components. When repairingthe

Unit,

work at a static
controlworkstation. Wear a grounding strap when handling electrostatic sensitive components.
Handle the circuitboards by their nonconductive edges. Use an antistatic container fortransport

of electrostatic sensitive components and circuitboards.

Whentesting,

follow

propertesting procedures inorderto duplicate manufacturertest data. Keeptest

leads as short as possible. Lead inductance and straycapacitance can affect meter readings adversely.

Useof uncompensated scope probes maycause largeerrors inmeasurements. When measuring

microampere leakage currents, accidental capacitive or inductivecoupling may

order-of-magnitude errorin

the

observed values.

Performthe leakage current and ground resistance tests before returningthe

cause

Unit

to clinical use.

21

RECOMMENDED

You

will

need

the

TEST

following equipment to perform

EQUIPMENT

equipment isused, itmustmeetor exceedthe

the

checks

specifications

described in this section. Ifsubstitute

ofthe recommended equipment. ^

Description

Specifications

DigitalMultimeter Fluke 77 or 87, or equivalent

Oscilloscope Tektronix 2445, or equivalent
Leakage Current

Leakage Table

Row

Meter 0

Tester

UseULload device or commercially available leakage
Per

IEC specifications

-20

SLPM, 21

- Sierra Instruments

degreesC,760

821-S,

Force Electrosurgical Generator Series 2 or 4

2 bottles of Argon Withknown

gas

pressures

(within 100 psig)

CylinderPressure Gauge/Regulator 0 - 3000 psi cylinderpressure,

Gas

Pressure

Force

GSU

MECHANICAL

This inspection

Unitis NOT

Control

Handset

connected

Panel

Gauge

INSPECTION

assumes

familiaritywith

0-35

the

psig

Unit's controls, indicators,

to powerwhen performing this inspection.

torr, calibrated with Argon

or equivalent

0-50

and

psi delivery pressure

receptacles.

Ensure

tester

that

gas

the

1. Check

the

followingcontrol panel receptacles for

damage

or corrosion:

a. GAS (luer lock)

b.

GSU

HANDSET

2. Using a

3. Check

Rear

Verifythat all connectors

the

Panel

banana

plug,

check

ON/OFF switch for

Connectors

are

each

connection for obstruction

damage

or corrosion.

properly and securely tightened.

and

secure

fit.

Adjustable Platform '

Check that

1. Simultaneously

2. While pressing

ranges.

3. Return the platform to the desired position,

the

Unitplatform easily adjusts.

lift

the

platform slightly,

the

release button, raise and lower

and

press

and

the

the

release

release

button.

platform to

the

release

the

button.

limitsof

the

high

and

low

22 J

Power

1.

Remove

Cord

the

power

cord

from

the

Unit.

2. Disassemble the power cord connector and inspect for

screws

3. Assemble

4. Clean

install

POWER-ON

This

1. Plugthe

2.

Press

3.

The

the

the

test

verifies that

the

Unit

are

tight.

the

power

powercord with a

powercord

SELF

Unit

and electrosurgicalgenerator powercords

power switch in

conducts

connector

assembly.

TEST

the

Force GSU Unitpowers on and properly performs the self test.

a self

the

test.

and

inspect

damp

cloth and milddetergent. Let

ON

(I)

position.

Check

the

following:

the

power cord for

WARNING

damage

into

or corrosion. Ensure that connector

damage.

the

power cord completely dry and

a hospital-grade grounded receptacle.

a. Bothtank indicators illuminate for approximately0.5 seconds at the start of the test.

b.

All

other

LED indicators illuminate all

seconds).

888s

for the remainder of

the

self

test

(approximately 10

4. After

FUNCTIONAL

Thistest provides a checkoutprocedureto

itis

the Force GSU

Force Electrosurgical Generator, referto the appropriate Instruction

as

1.

the

self

test,

verify that:

a. Tank 1 is selected.

b. A single

c.

GAS

powered

tone

FLOWissetto1

TEST

on and used

Unit,

(If

Tank 1 is empty or closed, Tank 2 is selected.)

sounds.

WITH

with

and that the

and

gas.

the

Unit is in

GAS

This

Argon

the

Gas

Off

mode.

verify

thatthe ForceGSUSystem is

functioning

test assumes thatthe electrosurgical generatoris connectedto

tanks are installed. Forcomplete instructions regarding usingthe

Manual.Ifthe

Unit

does not perform

properly

described inthis test, refer to Section 8, "OverallSystem Troubleshooting," forfurther information.

Connect

a. Attach the filterend of the Handset

the

Force

GSU

Handsettothe

System.

gas

tubingto the

Gas

Line Receptacle on the

Unit

control

panel. Rotate clockwise untilfinger tight.

b. Plugthe 3-pin Handset connector

into

the

HANDSET

receptacle onthe Force GSU

Unit

panel. Do NOTplug the 3-pin Handset connector intothe electrosurgical generator.

link)

to the

Active

c. Connect the Handset banana lead (RF

CAUTION

Adapter on the electrosurgical generator.

when

control

Ensure that the

Active

Adapteris

fully

inserted

into

the

ACCESSORY

generator and that no metalisexposed. When usingthe

RF link

has

no metal

exposed.

23

Active

receptacle ofthe electrosurgical

Adapter

with

the Handset, ensure the

GAS

LINE

FILTER

Figure

6.1

Connecting the Force

GSU

Handsetto the Force

2. Power on the electrosurgical generator and placeitin

a.

Press

the generator rear panel power switch ON

(I).

b. Afterthe generator performs a self test, short the generator

c.

Press

the

generator

d.

Ensure

Keep

Handset

3.

Verify

a. Press the

Set

b.

Ensure

that all

the

Handset electrode away from personnel. Usethe AccessoryHolster to

safely.

that the control panel controlsoperate correctly.

GAS

the

gas

flow to 10.

that

both

tanks have sufficient pressure.

c.

Press

and release the PURGE

approximately

current

gas

setting.

READY button.

generator

FLOW

gas

power levels

UP/DOWN

tank

valves

buttons.

are

Verify

LINE

are

open.

that the

button.

threeseconds, and thatthe

set

at one.

WARNING

Verify

Pressthe

Unit

Verify

Unit

discharges

that thedisplay varies

GSU

System

the Ready mode.

REM

connector.

hold

the

from

1 to 10 and 10 to 1.

TANK

SELECT

toggles between

that the GAS FLOW indicator illuminates for

Argon

gas

1-2

TANK

through

button.

1 and

the gas

Verify

TANK

that

2.

tubing

both

atthe

4. Verify

gas

flow

and

ESU control.

a.

Press

the green (+) button on the Handset.

tone

sounds.

Verify

b. Press the yellow CUTand blue COAGbuttons, and

that the GAS ON indicator illuminates

verify

that the ESU activates after

approximately a 0.2 second delay, and that gas flowsto the Handset when activating CUT and

COAG.

24

and

a

c.

Press

sounds.

Handset.

the

gray (-) button on

Press

the

yellow

the

Handset. Verify that

CUT

and blue COAG buttons,

the

GAS

OFF indicator illuminates, a

and

verify that no

gas

flows to

tone

the

5. Verify that

a.

Press
Press

b.

tone

c. Press

Handset, pinch off

*

* An audible alarm

*
*

d. With the gas line

the

Gas

Line Obstruction Alarm operates properly.

the

GAS

FLOW UP/DOWN buttons to

the

green

(+)

button on

sounds.

the

yellow CUT button orthe blue COAG button on the Handset. While

the

gas

The

OBSTRUCTION

sounds

released.

The

gas

line

depressurizes.

The

electrosurgical generator deactivates.

still

pinched off, press the yellowCUT button orthe blue COAG button on the

the

Handset. Verify that

line to obstruct

indicator

for approximately three

the

illuminates.

set

gas

the

gas

flow to 5.

the

GAS

flow. Verify

seconds

ON indicator illuminates

gas

the

following:

or untilthe CUT or COAG button is

Handset. Verify that the alarm recurs. Release the pinched gas line.

6. Verify that

a. Turn off both

yellow CUT button on

the

Low Pressure Alarms operates properly.

tank

valves.

the

Press

the

Handset.

GAS

FLOW UP button to

set

the

gas

flow to 10. Press

b. Observe a decrease in the pressure of the tank being used. Verifythat LO PRES indicator

illuminates

for

the

tank

below

10%.

and

flows to the

that a

the

c. Observe a tank switch when the pressure is below 5% and a flashing LO PRES indicator.

d. Continue to press the yellowCUT buttonon the handset. Verifythat the LO PRES indicator

illuminates

for

the

second

tank

below

10%.

e. Verifythat both LO PRES indicators flash and that an audio alarmsounds when both tanks are

below

5%.

f. Press the gray (-) button on the Handset. Verifythat the audible alarmdoes not sound.

g. Pressthe

mode

h. Press

mode

7. Press

8. Press

9.

Remove

the
the

yellow

illuminates.

the

blue COAG button on the Handset. Verifythat the generator's blue lamp in the Coag

illuminates.

Unit power switch in

CUTbuttononthe Handset.

the

OFF (O) position.

Verify

thatthe generator's

yellow

lampinthe Cut

generator rear panel power switch OFF (O).

the

REM

connector

short.

25

Checking

Leakage

Current

and

Ground

Resistance

Check

Third wire leakage current is

the1kohm

the

leakage current

resistorfrom

and

ground resistance before returning

measured

chassis

to ground. The maximum voltage

microamps leakage would be 100

for

this

test.

Line cords longer

than

15 feet or extension cords increase the third wire leakage

recommended. Withthe Force GSU

microamps.

Equipment

DVM

Leakage

Required

current

tester

by opening the

millivolts.

Unit

0.15

the

Force GSU Unitto clinical

green

grounding wire at

across

Commercially available leakage current

the

plug

the1kohm

and

and

resistorfor

testers

are

not

connecting

maybeused

turned off,the thirdwire leakage should be less than 10

10.2

uf

ohms

-VVV-n

VNAA

1000

ohms

use.

100

Figure 6.2 Leakage Current

1.

With

the powercord assemblyconnected

cord ground prong to all

0.1

ohms

at 25

amps.

NOTE: To eliminate

exposed

effectsofcontactresistance, this

2. Measure the leakage currentofthe

metal on

Unit

following

only

the

tothe

chassis.

shouldbea

the instructions supplied

Test

Circuit

Unit,

measure the resistance throughthe power

The

measured

4-wire

resistance

resistance

with

yourleakage current

must

not

measurement.

tester. This leakage currentmust notexceed 100 microamps at 120voltsor 50 microampsat 220

volts.

3.

Record

an

the resultsforreferencein

impending failure.

future

resistance/leakage tests. A

significant

change mayindicate

exceed

26

SECTION

7

MAINTENANCE

ROUTINE

Valleylab recommendsthat

months. Check

Valleylab recommends replacing

Calibrate

maintenance

This Service Manual describes

major repairs,

available from Valleylab. Refer to Section 13, "Service Parts List"

Schematics"

CLEANING

Clean
clean the cart surfaces, control panel,

MAINTENANCE

the

the

Unitevery six months ifnecessary. The procedures describing how to perform this

are

within

the

for

additional

INSTRUCTIONS

the

Force GSU Unitusing standard hospital procedures. Use a milddetergent

PROCEDURES

AND

the

Force GSU Unitbe inspected by qualified service personnel every six

powercord assembly periodically for

the

this

manual.

the

Unitor modules

information.

INSPECTIONS

internal filterand functionally checking

recommended inspection, testing,

can

be returned to Valleylab. Repair parts

and

cords. Do not allowfluids to

damaged

insulation or connectors.

the

Unitevery six months.

and

calibration procedures. For

and

information

and

Section 14, "Assemblies

and

enter

the

chassis. Do not

caustic, corrosive, or abrasive cleaning materials. The Unit, cart surfaces, control panel,

be

completely dry before

use.

damp

and

cords must

are

and

cloth to

use

The

Force

GSU

Unit

Electric

wall

STORING

When

the

Shock

outlet.

THE

Force GSU

cannot

Hazard: Do NOT install a

FORCE

System

be

sterilized.

GSU

is not in

SYSTEM

use,

WARNING

wet

power

disconnect the Force GSU Unit powercord assembly from

the wall receptacle. The ESU interface cable connecting

remain

connected

unless

the

electrosurgical

generatorisused

cord

assembly

the

Unit

and

electrosurgical generatorshould

by itself with a footswitch.

into

the

Unit or

into

a

27

ARGON

Use

GAS

only

compromised.

High

Pressure

GSU

System

standards

national

The

gas

[tetrafluromethene],

GAS

TO

TANK

REPLACEMENT

WARNING

High Purity Grade (99.998% pure,orbetter)

Hazard:

have

and

local

codes.

Do NOT

line fitting in

THE

FORCE

been

codes.

this

helium,

GSU

Ensure

pressure

that

tested,

In filling

overpressurize

Unit Is

compatible

krypton,

SYSTEM.

Argon

the

neon,

gas

tanks

certified,

tanks,

the

tanks.

with

nitrogen,

ensure

and

many

and

Argon

and

filled

your

common

gas.

fittings

Patient

used

with

safety

the

accordingtoapplicable

supplier

xenon).

gas

ONLY

meets

tanks

CONNECT

all local

(e.g. freon

may

Force

be

and

ARGON

To replace

1. Follow

the

Argon

gas

tanks inthe Force GSU

the

appropriate safety precautions for handling high pressure

cap(s) before proceeding.

2. Make sure the Force GSU

the

valves on both Argon

3. Lock

the

cart

casters.

TANK

BUCKLE

Open

Unit:

gas

tanks. Obtain tank safety

Unit

is OFF, the electrosurgical generatoris offor in Standby mode, and

gas

tanks

are

completely closed.

the

side

door.

VALVE.

GAS

LINE

COUPLING

LARGE

KNOB

RETAINING

STRAP

Figure 7.1 Argon

4. Itis normal for a small amount of Argonto

fromthe high pressure

turning

the

large knob. Use a wrench to assist loosening this connection.

5. Loosen but do not remove

6. Attach

7. Unbuckle

the

safety

the

retaining

lbs (16 kg).) Refillor replace

8. Carefully place

the

gas

line, holdthe

the

retaining strap.

captothe

strap

top of

and

the

the

carefully

tank.

replacement tankinto

tank.

Gas

Tank Replacement

escape

gas

lift

the

during this procedure. To disconnect

the

linecoupling stationary and loosen the coupling by

the tank from the cart. (Tanks weigh approximately 35

tank cradle.

28

tank

9. Loosely attach the retaining strap by snapping the buckle together.

10. Remove the

remove

11. Orient

the

the

tank

valve fitting, remove it.

12.

Secure

13. Verify that

- Lookingatthe

14. Align
large

the

the
knob

the

gas

hand

Improperly
result in injury.

15.

Open

the

valve

Press

a.

b.

c.

d.
e.

the

Connect

Poweronthe

Press

the green (+) button on the Handset to place the

Press

the yellow CUTor blue COAG button on the Handset. While

pinch off the

*

The

OBSTRUCTION

* An audible alarm

*

The

electrosurgical

f.

Release

gas

tank safety

gas

tank identification tag(s).

with

the

tank using

correct

front of

line coupling to

tight.

secured

"™"_

and

check

Unit

power

the

Force

cap

valve outlet towards

the

retaining strap.

hoseisconnectedtothe

the

Unit,

the

gas

tanks and/or improper connection of high

'""""".„

for leaks.
switch in

GSU

electrosurgical

gas

line to obstruct

indicator

sounds

generator

the

pinched

gas

and place it inthe

Tank

1 is on

tank

valve outlet. Carefully

CAUTION

the

ON

Handsettothe

generator

gas

flow.

illuminates.

for approximately

deactivates.

line.

gas

cap

holder in the

the

backofthe

cart.Ifthere

correct tank. (Hose 1 to

the

left side.)

connect

„.„

,...,

(I)

position.

System.

and

place it in

the

Unit

Verify

the following:

three

seconds.

base

of the cart. Do NOT

is a safety plug on

Tank1and

the

coupling by tightening

Ready

pressure

mode.

gas

inthe Gas On mode.

gas

flowsto the Handset,

Hose

2 to Tank 2

lines may

the

tank

the

16.

Close

the

side

door.

29

INTERNAL

FILTER

REPLACEMENT

Thisprocedure describes howto replacethe

internal

filter

and hose assembly.

Valleylab

recommends

internalfilterreplacement every six months. Obtain the internalfilterpart number from Section 13,

"Service Parts List," and orderit from Valleylab CustomerService at

1-800-255-8522

or your Valleylab

representative.

Equipment

Slotted

Pliers

1. Turn off both Argon

2. Purge both

3.

Press

4. Unplug

5. Remove

Procedures,"

6. Remove

Required

Screwdriver

the

Unitpower switch inthe OFF (O) position.

the

the

the

1/8"

gas

tanks.

gas

lines. (Refer to Section 11, "Replacement Procedures," for further information.)

Unitpowercord from

Electronics

Chassis

the

wall receptacle.

Modulefrom the

Unit.

(Refer to Section 11, "Replacement

for further information.)

cover

from

the

module by loosening

the

two

thumb

screws

located on

the

module

panel.

7. Locate

the

internal filter,

and

note

the

properflow orientation.

rear

FLOWCONTROL-

VALVE

HIGH

VALVE

PRESSURE

MASS

FLOW

METER

ESU
INTERFACE

RELIEF

VALVE

INTERNAL

FILTER

HIGH

PRESSURE

TRANSDUCER

HOSE

CLAMPS

7. Using

8. Gently

the

pliers, remove

loosen

and

Rgure 7.2 Internal Filter

the

black

hose

remove

the

internal filter

and

clamps from

and

hose.

30

Proper FlowOrientation

each

sideofthe

filter

assembly.

CAUTION

Do not

barbs

9. Connect

use

a knife or similar metal object to remove the filterassembly hose. This

and

cause

the

connection

the

new internal filter and

to

leak.

hose

and replace the hardware. Verifythe properflow orientation.

10. Secure the Electronics Chassis Module inthe

for further information.)

11. Verify

12.

13. Unplug

14.

15.

that

there

are

no leaks.

a. Reconnect the Argon
b. Plug

c.

d. Turn on
e. Verify

Press

Place

module

Secure

for further information.)

the

Unitpower cord into a hospital-grade grounded receptacle.

Press

the

power switch in

the

gas

that

there

connections.

the

Unitpower switch in

the

Unit

power

the

coveronthe

rear

panel.

the

Electronics

tanks.
arenoleaksatthe

gas

hose

to the Electronics Chassis Module rearpanel.

the

ON (|) position.

the

OFF (O) position.

cord

from the wall receptacle.

module. Attach

Chassis

Module in the Unit. (Refer to Section 11, "Replacement Procedures,"

the

Argon

cover

will

damage the

Unit.

(Refer to Section 11, "Replacement Procedures,"

gas

hose

connections

by tightening

the

two

and

thumb

the

internal filter

screws

located on

assembly

the

CALIBRATING

This

procedure

Precalibration

the

it. If

Unit

Procedure. If

according to

continue performing

PRECALIBRATION

The

Precalibration

performed in
This

procedure

the Argon tanks

THE

FORCE

contains

Check

passes

the

Unit

the

appropriate corresponding

order

assumes

are

a Precalibration Check Procedure

Procedure to verify that

the Precalibration Check Procedure, itis not

does

not

passastepofthe Precalibration Procedure,

the

Precalibration Check Procedure.

CHECK

Check

to continue

Procedure contains six steps. Each

the

that

the

installed.

The

GSU

PROCEDURE

next Precalibration

electrosurgical

test

UNIT

and

the

Force GSU Unitis functioning properly before calibrating

stepofthe

Calibration Procedure. Afterthe adjustment,

step.

generatorisconnectedtothe

points referenced in this procedure

a Calibration

necessary

step

contains

Procedure.

to perform

then

adjust the Unit

substeps

Force

are

inthe Control Display

Perform

the

that must be

GSU Unit,

Calibration

and

Board schematic in Section 14. For complete instructions regarding using the Force Electrosurgical

Generator, refer to

Electric
Do NOT

Chassis

the

appropriate Instruction Manual.

Shock

comeIncontact

Hazard:

The

with

ModuleorTP-1asa

lower

heatsinkonthe

it. Do NOT

measurement

WARNING

use

it for

ground

power

ground.

reference.

supplyisatanelevated

Use

the

chassis

of

voltage.

Electronics

the

that

31

Equipment

DMM

Flow meter (21

Oscilloscope

Force

Mass

Regulated

Pressure

Slotted

Small, slotted, plastic or nonconductive adjusting tools

Allen

wrenches

Required

GSU

Handset

flow

meter

power

gauge

screwdriver

degrees

(capable

supply

and

transducer

1/8"

C, 760 torr, calibrated with Argon gas), Sierra Instruments

of accurately reading 20 seem)

821-S,

or equivalent

The Precalibration Check Procedure includes the

PRECALSTEP 1.0 Check the power supply.

PRECAL

PRECAL

PRECAL STEP4.0 Check

PRECAL STEP5.0 Check

PRECALSTEP 6.0 Check

Perform

PRECAL STEP 1.0

1.1

1.2 Use a

these

Access

Procedures,"for further information).

switchingpower supply voltages at TP1-4 on the Control DisplayBoard.

STEP

2.0 Check

STEP

3.0

stepsinthe

the

Electronics

DVM

withfine pointtest leads or clipleads and make the

Test

Point Voltage

TP-1

Check

order

Check

Chassis

the

the

the

the

the

listed.

the

Module

Ground

tank pressure.

flow

obstruction pressure.

dosage

lowpressure regulator.

power supply. H

rate.

from

following

error.

the

Unit.

steps:

(RefertoSection

following

11,

"Replacement

measurements ofthe

TP-2
TP-3

TP-4

+5.0
+12

Vdc±0.6V

-12

Vdc±0.6V

Vdc±0.25V

1.3Ifthe power supplyvoltages are notcorrect, adjustthem per the Calibration Procedure.

PRECAL

2.1

2.2

2.3 Purge both

2.4 Verifythat

2.5Ifthe

Plug

Press

STEP

2.0

the

Unit

and

electrosurgical

the

Unitpower switch in

gas

lines. (Refer to Section 11, "Replacement Procedures," forfurther information.)

the

Tank 1

known

tank

pressures

Check

and

the

tank

pressure.

generator

the

ON

Tank2 % PRESSURE indicators display 0% (zero %).

are

not correct, adjust

(I)

power

position.

32

cords

intoahospital-grade

Verify

the Unitperforms a self test.

them

per

the

Calibration

grounded

Procedure

receptacle.

in this section.

PRECAL

3.1

3.2

STEP

3.0

Connectanew

control

Connect

Ensure

panel.

the

that

the

Force GSU

Handset

Active

Check

the

Handsettothe

nozzletothe

Adapter

is fully inserted into

flow

mass

rate.

Gas

Line Receptacle

flow

meter.

CAUTION

the

ACCESSORY

and

3-pin

receptacleofthe

connectoronthe

electrosurgical generator and that no metal is exposed. When using the Active Adapter with the

Handset,

3.3

Poweronthe

a.

ensure

Press

the

RF link

electrosurgical

hasnometal

generator

and

the generator rear panel power switch ON

exposed.

place it in

Ready

(I).

mode.

b. After the self test, connect a patient return electrode to the generator.
c. Ensure that all generator power levels are

Keep

the

Handset

Handset

safely.

electrode

away

from

WARNING

personnel.

set

at one.

Press

the generator

Use the Accessory Holster to hold the

READY

Unit

button.

3.4

Press

the green

3.5

Press

and

these

flow

pressure.

If

these settings are NOTwithinthe acceptable range, check all

Verifythat the flow rates for

Setting

1

2

3

4

5

6

7

8

9

10

3.6

Release

the

(+)

button on the Handset to place the

hold

the

Handset

rate settings are

each

Nominal

2.0

3.6

5.1

6.7

8.2

9.8

11.3

12.9

14.4

16.0

CUTorCOAG

CUT or COAG button,

within

the acceptable range, proceed to Step 4.0. Check the obstruction

setting

Flow

button

are

withinthe specified range.

Acceptable

0.4-3.6

2.0-5.2

3.5-6.7

5.1-8.3

6.6-9.8

8.2-11.4

9.7-12.0

11.3-14.5

12.8-16.0

14.4-17.6

to turn off

the

and

gas

Unit

check

flow.

inthe Gas On mode.

the

flow rate at settings 1

flow

rates at settings from 1 through 10.

Range

and

10.

If

3.7Ifany flow rate is not withinthe specified range, adjust the

this

section.

33

flow

rate perthe Calibrate Procedure in

PRECAL

4.1

4.2

STEP

4.0

Press

the

yellow CUT or blue COAG button on the Handset. While

off

the

gas

line to obstruct the

a.

The

OBSTRUCTION

b.

Pressureisreleasedbyan

is

heard

from

the

c.

The

control valve is disabled

d. An audible alarm

released

e.

The

line

depressurizes.

f.

The

electrosurgical

Release

the

pinched

Check

indicator

Electronics

sounds

generator

gas

line.Ifthe

the

obstruction

gas

flow.

illuminates.

automatic

Chassis

andnogas

Verify

pressure.

the

following:

actuation ofaninternal relief valve,

Module.

flows.

for approximately three

deactivates.

Unit

does

not respondasdescribed

seconds

gas

or until

flows to

the

CUT or COAG button is

when

pinched off, adjust the obstruction pressure per the Calibration Procedure inthis section.

the

Handset, pinch

and

the

the

gas

releaseofgas

line is

PRECAL

As a safety feature,

dosage

the flowwith a

5.1 If

5.2 Disconnectthe

5.3

5.4

5.5

5.6 Activatethe

STEP

5.0

the

error condition must occurfor a minimum oftwo

mass

flowmeter. Makesure the

not

connected,

flow

Connecta0-12

Connect

Press

dosage

the

the

error (DOSERROR) condition occurs. (The

Record the

Vdc regulated power supplyto the

+ to pin 1

green

(+) button on

Unit

inCUT orCOAGat settings 1 and 9.

flow

rate when DOSERRORoccurs (approximatelytwo seconds). Return the power

supply voltageto zero.

error condition

and

acceptable range, proceedto

If

the

limits

are not

indicatedinthe

Flow

1

2

3

4

5

within

table

below:

Setting

6

7
8
9

10

Check

the

dosage

error.

Unittriggers an error condition if

Unit

is powered on and the

connect

the

Handset

controlvalve

and

the - to pin 2. Turn on the power supply,

the

Press

the

repeat

the

test

Step

nozzle

from

connectorJ7 onthe

into

the

Handsetto place the Unitin

Unitpower switch to turn the Unitoff

for

the

next setting.Ifthe

6.0. Check the low pressure regulator.

the acceptable range, then activate the

DOSERROR

3.6-6.8

5.2-8.4

6.7-9.9

8.3-11.5

9.8-13.0

11.4-14.6

12.9-16.1

14.5-17.7

16.0-19.2

17.6-20.8

Limits

the

delivered flow

seconds

mass

to alarm. To

flow

Control

endofJ7

Slowly

Unit

that

the

increase power supply voltage untilthe

flashes all 111sand a tone sounds.)

DOSERROR limits

Unit

exceeds

gas

meter.

Display

goestothe

and

Gas

On mode.

and

a specified

check

this feature, monitor

tank valves

Board.

valve.

set

itto zero to begin. *i

on again to

are

inCUTor COAGat each setting

are

clear

within

limit.

open.

the

the

The

5.7

Ifa

dosage

error

does

not

occur

Troubleshooting," for further information.

with

the

specified limits, referto Section 10, "Overall

34

System

PRECAL

6.1

Disconnect the

middle

STEP

6.0

connector).

Check

high

pressure plate cable

the

low

pressure

from

regulator.

the Electronics Chassis

Module

rear panel

(bottom

6.2 Connect tothe highpressure cable to a pressure gauge and

psig.

6.3Ifthe pressure is not

within

this specification, adjustthe

verify

low

pressure per the

6.4 Reconnect the highpressure plate cable to the Electronics Chassis

6.5 Replace the Electronics Chassis

Procedures,"

for further information.)

Module

inthe

Unit.

(Referto Section 11, "Replacement

LOW

PRESSURE

that the pressure is 35.0 ±0.5

Module

REGULATOR

Calibration

rear panel.

Procedure.

This

concludes

the

Precalibration

Figure 7.3 Low Pressure Regulator

Check

Procedure.

35

CALIBRATION

PROCEDURE

Perform the Precalibration Check Procedure before calibratingthe Force GSU

Unit unless it is

perform the appropriate step ofthe Calibration Procedure. This procedure

•

that

the

that

that

the

the

CAL
CAL
CAL

CAL
CAL

•

• that a Force GSU

•

The Calibration Procedure includes the following steps:

necessary.Ifthe

Unitis

disassembledasthe

electrosurgical

Handset

Argon

STEP
STEP
STEP

STEP
STEP

gas

tanks

1.0

Adjust

2.0 Adjust

3.0

Adjust

4.0 Adjust

5.0 Adjust

Unit

does

not

passastepofthe

Precalibration

generatorisconnectedtothe

is connected to the Force GSU

are

installed.

the

power supply.

the

tank

pressure.

the

flow rate.

the

obstruction pressure.

the

low pressure regulator.

Check

Unit

Precalibration

Procedure

System

Unit.

assumes

requires

Do NOTadjust the

Check

Procedure,

the

following:

then

CAL STEP1.0 Adjustthe power supply. I

Use the small slotted adjusting tool to adjust R26 on

TP-2.

all

three

R26

controls all

voltages

three

into

specification.

output voltages,soit maybenecessarytomake

the

switching powersupply module for +5.1 Vdc at

several

adjustmentstoget

Test

Point

TP-1

TP-2
TP-3

TP-4

Aftermaking

CAL

STEP

2.1 Observe

%

display 0% continuously.

2.2 Observe

%

fiOA

0% continuously.

NOTE:

accuratelymeasuring the highpressure

2.3 Tum on the Tank 1 valve. Adjust R56
the tank. Valleylab

2.4 Turn on

the tank. Valleylab

these

adjustments, continue the Precalibration Check Procedure.

2.0

the

Tank 1 % Pressure. Adjust R63 (on

PRESSURE

PRESSURE

ortntint

Use

a fulltankforthis adjustment Theaccuracy of the Unitdigitalreadout depends upon

the

indicator displays 0 (zero) %. Do not adjust R63

the

Tank 2 % Pressure. Adjust R65 (on

indicator

irti

ielw

Tank 2 valve. Adjust R51 (T2 span) to read the appropriate % for

Adjust

sets

sets

Voltage

Ground

+5.0
+12

-12

the

displays

the

the

0%.

Unitwith

Unit

with

from

Vdc±0.25V

Vdc±0.6V

Vdc±0.6V

tank

pressure.

the

Control Display Board)sothat

the

Control Display Board)sothat

Do

not

adjust

R65

beyond

the

tanks.

(T1

span) to read

full

tanks for 100% equals 2000 psig.

full

tanks for 100% equals 2000 psig.

the

appropriate % for

beyond

the

point

the

the

point

whereitbegins

the

to

whereitbeginstodisplay

the

known pressure in

the

known

pressure

in

Aftermaking

these

adjustments, continue the Precalibration Check Procedure.

36

CAL

STEP

3.0

NOTE:

Various

pressureof 760

3.1

Calibrate

a.

Connect

b.

Press

c.

Press

d.

Press

potentiometer located on the rear panel)

flow.

flow rate is in specification.

e.

Press

f. Adjust

meterindicates 2.0 ± 0.2 SLPM of flow.

seconds

g.

Press

h.

Verify

interactiveand steps 3.1b-3.1g may need to be repeated several times

are

attained.

Adjust

flow

meter

manufacturers

torratsea

the

initial

the

the

GAS

levelas a

flow

Handset

FLOW

rate.

the green (+) button on the Handset to place the

and

hold the Handset CUTor COAG button. Adjust

Allow

the

flowto stabilize for approximately 10

the

GAS

FLOW

the

ZERO (tower adjustment potentiometer located on

the

tube

into

UP

buttontoset

DOWN

flow rate.

use

standard.

the

mass

buttontoset

different

flow

the

until

Allow

standards.

meter

flow

rateto10.

Valleylab

inlet.

Unit

the

the

mass

flow

seconds

the

flow

rateto1.

the flowto stabilize for approximately 10

between adjustments untilthe flow rate iswithin specification.

the

GAS FLOW UP button to

the

flow

rate is 16.0 ± 0.2 SLPMfor

set

the

flow rate to 10.

flow.

The SPAN and ZERO adjustments are

uses21 degrees Canda

inthe

Gas

On mode.

SPAN (upper adjustment

meter indicates 16.0 ± 0.2 SLPMof

between adjustments untilthe

the

rear

panel) until

until

both

the

flow

mass

settings

flow

3.2 Connect a

3.3

Press

the GAS FLOW

Press

3.4

the green (+) button on the Handset to place the

3.5 Pressthe

0.25 Vdc.

panel)asfollows:

a.

If

the voltage is too high, turn the screw counterclockwise.Ifthe voltage is too

screw clockwise. Press and holdthe yellowCUTor blue COAGbutton on the Handset while

making this adjustment.

Release the CUTor

stops.

c.

Pressthe

± 0.25

attain this specification. Release the CUTor COAGbuttonto stop

DMM

across the J7 terminals. Pin 1 ofJ7 is positive, and pin2 of J7 is negative.

DOWN

yellow

CUTor blue COAGbutton on the Handset.

If

the voltage is outside ofthis range, adjust the control valve orificescrew (on the rear

yellow

CUTor blue

COAG

button to

buttonand

COAG

set

the

gas

flowto 1.

Unit

allow

the gas

flow

buttonon the Handset.

inthe

Gas

On mode.

Verify

the voltage across J7 is 6.0 ±

to cease. Repeat

Verify

the voltage acrossJ7 is 6.0

until

low,

the gas

turn the

Vdc.Ifthe voltage is outside ofthis range, repeat steps 3.5a and 3.5b as necessary to

gas

flow.

<s>

•

o

0

30C

A

9

9

0

"'ft'

- CONTROL VALVE

ORIFICE

O

SCREW

flow

o

0

Figure

s

f

7.4

Control Valve Orifice

37

Screw

1

Location

O

•

3.6

Check

accurately reading 20 seem, measure the leakage rate.Ifa mass
graduated cylinder

thegas leakage rate

filled

withwater and invertedintoa largercontainer of water. Insertthe free end

(20

ccper

minute,

maximum).

Using

a mass

flow

flow

metercapableof

meter is not available,

ofthe Handset tubing intothe open (submersed) end ofthe cylinder and measure the time to

accumulate 20 cc of

gas.

An acceptable time is

one

minute.

use

a

Aftermaking

CAL

STEP

EXPLOSION HAZARD: Do NOT

Grade

4.1 Connect a

4.2

Set

4.0

R36

these

adjustments, continue with

Adjust

(99.998%

DMM

fully

pure,orbetter)

across

TP-1

counterclockwise. Observe

the

obstruction

use

Argon

(ground)

the

Precalibration Check Procedure.

pressure.

WARNING

oxygen

and

for

any

adjustments.

gas

for all

adjustments.

TP-6.

TP-6

(DLPRES)with an oscilloscope

Always

use

High Purity

set

to 50 mV div.

Adjustpotentiometer R67 untilthe DCvoltage is zero. Do notover-rotate the pot beyond the point

whereitzeroes

4.3 Apply 27 ± 1 psig from a regulated Argon

transducer (U19)on

damaging

4.4 Adjustpotentiometer R36

sounds.

± 1 psig.

the

transducer.

gas

supply to the luer

the

Control Display Board. Do not apply pressure greater

until

the

OBSTRUCTION

indicatorilluminates and an audible alarm

fitting

going to the pressure

than

30 psig to avoid

Aftermakingthis adjustment, continue withthe Precalibration Check Procedure.

CAL

STEP

5.0

5.1 Loosen the

locking

Adjust

the

nut on top ofthe

low

pressure

Low

Pressure Regulator, and

regulator.

use

output pressure to 35.0 ± 0.5 psig.

5.2 Retighten the locking nut on top of the lowpressure regulator.

5.3 Couplethe hose to the eibow. Connect to a pressure gauge and

0.5 psig.

verify

Aftermaking this adjustment, continue the Precalibration Check Procedure.

an alien wrench to adjust the

that the pressure is 35.0 ±

38

SECTION

8

OVERALL

Referto the ForceGSU Instruction

determine whatthe

manual to help locate

Information

SYSTEM

Unit

and

TROUBLESHOOTING

Manual

is not

doing

correctly.

correct a malfunction.

to learn howa properly operating

Refer

tothischapterandthe

about troubleshooting and repairing majorcomponents inthe Electronics Chassis

inSection 9, and the High Pressure Regulator Moduleis in Section 10.

If

youare not

Operation," to better understand the

for

the

proper disassemblyof

Electrical

the

parts.

contact

ModuleorTP-1asa

This Unitcontains electrostatic sensitive components. When repairing

control workstation.

Handle

electrostatic sensitive

familiar

Unitisdisassembled

The

with

the

with

the

information

the

Unit.

Shock

circuit boards bytheir nonconductive edges. Use an antistatic containerfor transport of

Hazard: Do NOT

lower

heatsinkonthe

It;doNOT

Wear

components

and

use

measurement

a grounding

inthese troubleshooting sections, referto Section5, Theory of

Unit

functions.

touch

energized.

power

it for

ground.

and

ground

strap

circuit boards.

Referto the Section 11,"ReplacementProcedures,"

WARNING

any

exposed

Disconnect

supply

Use

the

reference.

CAUTION

when handling electrostatic sensitive components.

wiringorconductive

the

power

Is at an

elevated

chassisofthe

Unit

should

following

cord

chaptersinthis

surfaces

before

replacing

voltage;doNOT

Electronics

the

Unit,work at a static

Chassis

function

Module

come

and to

is

while

in

the

Let

• Perform a visual inspection of

• Ifonly a single function is not working, concentrate on

•Ifseveral symptoms

• Look for

symptoms

solution to

or burnt (discolored)

and

the

test

are

the

problem is not obvious,

any

obvious conditions

components.

resultsbeyour guide.

the

Unitfirst.

present, locate a circuitthat is common to all

check

the

power supply circuits first.

that

maybethe

causeofthe

the

circuit

that

controls that function.

the

affected functions.Ifthe

malfunction: loose connections, broken

39

/

FORCE

GSU

UNIT

I

OVERALL

V

TROUBLESHOOTING

\

J

J

SEE

ELECTRONICS

MODULE

TROUBLESHOOTING

SECTION

ELECTRONIC

CHASSIS

9

YES

PNEUMATIC

SEE

HIGH

PRESSURE

REGULATOR

TROUBLESHOOTING

SECTION

MODULE

10

Figure

8.1 ForceGSU

Unit

OverallTroubleshooting

40

SECTION

9

TROUBLESHOOTING

This

section

describes

howtotroubleshoot

THE

ELECTRONICS

the

Electronics

Chassis

CHASSIS

Module.

MODULE

Refer to the Force GSU Instruction Manual to learn how a properly operating Unitshould function and to

determine what the

help locate

If

you

and

are

not familiar with

Unit

is not doing correctly. Refer to this chapter and the

correct a malfunction.

the

information in

following

these

troubleshooting sections, refer to Section 5, "Theory of

chapters inthis manual to

Operation," to better understand the Unitfunctions. Refer to the Section 11, "Replacement Procedures," for the

proper

disassemblyofthe

Electrical

the

parts.

contact

ModuleorTP-1asa

Unit is

The

with

Shock

Hazard: Do NOT

disassembled

lower

heatsinkonthe

it;doNOT

Unit.

and

use

it for

measurement

WARNING

touch

any

exposed

energized. Disconnect

power

ground.

supply

ground

CAUTION

is at an

Use

the

reference.

chassisofthe

wiring or

the

power cord

elevated

conductive

before

surfaces

replacing

voltage; do NOT

Electronics

Chassis

while

come

in

This Unitcontains 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 fortransport of

electrostatic sensitive components and circuit boards.

41

COtaPUT

all

BBBOR COM J

IIO¥! ^

i*a

1

Bapalz Or

Raplaca

Coatrol/Dlaplay

Board

Baoallbtata

Syataa

taa

flaotloa

l'l

IHDXCAtl

actual

d0ba8i

bxcbxds

dbbibxd

bi

3.2

fL»

Dlacoaaaet

flow

latar

At

J»

Baeoaaaet

Olaeoaaaet

UaaAtBaar

7

Natar

Kodala

Aad

Bos

View

eaa

Of

Maaaara

Voltaga At J7

Via

1

(Coattol

Valra)

rata

Oilfaca

Adlnitlag

Scrav

Ob

Coattol

7al»a

Cloekvlaa

Baplaea

Coattol

Valra

Oa

Baar

Baaal

Of

Hodala

Bapalr Or

Baplaea

Coatiol/Dltplay

Board

Bos

Baeoaaaet

UaaAtBaar

Of

Hodala

Saa

Box

Figure 9.1 Display

Adjsat Coattol

Valva

Shows

42

lor

C.OV

At2SLBB

Saa

Sactloa

7

All 1's Error

Code

DISPLAY

ALL

BBBOB

2'S

XHCOBBSCf

BSBOLt

AM A10D

cemuxoi

Verify

Syataa

Coaaaotloaa

sacata

Vrooaadlaf

880W8

2* S

CODS

XVDXCAIB

7X01

that

Oroaad

Bafora

All

Ara

Irror

Oparatloa

Xadleataa

lateralttaat

Problea

Adjaat

Baplaea

Bopply Aa

Veeeaaary

Barlag

Pover

Or

If

Problea

Perelata

Bapalr

Or

Baplaea

Coatrol/Dleplay

Board

Brobabla

Xa 05 Bapalr Or

Baplaea

Coatrol/Dleplay

Board

Figure

Caaaa

9.2

Display

Probable

Caaaa

Xa Of Bapalr Or

Baplaea

Coatrol/Dleplay

Board

Brobabla

Caaaa

Xa 07 Bapalr Or

Baplaea

Coatrol/Olaplay

Board

Shows

All

2's

Error

Code

43

(DISPLAY

ALL

IBBOB

Softvaze

Baplace Dl Oa

Coatrol/Dlaplay

Board

::

3'S

CODB

SSOOS

Btror

\

1

/

Figure 9.3 Display Shows All3's

44

Error

Code

1

SlSIXIf

ST8TIB
18AIOKCIXOV

OP

BAICEDOS

CXBCDXI

BB8BIS

::

BB8BT

111

I

02

H0«-BBSSt
kobial

Biapoaas

to

povxb

DBOPOOta,

conxcta,

Dlaeoaaaet

Coatrol/Dleplay

Board

Lias

DX8-

itc

The

Pollevlag

teata

Shoald

Be

Perforaad

If

Problaa

Paralata

Proa

Power Sapply

Aad

Beaoaaare

the

the

18

Software

or

•leroprocaaaor
Hot

Baaattlag

Watchdog Ilaer

Bapalr or

Baplaea

Coatrol/Dlaplay

Board

Hardware

Balfaaetloa

Baplaea 01

Bapalr

Or

Baplaee Power

Sapply

Figure

9.4

System

45

Resets

fBODISPLAY

J

Connect

Cotd

*

Secure

Bepalr Or

Beplaee

Contiol/Dliplay

Board

Power

Hiring

Replace Fuaa

Cheek
Filter

Internal

External

Power

Line

And

And

Corda

Beplaee Power

twitch

Dlieonneet

Control/Display

Control/Diaplay

On

Board

Repair Or

Replace

Board

J5

Replace Power

Supply

Dlsconneet

Control/Display

ReconnectJSOn

Control/Diaplay

Board

Board

Rateat

JS

And

Rgure 9.5 No Display

46

Preaa

LIBI

Oa

Replace

Baadaat

Bapaat

Proat

Paael

P0B01

Battea

teat

Aad

Praaa

Battoa

Saadaet

Coaflra

OB

Problea

•oa-Faaetloaal

Baadaet

0A8

Bode

Oa

Aad

OAS

OB

Was

Figure

BO

0A8

(BODOLB

9.6

PLOW

BOX)

No

Gas

Flow from

47

Handset

Correct

Aad

Bepeat teat

Preae

Select

to

Switch

laaka

teak

Battoa

Beplaee Oaa

Or

Both

faake

Check

Xeyboard Aad

Coaaaetor

Paeaaatlca

Beplaee

Baadaet

Bad

task

Select

Valve

Or

Coaaeetloa

Dleeoaaeet

laadaat

Aad

Praaa

POBflB

LXBB

Battoa

Proa

Bodala

Depreae

Coaaaetor

Paael

Baar

Oa

Oaa

Box

Proat

Jl

OB

Dleeoaaeet

Boee

Of

Aad

Kaaeare

Veltagea At

Coaaaetor

Valwe

Cable/Coaaeotor

•aaaara

Voltagae At

Bad

J3

J3

Of

HO

0A8

PLOW

KODDLB

BOX

Bepals Or

Beplaee

Cabla/Ceaaeetor

JS

•0

BODOLB

Yee

<

Problea

Xa

Both

OAS

PLOW

BOB

Figure 9.7 No

Praei

legal

Gas

ralvaa

ere

ator

Purge

Beplaee Blgh

Preaaare

Bagalater

Bodala

See

Seetlea

11

48

Praia

POBOB

LIBS

Battoa

Paaal

At

Ixamine

Por

eaa

J7

Box

Llaea

Oa

Aad

Proat

Beaeara Voltage

Modale

Obatrecloae

la

Seeare

Wiring

Aad

Coaaeetleaa

Coaaeet

All

Oaa

Llaaa

Problealala

Coatrol/Dleplay

Beard

Baplaea

Coatrol
Oa

Bear

Of

Bodale

Figure 9.8 No

Bapalr Aad

Bateet

Valve
Paaal

Box

Gas

Flow (Electronics Module)

49

Coataet

Valleylab Pos

Partner

Aaalataaca

Calibrate

ayetea

See

Sactioa

Problea

Incorrect

feedback

Plow

CABBOC

ACRIBVB

SLPM

Beter

PLOW

Xe

Proa

If

7

Secare

Cable

Aad

Bateet

Correct

Or

Repair Leake

Probable

Caaaa

Xa

Boa-Paactloaal

Plow

Beter

Figure 9.9 Flow Rate Errors

50

(CAKBOt

0 SLPM PLOW I

•OtB-IBIS

CRABS

TSAt

PLOW

CALIXEAtlOS

BXBB

ACRXBVB \

PBBSOHB8

RATI

BAS

DOBS

•eaeare

Voltage At J7

Pla

1

(Coatrol

Valve)

Bapalr

Or

Baplaea

Coatrol/Dleplay

Board

Recalibrate

Syatea

See

Seetloa

fara

Orifice

Adjsetlag

Screw

Oa

Coatrol

Valve

Clockwlae

Beplaee

Coatrol

Valve

Aeeesbly

Adject

Coatrol

valve

Pot

f.OV

7

At2SLBB

See

Seetloa

7

Figure

9.10

Cannot

Achieve

51

0 SPLM Flow

(CAXBOt

If

KOtB•(IIS

CBABf

IBAC
CALXBBATXOB

ACSIXVX \

SLPB

A

PBBSUBBS

PLOW

BBBV

DOBB

PLOW

BAtB

I

IAS

Repair

Or

Beplaee

Coatrol/Dleplay

Board

Repair Leak

Aad

Beteat

Coaflra/Ad]aat

Coatrol

Valve

For

f.OV

At2SLPB

See

Seetloa

Beaeara Voltage

AtJ7Pla

(Coatrol Valve)

At

Coatrol

Setting 10

Look Caretally

Por

Oaa

Leake

Bctweea

Plow

Beter

Aad

Laer

fitting

Beaeare

Preeaare

of

Impact

Xa

lotoraal
filter

Bodale

See

Low

Oaa

Beplaee

Seetloa

Llaee

Bos

At

Bad

Llae

Por

Xa

Beplaee XIgh

Preeeare

Regulator

Bodale

See

Section

Correct

Beteet

11

Aad

Coaaaetor

7

1

Praeeare

Reatrletloaa

Figure 9.11 CannotAchieve 16SPLM Flow

52

SECTION

10

TROUBLESHOOTING

This

section

Refer to

describes

the

Force GSU Instruction Manual to learn how a properly operating Unit should function

howtotroubleshoot

THE

HIGH

the

PRESSURE

High

Pressure

REGULATOR

Regulator

Module.

MODULE

and

to

determine what the Unit is not doing correctly. Refer to this chapter and the following chapters in this manual to

help

locate

and

correct

Ifyou

are

not familiar with

Operation," to

proper

disassemblyofthe

Electrical
the

parts.

contact

ModuleorTP-1

This
control workstation.

Handle

better

Shock

Unitisdisassembled

The

with it;doNOT

Unit

contains

the

circuit

electrostatic sensitive

wmmm

a malfunction.

the

understand

Unit.

Hazard: Do NOT

lower

heatsinkonthe

asameasurement

electrostatic

Wearagrounding

boardsbytheir

components

information in

the

Unitfunctions. Refer to

these

touch

and

energized.

power

use

it for

ground.

ground

sensitive

nonconductive

components.

strap

and

circuit boards.

troubleshooting sections, refer to Section 5, "Theory of

the

WARNING

any

exposed

Disconnect

supply

Use

reference.

CAUTION

when

handling

edges.

Section 11,

wiring or

the

is at an

the

chassisofthe

When

electrostatic

Useanantistatic

power

elevated

repairing

"Replacement

conductive

cord

before

surfaces

replacing

voltage;doNOT

Electronics

the

Unit, work at a

sensitive

container

components.

for

Procedures," for

while

come

Chassis

static

transport

the

in

of

mm

57

Oacoaple Qalck

Coaaeet

oa

Blactroalce

Chaaele

Bodale

Bear

Paaal

81gb Preeaare

Bqalpaeat

Leak

Chart

Slectroalci

Chaaele

Leak

Bleetroslce

Chaaele

Leak

Bodale

Chart

Bodale

Chart

Figure 10.1

58

System

Gas

Leak

I

BLBCTB0BIC8

V K0D0LB

Blectroalca

Bodale

Opaa Bodale Bos lop

See

Attach

Connect

Seetloa

Bear

CBAS8I8

Qalck

to

Chaaele

Paaal

11

Check Aad tlghtea

All Plttlaga Aad

Claapa After flow

Coatrol

Valve

Bepleee Leaking

Cospoaaat Or

Contact Valleylab

Service

Por

Aeelataaca

Check

All

Plow

Aad

Plttlaga

Coatrol

tlghtea

Op to

Valve

Figure 10.2

Gas

Leak- Electronics

59

Chassis

Module

tlghtea

Oaa

tank Plttlaga

(0A8

SXOI

LXAB

PBBS80BB

XQOIPBBBt

\

j

J

Check

Oaa

tank Pitting

Aad

O-Blag

Beplaeed

Daaaged

Coapoaeat

Oaa

taak

Beplaee Blgh

Preeeare

loae

Aeeeably

tlghtea Blgh

Preeeare

Beee

O-Rlag

Preeeare

to

at

llgh Preeeare

Begalator Bodale

Or

Beplaee

llgh

Bodale or Replace

llgh Preeeare

Begalator Bodale

Check And tighten

Plttlaga aad Claapa

oa llgh

Preeeare

Regulator Bodale

Replace Blgh

Preeeare

Begalator

Bodale

Figure

10.3 Gas

Leak-High

60

Pressure Equipment

SECTION

11

REPLACEMENT

PROCEDURES

This section describes how to replace most major subassemblies in the Force GSU

leakage

current

Electric

Do

NOT

Electronics

Take

hand

Electric

Unitisdisassembled

The

Unit

test

and

Shock

comeincontact

Hazard:

Chassis

appropriate

rule,"

etc.)

Shock

Hazard: Do NOT

contains

when

electrostatic sensitive

control workstation.

Handle
of

the

circuit

electrostatic

boardsbytheir

sensitive

ground

precautions

resistance

The

lower

with

It. Do NOT

ModuleorTP-1asa

(suchasuseofisolated

taking

measurements

touch

and

energized.

Wear

a grounding

nonconductive

components

tests

(Section 6) before returning

WARNING

heatsinkonthe

use

it for

measurement

or

any

exposed

CAUTION

components.

strap

when

handling electrostatic sensitive

edges.

and

circuit

boards.

power

ground.

ground

tools

supply

Use

and

troubleshooting

wiringorconductive

When

repairing

Useanantistatic

the

Unitto clinical

is atanelevated

the

chassis

reference.

equipment;

the

Unit.

the

Unit, work at a static

container

Unit.

Perform the

of

the

useofthe

surface

components.

for

use.

voltage.

while

the

transport

"one

RECOMMENDED

You will

need

the

Description

Slotted

Hex

Nut

DriverorCrescent

REPLACEMENT

following

Screwdriver

Wrench

—

equipment

Wrench

EQUIPMENT

to perform

the

repairs

Specifications

1

/8"

and1/4"

7/64"

3/8"

described

in this section.

61

ELECTRONICS

CHASSIS

MODULE

REPLACEMENT

This procedure describes how to remove the Electronics Chassis Module from the Unitfor further

disassembly

access

or troubleshooting,

the

module

for

some

and

repairs

how to install

and

checks.

the

WARNING

module into

the

Unit. Italso

describes

how to

Electric

Unitisdisassembled

The

Unit

Shock

contains

Hazard: Do NOT

and

touch

energized.

any

CAUTION

exposed

electrostatic sensitive components.

wiring or

mmmmmmmm^^^^MMMmm^mmmmM

When

conductive

repairing

the

Unit, work at a static

surface

control workstation. Wear a grounding strap when handling electrostatic sensitive components.

Handle the circuit boards by their nonconductive

of electrostatic sensitive

Equipment

Slotted

Removing

To

access

1.

Verify

2. Unplug

3. Lock

Required

Screwdriver

the

Electronics

the

Electronics

the

Unit

the

the

cart

Unit power cordfrom

1/8"

power switch is inthe OFF

casters.

components

Chassis

Chassis

Open

the

Module

Module, perform

the

Unit

side

and

circuit boards.

wall receptacle.

door.

(O)

edges.

steps

position.

Use an antistatic container for transport

1-5.

while

the

4. Loosen (turn 1/4 counterclockwise) the four wing screws located on the Electronics
rear panel. Gently wiggle the screws to unseat them.

5. Carefully slide the Electronics Chassis Module out from the front of the Unit

table top to work on it. Do not pull itout so far that it strains

6. Disconnect

• High

• High

•

•

• Argon

7.

Remove

ESU

Power

the

the

following from

Pressure
Pressure

Extension

Cable

Gas

Hose.

module

the

module

Sensor
Valve

Cable

(use

from

Cable

Cable

a slotted screwdriver to remove

the

cart.

rear

panel:

the

the

strain relief)

cables

and

and

rest it on the Unitor

gas

line.

Chassis

Module

62

Installing

the

Electronics

Chassis

Module

WARNING

Electrical

the

parts. The lower heatsink on

contact with it;doNOT

ModuleorTP-1asa

1.

Place

2.

Reconnect

• High

• High

•

•

• Argon

3. Ensure

Unit is

the

ESU

Power

the

Shock

Hazard: Do NOT

disassembled

and

use

measurement

Electronics

the

Pressure

Pressure

Extension

Cable

Gas

Chassis

following to

Sensor

Valve Cable

Cable

(use

a slotted screwdriver to

Hose

the

Cable

Unitfunctions properly.

touch

energized. Disconnect

the

power supply is at an elevated voltage; do NOTcome

it for ground. Use

Moduleinthe

module

ground

rear

panel:

any

exposed

reference.

cart.

attach

wiring or

the

the

chassisofthe

the strain relief)

a. Plug the Unit power cord into a hospital-grade grounded receptacle.
b.

Press

the

power switch in

c.

The

Unitconducts a self test. Check

the

ON

(I)

position.

the

following:

* Bothtank indicators illuminate for approximately0.5 seconds.

*

All

other LEDindicators illuminateforthe remainder ofthe self test (approximately 10

seconds).

d. After

the

self

test,

make

sure

that:

* Tank 1 is selected. (IfTank 1 is empty or closed, Tank 2 is selected.)

* A single

*

GAS

tone

sounds.

FLOWissetto1

and

the

Unitisin

the

Gas

Off

* The % PRESSURE indicator displays the appropriate pressure.

conductive

power cord

Electronics

mode.

before

surfaces

replacing

Chassis

while

In

4.

Press

the

Unitpower switch in

the

OFF (O) position.

5. Unplugthe Unit powercord from the wall receptacle.

6. Carefully slide

NOTE:

When

7. Pressthe module towards the rear ofthe

the

module into

inserting the module,

the

orient

front of

the

the

Unit.

wing

screws

Unit.

vertically.

Fasten the module into place by tightening (1/4 turn

clockwise) the four wing screws on the module rear panel untilsnug.

8.

Close

the

Unit

side

door.

63

HIGH

PRESSURE

REGULATOR

MODULE

REPLACEMENT

Thisprocedure describes howto removethe

disassembly or troubleshooting,

Electric

Shock

Hazard: Do NOT

Unitisdisassembled

The Unitcontains electrostatic sensitive components. When repairing the

and

and

how to installthe module into the Unit.

energized.

touch

High

Pressure Regulator

WARNING

any

exposed

CAUTION

wiring or

Module

from

conductive

Unit,

the

Unit

surface

work at a static

control workstation. Weara grounding strapwhen handling electrostatic sensitive components.

Handle

of electrostatic sensitive

Equipment

Hex

Wrench

Nut

DriverorCrescent

Removing

1. Purge

the

circuit

Required

7/64"

the

High

the

Unitof Argon

boards

Wrench

Pressure

by their nonconductive

components

3/8"

Regulator

gas

before disconnecting

and

circuit

Module

edges.

boards.

the

gas

Use an antistatic containerfor transport

lines. (Referto "Purging

the

procedure withinthis section forfurther information).

forfurther

while

the

Gas

Lines"

Press

the

2.

Unitpower switch in

the

OFF (O) position.

3. Unplug the Unitpower cord from the wall receptacle.

4. Disconnect

a. Follow

the

gas

tank

lines from

the

appropriate safety precautionsfor handling of high

the

Unit.

safety cap(s) before proceeding.

b. Lock the cart casters. Open
c. A small amount of Argon may

high

pressure

the

large knob. Use a wrench to

gas

d. Loosen but do not remove

5.

e. Attach

Remove

a.

Open

the

the

the

safety

Unit

storage

storage

b. Remove the plastic

c. Using a hex wrench,

d.

Remove
clears

Pressure

6. Disconnect

the

storage

the

screwsatthe

Regulator Module is on bottom of

the

following from

line, hold the

captothe

compartment.

compartment.

caps

tum

compartment by grasping

the

side door.

escape

the

retaining strap.

top of

during this procedure. To disconnect

gas

line coupling stationary

assist

loosening this connection.

the

tank.

from the screws in the bottom corners of

the

two hex

bottom. Slide

the

High

screws

the

Pressure

clockwise

compartment bottomforward

the

Regulator Module:

and

(screws

the

handle

cart. Removing

and

pressure

loosen

the

inward).

lifting

the

the

Module

gas

tanks. Obtain tank

the

tankfrom

the

coupling by turning

compartment.

compartment
and

lower it.

until it

The

the

High

•

Tank1and

•

Tank1and

•

Tank1and

Tank

2 High

Tank2select

Tank2pressure

Pressure

cables

transducer

Hoses

cables

64

Some

7.

residual

Using

Save

a nut

the

gas

may

driver,

hardware.

escape.

loosenthe fourhex nutsand lockwashers locatedon the

8. Carefullyremove the plate and hose assembly fromthe bottomof the cart.

high

pressure plate.

Installing

1.

Place

the

the

High

High

Pressure

Pressure

Regulator

Module

Regulator Module in

the

cart.

2. Using a nut driver, attach the module to the cart using the four hex nuts and lockwashers.

3.

Reconnect

•

•

• Tank 1

4.

Connect

a. Remove

b.

c.
d. Align

e.

5. Plug

6.

Press

7. After

the

following from

Tank1and

Tank1and

and

the

gas

the

NOT remove

Orient

the

tank

Secure

the

Close

the

the

the tank with

the

gas

large knob

the

side

Unit

power

the

power switch in

Unit self

the

High

Tank

2 High

Tank2select

Pressure

cables

Pressure

Hoses

Regulator Module:

Tank 2 pressure transducercables.

tank

lines to

gas

tank

the

gas

valve

line coupling

hand

door.

cord

test,

open

the

Unit.

safety

cap

tank

identification tag(s).

outlet

toward

the

retaining strap.

the

tank valve outlet. Carefully

tight.

into a

hospital-grade

the

ON

(I)

both Argon

and

place

the

backofthe

position.

gas

itin

grounded

tanks.

the

gas

cart.

cap

holder in

connect

receptacle.

the

baseofthe

the

coupling by tightening

cart. Do

8. Listen for

gas

Troubleshooting

9. If

there

arenogas

a. Catch

b.

Lift

and

c. Lower

the

the

d. Using a hex wrench,

storage

e.

Place

the

leaks. If

the

there

High

is a

gas

Pressure

leaks, replace

storage

tilt

the

storage

compartmenttosecure

plastic

compartmentflange under

lower part

the

compartment over

back

out

caps

over

the

leak, check all

the

fittings

and

refer to Section 10,

Regulator Module,"for further information.

the

storage

storage

the

the

screws

compartment in

the

compartment into

the

screws

two hex

screwsinthe

compartment in

and

close

the

Unit.

top frame of

the

the

Unitopening.

protruding from

side

frames

the

Unit.

the

storage

compartment.

the

Unitopening.

Unit

side

from

the

frames.

inside of

the

65

PURGING

THE

GAS

LINES

Thisprocedure describes howto purge both

Argon

gas lines.

disconnecting them.

1. Ensure that both Argon

2.

Turn

off

both

tanks.

3. Press the power switch inthe ON

Tankl.

4.

Press

the

GAS

FLOW

5.

Press

the

PURGE

gas

tanks have a pressure greaterthan 5%.

(I)

UP

buttontoset

LINE

button to purge Tank 1

position. Afterthe self test, the

the

flow

rateto10.

gas

line.

6. Open Tank 2. The pressure should rise above 5% and the

off

Tank

2.

7. WithTank 2 selected,

8.

The

Tank 1

CONTROL

This procedure

and

DISPLAY

describes

press

the PURGE

LINE

button to purge the Tank 2

Tank 2 % PRESSURE indicators should display 0%.

BOARD

how to remove

REPLACEMENT

and

installthe Control Display Board.

calibrated after replacing the Control Display Board.

Always

purge both gas linesbefore

Unit

automatically selects

Unit

automatically selects Tank 2. Tum

gas

linecompletely.

The

Unitmust

be

WARNING

Electric

Unitisdisassembled

The

Shock

Hazard: Do NOT

and

energized.

touch

any

exposed

CAUTION

wiringorconductive

Unitcontains electrostatic sensitive components. When repairing

surface

the

Unit,work at a static

control workstation. Wear a grounding strap when handling electrostatic sensitive components.

Handle the circuitboards bytheir nonconductive edges. Use an antistatic container fortransport

of electrostaticsensitive components and circuitboards.

Equipment

Slotted

Nut

DriverorCrescent

Removing

1.

Verify

2. Unplug

3. Remove

Required

Screwdriver

the

1/8"

Control

Wrench

Display

1/4"

Board

the Unitpower switch is inthe OFF (O) position.

the

Unitpower cord from the wall receptacle.

the

Electronics

Chassis

Module from

the

Unit. (Refer to

the

"Electronics

Chassis

Replacement" procedure withinthis section for further information.)

while

Module

the

66

4.

Locate

the

Control

Display

Board.

Disconnect

the

following

cables

from

the

board:

Keyboard

JackstripCable (3 pinconnector)

Tank

Internal

DC
Pressure Sensor Cable (8pinconnector)

Flow

Cable(7 pinconnector)

Valve

PowerCable (5 pinconnector)

Interface

Cable

from(4pin

Power Cable (6pinconnector)

Control

Valve

Wires(2 pinconnector)

from

J1

from

J2

connector)

from

J5

from

from

from

J3

from

J6

J7

J4

ReliefValve Wires (3 pinconnector) from J8

Flow

MeterCable (4 pinconnector) fromJ9

5.

Remove

hardware.

the six

nuts,

two

screws,and

lockwashers

from

the

Control

Display

Board.

Savethe

6. Carefullyremove the Control DisplayBoard fromthe module.

Installing

the

Control Display Board

1. Carefullyplace the Control DisplayBoard inthe module.

2. Secure the Control DisplayBoard to the module using six nuts, two screws, and lockwashers.

3. Reconnect

the

following

Keyboard Cable (7 pin connector) to J1
Jackstrip Cable (3 pin connector) to

Tank Valve Power Cable (5 pin connector) to

Internal Interface Cable from (4 pin connector) to
DC Power Cable (6 pin connector) to

Pressure

Flow Control Valve Wires (2 pin connector) to

Relief Valve Wires (3 pin connector) to

Flow Meter Cable (4 pin connector) to

Sensor

cables

Cable

to the Control DisplayBoard:

(8 pin connector) to

J2

J3

J5

J6

J8

J9

J4

J7

NOTE:

4.

Place

5.

Reconnect

6.

Ensure

Make

sure the

the

Electronics

High

Pressure

High Pressure Valve Cable

ESU

Extension

Power

Argon

the

a. Plug the

b.

Press

c.

The

Unit

Keyboard

the

following to

Sensor

Cable

Cable

Gas

Hose.

Unit functions properly.

Unit

power cord into a hospital-grade grounded receptacle.

the

power switch in

conducts

Cabledoes notget

Chassis

the

Cable

a self

Moduleinthe

module

the

test.

rear

ON

(I)

Check

trapped

cart.

panel:

position.

the

following:

behindthe

* Bothtank indicators illuminate for approximately0.5 seconds.

*

All

other LEDindicators illuminatefor the remainder

seconds).

67

the

Control

self

test

Display

(approximately 10

Board.

d. After

the

self

test,

make

sure

that:

* Tank 1 is selected.

* A single tone sounds.

*

GAS

FLOWissetto1

* The % PRESSURE indicator displays the appropriate pressure.

(If

Tank 1 is emptyor closed, Tank 2 is selected.)

and

the

Unit is in

the

Gas

Off

mode.

Open both Argon

7.

Press

the

8.

Unplug the Unit power cord from the wall receptacle.

9.

10. Calibrate

11. Install

Replacement" procedure withinthis section forfurther information.)

POWER

This procedure

Electric

Unit Is

The

control

Handle

of electrostatic sensitivecomponents and circuit boards.

Unit

the

the

Electronics

SUPPLY

describes

Shock

disassembled

Unit

contains electrostaticsensitivecomponents. When repairing the

workstation.

the

gas

tanks, and check forleaks.

power switch inthe OFF

Unit. (Referto

REPLACEMENT

how to remove

Hazard: Do NOT

Weara

circuit

boardsbytheir

Section

Chassis

and

energized.

grounding

(0)

position.

7, "Maintenance

Module in the Unit. (Referto the "Electronics

and

replace the power supply.

WARNING

touch

any

exposed

CAUTION

strapwhen

nonconductive

Procedures,"

handling

edges.

for further information.)

Chassis

wiring or

conductive

Unit,

surface

workat a static

electrostatic sensitivecomponents.

Useanantistatic

container

for

Module

while

transport

the

Equipment

Slotted

DVM

Removing

1.

Verify

2.

Unplug

Remove
Replacement" procedure

Required

Screwdriver

the

Power

the

Unit

the

Unit

the

1/8"

Supply

power

switch

powercord

Electronics

is inthe OFF

from

Chassis

within

(O)

the

wall

receptacle.

Module

from

thissectionfor

position.

the

Unit.

further

(Referto the "Electronics Chassis

information.)

Usinga slotted screwdriver, remove the four screws and lockwashers from the module rear cover.

Carefully

the

Locate

• Power Supply Cable from J1

• Power Supply Ground Cable from P1

•

module.

the

DC

Power

remove

power

Cable

the

rear

supply.

from

cover.Donot

Disconnect

J2.

the

pullitoutsofar

following

cables

68

thatitstrains

from

the

power

the

cables

supply:

andgas

Module

line

inside

6.

Using

a slotted

screwdriver,

remove

supply. Save the hardware and cable clamps.

POWER

SWITCH

the three

metal

screwsand one

DC

CABLE

POWER

nylon

screw

CABLE

from

the

CLAMP

ACTOPOWER

SWITCH.

power

ACTO

SUPPLY

POWER

CABLE
&

NYLON

CLAMP

SCREW

POWER

FUSE

SUPPLY

Figure 11.1 PowerSupply Replacement

7. Remove

Installing

the

the

power

Power

supply from

Supply

the

module.

1. Orient the power supply so that fuse is at the bottomof the module, and the J2 connector is at the

top ofthe module. Using a slotted screwdriver,attach the power supplyto the ElectronicsChassis

Moduleusing three metal screws and one nylonscrewasshown in Figure 11.1.

screw

and

cable clamps placementbefore attaching them to the module.

Verify

the nylon

2.

Reconnect

the

following

cablestothe

power supply:

• Power Supply Cable to J1

• Power Supply Ground Cableto P1

•

DC

Power

3.

Place

the

CabletoJ2

Electronics

Chassis

Moduleinthe

cart.

4. Using a slotted screwdriver, attach the module rear cover using four screws and lockwashers.

5. Reconnect

6. Use a

switching power supply voltages at

High

High

ESU

Power

Argon

DVM

the

followingfrom

Pressure

Pressure

Extension

Cable

Gas

Hose

Sensor

Valve Cable

Cable

the

Cable

module

rear

panel:

withfine point test leads orclip leads and make the

TP1-4

on the Control Display Board.

69

following

measurements ofthe

Test

Point

TP-1

TP-2
TP-3

TP-4

If

the power supplyvoltages are notcorrect, adjustthem per the Calibration Procedure inSection 7.

7.

Ensure

the

Unitfunctions properly.

Voltage

Ground

+5.0

Vdc±0.25V

+12

Vdc±0.6V

-12

Vdc±0.6V

a. Plug the Unitpower cord into a hospital-grade grounded receptacle.

b. Press the power switch inthe ON

c.

The

Unit

* Both

*

All

seconds).

conducts

tank

other LEDindicators illuminate for

a self test.

indicators illuminate for approximately

(I)

Check

position.

the

following:

the

0.5

remainderof

seconds.

the

self

test

(approximately 10

* The % PRESSURE indicator displays the appropriate pressure.

d. After

the

self

test,

make

sure

that:

* Tank 1 is selected. (IfTank 1 is empty or closed, Tank 2 is selected.)
* A single

*

GAS

Press

the

8.

Unit powerswitch in

tone

sounds.

FLOWissetto1

and

the

the

OFF

Unitisin

the

(O) position.

Gas

Off

mode.

Unplug

9.

10.

Installthe Electronics Chassis Module inthe

the

Unitpower cordfrom the wall receptacle.

Unit.

(Refer to the "Electronics Chassis Module

Replacement" procedure withinthis section for further information.)

FUSE

REPLACEMENT

This procedure describes howto replace the fuse on the power supply.

WARNING

Electric

Unit Is

Shock

Hazard: Do NOT

disassembled

and

touch

energized.

any

exposed

wiring or

conductive

Fuse Replacement: Forcontinued protection against fire hazard, replace only with

type

and

ratingasthe

The

Unit

contains electrostatic sensitive components. When repairing the

control workstation. Wear a grounding strap when

Handlethe

of electrostatic sensitive

circuit

original

fuse.

CAUTION

Unit,

handling

electrostaticsensitive components.

boards bytheir nonconductive edges. Use an antistaticcontainer fortransport

components

and

circuit boards.

surface

while

the

work at a static

the

same

Equipment

Slotted

DVM

Screwdriver

Required

1/8"

70

I.

Verify

the Unitpower switch is in the OFF (O)position.

Unplug

3.

Access

Replacement"

4.

Using

Save

cables

5. Locate the fuse on the power supply. Remove the fuse

Use a

switching power supplyvoltages at

If

the power supply voltages are not correct, adjust them per the Calibration Procedure in Section 7.

7.

Usingaslotted

8. Ensure

the

Unit

power

cord

from

the

Electronics

procedure

slotted

the

DVM

screwdriver,

hardware. Carefully remove

and

tubes

withfine point

Test

Point

Chassis

inside

the

within

remove

module.

test

TP-1

TP-2

TP-3
TP-4

screwdriver,

the

Unitfunctions properly.

the

wall

receptacle.

Module from

this

section

the

four

the

leads or clip leads and make the following measurements of the

TP1-4

Voltage

the

Unit. (Refer to

for

further

screws

rear cover. Do not pull itoutsofar that it disconnectsthe

on the Control Display Board.

information.)

and

lockwashers

and

the

"Electronics

from

replace it with

the

the

Chassis

module

same

rear

type

Ground

+5.0

Vdc±0.25V

+12

Vdc±0.6V

-12

Vdc±0.6V

attach

the

rear

covertothe

module

with

four

screws

and

lockwashers.

Module

cover.

and

rating.

a. Plug the

b.

Press

c.

The

* Both tank indicators illuminatefor approximately 0.5 seconds.

*

d. After

* Tank 1 is selected.

* A single

*

*

9. Press the

10. Unplugthe Unitpower cord from the wall receptacle.
II.

Installthe Electronics Chassis Module inthe

Replacement"procedure

Unit

power cord intoa hospital-grade grounded receptacle.

the

power switch in

Unit

conducts

All

other

seconds).

the

self

GAS

FLOWissetto1

The

% PRESSURE indicator displays

Unit

power switch inthe OFF (O) position.

a self

LED indicators illuminate forthe remainder of the self

test,

make

tone

sounds.

the

ON

test.

Check

sure

that:

(If

Tank 1 is empty or closed, Tank 2 is selected.)

and

the

within

this sectionforfurther

(I)

position.

the

Unit is in

following:

the

the

Unit.

test

(approximately 10

Gas

Off

mode.

appropriate pressure.

(Refer to the "Electronics Chassis Module

information.)

71

COMPONENT

REPLACEMENT

GUIDELINES

WARNING

Electric

Unit Is

The
control workstation.

Shock

disassembled

Unit

contains

Hazard: Do NOT

and

electrostatic sensitive components. When repairing

Wear

a grounding

touch

energized.

any

strap

exposed

CAUTION

when

wiringorconductive

handling electrostatic sensitive

surface

the

Unit, work at a static

components.

while

Handle the circuit boards by their nonconductive edges. Use an antistatic container for transport

of electrostatic sensitive

The following

are

guidelines that relate to installingand mounting components on

1. Install all non-polarized componentsso that the value, tolerance,

2. Install polarized components so that
polarization markings

3. Components with coating on

lead enters the component body. For example,

4. Center the component body between

components

are

visible andthe correct polarity.

the

and

circuit boards.

the

positive symbol (+), negative symbol (-), or other

leads may have the coating removed only to

bends

(except for miniature diodes, it is desirable to leave the

the

circuit boards.

and

part number

use

a soldering ironto remove coating on the leads.

are

visible.

the

point where that

cathode lead longer than the anode lead for identification). Lineup the leads, where required, with

the

mounting holes prior to installation.

the

5. Position lead-mounted components so that the major axis of the component is parallel to any two of

the three major planes (sides) ofthe

excess

of 1/2

ouncebymeans

other

Unit.

Mechanically support any component having a weight in

than

the

leads.

6. Properly insulate ailcomponent leads whichare, or could be, forced into a shorting conditionwith

another component lead or circuit.

7.

Do

notstress component leads between

damagetothe

component and solderpins.

mounting

pins.

Provide

an adequate strain

relief

to prevent

8. When installing components on circuitboards withthe circuitry on the component side of the board,

insulate

9.

Mount

10.

Mount

circuit

11. Radial lead capacitors

the

potting

the

sleeving of

resistors rated at 2watts or less

the

components withmetallic bodies.

flush

tothe

circuit

resistorsofgreater than 2 wattsor more0.25± 0.06 inch

board.

(dip):ifinstallation requires bending the lead, the bend should be no closer to

body

than

0.06 inch. Mounting height shouldbe0.032 - 0.25 inch from the board surfaceto the

material.

board (0.0- 0.006 inchclearance).

from

the surface ofthe printed

12. Soldered surfaces should be clean and free ofcontaminants that would result inpoor soldering.

13. Controlsoldering temperature to prevent damage to components or circuitry.

14. Remove flux residue on the board surface. For example,

remove

the

flux

residue.

use

isopropyl alcohol

and

a brush to

72

SECTION

12

FACTORY

SERVICE

RETURNING THE EQUIPMENT FOR

Before
Return

information ready:

Attach

you

return

the

UnittoValleylab,

Authorization

Hospital/clinic

Technician's

Telephone number

Department/address

City,state, and ZIP code

Model

Serial

Description of problem

Type of repair tobedone

a tag

number

number

with

Number,orcall

name/customer

name

thissame

information

call

your

Valleylab

number

tothe

SERVICE

the

Valleylab

Unit

Service

representative

when

shipping

Department

for

assistance.

itforservice.

(1-800-255-8522)

Have

the

following

for

a

DoNOTretum

Retuming

Packagethe

available, use the

Place

• Use a packing container with double wall construction.

Placeaplastic

• Use non-abrasive packing materialthat

Use

Retuming

When

packaging

• Place each

• Providea separate packingcontainer for each

• Whenreturning the Electronics Chassis

leastfourinchesof

including

Ordering

gas

tanks to Valleylab.

the

Force

Unit

the

GSU

inthe

following

interface

bag

four

crossed

Circuit

Replacement

circuit

PCBA

the

Boards

bottom.

Unit

original

strapstosecure

boardsor othersubassemblies,use the

or subassembly inan ESD(Electrostatic Discharge) bag or container.

Parts

packaging

guidelinesforpackaging:

cableinthe

over

the

Unit.

and

Other

tightly

packed

container,ifavailable.Ifthe

Unit

storage

will

the

box.

Subassemblies

Module

industry

compartment.

notdamage the surface of the

approved shock absorbing

PCBA

and/orthe

original

following

or subassembly.

High

guidelines:

Pressure Regulator

packagingisnot

Unit.

packing

materialonall

Module,

use at

sides

When ordering replacement parts forthe

• Model Number (located on

• Serial Number (located on the rear ofthe unit)

• Part Number (referto Section 13, "Service Parts

the

Unit,

rear ofthe unit)

includethis information:

List")

73

SECTION

13

SERVICE

When ordering replacement parts

All

componentsmust be

and

tolerances

PARTS

Model

Serial

mustbe

Number:

Number

replaced

equalorbetter

LIST

for

locatedonthe

locatedonthe

with

the

Unit,

include the

rearofthe

rearofthe

partsofidentical

than

original.

following

Unit

Unit

construction

Unit

performance

information:

and

value.

canbe

Replacement

adversely

substitution of Iower grade parts.

AllItems referenced inthis Section are foundin Section 14, Assemblies and Schematics.

FORCE

REFERENCE

DESIGNATOR

Iteml

Item

Item

Item
Item

Item
Item

Item

Item

Item

Item
Item

Item

Item

Not

Not
Not
Not

2

3

4
5

6
7

8

9

10

11
12

13

14

Shown

Shown
Shown
Shown

GSU

UNIT

DESCRIPTION

Gas Coag Cart

Electronic

Chassis

Module

High Pressure Regulator Module

High

Pressure

TankIDLabel

Inside

Door

Gas

LineIDLabel

High Pressure

ESU

Interface

Hose

Label

Sense

Cable

Cable

Power Receptacle Cable

Cord

Retainer

Bracket

High Pressure Valve Cable

4-pin Plug Connector

#18 Cable Clamp

Power

Cord

ArgonGas Tank (not supplied)

Active Adapter

Force

GSU

Force

Unit Instruction

GSU

Unit

Service

Manual

Manual

Mufti-Language Instruction Cards

VALLEYLAB

PART

207

202

202
202
216101384
216101385

216101

202

202

202

223

202

208
213150

202

GT100

E0502-12

945110

945100141

225

part

affected by

NUMBER

500122

701

594

701

593

701

522

389

701

586

400

844

400

891

301

108

701

591

300

648
049

400

846

060

500 528

ratings

74

ELECTRONICS

CHASSIS

MODULE

202

701

594

REFERENCE

DESIGNATOR

Item

1

Item

2

Item

3

Item

4

Item

5

Item

6

Item

7

Item

8

Item

9

Item

10

Item

11

Item

12

Item

13

Item

14

Item

15

Item

16

Item

17

Item

18

Item

19

Item

20

Item

21

Item

22

Item

23

Item

24

DESCRIPTION

Module

Box

Rear Panel Assembly

Top

Cover

0.25

Cross

Barb

Tube

Fit

0.25

ID,

75 psi, PVC Tube

Female

3/16

Barb

Luer

Lock

0.43 OD Nylon Hose Clamp

Power

ID

Switch

Tube Bulkhead

Fitting

Power Supply Cable

Power Supply Assembly

DC

Power

Cable

Cable Clamp

Power Supply Ground Cable

Fuse 2 amp,

250

Vac

Control/ Display Board

Front

Panel Assembly

Internal

Chassis

Luer

Nylon

Standoff,
Standoff,

Jackstrip

Banana

Power

Ground

Lock,

Spacer

Cable

Cable

Male

3/16

M/F

6-32SS

M/F

6-32SS

Assembly

Jack,

white

barb

5/16
7/16

Jackstrip

VALLEYLAB

PART

NUMBER

223

200

202

701

223

400

243

500122

249

101

223

100

213150
243

075 000

243

500

202

400

207

000151

202

400

213150

202

400

215

005

201

285

207

500135

202

701

202

400

223

100

213

110

213

110513

213

110514

202

701511

208

400

.223

100

489
587
528

494

717

055

075

886

895

015

900
017

002

497

901

716

448

063

695

75

REAR

PANEL

ASSEMBLY

202

701

587

REFERENCE
DESIGNATOR

Iteml

Item

2

Item

3

Item

4

Item

5

Item

6

Item

7

Item

8

Item

9

Item

10

Item

11

Item

12

Item

13

Item

14

Item

15

DESCRIPTION

Hose Clamp, 0.43 OD, Nylon
HPSensor Cable Assembly

Filter

Assembly .

Solenoid

Valve

ESU Cable Assembly

Circular

Chassis

Flow

Mass

Flow

Tubing 0.25

HP

Chassis

1/4

Rear

Connector, 4 pin

Ground

Control

Flow

Meter

Meter

Cable

ID,

Valve

Internal

Connector, 4 wire

NPT

Hose

Panel

Cable

Valve

75 psi, PVC

Cable

Barb

Hose Panel Coupling

Internal

Power

Cable

Power Receptacle

VALLEYLAB

PART

213150

202

.^202

202

202

208

202

202

245

202

249

202
208

243

223 200

243

202
208

NUMBER

055

701

585

701556

701

547

701

545

300

646

400

901

701

525

500

087

400

912

101

494

701

592

071

000

500

077

488

500

081

701

497

300

669

(MCp-S^

76

CONTROL

DISPLAY

BOARD

201

285

002

REFERENCE
DESIGNATOR

Resistors

R1.15,16,19,22,23,58,59,86

R25-27, 37,39,40, 41. 72-76. 80, 81

R7,

8,9,10,11,12

R13,14

R17

R18,85

R20.77

R28

R29
R30

R31.33, 35, 43, 45, 47, 49. 61, 70

R32.

34,

60

R36,51,56

R38

R44,

46,

48,

50

R53

R54
R57

R63,

65,

67

R62, 71

R64.66
R68.79

R82

R83.84

R87,

88

RA1.4

RA2
RA3

RA5

DESCRIPTION

1

kohm±5%,

10kohm

51

ohm

±5%,

10kohm

4.3kohm
3 k

ohm

±5%,

5.1

kohm±5%,

51

kohm±5%,

11k

ohm

240

ohm

10kohm±1%,

100kohm

Trimpot 50 k

1 Meg

340k±1%,

32.4kohm

5.11

68

Pot10k

±5%.

ohm±1%,

ohm

±5%,

±20%

71.5kohm

100kohm

330kohm

±5%,

±5%,

±5%,

±5%,

±5%,

±1%,

1/8W

±1%,

±1%,

±5%,

±5%,

1/4W

1/4W

1/2W

1/2W

1/2W

1/4W

1/4W

1/4W

1/4W

1/4W

1/8W

1/8W

ohm

1/4W

1/8W

1/8W

1/2W

1/8W

1/4W

1/4W

15ohm±5%,3W

49.9kohm

33kohm

±1%

±5%,

1/4W

Resistor Array. 1 k ohm, 9x
Resistor Array, 10 k ohm, 8x

Resistor Array, 10 k ohm, 7x

Resistor Array, 1 k ohm, 8x

VALLEYLAB

PART

234
234

234

234

234

234

234

234
234

234

234

236

234

234
234

234

234
236
234
234
234

234

234
234

234

234100148
234
234100147

234

NUMBER

024
024

014

014 068

024 078

024

024 080

024104

024
024

201

201

200

024135

201
201

201

014
200
201
024111
024123

400

201
024

100134

100

063
087

083

074

088
048

385

481

038

532
434

357

032
036
467

252

452
099

098

Capacitors

C1 -

9,14-18,

C12

26, 35 - 47. 50, 51

C13, 22, 23, 27, 28, 30

C20,31,32,33

C21

C29

C34

C48

C49

CA1

0.1

ui±

20%,

50V

100pf±5%,

100V

1.0uf±20%,50V

10ut

±20%,

0.0047

0.027

ui±

22ui±20%,

2200

pf±

4.7uf±20%,

uf±

10%,

5%,

10%,

35V

100V

50V

25-35V

100

10V

Capacitor Array0.01

77

204

118

007

204

200

013

204118

204104

204

204

204102

V

u,f,

8x

204 200
204
204

014

048

200

033

400101

030

029

074

001

200

241

Integrated

Circuits

U2
U3

U4

U5

U6,7

U8.20

U9
U10

U11
U14

U15
U16

U17, 21

U18
U19

U22
U23
U24

Diodes

CR1.3-9

CR2,10-13

DS1232
74LS374
74LS240

ADC0809

DAC0832
LM324N
74HCT04

4013B

74HCT02

LM336-5.0V

ICM7218

2803A

LM339A

40106B

Pressure

LM350

TL084

74HCT32

1N4148
1N5240B

XDCR30PSIG

210

760

210

520

210

520

210

740

210

750

210

022 000

210

240

210

027

210

240

210

300

210

700

210

800

210

300

210

211

209

001

210

300

210

200

210 240

239

014 000

239

600

015

374

240

000

001

004
001

002

018
001
002
015
106

000
086
040

032

001

Transistors

Q4-7,10,11,13,15-18,

Q8.9,12

Q14
Q17

Transformers

T1

LEDS

D1-8

D9,10

D11

D12,13,14

Miscellaneous

OP1.2.3

Y1

L1

K1.2

VN10KM

MPS-U45

2N2907A
MTD

2955-1

HV

Toroid

Isobloc

LEDDisplay HDSP7501
LEDArray HLMP2450
LEDArray HLMP2550

LEDArray HLMP2350

Photo

Isolator

XTAL

Osc.

RF

Choke

Relay Dip

3.0

55

Reed

uH

OPI1264B

MHz

SPSTNO

Speaker8ohm
Speaker,8ohm

12V

239 200

239100
239100

239 200

251

300

239

750

239

750

239

750

239

750

239

750

250

100

251 100

230

010

241

003

241

003

012

002
012

036

013

054

059

057

058

019

013

098

000

001

000

78

SECTION

14

ASSEMBLIES

See

Section13"Service

AND

Parts

SCHEMATICS

List"toreference

corresponding

Item

Numbers

and

Reference

Designators.

Figure

14.1

Force GSU Unit

79

(not supplied with

Unit)

Rgure 14.1 (continued)

80

Figure 14.2 Electronics Chassis Module

81

Figure 14.2 (continued)

82

Figure 14.4 Rear Panel

83

Assembly

Figure 14.5 High Pressure

84

Assembly

SB aa

ffl

SJ]

rV

cmC

$ 1

4 1

cN

3]

123.

s&

£

0

UU

UiU

fl ol

SB]

' P

i=7

O

"s

s>

%

3U

eaa

XlC3§

U

•

.«

Figure 14.6 Control Display Board

^B—I

j\e

3 a

rjo!

«0!

J]

oi

TJ

cS?

85

&1

H 2

.4

«o

<OOQUJU.OI

oooooooo

Ul

UJUJU

tutu

III

O

no

3w

<4<QQQQQ

QQQMMMMH

OOOGOQOQ

<<<<<<<<

toinr*

0)0)

0X1)0)0}

*N

0)0)

>0)(0

tu

FROM

MICROCONTROLLER

r—

CIRCUIT

|

Figure 14.7 Control Display Board Circuit

86

Schematics

DISPLAY

CIRCUIT

DPI

\

/

+

12VO—f-

ULN2803

dps

^

•kJIBEJO*2

op49U1g

_BQ2_

8AS

09A 08B

lLJg

*vr

D10A

*vi^SvH5vH**r%

011A

1 LJ 2 3 LJ 4 S y 6 7

i

*vr^SvH5vll

"sS>S*-

012A

*vl!

013A

Mg

*v

014A

W2ay4sy6

3 y 4 S LJ

HLMP24S0

8AS

0108

HLMP2450

8AS

01IB

HLMP25B0

OCCLUSION

012B

5vTJ*vr*5vIT

KLMP23S0

TANK1LOW

013B

3 y 4 s y 6 7 y

«vH5vri*vn

KLMP2350

TANK2LOW

014B

3vn

HLMP23B0

ON

OFF

FLOW

010C

011C

012C

013C

014C

?fH

D9C

67

7y

09D

01.00

0110

5vN

01.20

0130

01.40

5*rT

LJ 8

li

R78

10K

B

ii

TNK2EN

ltd

jn

R13

10

Qi6

vni<

VN10KM

Rgure

013

TANK1SEL

<a

016

TANK2SEL

(a

14.7 (continued)

4ll2V

DISPLAY

9

CIRCUIT

(cont'd)

—'

87

Figure

14.7
(continued)

MICROCONTROLLER

CIRCUIT

J

f^

^

(S:,

fS

Hii-

UI

MO«V{0««<0

JI

000000000)0.

HXXQQQQQOQQUX

ml«

am*noim

««<«<<«•«<

3

a

inn<ios

tor- * n

ui

bl

N(oio«n(u«40

JE

00000000(1)0.

HXXQQOQQQOQUX

u

3.3

Hi"

<<<<<*

Figure

14.7

89

(continued)

MICROCONTROLLER

CIRCUIT

(cont'd)

—'

(CW)

R67

10K

R32

100K

-J7

R3S

10.

OK

(CW)

R80

100K

+12VFILn36S0K

0/

"X

-—

L_£

_L_ •»

J20A>—i-

LH324

C50

1 I

JC

,

DLPRES

CR12

1N3240B

+12VSW

TNK1EN

TNKPBN

YAWVEN

BSIA.

OC

POWER

US.

1

2 5-

3

5 >

6 >

O-

CRS

MPSU4S

R74

^r-LM

.

>-—+•

P-

X7

•^•1£

CRS

MPSU45

CR9.

KPSU4S

rl00rl

R72

TANK

I

MTD29S5-1

I

MTD2

VN10KM

+12V

C32

*%=•

R73

10K

VALVE/RELIEF VALVE —•

-12V

♦

12V

♦sr

•P6NC

ASNC

-18V

C33

10

-S

10K

-i8TT±rol7-°+12Vaw

10K

10K

It,018

)P]

+SV

C3lU

012

TANK

RELIEF

R82

IS

LI

SSuH

VALVES

JJL

< S

ja.

-e

1

-c

2

< 3

VALVE

C34 |»

22

RS8

+12VFIL

IK

5f

1 1

U14

LM338-S.0V

K?

12VE1L.

♦8VREF

^n7

DELIVERY

PRESSURE

TO

ESU

GENERATOR KEYING -1

+SV

MT8

HOLE

ti.

C3sf

-a:

036?

-in

C37I

.3:

POWER

SUPPLIES —•

Figure 14.7 (continued)

90

-12VFIL

C29

.027

RS2

1

10.

TQNEfV

£

OK

IE06

AS.

$?£c

/

10.OK

4

RS3

—<\/S/*

RS4

use;

32.4K

LM324

S.11K

•n

•12V

O

RS7

68

*—

r=0

C30

AUDIO —J

SPl

(CW)

10K

R44

340K

R61

r—•^•V—f

r$?

R70

I

"Vv*

T^

10.OKR62

_10_

10.

OK

R71

»

I 8

>W*

"VV*

71.SK

U20

71.

J20B

LM324

SK

LM324

*

RB6SOK

8

1NS240B

"

RSI

SOK

• I

JS

K7

•

CR10

(CW)

T1PBE3

!3B

\7

TgPRES

CR11

1NS240E

PENCIL

TANK

PRESSURE

♦BV

Rgure

HANDSWITCHING

14.7

(continued)

91

ISOBLOC

CIRCUIT

♦12VFIL

4

P V FLOW

3

P-

2

1

F^n-iLf^

•=•

VCS3

FLOWMETER

.1

LM339

R41

10K

+SV

i

POSERR

SASgN/

♦

12V

x—2_Jvi

LM3S0

VO

Iaqi°uaa

74HCT04

ELQ&QD.

10K

^g)H"-l^°S

74HCT32

CR4

iJZ_

C 1
< 2

CONTROL

VALVE

Figure

14.7 (continued)

92

GAS

FLOW&ERROR

LIMITS