BERCHTOLD ELEKTROTOM 530 User manual

Service Manual (E)

Valid for version 11 .lO - 11.24

1. General

1.1Introduction

1.2

Manufacturer’s

notes

1.3General information

1.4	Notes	on product responsibility
1.5	Routine	checks following	delivery

1.6Guarantee

1.7EC certification

1.8Repairs

1.8.1Replacement of fuses

1.9Technical safety controls

2.Commissioning

ZLEKTROTOMO 640

2.1Installation

2.2	Important notes for fafe usage

2.3First usage

2.4 Visual and functional checks before each use

2.5Cleaning, disinfecting and sterilisation

2.5.1Cleaning and disinfecting of the unit

2.5.2 Cleaning, disinfecting and sterilisation of accessories

3. Ooeratinc the ELEKTROTOMB

530

3.1Pushbuttons and signal lights

3.1.1

The

front

of

the ELEKTROTOMB

530

3.1.2

The rear of the ELEKTROTOMB

530

3.1.3

Description

of

the

pushbuttons

and symbols

3.1.4

The

different

current types

4. Technical

descrimion

4.1

Technical

description

to Version

11.23

4.1.1

Technical

data

4.1.1 .l

Mains

connection

4.1 .1.2

HF

current

output

and

current

characteristics

4.1 .1.3

Safety

relevant

data

4.1 .1.4

Dimensions

and weight

4.1.1.5

Certification

4.2

Power

output

diagram

4.2.1

Power

output

in relation to

resistance

4.2.1.1

Current

type:

CUT

I

4.2.1.2

Current

type:

CUT

II

4.2.1.3

Current

type:

TUR

4.2.1.4

Current

type:

SPRAY

COAGULATION

4.2.1.5

Current

type:

SOFT

COAGULATION

4.2.1.6

Current

type:

BIPOLAR

COAGULATION

4.2.2

Power

output

as a function

of

the

position of the power regulator

4.2.2.1

Current

type:

CUT

I

4.2.2.2

Current

type:

CUT

II

4.2.2.3

Current

type:

TUR

4.2.2.4

Current

type:

SPRAY

COAGULATION

4.2.2.5

Current

type:

SOFT

COAGULATION

4.2.2.6 Current type: BIPOLAR COAGULATION

4.3Technical description Version 11.24

4.3.1Technical data

4.3.1 .l Mains connection

4.3.1.2HF current output and current characteristics

4.3.1.3Safety relevant data

4.3.1.4Dimensions and weight

4.3.1.5Certification

ZLEKTROTOM@640

4.4Power output diagram

4.4.1 Power output in relation to resistance (output characteristic)

4.4.1.1Current type: CUT I

4.4.1.2Current type: CUT II

4.4.1.3Current type: TUR

4.4.1.4Current type: SPRAY COAGULATION

4.4.1.5Current type: SOFT COAGULATION

4.4.1.6Current type: BIPOLAR COAGULATION

4.4.2

Power output as a function of the position of the power regulator

4.4.2.1Current type: CUT I

4.4.2.2Current type: CUT II

4.4.2.3Current type: TUR

4.4.2.4Current type: SPRAY COAGULATION

4.4.2.5Current type: SOFT COAGULATION

4.4.2.6 Current type: BIPOLAR COAGULATION

5.	Fault findinp without		measurinp instruments
6.	Connecting	diagram	ELEKTROTOMO	530
7.	Power control circuit		ELEKTROTOMB	530
8.	Technical	descriDtion	of the individual	boards

8.1Power supply

8.2

RF-activation

and application

8.3Mains power supply

8.3.1	IIIustration	mains	power	supply
8.4	Illustration	Board	for control elements
8.5	Illustration	Display	board
8.6	Illustration	W-generator		board
8.7	Illustration	Patient	circuit	board

8.8Control circuit board

8.8.1 Illustration Control circuit board

9. Neutral electrode setting

9.1	Neutral	electrode	setting,	valid up to			Version	11.21
9.2	Neutral	electrode	setting,	valid	up	to	Version	11.22	and 11.23
9.3	Neutral	electrode	setting,	valid	for	Version		11.24

10. Localisation and descriDtion of boards

11.SDare Part list

12.TestDoints. Localisation of fuses

13.Trouble-ShootinP and adiustments

RF power at level 1

SLEKTROTOMB 640

http:Nwww.berchtold.de/ET530-e.htn

13.1

Unit

cannot

be

switched

on

13.2

How

to

check

the

mains

supply

circuit

13.3

The

light

beam

indicator

and/or

the

output

power

do not

react to increase /

reduction

of

power

regulators

13.4

One

or

several

beams on

the

bar indicator

remain

dark

13.5

When

the power

is adjusted,

a beam

segment

is skipped

13.6

The

respective

push

buttons

do

not

react

when selecting

the current mode

13.7

No

RF

indication/acoustic

signal for

foot/hand

activation

13.8

No

RF

indication

despite

RF

output

with

acoustic

signal

13.9

No

RF

acoustic

signal despite

RF output

and

indication

13.10

No

indication

or

acoustic

signal

despite

RF

output

13.11

No

RF

output/indication/acoustic

signal

despite

activation

13.12

No

RF

output

despite visual

or

acoustic

signal

13.13Checking the control circuit board

13.14 The automatic switch off with contact and bipolar coagulation is not functioning

13.15Symbol at the front illuminates

13.16	The	bipolar	current is activated			automatically	without accessory in hand mode
13.17	The	unit cannot		be activated	in	monopolar	mode
13.18	Adjustment		of	maximum RF	power at level		10

13.18.1Up to Version 11.23

13.18.2Version 11.24

13.19 Adjustment of minimum

1. General

1.1 Manufacturer’s

notes

The

manufacturer

of

the

products

specified in the

user’s

manual

is

BERCHTOLD

GmbH

& Co

Medizin-Elektronik

Ludwigstaler

StraBe 25

Postfach

4052

D-78505

Tuttlingen

Internet:

http: / /www.Berchtold.de

e-mail:

[e-mail]

Tel.

(+49)

7461/

181-O

Fax

(+49)

7461/

181-200

Telex

762 532 berth

d

1.2 General

information

~This

user’s

manual

is considered

part

of the

equipment.

It must

be kept

in

the vicinity

of the

equipment

at all

times.

Precise

observance

of

the

user’s

manual is

a prerequisite

for

the

proper

use and correct

operation

of the

equipment,

which

is

essential

for

the

safety of

patients

and

operators

alike.

* Only

accessories

which

are specified

in this

user’s

manual

and

which

have

been tested

together with

the

equipment

may

be

used.

If

accessories

are used

which

are not

specified

in the user’s

manual,

their ability

to be used in accordance

with safety

regulations

must

be

proved.

*All

literature

relates

to

the

equipment

model

and

the

prevailing

basic

safety

regulations

when

printed.

All

rights

are reserved

for

equipment,

switches,

procedures,

software

programs

and names.

SLEKTROTOMO

640

1.3 Notes

on product

responsibility

The BERCHTOLD

company

can

only

consider

themselves

responsible

for the

safety, reliability and

function

of the product

under

the

following

conditions:

a) installation,

modifications

or

repairs

have

been

performed

only

by BERCHTOLD

or by an agent

expressly

authorized

by

BERCHTOLD

to do so,

b) the electrical

installation of

the

room

complies

with regulations

VDE

0107 or

IEC

364-710,

c) the product is used in accordance with the operating instructions.

1.4 Routine checks following delivery

The product and accessories should be inspected for possible transport damage or other defects immediately on arrival.

Reclamation

regarding

damage

or

defects

can only

be entertained

by

the selling

organisation

(BERCHTOLD

GmbH

& C o. ) or

the delivering

agency

when they

are immediately

reported.

In

case of

complaint,

the

forwarding

agent

or

the

BERCHTOLD

sub-agency

must

immediately

be informed,

prior

to the

submission

of

a damage

/

deficiency

report

to the

BERCHTOLD

main

offices

in Germany

for

further

processing

by

our

insurance

agents.

When

returning

a unit

or

one

of

its

components

to

BERCHTOLD

or

to a BERCHTOLD

service

centre,

every

effort

should be

made to use

the

original

packaging

material.

The

following

information/documentation

must

also

accompany

the returned

items:

Name

and

address

of

the

owners,

product

identification

number

(See plate

affued

to

unit),

Detailed

description

of

the

defect.

1.5 Guarantee

The product

is guaranteed

for

a period

of

twelve

months

starting

from

the

day of

delivery

to

the

end user.

Within

the

guarantee

period,

all

defects

or components

shown

to

be

due to

manufacturing

or material

failure,

will

be

car-rected

by either

BERCHTOLD

or their

official,

representative

agency.

Misuse

of

the

unit

or

interference

from

a third

party will

negate

any

customer

entitlement

under

this

guarantee.

Please

note

the

contents

of the guarantee

card

and

retain

it for

future

reference.

Important!

Repairs or a&stments

must onb be made by BERCHTOLD

or their @e$cal&

nominated representative.

Should repairs or a+stments

be made b

a .rpecQ%aillnominated BERCHTOLD

representative,tbe user is required to

obtain a detailed reportfrom

tbat agent showing the kind

and extent of repairs cmied out. This report sbouldfhber

show

the date of afy

intervention and an approved signature of tbe company (age@

who unde?-tooktbe work. Where repairs are

not cam&d out direct4 by BERCHTOLD,

repaired vstems or ystez?parts

must bear the mark

or indicator of the

repairing agent.

1.6 EC

certification

The

equipment

complies

with

the

requirements

of the EC

guideline

regarding

medical products,

93/42/EEC.

1.7 Repairs

By obvious defect, either of the unit or its connecting cable, it must be repaired or its cable renewed

ZLEKTROTOMB

640

before

being

used

again.

The ELEKTROTOMB

530 may

only

be repaired

by

BERCHTOLD

or

their officially

appointed

agent.

Should

the unit

be

repaired

by an

officially

appointed

agent,

the user

is required

to obtain

written

confirmation

of

the work

carried

out.

This

signed

confirmation

should

bare

the date of the repair

and the

details

of

the

officially

appointed

agent. When

repairs

are not carried

out

by

BERCHTOLD

direct,

the

repairing

organisation

must append their

details to the unit

or,

that

part

of the

unit which

has

been

repaired.

1.7.1 Replacement

of fuses

* Remove

mains

cable

from

the connection

socket

(38).

*The

unit

fuses

are located

in

the

plug-in

module

(37)

at the back of the unit

(see page

5). The

fuse

module

can

be

removed

by

squeezing

the

sides. The

fuse value

(at 230

V - T

2.5 A) given

on

the fuse

carrier

must

be

observed

at all times.

* Replace

the

fuse carrier

and

connect

the

mains

cable

to the

socket

(38).

1.8 Technical

safety

controls

The

following

controls

must

be carried out at least on a yearly

basis:

0 Visual checking for any mechanical or functional defect

* Safety relevant markings on the unit must be readable

* Checking of the mains fuses against nominal electrical value

*

Checking

the

calibration

of the

HF

current

output against

the setting

of

the

pressure

sensitive

pad of

the

control

panel

*

The

actual

output

measurement

for

the

current

modes

cut

I,

spray

and

softcoagulation

should

be

checked

to

the values the laid

down

in

the

specifications for

the unit.

*

Checking

of optical

and

acoustic

signalisation

*

Compare

protected

resistance

according

to

EN

60601-l

with

mains

connection. Limit

is 0,2 IR

*

Measure

leak

values

to earth. According

to

EN

60601-l

Limit

0,50

mA

(NC.)

*

Limit

1,00

mA

(S.F.C.)

**

*

Measure

case leakage according

to

EN

60601-l

Limit

0,lO

mA

(NC.)

*

Limit

0,50

mA

(S.F.C.)

**

*

Measure

patient

leakage

according

to

EN

60601-l

Limit

0,Ol

mA

(NC.)

*

Limit

0,05

mA

(S.F.C.)

**

*

Measure

patient

leakage

according

to

EN

60601-l

Limit

0,05 mA

(S.F.C.) **

(Mains

voltage

at used instrument)

*

N.C.

=

Normal

condition

**

S.F.C.

=

Single fault

condition

The results of the technical safety checks should be documented.

Should the unit proofe to be defective or otherwise unsafe it must not be used until repaired.

<LEKTROTOM@ 640

2. Commissioning

2.1 Installation

The

unit

is intended

for

use

only

in

a medical

environment

and

connection

to

the

mains must

be

in

accordance

with

the

IEC

364-710

regulations.

Further,

connection

to

the

mains

should

be via

a suitably

protected

socket

using

the

mains

lead

and

plug

provided

by the

manufacturer

or one of an equivalent

quality.

For

safety

reasons,

extension

leads

or multi-socket

connections

should

not

be

used. The

mains

socket

must

be

protected

by

a fuse

rated

at not

less than

10 Amperes.

The

ELEKTROTOMB

can be placed

on

any

flat

surface

with

a tilt

angle

not in excess of 10”. The

surface

itself

should

be

equivalent

in size to that of the unit.

Care

must

be

taken

not

to

block

the

air

vents

on the

underside

of

the

generator

and

ensure

a free flow

of

air

around

the

unit.

The

ELEKTROTOMB

should

be protected

from

the danger

of

fluids

entering

the

unit.

For

intracardiac

surgery

this

equipment

must

be

connected

to

the

main

power

stabilizer

in the

operating

room

or

location

where

it

is installed

by

means

of

the

(yellow/green)

power-stabilization

cable supplied.

2.2 Important

notes for

safe usage

Misuse

of the

generator

and

a disregard

of

these

instruction

can lead to serious injury!

Take

care to study these

instructions

supplied

with

your

ELEKTROTOMB

Warning!

The unit

is not intendedfor

me in explosion endangeredareas

Caution

must

be

exercised

when

anaesthetic

gas mixtures

such

as Oxygen

(02)

and

nitrous

Oxide

(~20)

are used

during

surgery

in

the thoracic

or head

regions. The

use of

anaesthetic

gas, exhaust management

systems is to be recommended.

Inflammable

substances

used

for

cleaning

or disinfection

or, particularly,

solvents

used

to

remove

adhesives,

must

be removed

or

fully

evaporated

before

the

using

an

electrosurgical

unit.

The

danger

of

pocketing

or

pooling

of

inflammable

liquids

or

vapours

in

body

cavities

such

as the

navel or

vagina

as well

as in

the depths

of

surgical

wounds

which

must

also be

considered

and

not

underestimated.

Liquids

must

not

be

allowed

to

gather

or

pool

under

the

patient.

The

presence

of

endogenic

gases which

may

be ignited,

must

also

be taken

into

account

when

using

electrosurgical

equipment

on

the gut and a system

of inert

gas flushing

is recommended.

Material

such as

cotton

wool

or

gauze can,

in

certain

circumstances,

also

be

ignited

via

HF

current

induced

sparking

-

particularly

in

the

presence

of oxygen.

The

use

of

electrosurgery

requires

caution

and

the

following

rules

should

be considered

:LEKTROTOM@ 640

http://www.berchtold.delET53O~e.ht~

. The	high	frequency current output of the unit should be minimal and not more than is required for the
task	to be	performed.

Note:

A

reducedor lack: offunction

after setting the unit

ou(but controls at ‘normal’power

can be causedby a number offactors

such as neutral electrodeproblems, bad connections,damagedcablesor a crustedactive electrode.Thesespoint

should be

consideredbeforeselectingwhat rnz@!~be a much bzjber unit ouput

than necessav.

* Do

not

attempt

to

test

the

unit

by

directly

discharging

against a metal

object

or

the

negative

electrode.

*The

function

of

other

electromedical

equipment

can

be interfered with

by

the

use

of high

frequency

current.

*The

switching

mechanisms

of

an electrode

handle

which

is not

completely

water

tight,

may

be

penetrated

by blood,

saline or

other

rinsing

liquids

or

amniotic

fluid producing

an

unpredictable

response

from

the

generator.

* In

order

to

prevent

accidental

HF

current

burns,

the

electrode

handle

should

be

placed

on the

instrument

trolley

when

not

in

use and

not

on the

patient.

* Placing

a finger

switched,

electrode

handle

onto

very

damp drapes or, into pooled

liquid

on

the drapes,

may

cause

patient

burns

directly

below

the

electrode

handle.

2.3 First

usage

Before

the

unit

is

first

used

surgically,

the

Manufacturer

or

their

official

agent

shall:

a) have

fully

tested

the

unit

in

the

position

in

which

it

is

to

be used;

b) have

given

full

operational

instructions

for

the

unit

to a responsible

person.

2.4 Visual

and

functional

checks

before

each use

Before

each

use

the

user

must

be

sure that

the unit

and

its

accessories

are in

good

working

order.

The

following

visual

checks

should

be made:

e check

for

external

damage

to

the

unit,

insulation

and

plugs

0 check

that the

appropriate

accessories

a present

and

that they

fit

* Very

carefully

check

the

insulation

on

endoscopic

instruments

Damaged or doubtful equipment must not be used.

Warning!

Sboukd theflow of HF current be indicated by tbe unit witbout the attachment of afoot-switch or electrodehandle witb a dozble,jhger switch then the unit isfazdty and must be examined beforeuse.An indicated ma@nction following tbe attachment of afoot-switch or electrodehandle witb double,jnger switch sbows a defectiveaccessorywbicb mm-t be checked and eventuaLI replaced.

3LEKTROTOMO

640

http://www.berchtold.delET530-e.htrr

2.5 Cleaning,

disinfecting

and

sterilisation

2.5.1 Cleaning

and disinfecting

of

the

unit

The

entire

exterior

of

the unit,

including

the

foil

covered

operating

panel, can

be

cleaned

with

normal,

alcohol

free

cleaning

fluids.

(Spray

or

wipe

disinfecting)

Please

take

note

of

the

manufacturers

instructions

for disinfectant

solutions.

2.5.2 Cleaning,

disinfecting

and

sterilisation

of accessories

After

use,

accessories

may

be

soaked

in standard

disinfecting

solutions

following

the

instructions

of

the

manufacturers,

without

exceeding soaking times.

The life

expectancy

of some

plastics

may

be

shortened

by

certain

chemicals

and

a thorough

rinsing

of

all accessories is important.

Phenol

and chlorine

solutions

are not

suitable.

Alternatively,

a mechanised

washing

and

thermal

disinfecting

process

is acceptable,

provided

temperatures

do

not

exceed 93”

C.

Good

operative

results

can

only

be

expected

when

the active

and

negative

electrode

are perfectly

clean

and free

from

any

dried

protein.

Connecting

cables

and

the

insulation

of

active electrodes

must

be

constantly

checked

and

maintained

in

perfect

condition.

Articles

with

damaged

insulation

must

not be

used.

The

following

sterilisation

temperatures

are

acceptable:

Gas sterilisation

Gas sterilisation

Hot

air

sterilisation

up to 70 OC

up to 70 OC

at200OC

Connecting

cables

for

electrode

handle

Yes

Yes

no

Electrode

handle

Yes

Yes

no

Active

electrodes

Yes

Yes

Yes

Bipolar

coagulation

forceps

Yes

Yes

no

Neutral

electrode

of

conductive

silicon

rubber

Yes

Yes

no

3. Operating

the

ELEKTROTOMB

530

3.1 Pushbuttons

and

signal lights

3.1.1 The

front

of the ELEKTROTOM@

530

ZLEKTROTOM@ 640

http://www.berchtold.de/ET530Pe.htrr

1

Unit

STANDBY

OFF-switch

2

Unit

STANDBY

ON-switch

3

Indicator

lamp

for

incorrect

output

4

Indicator

lamp

HF

leakage

current

monitoring

and for

Version

11.20 and 11.24 also a indication for

overheating of the generator

5

Indicator

lamp

neutral

electrode

monitoring

6

Light

bar

indicator

for

the

CUT

power

7

Output

control

- CUT

8

Indicator

lamp

CUT

9

Selection

switch

TUR

10

Selection

switch

Cut

II

11

Selection

switch

Cut

I

12

Light

bar

indicator

for

the

COAGULATION

power

13

Output

control

COAGULATION

14

Indicator

lamp

COAGULATION

15

Selection

switch

CONTACT

COAGULATION

16

Selection

switch

SPRAY COAGULATION

17

Light

bar

indicator

for

BI-COAGULATION

power

18

Output control BI-COAGULATIN

19

Indicator

lamp

BI-COAGULATION

20

Selection

switch for foot switch start BI-COAGULATION

(with

our

without Auto- Stop-Mode)

21

Selection

switch

for

automatic

start

BI-COAGULATION

(with

our

without Auto- Stop-Mode)

22

Socket

for

active

electrode

with

8 m m

banana

plug

23

Socket

for

double

pedal

foot

switch

to

control

active electrode 1

24

Socket

for

active

electrode

1

25

Socket

for

neutral

electrode (single

or

split

neutral electrode)

26

Additional

sockets for disposable

hand pieces

27

Socket

for

active

electrode

2

28

Selection

switch

Contact

Coagulation

with

Auto-Stop

29

Socket

for

bipolar

coagulation

instruments

30

Socket

for

single foot switch (Bi-coagulation)

31

Selection

switch

bipolar

coagulation

with

Auto-Stop-Mode

3.1.2 Rear panel of ELEKTROTOMB

530

ZLEKTROTOM@ 640						http://www.berchtold.de/ET530me.htrr
32	Symbol	for	acoustic	signal	(volume not	adjustable)
33	Rating	plate	with serial no.		and indication	of voltage
34	Equipotential		cable	connector
35	Mains	switch
36	Mains	fuses	in fuse	holder

37Connection socket for mains cable

3.1.3Description of the pictograms

Socket for hand piece with double finger switch for activating cut or coagulation

Socket for	foot	switch,	for both double pedal foot switch (monopolar)
and single	foot	switch	(bipolar)

_ ___- -,,__^, “-

,,-..- ..- ^_.~

,,,- ,“-~

-..~

“-,..- ,..,,,.-,,, ,-

_- _~-.

^ ,~

..-,. --II_..-,~.,,.“. -- ..- _ ,,_..,- ___. ,,,-”

Socket for neutral electrode cable, single or split neutral electrode

Selection switch for Bipolar coagulation ,automatic start with or without Auto-Stop. When the switch is illuminated current will automatically be switched on for Bi-coagulation 2 seconds after the forceps grasp the tissue and when Auto-Stop is selected, automatically switched off after coagulation. The Auto-Stop-Mode can be switched on and off by means of the “Auto” switch.

Selection switch for		Bipolar	coagulation using a foot	switch.	Foot switch
start with	or without	Auto-Stop. The Auto-Stop-Mode		can	be switched
on and off	by means	of the	“Auto” switch.

Selection switch		for	Auto-Stop-Mode		of	the coagulation method selected
or	Stan-switch with		no. 1 or	2. When	the	switch is illuminated current
will	automatically	be	switched	off after	coagulation

<LEKTROTOMO 640

http://www.berchtold.de/ET530Fe.htn

Socket for Bipolar coagulation instruments.

Floating	output - the neutral electrode is isolated from earth at both
high and	low frequencies

Type CF		equipment.	This	unit provides		a high	degree of	protection
against	electric shock,		especially with		reference		to permitted		low
frequency		leakage current.		Therefore	this	unit	is suitable	for	direct
cardiac	application.

.- ...“~--. _

Notice: ATTENTION! Please refer to the operator’s manual

ATTENTION!	High voltage, voltages of > 1000 V may be present at this
socket.

3.1.4 Types of output

The unit	produces unmodulated	or selectively modulated High Frequency current. The selection
switches	permit a choice of the	following current types:

CUT	I
Unmodulated		RF	current.
This	current	type	gives	sharp cutting with little arc formation and without
coagulation		of the	cut	surfaces.

ZLEKTROTOMO 640 http://www.berchtold.de/ET530-e.htn

CUT	II
Lightly	modulated	RF current. This current type gives a clean cut with
some	coagulation	of the cut surfaces

TUR

(Transurethral

resection)

Unmodulated

RF

current.

This

current

type

offers optimum

parameters

for

endoscopic

resections

in

the

areas of

Urology

(TUR), Ar&roscopy

or

using

rinsing fluids.

_x.,.,, ..--~-

cI_ _I_ _ ,,,,,__ ,-

-... ~.”

...,

..-,“....x”““”..,,-..,..Ix_-,,-.

--

,, __.,“,I_.,_,IX ~

,,____^-

_”.,,,I -,

x__I .”,,_.,- _ ,,-..._

SPRAY COAGULATION

Highly modulated RF current with high initial voltage peak for spray

coagulation

or fulguration

CONTACT COAGULATION

with or without Auto-Stop

Lightly modulated RF current for contact coagulation using ball or plate electrodes, or artery clamps. The Auto-Stop Mode is engaged when its switch is illuminated and when Auto-Stop is selected, current is automatically switched off after coagulation.

4.Technical description

4.1 Technical description to Version 11.23

4.1.1Technical data

4.1.1.1Mains connection

Mains voltage

Nominal frequency

Power consumption

Loading relationship

Mains fuses

1 lo-120 / 220-240	V alternate	current f 10 9’0
(See marking at the	rear of the	unit)

50/60	Hz
750 VA
int. lOs/3Os		(Time	relation:	active	/ pause)
2 each	2,5 A	(inert)	according	to	rating plate