Gaymar MTA-4700, MTA-4701, MTA-4702 User manual

MEDITHERM

GAYMAR

Hyper/Hypothermia

SERVICE AUTOMATIC/MANUAL MODEL

MTA-4700/MTA-4701/MTA-4702

MANUAL

CONTROL

LISTED

GARE

DE

RUES)

P/N-05921-000

303L

WO.

26

PLEASE

NOTE

IMMEDIATELY BEFORE PLEASE CEDURES

Objective

This

publication characteristics has

been of the

incorporation

are

publication or matter

made

variations

contingencies

not

should

both

necessarily

in

problems

should

is

of

to

of

design

whoie

be

PROCEEDING

REFER

IN

intended

equipment

present

in

which

or

referred

information

the

equipment

might

changes

reflected

in

part

arise

which

to

UPON

TO

THE

SECTION

to

provide

incorporated

itself

arise

in

to

improve

in

the

information

without

prior

are

not

Technical

RECEIVING

IN

READING

RECEIVING

3.1

ON

the

reader

with

in

the

Gaymar

which

is

and

its

notice

covered

Service-Gaymar

both

in

its

application

installation,

performance

provided.

is

reserved.

sufficiently

YOUR

INSPECTION

PAGE

significant

Medi-therm.

complete

make

operation,

or

reliability

The

Should

for

Industries,

MEDI-THERM,

THIS

MANUAL,

3-1.

data

regarding

Although

and

current,

it

impossible

or

maintenance.

may

right

the

occur

to

revise

further

information

purchaser's

Inc.

PRO-

every

the

large

to

at or

purposes,

the

cover in

any

change

be

essential

attempt number

all

of

addition,

人

time

and this

desired

the

É

.

First

Second

Third

subi

Printing

Printing.

September,

su

1985

.

.. . .

lot

©

por

TABLE

OF

CONTENTS

SECTION

1.0

1.1

4.1.1

1.1.1.1

1.1.1.2

4.1.1.3

1.1.1.4

1.1.1.5

1.1.1.6

1.1.2

i

|

1.2

1.2.1

1.2.

1.3

4.3.4

i

1.3.2

4.3.3

4.3.4

2.0

2.1

2.2

2.2.1

2.2.4.1

2.2.1.2

2.2.1.3

2.2.1.4

GENERAL

PRECAUTIONS Patient-Related

Control

REPAIR

SPECIFICATIONS

PRINCIPLES

OPERATOR

THEORY

In Back

TITLE

INFORMATION

Patient Blanket Patient

Blanket Dryness

of

List

Unit-Related

POLICY

In-Warranty

Out

Physical Thermal Electical Probe

Fluid Heading Cooling

Temp.

Warranty

of

Specifications

CONTROLS/INDICATORS

OF

System

Zone

Systems

Up

Safety Temperature Core

Covering between References

Precautions

Temperature

the

Repairs

Specifications

OPERATION

OF

OPERATION

Mode Mode

Effects

Patient

Precautions

and

Blanket

PAGE

4-4

1-1 4-1 1 1-1 1-2

1-3 1-3 1-3

1-4

4-5

1-5

1-5 1-5 1-6 1-7 177

2-1

o

2-1

2-3 2-3 2-4 2-4 2-4

2-4

一

1

2.2.2

2.2.2.1

2.2.2.2

2.2.2.3

2.2.2.4

2.2.2.5

2.3

3.0

,

Electrical

Power

Interface

Back-Up

Control Mode

REFAIGERATION

INSPECTION,

MAINTENANCE

System

Supply

Circuitry Circuitry and

Selection

CLEANING

Alert

SYSTEM

Circuitry

and

PROCEDURES

Display

&

PREVENTIVE

Circuits

2-5 2-6 2-6 2-6 2-7 2-11

2-13

3-1

i

|

3.1

3.2

3.2.1

3.2.2

3.2.3

3.2.4

3.2.5

3.2.6

3.2.7

3.2.8

5

|

3.3

3.3.4

3.3.2

3.4

|

i i

3.4.1

3.4.2 343

RECEIVING

CLEANING

Fluid Compressor

Pump

Panel

Blankets Probe

Probes,

FUNCTIONAL

Procedures/Equipment

Inspection

P.C.

A3

A2 A1

INSPECTION

PROCEDURES

System

Exterior

Check

Aeusable

Disposable

BOARD

Power

Control Display

Well

CHECK-OUT

Form

CALIBRATION

Supply

Board Board

PROCEDURES

AND

PROCEDURES

Board

SAFETY

INSPECTION

3-1

3-2

3-2 3-3

3-3

3-3 3-3

3-4

3-4 3-13

3-15

3-16 3-17

3.5

35.4

3.6

REFRIGERATION

Primary

SWITCH

FLOW

CONTROLLER

Back-Up

CLEANING

Adjustment

ADJUSTMENT

PROCEDURE

3-18

3-19

SECTION

TITLE

|

PAGE

4.0

4.1

4.2

4.2.1

4.2.2

4.2.3

4.2.4

4.2.5

4.2.6

4.3

4.4

5.0

5.1

5.2

5.2.1

5.2.2

5.2.3

5.2.4

6.0

TROUBLESHOGTING

TROUBLESHOOTING

REPAIR

PAOCEDURES

Recharging Replacing

Replacing

A3

A2@

Ai

Thermostats

Top

Cover

SPARE PAATS

SHIPPING/REPACKING

REFERENCE

TABLES

CELSIUS-FAHAENHEIT

RESISTANCE Patient

VALVE-TEMPERATURE

Probe Primary Back-Up Water

Water

Probe

ILLUSTRATIONS

&

SERVİCE

GUIDE

Refrigeration

Power

Control

Display

INSTRUCTIONS

CONVERSION

Thermistor

(RTA)

(AT3)

Supply

Board

DATA

Unit

Board

TABLE

CONVERSION

(AT1)

4-1

_

4-1

4-6

4-6 4-9

4-9

4-10

4-12

4-15

5-1

TABLES

5-2 5-2

i 5-2 5-3

5-4

nO

DESCRIPTION

Warm-Up Cool

ADP-10A

Operator Heating

Cooling

Electrical

Electrical Electrical Electrical

Rate

Down Rate

Circuit

Controls/Indicators

Mode

Schematic-A1

Schematic-A2 Schematic-A3 Schematic-A3

Graph

Refrigeration Test

Set-Up

Refrigeration

Flow

Switch

Recharging

Unit

Disassembly

P.C.

Board

Spare Parts Spare P.C.

A1

P.C.

A2

P.C.

A3

Parts

Board

Display

Board

Control

Board

Power

Procedures

Cleaning

Refrigeration

Connections

Diagram Oiagram

Component

Board

Component

Board

Component

Supply

Shipping/Repackaging

Graph

Diagram

System

Controller

Board

Display

Control Power Power

Adjustment

Procedure

Unit

(Chassis) (Top

Cover)

Listing...

(SN

A20001

Instructions

Board

Board Supply Supply

+)

Board

(MTA-4700/4704) (MTA-4702)

FIGURE

NO.

6.1 6-1

6.2

6.3

6.4 6-2

6.5 6-3

6.6 6-3

6.7

6.8 6-5

6.9 6-6

6.10

6.41

6.12

6.13

6.14

6.15

6.16

6.17

6.18

6.19

6.20 6-13

6.21 6-14

6.22

6.23

6.24

6.25 6-18

PAGE

6-1

6-4

6-7 6-8 6-9

6-9

6-10

6-10 6-11

6-11

6-12

ii

6-15

6-16

6-17

i

ii

1

GENERAL

INFORMATION

1.0

1.1

1.1.1

1.1.1.1

GENERAL

INFORMATION

PRECAUTIONS

PATIENT-RELATED

PATIENT

Maximum

requires

operation

THE

SHOULD

TEMPERATURE

CAUTION:

SAFETY

benefit

a

and

OPERATING

BE

CAREFULLY EVERY

POWER

(NO

CAN

PRECAUTIONS

to

thorough

application

MANUAL

20

INTERRUPTION THERAPY) BE

CONTINUED.

the

patient

knowledge

of

AND ALL

REVIEWED.

MINUTES

AND

REQUIRE

at

and

the

unit.

PRECAUTIONS

CHECK

OR AS

WILL

OFTEN

CAUSE RESETTING

the

greatest

understanding

THE

OPERATOR

PRIOR

THE

PATIENT

AS

DIRECTED

UNIT

TO GO

BY

THE

TO

margin

of

MUST

USE.

AND BY

INTO

USER

of

the

UNDERSTAND

PRECAUTIONS

BLANKET

THE

PHYSICIAN.

STANDBY

BEFORE

safety

correct

WATER

MODE

THERAPY

1.1.1.2

BLANKET

THE

CORE

TEMPERATURE

GUIDANCE

TEMPERATURE, BLANKET, OFTEN

AS

SENSITIVE,

a)

Operating

associated

volume, from cold.

b)

Temperature blood

incapacitated

patients

OF A PHYSICIAN.

AND

THE

BLANKET

DIRECTED

AND

the

BY

OPERATING

Room

with

and

constriction

normal

Sensitive

circulation

with

EFFECTS

SHOULD

SKIN

BE

CONDITION

WATER

THE

PHYSICIAN. ROOM

Patients

inadequate

response

Patients - Patients

caused

may

be

more

more normal

SET

ONLY

AS

CHECK

PATIENT,

IN

AN

TEMPERATURE

CHECK.

PATIENTS

-

of

to

by

vascular

sensitive

MORE

Patients

heart

peripheral

the

external

circulation.

PRESCRIBED

INCLUDING

AREA

IN

EVERY

PEDIATRIC,

FREQUENTLY.

function,

blood

diseases

to

temperature

Patients

BY

CONTACT 20

MEfNUTES

TEMPERATURE

with

poor

reduction

vessels

application

with

impaired

and

patients

unable

AND

UNDER

PATIENT'S

WITH

THE

OR

AS

circulation

in

may

of

heat

peripheral

changes

to

blood

deviate

and

who

are

than

detect

temperature

monitored

(i.e.

spinal

chord

when a temperature

1-1

injury)

blanket

is

should

in

use.

always

be

closely

GENERAL

INFORMATION

c)

e)

-

Pediatrics

responsive

smaller

their

higher

Additional

result

Additional flowing tissue

safe;

NOT

in

to

injury.

however,

PLACE

BLANKET.

Localized

tissue

compressed

channels procedures

-

The

to

surface

the

patient

ratio

Heat a

heat

Sources - Heat

rise

the

dispersive

Each

the

ADDITIONAL

Skin

has

and

Injury

been

blanket

core

of

in

due,

additive

between

temperature

heating

the

more

skin

contact

skin

thermal

temperature

for

example,

electrode,

effect

HEAT

SOURCES

-

Localized

boney.

associated

temperatures

in

infants

and

cooling

pronounced

area

being

applied

could by

may

BETWEEN

skin

prominences

with

well

and

than

the

to

body

by

in

the

to

electrosurgical

be

sufficient

itself

be

injurious.

THE

injury

prolonged

below

children

in

adults.

effect

because

volume.

the

blanket

area

may

of.

be

completely

to

*

PATIENT

corresponding

and

fluid-filled

cardiovascular

the

scientifically

is

more

The

of

could

contact.

currents

cause

00

AND

THE

to

established

Local

mean

effect

circulation, because

Pathological AND/OR OVER

1.1.1.3 * PATIENT

If not deviates

physician

TEMPERATURE

ischemia

capillary

may

of

PROLONGED

BONEY

CORE

TEMPERATURE

the

patient's

reach

epidermal

can

pressure, resulting

be

enhanced

local

temperature

changes

TISSUE

PROMINENCES.

core

the

prescribed

from

the

should

FREQUENTLY.

burn

follow

shearing

elevation.

may

begin

PRESSURE

temperature

prescribed

be

notified.

injury

the

application

by -

forces,

in

temperature

threshold,

in

tissue

generalized

and

increased

two

hours.”

AND

SHEARING

is

not

in

the

MONITOR

279242596

of

pressures

necrosis.

impairment

metabolic

PREVENT

FORCES--ESPECIALLY

responding

and/or

prescribed

range,

THE

the

PATIENT'S

exceeding

This

of

demand

EXCESSIVE

time

and/or

attending

local

the

does

CORE

*

Numbered

superscripts

refer

to

references

1-2

in

Section

1.1.1.6

of

this

manual.

GENERAL

INFORMATION

1.1.1.4

1.1.1.5

1.1.1.6

BLANKET

A

dry,

a

sanitary

more

localized

PATIENT

ALSO

REQUIRED.

COVERING

cotton

barrier

even

distribution

tissue

AND

PROVIDES

sheet

DRYNESS BETWEEN

The

application

solutions. allowed blanket PATIENT

LIST

OF

Prep

to

remain

during

AND

THE

REFERENCES

pressure.

THE

PLASTIC

A

FABRIC

THE

of

solutions

prolonged

BLANKET

placed

and

absorbs

of

SURFACE

PATIENT

heating

between

DRY.

between

the

perspiration.

heat

BLANKET

AND

have

and

PLACE

SURFACE.

FOR

BLANKET

or

cooling

been

patients

contributes

A

WHICH

reported and

procedures . P

patient

DRY,

AN

-

may

a

°°

KEEP

and

the

blanket

A

sheet

to

COTTON

GAYMAR'S

INTERPOSED

affect

to

injure

also

the

reduction

SHEET

BETWEEN

MUL-T-BLANKET®

SHEET

the

toxicity

the

water-circulating

THE

AREA

BETWEEN

provides

promotes

IS

skin

when

heating

a

of

THE

NOT

of

THE

1.

2.

Electrosurgery,

Scott,

Arch. Surg.

3.

Crino,

the

1980.

4.

5.

6.

8.

7.

Gendron,

1,

Moritz,

II.

the

Stoll, for 40,

Kosiak,

Physical

Llorens,

associated

Gynecol.,

Stewart

Marjanne

Operating

Francis

pp..

19-26,

A.R.

The

Relative

Causation

Alice

Evaluation

No.

11,

Michael. Medicine

Alfred

Vol.

Room.

January-March

and

of

M.

pp.

with

pp.

834-835,

AMM

310

M.

Thermal

94,

p.

H.

Thermal

Anesthesiology,

G.

Journal

Henriques,

Importance

Cutaneous

and

Chianta,

of

Thermal

1232-1238,

Etiology

and

Rehabilitation,

S.

Reaction

radical

(6/76),

Blanket

181,

Burns.

Protection.

Nov.

pelvic

Nov.

14,

Ritter

Feb.

Burns

of

1980.

Jr.,

of

Maria

1969.

of

to

1972.

Co.,

Injury

in

1967.

Caused

Vol.

Clinical

F.C.

Time

Am.

A.

Decubitus

providone-iodine

operations.

by

29,

Engineering,

Studies

and

Surface

J.

Path.,

Method Aerospace

p.

19,

Rochester,

the

Operating

Warming

pp.

149-50,

of

Thermal

Temperature

23:695,

and

Medicine,

Ulcers, Jan.

1961.

surgical

Am.

NY.

Blankets

:

Vol.

1947.

Rating

Archives

ud.

Room.

in

Jan-Feb

5,

No.

Injury

in

System

Vol.

of

scrub

Obstet.

1-3

GENERAL

INFORMATION

1.1.2

9,

Hodgkinson,

-

Chemical

Gynecology

CONTROL

UNIT-RELATED

a) | IMPORTANT

INSPECTION FOR

b)

Do

PATIENT

not

components not

be

added

c)

Gaymar rectal/esophageal

check,

ter

Medi-Therm

use a disposable

sheath

Darryl

Burns

&

- AFTER USE.

run

may

or

J.,

and

Obstetrics,

PRECAUTIONS

ALWAYS

MAKING

IMPROPER

the

machine

result.

to

the

water.

machines temperature

equivalent)

Irons,

Skin

Vol,

PERFORM

REPAIRS

REPAIR

without

Use

distilled

are

probe

to

George

B.

Preparation

17,

pp.

534-536,

FUNCTIONAL

AND

BEFORE

COULD

water,

water

provided

probes.

sheath

prevent

(B-D

cross

and

Williams,

Solutions.

CHECK-OUT RETURNING

RESULT

as

IN

damage

only.

with

When

a

performing

catalog

contamination.

Oct.

PATIENT

means

#3700

Tiffany

Surgery,

1978.

AND

MEDITHERM

to

Alcohol

of

the

thermome-

J.

SAFETY

INJURY.

internal

should

checking

probe

1.2

d)

Use

YSI

400

REPAIR

The

material

portion

The or

provided.

POLICY

Medi-Therm

and

of

Medi-Therm

in

the

to

workmanship

the

field.

safely

Center.

For

customers

location,

bio-medical

devices,

this

technician,

to

make

Hyper/Hypothermia

For

specific

details,

Series

Hyper/Hypothermia

unit

has

patient

for a period

an

additional

Hyper/Hypothermia

who

manual

Upon

elect

customer

return

contains

to

the

repair

familiar

necessary

Unit

is

recommended

contact

probes

Unit

Units

unit

with

repairs.

your

or

equivalent.

is

warrantied

of

one

four

(4)

can

request,

to

Gaymar

information

practices

Service

and

Gaymar

representative.

(1)

year.

year

be

repaired

a

shipping

or a qualified

Medi-Therm

to

for

is

available

free

of

The

pro-rated

at

the

carton

Units

allow

servicing

training

a

from

defects compressor

warranty.

factory

will

Service

at

their

qualified

medical

for

the

Gaymar.

in

be

1-4

GENERAL

INFORMATION

1.2.1

1.2.2

IN-WARRANTY

All

in-warranty

Service

Replacement

a)

REPAIRS

Department

warranty

failure

Unit procedures

calibration

OUT-OF-WARRANTY

The

following

elected:

a)

Defective

the

Gaymar

manual.

field

Tamps

period.

is

an

and

REPAIRS

repair

Component

part

repairs

before

will

Since

uncommon

is

not

options

number;

must

proceeding.

be

furnished

average

occurrence.

considered covered

are

available

-

Replacement

reference

be

authorized

lamp

part

by

Gaymar's

when

parts

Parts

at

life

of

Warranty.

can

List

by

Gaymar's

no

charge

.is

14,000

preventive

local

unit

be

ordered.

in

Section 4 of

Technical

during

hours,

maintenance

lamp

servicing

Specify

the

is

this

1.3

1.3.1

b)

Defective exchanged

factory.

c)

Defective

(without

repair.

d)

Unit

the

can

represents

SPECIFICATIONS

PHYSICAL

Dimensions:

a}

Repairs

cause

be

SPECIFICATIONS

Printed for

refurbished

Top

Module - The

base)

-

of

the

returned

the

most

37

(93.98

Circuit

(PC)

boards

Board - Defective

at a fixed

defective

to

the

factory

If a Hyper/Hypothermia

problem

to

expensive

in.

high x 17-1/8

cm

cannot

the

factory

high x 43.50

or

be

repair

in.

top

module

qualified

Unit

determined,

for

servicing.

option.

deep x 14

cm

deep x 35.56

cost

Service

becomes

the

in.

PC

Boards

directly

can

be

Center

defective

complete

This

wide

cm

wide)

can

be

from

the

returned

for

and

unit

normally

Weight - MTA-4700/4701:

b)

145

lbs.

65.77

(full);

kg

(full);

124

56.25

Ibs.

kg

1-5

(empty);

Shipping

Wt:

150

68.04

15$.

kg

GENERAL

INFORMATION

Weight - MTA-4702:

155

lbs.

70.31

(full);

kg

(full);

134

lbs.

60.78

(empty);

kg

(empty);

Shipping

Wt:

160

Tbs.

72.58

kg

1.3.2

Reservoir

Pressure,

Flow:

THERMAL

High

a)

1)

2)

Low

1)

2)

Capacity:

Dead

16

GAYMAR

SPECIFICATIONS

Temperature

GPH

Head:

(60.57

H/H

Adjustable:

Fixed:

Temperature

Adjustable:

43°C

47°C

Fixed:

9

quarts

7.0 + 1.0

liters/hour)

Blanket

Limits

41°C + 0.5°C

to

46.5°C

to

50°C

Limits

Cut

in

Cut out

2.5°C

(Unit

(Will

5.2° - 6.5°C

3.9? - 4.5°C

to

-3.0°C

(8.52

psi

minimum

(Average

will

REMOVE.

Audible

turn

liters)

(48.23 + 6.89

Water

FROM.

Alarm

heater

distilled

through a full

Temperature)

go

into

MACHINE

SERVICE

will

be

off

water

kPa)

condition

on.)

and

on

size

SHUT-DOWN

and

only.)

h)

Flow

Switch

12 + 2

Check

Below

Patient

32°C

Blanket

4°C

Warm-up

See

Cool

See

to

Figure

Down

Figure

Actuation

GPH

(45.42 + 7.6

Probe

32°C

Activation

or

Temperature

41°C

Water

41°C

Rate

Curve

6.1,

Rate

6.2,

Level

Temperature

above

Temperature

Page

Curve

Page

45°C

Control

6-1

liters)

Range

Control

(whenever

for

Automatic

Range

for

probe

Mode

Manual

is

used)

Mode

1-6

GENERAL

INFORMATION

1.3.3

ELECTRICAL

a)

Display

b)

c)

Controller

Current

Chassis

Patient

d)

e) f)

g)

Input

Frequency Power

Input

--with

SPECIFICATIONS

Accuracy:

Leakage:

Microamps

Probe

Microamps

Voltage

Consumption

Current

compressor

(Grounded)

Maximum

(Volts)

(Hz)

(AMPS)

Water

Patient

Water

Patient

Maximum

(WATTS)

and

heater

Temperature

MTA-4700

100

50

120+10

60

1325

ON

11.5

41°C,

+0.5°C,

+.75°C,

+0.5°C,

+1,8ºF

+.9°F

+1.3°F

+.9°F

MTA-4701

100

50

(+10)

100

(-

5)

50/60 50/60 1150 1188

10.0

MTA-4702

200

100

220+20

5.5

1.3.4

PROBE

a)

b)

--with

SPECIFICATIONS

compressor

heater

Disposable

1.

DP-400 - Disposable

Tength

2.

3.

ADP-10 - Reusable

Gaymar

ADP-10A

American

CONTAINS OFFSET

SEE

ADAPTOR

Reusable

1.

Probes

PAT-101 - Patient

ON

Probes

(requires

or

Cincinnati

-

Reusable

Medical

TWO

FOR

USE

CIRCUIT

ON

adaptor).

adaptor

Systems

ADDITIONAL

WITH

probe--Rectal/Esophageal

・

7.5 6.5

4.0

Rectal/Esophagea1--Adult/Smal1

cable

Sub-Zero

adaptor

for

DP-400

equipment).

cable

equipment).

for

RESISTORS

AMERICAN

DIAGRAM,

MEDICAL

FIGURE

6.3,

3.5

DP-400

NOTE:

TO

PROVIDE

SYSTEMS

PAGE

(connects

-

3.0

2.5

Child - 3'

(connects

THIS

TEMPERATURE

EQUIPMENT

6-1.

Adult

(10'

to

ADAPTOR

ONLY.

long).

2.

3.

РАТ-102 - Patient

(10'

long).

PAT-108 - Patient

probe--Rectal/Esophageal

probe--Skin

Surface

1-7

(10'

-

Pediatric

Jong).

PRINCIPLES

OF.

OPERATION

2.0

PRINCIPLES

The

Gaymar

patient which

Gaymar's basic

Probe), specified the

obtain

temperature

machine

modes,

patient

the

MEDI-THERM temperature

Patient Probe

OPERATOR

Temperature

and

placing

CONTROLS/

OF

OPERATION

Automatic

AUTOMATIC

temperature

set

point. . While

temperature

desired

also.

Patient

by

the

controlled

may

be

and

results.

features

without providing

Monitoring,

the

unit

INDICATORS

Control

application

water

operated

MANUAL.

is

in

and

adjust

a

convenient

in

the

System

of

is

circulated.

to

provide patient

In

Automatic

automatically

MANUAL

mode,

the

blanket

means

therapy.

is

achieved

PATIENT

TEMP

is

designed

hypothermia

regulated

the

operator

water

of

This

third

by

utilizing.

NO

THERAPY

to

blankets

therapy

mode

(with

to an

must

temperature

monitoring

operating

the

mode.

regulate

through

in

two

Patient

operator

observe

to

patient

mode,

Patient

For

operator

PATIENT

0.19

BLANKET nearest

TEMPERATURE - displays

C,

.19F (see

WATER 1° C,

COOL - when

water

IN

the

--

TEMP

desired

minimum

ZONE - when

HEAT - when

water

CHECK been

CHECK

requested

--

maximum

WATER

restricted.

PATIENT

patient

(32°C - 45°C)

has

been

heated

interrupted:

or

cooled.

controls

Item

TEMPERATURE 1°F

(see Item

illuminated,

temperature,

illuminated,

temperature

illuminated,

temperature

FLOW - when

TEMP:

for

SETTING

temperature

patient

Recheck

and

indicators

#22).

~

indicates

setting.

indicates

illuminated,

temperature

blanket

the

patient

displays

#22).

4°C.

indicates

42°C.

-

when

setting

water

setting.

see

Figure

temperature

blanket

controller

indicates

illuminated,

is

the

not

water.

within

control.

is

being

6.4, Page

to.

temperature

is

calling

unit

is

calling

the

flow

indicates

the

At

this

circulated,

6-2.

the

nearest

to

for

controlling

for

of

water

that

normal range

time,

therapy

but

the

cool

at

warm

ha

the

not

PRINCIPLES

OF

OPERATION

© ©

CHECK the temperature can problem

MACHINE

that

This

silenced.

TEST

indicate

legends should

MANUAL

the

thumbwheel

MANUAL BLANKET

PATIENT

Patient

be

disabled is

SHUT-DOWN

all

functions

alert

LIGHTS - press

and

sound.

BLANKET

blanket

CONTROL - when

Control

PROBE - when

Probe

range).

being

1)

Probe

2)

Probe

3)

Incorrect

will

"188°E"

also

2

thumbwheel

WATER

water

switch.

mode.

is

below

This

(by

pressing

resolved.

is

dislodged.

is

defective.

probe

REMOVE

except

be

accompanied

"TEST

and

"188.8°E,"

TEMP - when

temperature

illuminated,

32°C

alert

Check

FROM

the

LIGHTS"

legends

or

is

Item

to

is

being

SERVICE

refrigeration

switch.

all

to

indicates

above

accompanied

21)

determine

by

should

illuminated,

the

45°C

for

used.

-

when

compressor

an

audible

Temperature

machine

be

temperature

unit

is

the

(out

of

by

an

audible

five

status

minutes

if:

illuminated,

alarm

legends,

lit. . The

the

unit

indicated

operating

temperature

normal

have shut

that

displays

will

in

tone

while

indicates

cannot

audio

the

patient

should

3

‘alarm

control

on

MANUAL

of

that

the

down.

be

mode

the

© ©

©

® ©

MANUAL MANUAL

THUMBWHEEL

Node) mode).

AUTO

AUTOMATIC

AUTO

AUTOMATIC

PATIENT

Patient

PATIENT

monitor

PATIENT

patient's

AUTOMATIC patient's switch.

CONTROL

BLANKET

temperature

CONTROL

PROBE

Probe

TEMP

patient's

TEMP

MODE

Control

SWITCH

PATIENT

MONITOR

NO

temperature.

PATIENT temperature

-

when

CONTROL

MODE

CONTROL

JACK

assembly.

temperature.

THERAPY - when

TEMP - when

SWITCH - when

mode.

used

or

SWITCH

-

to

PATIENT

illuminated,

mode.

-

mode.

connector

Use

only

MODE

to

No

the

SWITCH

therapy

set

when

temperature

pressed,

temperature

the

pressed,

is

designed

YSI

400

-

when

No

therapy

illuminated

is

illuminated,

pressed,

being

the

in

°C

(depending

unit

Series

is

indicated

is

the

unit

to

probes

being

the

unit

provided.

the

unit

will

only

operating

will

fit

machine

the

unit

provided.

will

on

enter

for

on

operating

enter

or

equivalent.

will

only

control

the

thumbwheel

the

BLANKET

in

the

end

of

only

monitor

the

2-2

PRINCIPLES

OF

OPERATION

A © ©

ALARM

SILENCE

illuminated,

will

problem

alarm

CELSIUS

observe

ON/OFF power

PROBE sheath unit

between

Digital

not,

probe

does

silence

is

in

the

TO

blanket

SWITCH

to

the

CHECK

and

in

MANUAL

33°C

temperature

probe

appears

not

meet

CAUTION:

SWITCH

the

audible

the

alarm

being

resolved.

MACHINE

FAHRENHEIT

water

- a circuit breaker

unit.

-

for

SHUT-DOWN

CONVERSION

and

WELL - Perform

then into

mode

&

37°C.

probe check

with a blanket

Wait

displays

may

be

defective

defective,

this

test,

Use

try

unit

protective thermometer to

prevent

if

the

alarm

approximately

This

REMOVE

will

switch

CHECK

sound.

will

FROM

five

SERVICE

SWITCH - press

patient

probe

temperatures

On/Off

check

well

by

on

inserting

blanket

connected.

until

should

or

another

may

sheath

unit

read

incorrect

probe.

be

out

sheath

or

equivalent)

stabilizes

within

of

(B-D

cross-contamination.

PATIENT.

PROBE light

Depressing

(5)

minutes

not

silence

alarm

and

in

degrees

Switch

that

probe

manifold.

Set

thumbwheel

2°C

of

probe

If

calibration.

catalog

is

new,

on

and

#3700 probe

this

the

condition.

hold

Fahrenheit.

controls

into

(IN

TEMP

each

being

correct

switch

while

audible

switch

sterile

Operate

switch

ZONE).

other.

used.

is

the

to

the

If

probe

©

OO

2.

TS

2.2.1

NOTE:

BLANKET

fittings

AIR

three

MANIFOLD,

are

VENTS - louvers

sides

circulation.

OPERATING

WATER

only.

INSTRUCTIONS

FILL

Proper

CAUTION:

THEORY

Operation

OF

OPERATION

of

Electrical

FLUID

SYSTEM

THIS

marked

of

the

OPENING

level

DO

NOT

the

machine

and

Refrigeration

WELL

IS

BLANKET(S)

SUPPLY

and

-

is

and

screened

cabinet.

lift

attained

OVERFILL

may

NOT

TO

WATER

RETURN.

Keep

cover

when

be

best

Systems.

BE

USED

FOR

CONNECTIONS

ventilation

clear

to

fill

water

unit

just

explained

Their

CALIBRATION

-

machine

openings

to

assure

with

distilled

touches

by

examining

description

connector

are

located

adequate

the

screen.

the

follows.

on

air

water

Fluid,

The a

of

cold

Medi-Therm

water

main

system

Unit

reservoir

components

utilizes

and a warm

a

two-reservoir

water

are

shown

2-3

system

reservoir.

in

Figure

which

Physical

6.20,

consists

locations

page

6-13

of

and

PRINCIPLES

OF

OPERATION

2.2.1.1

Figure

In

the

6.21,

MANUAL

temperature

the

IN

TEMP

temperature

The

cold

quarts

(8.52

maintained

The

warm

when means

temperature

water

heat

of

HEATING

page

of

is

ZONE

is

water

liters)

by

the

is

called

the

in

6-14

mode,

the

within

of

the

water

1°C

condition

within

1°C

reservoir

of

refrigeration

reservoir

for,

cartridge

the

warm

this

Blanket

going

of

and

of

system

water

contains

water

heater.

water

manual.

to

the

desired

will

the

BLANKET

at

controller

in

reservoir

Water

Probe

blanket.

setting,

remain

there

WATER

maintains

4°C.

This

(S4).

only a small

the

reservoir

The

is

maximum

41.5°С.

(RT2/RT3)

When

so

the

long

the

Unit

blanket

as

temperature

approximately

reservoir

reserve

is

temperature

of

quickly

attainable

senses

water

will

enter

the

setting.

nine

water,

heated

water

the

(9)

is

and

by

2.2.1.2

2.2.1.3

2.2.1.4

See

Figure

6.5, Page

COOLING

See

Figure

IN

TEMP

When

the

between

BACK-UP

Several

maximum

MAXIMUM

To

limit

utilized:

6.6,

ZONE

Medi-Therm

heating

SYSTEMS

back-up

patient

WATER

maximum

6-3.

Page

6-3.

is in

(Fig.

systems

6.5,

safety.

TEMPERATURE

water

the

IN

TEMP

pg.

6-3)

are

incorporated

temperature,

ZONE,

and

the

cooling

into

the

following

water

(Fig.

the

path

6.6,

unit

controls

alternates

pg.

6-3).

to

assure

are

a)

The

primary

circuitry

through

the

high

limit

warm

temperature the

maximum

water

reservoir

2-4

back-up

average

to

sensor

water

(RT1)

temperature

41° + 0.5°C.

and

associated

flowing

b)

The

second

high

temperature

back-up

sensor

PRINCIPLES

(43°

to

OF

OPERATION

46.5°C)

is

the

bimetallic thermostat

along

with

MACHINE-SHUT

shuts

с)

Bimetallic

sensor turn

resets.

MINIMUM Temperature

down

the

WATER

(47°

TEMPERATURE

of refrigeration thermostat

(S4).

circuit

the

refrigeration

(S1),

If

Sl

is

triggered,

activates,

associated

DOWN

REMOVE

all

functions

thermostat

to

50°C).

cartridge

water

controller

is a low

compressor.

in

which

(S2).

If

control

FROM except

(S3)

is

If

this

heater

the

(S4)

off

cold

(3.9?

temperature

the

MACHINE

in

turn

this

circuitry,

SERVICE

the

refrigeration

the

third

thermostat

and

reservoir

to

back-up

SHUT-DOWN

shuts

thermostat

circuit

high

is

on

again

is

6.5°C). (-2.5°

REMOVE

down

all

is

activated,

will

which

activate

automatically

compressor.

temperature

activated,

when

controlled

it

cools

The

to

+3.0°C)

bimetallic

FROM

functions

it,

the

back-up

it

will

and

by

the

for

SERVICE

except

2.2.2

ELECTRICAL

The

unit's provisions operating back-up

temperature patient

The

solid-state

set

point

serviceability.

The Circuits,

Component and

electrical

Circuits,

6-17.

and

6-7.

SYSTEM

electronics

for

mode

and

temperature

while

Back-Up

Mode

layout

The

operator

selection),

safety

using

design modular

system

Selection

and

electrical

package

input

status

systems.

an

internal water

using a patient

assures

construction

consists

and

Safety

Circuits,

parts

The

reliability

designation

schematics

utilizes

(temperature

and

alert

controller

temperature

connected

provides

of

the

Circuits,

and

Display

are

a

closed-loop

set

displays,

controls

probe.

and

accurate

for

Power Control

Circuits.

shown

on

point

probe,

easy

Supply,

on

pages

controller

selection and

redundant

blanket

or

controls

control

and

Circuits,

6-15, 6-16,

6-4, 6-5, 6-6,

at

convenient

Interface

with

and

water

the

Alert

2-5

PRINCIPLES

OF

OPERATION

2.2.2.1

2.2.2.2

POWER

With

SUPPLY

the

completely

output

of

regulators

+5,

+12,

(L.S.)

is

INTERFACE

Interface consists

associated

drivers

provide and cold

used

electrical

the

line

solenoid

exception

contained

T-1

is

(A3)

08

-12,

used

and

to

CIRCUITRY

Circuitry

of

(A3)

parts.

to

voltage valve

of

Transformer

on

the

rectified,

through

-5

volts

illuminate

is

also

Ul

through

(A3)

UL

control

isolation

power

KI

while

A3

Power

(A3)

D.C.

status,

located

(A3)

through

their

between

circuits.

T-1,

Supply

filtered,

011,

A

is

full

alert,

on

U4,

(A3)

respective

the

(A3)

U2

the

unit's

Printed

and

by

controlled

the

(A3)

U4

low

and

wave

are

triacs;

rectified

and

legend

A3

Power

01

optically

voltage

U4

and

(A3)

Power

Wiring

means

at

output

Supply

through

these

control

(A3)

02

control

Supply

Board.

of

levels

lamp

lamps.

Board

(A3)

coupled

combinations

01

control

is

The

on-board

of

supply

and

04

and

triac

circuits

the

the hot

2.2.2.3

solenoid

while

BACK-UP

The

solid

surrounding

machine

41°

(A3)

CIRCUITRY

A3

Board

state

+

0.5°C,

valve

base.

operates

heater

off

0.5°С.

Finally,

SERVICE

(A3)

circuitry,

CR9,

thermostats

Ul

K2.

and

also

(A3)

contains

on/off

components , and

Whenever

(adjustable

independently

to

limit

the

A3

Board

which

their

interconnected

Sl

and

S2 in

U3

and

G4

control

the

controller

RT1

the

temperature

by

from

the

average

includes

the

base.

(A3)

power

03

to

control

the

Primary Back-Up

consisting

located

A3R1),

main

output

the

(A3)

in

of

U7

disables

control

water

MACHINE

Q6,

components,

Under

normal

of

the

(A3)

and

heater

SHUT-DOWN

the

circulating

circuit.

Circuit.

(A3)

output

U7,

manifold

water

05.

circuits

temperature

U6,

(A3)

fixed,

non-adjustable

conditions

This

to

REMOVE

U5,

(A3)

in

exceeds

circuit

turn

to

(A3)

pump

is

05,

the

41°

FROM

Q7,

06

a

+

is

kept

turned

completes

into

the

on by

the

range

the

heater

from

action

circuit.

-3°C

to

of

If

+2.5°C

2-6

(A3)

the

or

R19,

(A3)

blanket

rises

C11

water

into

and

(A3)

temperature

the

range

CR10

from

and

falls

43°C

to

46.5°C,

Sl

or

S2

respectively

will

open

PRINCIPLES

and

full

line

OF

OPERATION

voltage

will

appear

(A3)

turning

isolated

the

audible

remains If,

to to

The

series

temperatures

MACHINE

between

U6

and

on

output

controller

MACHINE

alarm.

latched

upon

machine

apply

recur.

final

with

SHUT-DOWN

(A3)

U5

even

after

of

which

SHUT-DOWN

This

up

turn

therapy

protective

the

in

the

P1

will

(A3)

returns

MACHINE

and

on,

will

device,

heater

range

REMOVE

pins 7 and

be

turned

S1

(or

S2)

U5,

buffered

the

REMOVE

can

cause

FROM

SHUT-DOWN

be

cleared

the

fault

the

bimetallic

and

from

SERVICE

would

47°C

1.

In

on.

has

closed

by

(A3)

controller

SERVICE

only

condition

MACHINE

thermostat

regulate

to

50°C,

circuit.

this

(A3)

U6

again.

07,

to

standby

indicator

REMOVE

by

turning

still

SHUT-DOWN

but

case,

optical

prevents

The

results

FROM

the

REMOVE

$3,

will

SERVICE

the

exists,

heater

not

couplers

(A3)

electrically

in a signal

status,

and

is

wired

turns

enables

condition

machine

attempting

FROM

for

activate

06

from

the

off.

SERVICE

only

water

the

to

on

in

2.2.2.4

CONTROL

The

Control

Board;

located Switch,

Control

A)

Reference transistors

generate at stable

appropriate,

on

B)

Blanket

of

(A2)

AND

ALERT

and

exceptions

in

the

machine

and

Patient

and

Alert

temperature

nominal

resistors

system

water

the

feedback

R11

CIRCUITRY

Alert

are

Circuits the

Probe.

Circuitry:

Diode

(A2)

(A2}

levels

are

to

minimize

operation.

temperature

loop

and

(A2)

Flow

base,

CR1,

Οἱ

stable

of

+5

used

reside Switch

the

The

integrated

and

here

the

sensing

of

(A2)

R12

primarily and

ALARM

SILENCER

following

(A2)

02,

reference

-5

volts,

and

effect

thermistors

U3.

is

a

linearly

Blanket

is a brief

circuits

and

voltages

respectively.

throughout

of

ambient

The

combination

on

the

A2

Water

Switch,

Temperature

description

(A2)

U1

associated

(+Vref

the

circuitry,

temperature

RT2

and

temperature

Main

Probe

and

components

and

Temperature

RT3 are

of

RT2, ВТЗ,

dependent

Control

Assembly

Set

of

the

(A2)

U2,

-Vref)

where

changes

part

resistive

network.

A

linear

2-7

temperature

sensitive

voltage

results

PRINCIPLES

OF

OPERATION

at by

the

(A2)

output

R9

and

of

(A2)

R6.

U3

with

The

zero

and

voltage

at

span

(A2)

adjustments TP4

is

thus

provided

linearly

dependent

This

Board.

A

C)

Patient

TP5 probe

temperature

achieved.

Display

Transistors

throw

way

temperature

controller.

(A2)

The

E)

thumbwheel

signal

circuit

Probe

that

response

Board.

switch;

of

A2J2

U12;

controller

on

the

temperature

goes

(A2) (U4)

in

its

represents

over

determinations

This

signal

(A2)

Q3

under

or

The

switch

R117

allows offset

set

switch.

off

the

similar

feedback

PATIENT the

goes

through

command

1)

this

patient

point

This

of

board

to

temperature.

range

from

of

off

(A2)

of

switch

temperature

output

correction

is

setting

the

(A2J2

that

loop

+30°C

the

Q7

the

selects

is

determined

is

Blanket

described

to

required

board

Water

6)

to

in

generate a signal

(A2)

R19

to

+41°C

accuracy

(A2J2

form a single

Mode

buffered

Selection

either.

as

the

of

U12.

converted

by

voltage

to

Probe

the

Assembly.

Al

"B"

uses

Display

at

linearizes

so

that

patient

can

3)

to

the

pole

Circuits

blanket water

input

a

three

a

double

to

follower

digit

voltage

the

(A2)

the

be

Al

(by

the

by

resistor

(A2)

R35

ladder

and

network

(A2)

respectively.

The

output

from

(A2)

appropriate

This

the R120

associated components the

(A2)

TEMP

integral

U21

the

Ull.

error

difference

provides

error

016

NO

provides

from

selected

If

polarity

signal

amplifier;

whenever

THERAPY

of

the

unity

the

between

offset

mode.

difference

(A2)

R38

controller

probe

circuit

two

is

thus

the set

correction

is

an

the

machine

Otherwise,

gain

inversion.

R24

provide

set

are

levels

developed

integrator

is

signal

through

span

point

compared

are

at

to

the

and the

for

operating

is

in

standby

the

output

from

the

The

(A2)

and

zero

circuit

by

unequal,

the

output

magnitude

actual

Uli.

reset

difference

(A2)

by

mode

of

error

R34

and

adjustments,

(E)

error

an

output

of

(A2)

and

temperature.

U20

on

the

(A2)

Q14

or

in

(A2)

U20

amplifier.

signal

(A2)

and

U5.

that

amplifier

of

Ul1.

sense

and

output

of

its

of

through

PATIENT

is

the

(A2)

and

the

2-8