Mastro Aca2001 Guide

064_03

Instructions for installation,

use and maintenance

03/2006

GAS KITCHENS

ACA2001 · ACA2002

ACA2003 · ACA2004

ACA2005 · ACA2006 · ADA2009

ACA2009 · ACA2010

ACJ0001

ACA2011 · ACA2016

ACJ0002

ACA2007 · ACA2008

ACJ0003

CHARACTERISTICS

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Supplied by:

Date:

Customer Service:

FAX

e-mail

INDEX

1 Diagram 4

2 Features of the appliances 9

3 Technical data 9-11

4 Installation instructions 12

4.1 Safety rules 12

4.2 Structure, framework and safety devices of the appliances 12

4.2.1 Cooking zone 12

4.2.2 Oven 12

Gas version GN 2/1 and MAXI 12

Gas version GN 1/1 ventilated 12

Electric version GN 2/1 12

Electric version GN 1/1 ventilated 12

4.2.3 Neutral cabinet 12

4.3 Assembly 12

4.3.1 Installation premises 12

4.3.2 Statutory regulations and technical requirements 13

4.3.3 Installation 13

4.3.4 Installation operations 13

4.3.5 Gas connection 13

4.3.6 Smoke extraction 13

4.3.7 Electrical connection 13

4.3.8 Equipotential 13

5 Operation preparation 13

5.1 Preparation and Start-up 13

5.1.1 Start-up 13

5.1.2 Check of power 13

5.1.3 Checking the input pressure 13

5.1.4 Power check with volumetric method 14

5.1.5 Power check for operation with liquid gas 14

5.1.6 Check of pilot flame 14

5.1.7 Checking the primary air 14

5.1.8 Operation Control 14

5.1.9 Operator training 16

5.1.10 Conversion and adjustment 16

5.1.11 Replacement of burner nozzles 16

5.1.12 Setting reduced capacity power 16

5.1.13 Replacement of pilot nozzle (open flames) 16

5.1.14 Replacement of pilot nozzle (gas oven GN 2/1) 16

5.1.15 Replacement of pilot nozzle (gas oven MAXI) 16

5.1.16 Replacement of nozzle of gas ovens GN 1/1 and MAXI 16

5.1.17 Replacement of burner nozzle (gas oven) 16

5.2 Maintenance 16

5.3 Replacing parts 16

5.3.1 Gas valve (open flames) 16

5.3.2 Thermocouple (open flames) 16

5.3.3 Plug (gas oven) 17

5.3.4 Gas valve (gas oven) 17

5.3.5 Thermocouple (gas oven) 17

5.3.6 Main burner (gas oven) 17

5.3.7 Heating elements (electric oven GN 1/1) 17

5.3.8 Heating elements (electric oven GN 2/1) 17

5.3.9 Fan for electric and gas ovens GN 1/1 17

6 Instructions for use 18

6.1 Safety, cleaning and repair rules 18

6.2 Start-up 18

6.2.1 Lighting and disconnecting open flame burner 18

6.3 Lighting and shutting down a gas oven 18

6.3.1 Lighting the pilot (gas oven GN 1/1) 18

6.3.2 Lighting the pilot (gas oven GN 2/1 and MAXI) 18

6.3.3 Lighting the main burner and temperature adjustment

(gas ovens GN 2/1 and MAXI) 19

Shutdown 19

6.3.4 Lighting the main burner and temperature adjustment

in gas oven GN 1/1 19

Shutdown 19

6.4 Lighting and shutdown of electric oven GN 1/1 19

6.5 Lighting and shutdown of electric oven GN 2/1 19

6.6 Turning the appliance off in case of breakdown 20

6.6.1 What to do in case of failure or prolonged period of

disuse 20

6.7 Appliance care and frequency of maintenance 20

6.8 Recommendations for handling stainless steel industrial

kitchens 20

6.8.1 Useful information on stainless steel 20

6.8.2 Warnings and advice for maintenance of stainless steel

appliances 20

6.8.3 WEEE Directive 21

7 Appendix: Electrical diagrams 22-24

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1 - DIAGRAM

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6.0 kW

Ø 120 mm

7.8 kW

Ø 120 mm

180

200 200

270

250

310

390

1/2"

100 150

142

900

300700

506

150

1/2"

970

400

53 294

1/2"

ACA20002

ACA20004

ACA20006

ACA20007

ACA20005ACA20001

ACA20004

ACA20006

ACA20007

ACA20001

800

694

53 53

21 21

1/2"

220

680

255

350

295

310

590

3/4"

220

480

180

250

270

310

390

1/2"

200200 400 200

200 400

220

480

180

250

270

310

390

1/2"

7.8

6.0

7.8

6.0

7.8

1 - DIAGRAM

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1/2"

1200

5353 1094

21 21 100 150

142

900

300700

706

150

1/2"

970

6.0 kW Ø 120 mm

7.8 kW Ø 120 mm

7.8

6.0

7.8

6.0

ACA20008

ACA20009

ACA20011

ACA20008

ACA20009

ACA20010

ACA20011

ACA20012

ACA20008

ACA20009

ACA20010

ACA20011

ACA20012

ACA2016

1/2"

1200

5353 1094

21 21

1/2"

1200

5353 1094

21 21

ACA20012ACA20010

480

180

270

250

310

390

200 200400400

1/2"

220

1 - DIAGRAM

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6.0 kW

Ø 120 mm

7.8 kW

Ø 120 mm

800

694 53

270

700

340

ACJ00001

ACJ00002

ACJ00003

200

200 400

700

180

250

270

140

ACJ00002

ACJ00003 ACJ00003

6.0

7.8

6.0

ACJ00001

400

294 53

140

200 200

7.8

6.0

ACJ00001 ACJ00002

700

180

270

250

200 200400400

140

7.8

6.0

7.8

6.0

1200

5353 1094

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1 - DIAGRAM

100 150

142

900

300

655

440

150

1/2"

970

694

53 53

21 21

1/2"

220

680

295

310

590

1/2"

220

435

180

250

225

310

345

200200 400

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1 - DIAGRAM

1/2"

5353 1094

21 21

180

225

250

310

345

200 200400400

1/2"

100 150

142

900

300

655

440

150

1/2"

970

220

680

220

435

2 - CHARACTERISTICS OF THE APPLIANCES

3 - TECHNICAL DATA

These appliances are used for professional purposes. Installation,

repair and use must be carried out by expert personnel.

These instructions for installation are for our gas kitchens set up for

the category in the table on page 10/11. The data plate is located on

the front part of the appliance (on the control panel).

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Model

ACA20001

ACJ00001

ACA20002

ACJ00002

ACA20003

ACJ00003

ACA20004

ACA20005

ACA20006

ACA20007

ACA20008

ACA20009

ACA20012

ACA20010

ACA20011

ACA2016

Description

2 burners with pilot flame - open compartment

2 burners with pilot flame - table top

4 burners with pilot flame - open compartment

4 burners with pilot flame - table top

6 burners with pilot flame - open compartment

6 burners with pilot flame - table top

4 burners with pilot flame - 1 gas oven GN 1/1 ventilated

4 burners with pilot flame - 1 gas oven GN 2/1

4 burners with pilot flame - 1 electric oven GN 1/1 ventilated

4 burners with pilot flame - 1 electric oven GN 2/1

6 burners - 1 gas oven GN 1/1 ventilated - neutral cabinet

6 burners with pilot flame - 1 gas oven GN 2/1

6 burners with pilot flame - 1 gas oven MAXI

6 burners with pilot flame - 1 electric oven GN 1/1 ventilated

6 burners - 1 electric oven GN 1/1 ventilated - neutral cabinet

6 burners with pilot flame - 1 electric oven GN 2/1

Dimensions in mm. (LxPxH)

400 x 700 x 900/970

400 x 700 x 270/340

800 x 700 x 900/970

800 x 700 x 270/340

1200 x 700 x 900/970

1200 x 700 x 270/340

800 x 700 x 900/970

1200 x 700 x 900/970

51BQ2896

0051

TIPO/TYPE

CAT/KAT GAS/GAZ G30 G31 G20 G25

II2H3B/P P mbar 30 30 20 -

II2H3+ P mbar 30 37 20

II2H3+ P mbar 28 37 20 -

25II2L3B/P P mbar 30 30

II2ELL3B/P P mbar 50 50 20 20

II2E+3+ P mbar 28 37 20 25

II2H3B/P P mbar 50 50 20 -

I2E P mbar - - 20 -

--II2H3B/P P mbar 30 30

II2H3+ P mbar 28 37 20 -

I3B/P P mbar 30 30

I3+ P mbar 28 37

SE FI DK CZ SK SI

IT CH PT

ES IE GB GR

FR BE

AT CH

EE LV LT

NO MT CY IS HU

MOD.

ART.

Qn kW

m3/h

MADE IN ITALY

Predisposto a gas: - Gas preset: - Prevu pour gaz:

Eingestelt für Gas: - Preparado para gas: -

Geschuckt voor:

V AC kW Hz

THE APPLIANCE MUST BE CONNECTED IN COMPLIANCE WITH THE LAWS IN FORCE

AND INSTALLED IN A WELL-VENTILATED ROOM. READ THE INSTRUCTION MANUALS

BEFORE INSTALLING AND USING THE APPLIANCE.

THE APPLIANCE MUST BE INSTALLED BY QUALIFIED PERSONNEL.

G30/G31 28/37 mbar

G20 20 mbar

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3 - TECHNICAL DATA

Model Description

4 burners - 1 gas oven GN 1/1 ventilated

4 burners with pilot flame - 1 gas oven GN 1/1 ventilated

6 burners - 1 gas oven GN 1/1 ventilated

6 burners with pilot flame - 1 gas oven GN 1/1 ventilated

4 burners - 1 electric oven GN 1/1 ventilated

4 burners with pilot flame - 1 electric oven GN 1/1 ventilated

6 burners - 1 electric oven GN 1/1 ventilated

6 burners with pilot flame - 1 electric oven GN 1/1 ventilated

Work surface on MAXI gas oven

Dimensions in mm.

(LxPxH)

800 x 650 x 875

1200 x 650 x 875

800 x 650 x 875

1200 x 650 x 875

1400 x 700 x 875

51BQ2896

Primary air distance “A”

Methane gas G20

Liquid gas G30/G31

TABLE 1

Model

Category

Construction type

Air necessary for combustion

Nominal thermal power

Minimum thermal power

Overall thermal power (gas)

Connection pressure

Methane gas 2H

Liquid gas 3+

Gas connection values

Methane gas 2H

Liquid gas 3+

Nozzles Ø 1/100 mm

Main burner

G20

G30/G31

(HuB = 9.45 kWh/m3) in m3/h

(HuB = 12.87 kWh/kg) in kg/h

Nominal thermal power

Minimal thermal capacity

Nominal thermal power

Minimal thermal capacity

G20

G30/31

20 mbar

28/37 mbar

II2H3+

m3/h

No. of nozzles, pilot burner

G20

G30/G31

Open

Gas oven

MAXI

12.0

270

170

Electrical data Electric oven power:

GN 2/1 - 5.9 kW

GN 1/1 - 2.5 kW

Voltage:

V AC 400 3N 50 Hz / AC 230 3 50 Hz

AC 230 50 Hz

No. of cables per section:

5 x 2.5 mm2 / 4 x 2.5 mm2

3 x 1.5 mm2

Open

Ø 120

6.0

1.8

185

Adjustable

125

Open

Ø 120

7.8

2.9

200

Adjustable

135

Open

Gas oven

GN 1/1

7.5

3.6

0.75

155

Adjustable

100

Gas oven

GN 2/1

7.8

215

140

Hour consumption

G20

m3/h

G25

m3/h

G30/G31

kg/h

ACA20001 • ACJ00001

ACA20002 • ACA20006 • ACA20007 • ACJ00002

ACA20011

ACA20003 • ACA20010 • ACA2016 • ACJ00003

ACA20004

ACA20005

ACA20008

ACA20009

ACA20012

14.2

28.4

43.2

44.4

32.0

35.6

46.8

52.2

56.4

1,50

3,00

4,57

4,70

3,39

3,77

4,95

5,52

5,97

1,11

2,22

3,38

3,47

2,50

2,79

3,66

4,09

4,41

0.635

0.470

0.825

0.611

0.381

0.282

0.825

0.611

1.270

0.939

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4 - INSTALLATION INSTRUCTIONS

4.1 Safety rules

• Only a local gas utility technician is authorized to carry out gas

installations and connections. The statutory regulations (applied

in Germany VDE, Austria ÖVE, Switzerland SEV, etc.) and connec-

tion conditions performed by the gas utility must be strictly

observed.

• Connection to a power balance system for the installation in a

wall is provided for through a connection point. Adhere to cur-

rent local legal requirements for connection.

• Please note the electrical diagram! Compare the wiring diagram

number on the data plate of the appliance with the one shown

on the electrical diagram.

• Do not bend, crush or damage the cables against sharp corners.

• Lay the cables so as to avoid contact with extremely hot surfaces.

• The cable – which is totally sheathed – must be led inside the

appliance through the cable clamp and cable raceway installed

on the appliance.

• Ventilation system installation can be carried only by expert per-

sonnel.

• If the appliance is to be installed near walls, dividing walls,

kitchen equipment or decorative panelling, these should be in

non-inflammable material. If not, all appliances must be coated

with thermal-insulation fireproof material. Make sure that all fire

prevention standards and safety precautions are strictly adhered

to.

4.2 Structure, equipment and safety devices

of the unit

Robust steel frame, with 4 height adjustable feet.

18/10 chrome-nickel steel outer panelling.

4.2.1 Cooking zone

• Burner with stabilized flame.

• Gas cocks with safety and adjustable from maximum to minimum.

• Thermoelectric ignition safety.

• Enamelled cast-iron pan supports.

• The bodies of the burners and the venturi tubes are made of cast

iron, while the lid is brass.

• 18/10 chrome-nickel steel cooking top.

• Knobs in thermosetting material.

4.2.2 Oven

The cooking chamber is made of stainless steel.

The runners for the pans are made of steel or chromed rod iron.

The pull-out grill i sin chromed rod-iron.

The door, with double wall and thermal insulation, is equipped with

an insulated handle and a hinge with balanced spring.

The insulation of the cooking chamber is fibreglass.

Gas version GN 2/1 and MAXI

The tubular burners are in chromed steel and are resistant to ther-

mal and mechanical stress.

Gas is supplied through a safety valve with a thermostat.

The main burner is switched on from a pilot burner with a fixed noz-

zle. It is also supplied with a thermoelectric ignition safety

with thermocouple connected to the pilot burner. The burner has a

piezo ignition.

The adjustment of the oven temperature, which can be varied

between 160 and 300° C, is made with the thermostat.

The bottom of the oven, in cast iron with reinforced ribs (for GN 2/1)

and steel (for MAXI), is in two pieces.

The smoke collector is in aluminised sheet metal and the protection

grill is in enamelled cast iron.

Gas version GN 1/1 ventilated

The tubular burners are in stainless steel and are resistant to ther-

mal and mechanical stress.

Gas is supplied through a safety valve with a thermostat and a safe-

ty thermocouple.

The ignition of the main burner takes place by means of an AT

transformer.

The adjustment of the oven temperature, which can be varied

between 160 and 300° C, is made with the thermostat.

The bottom of the oven is made of stainless steel.

The smoke collector is in aluminised sheet metal and the protection

grill is in enamelled cast iron.

Electric version GN 2/1

The heating elements are in the top (upper heat) and under the

bottom (lower heat).

Temperature adjustment between 50 and 300° C is made by a ther-

mostat connected to a tri-polar switch.

It is possible to turn on the upper and lower heating elements sepa-

rately or at the same time.

Indicator lights show when voltage is supplied to the appliance (see

Fig. 4A).

The cooking chamber is made of stainless steel.

The upper heating elements are visible (grill), while the lower ones

are covered by a sheet of stainless steel.

Electric version GN 1/1 ventilated

The heating elements are in the top (upper heat), under the bottom

(lower heat), and in the rear around the fan (convection).

The upper heating elements are visible (grill), while the lower ones

are covered by stainless steel panels.

Temperature adjustment between 50 and 300° C is made by a ther-

mostat connected to a switch.

The use of a 9-position commutator makes it possible to light the

heating elements separately or at the same time with ventilation or

in static mode.

The lighting of the heating elements is indicated by 2 indicator

lights (see fig. 4B).

4.2.3 Neutral cabinet

In models ACA20008, ACA20009, ACA20010 and ACA20011 a neu-

tral cabinet with a door alongside the oven is standard.

4.3 Assembly

4.3.1 Installation premises

The appliance should be installed in a well-ventilated room, and if

possible under a range hood (check current regulations).

The appliance can be installed on its own or with other similar

equipment.

If the appliance is to be installed near inflammable walls, a minimum

distance of 150 mm around the sides and back should be allowed.

If this distance cannot be obtained, take proper heat-protection

action such as fitting tiles or thermal radiation protection material

to the walls.

Before connecting the appliance to the gas supply, check on the

data plate that the appliance is suitable and type-tested for the

type of gas available.

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5.1 Preparation and Start-up

Before starting up the appliance, remove the protective wrapping.

Then carefully clean the working surface and the external parts with

lukewarm water and detergent, using a damp rag to remove all traces

of anti-rust material applied in the factory, then dry with a clean cloth.

5.1.1 Start-up

Before starting up the appliance, check that its specifications (cate-

gory and type of gas used) match those of the family and group of

the gas available locally.

If not, it is necessary to adapt the appliance to the gas family or

group required (see paragraph “Conversion and adjustment”).

To start up the appliance, see the instructions for regular use.

5.1.2 Check of power

The appliances must be used with the specific nozzles for the nomi-

nal power.

The power may be:

• the nominal power indicated on the data plate of the appliance;

• the reduced capacity power.

These nozzles are shown in table 1 “Technical data”.

Nominal power is also obtained in respect of the supply pressure:

• from 15 to 22.5 mbar for gases of the second family (G20/methane)

• from 25 to 45 mbar for gases of the 3rd family

(G30/propane, G31/butane)

The appliance shall not be operated outside the above-mentioned

pressure ranges.

To adjust power with reduced capacity, use the data in table 1.

If you wish to further check the nominal power, you may do so by

using a gas meter according to the so-called "volumetric method".

A simple inspection is usually enough to check if nozzles are func-

tioning correctly.

5.1.3 Checking the input pressure (Fig. 1)

Input pressure should be measured using a fluid measuring gauge

(e.g. a gooseneck pipe, min. resolution 0.1 mbar).

Remove lock screw (22) from the pressure intake tube and connect the

gauge hose: once measurement is complete, replace the screw (22).

4 - INSTALLATION INSTRUCTIONS

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5 - SET-UP FOR OPERATION

If the type of gas indicated on the data plate of the appliance does

not correspond to the gas which is present, refer to the paragraph

"Conversion and adaptation".

4.3.2 Statutory regulations and technical requirements

During installation of the appliance, the following regulations must

be adhered to:

• Relevant legal directives;

• Local building and combustion regulations;

• "Technical rules for gas systems" worksheet;

• "Technical rules for liquid gas" worksheet;

• “Gas installations in industrial kitchens” worksheet;

• Relative accident prevention standards;

• Local gas utility regulations.

• Local building and fire codes.

4.3.3 Installation

Assembly, installation and maintenance, i.e.:

• assembly, gas connection, check of power, conversion or adapta-

tion and start-up;

Ask for approval from the local gas company.

4.3.4 Installation operations

To level the appliance correctly, adjust the height of the feet.

4.3.5 Gas connection

The R 1/2” gas connection of the appliance to the gas pipeline can

either be permanently fixed to the mains or made detachable using

an approved cock.

If hoses are used, they must be in stainless steel and in compliance

with the DIN 3383, part 1 or DIN 3384 regulations.

After completing gas connection, check for leaks using a special

leak-detector spray.

4.3.6 Smoke extraction

These kitchens are type A appliances, thus no smoke extraction sys-

tem is required.

For the ventilation of the room where the appliance is installed,

refer to related legislation.

4.3.7 Electrical connection

Before connecting the unit to the mains, check that:

• The mains voltage corresponds to the values shown on the data

plate;

• The earth is in working order;

• The power cord is suitable to the electrical input of the appli-

ance (see table 1 on page 10/11).

Also, up the line from the unit, there must be a device with contact

opening of at least 3 mm which makes it possible to disconnect the

appliance in omnipolar mode.

To this end, for example, safety contactors may be used.

The omnipolar switch must be located near the appliance and be

readily accessible.

The power cord must be approved and have a section which is suit-

able for the appliance.

The cord must be at least type H07 RN-F.

4.3.8 Equipotential

The appliance must be hooked up to a unipotential system. The

required terminal is located near the cord inlet.

It is marked by a tag with a symbol .

5 - SET-UP FOR OPERATION

5.1.4 Power check with volumetric method

Using a gas meter and a stopwatch, you can read the volume of gas

output per time unit. The correct volume corresponds to the value

"E" expressed in litres/hour (l/h) or litre/minute (l/min).

The following formula is used to calculate the value of “E”:

It is important measure the power when the appliance is in standby

status.

The calorific power value can be requested from the local gas company.

The nominal power and the minimum power with respect to the

nominal pressure are obtained by consulting the table for the

adjustment of the gas passage (table 1).

WARNING

There is no pre-adjustment device for the nominal

power.

5.1.5 Power check for operation with liquid gas

Check if the type of nozzles used meet manufacturer requirements.

Check that the pressure reducer installed in the system has an outlet

pressure which is compliant with paragraph 5.1.2 "Check of power"

(can be checked on the data plate of the appliance or by measuring

the pressure).

E = Power

Operating calorific value

5.1.6 Check of pilot flame

For proper regulation, the pilot flame must surround the thermo-

couple and it must have a perfect appearance. Otherwise, adjust the

air flow to the pilot.

5.1.7 Checking the primary air

Both the oven and the open flames are equipped with primary air

adjustment.

Air volume flow is correct when there is sufficient protection

against the flame rising when the burner is cold or in case of flash-

back when the burner is hot.

5.1.8 Operation Control

• Start the appliance in accordance with the instructions;

• Check that the appliance does not have any leaks by using a

leak-detecting spray.

• Check ignition and that flame on the main burner lights proper-

ly and is correctly formed, even on low;

• For oven GN 1/1 (fig. 3B), after lighting (par. 6.3.3), turn the

knob to the minimum (spark) and check that the burner is lit

along its entire length with flames at the lowest possible level.

Adjustments can be made by turning screw (7).

• Check that the pilot flames work properly.

• Copy the setup values on the data plate and place it in a suitable

spot.

• A servicing and maintenance contract is recommended.

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Fig. 1

5 - SET-UP FOR OPERATION

064_03 - GAS KITCHENS

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Fig. 2B

11 12

13 17

Fig. 2A

Fig. 2C

5 - SET-UP FOR OPERATION

5.1.9 Operator training

• Explain and show the user how the machine works according to

the instructions, and hand him this manual.

• Remind the user that any structural alterations or any building

modification or renovation may affect the combustion air supply,

thus requiring a second operation check.

5.1.10 Conversion and adjustment

To change over form one kind of gas to another, for example from

methane to liquid gas, or to another type of gas, the use of suitable

nozzles for the main burner is required, in accordance with the table

"TECHNICAL DATA".

The nozzles of the main burners and pilot for different types of gas,

marked with the relative diameter in hundredths of mm, are in an

envelope which is provided with the appliance. After transforma-

tion or adaptation, carry out operating checks as described in para-

graph 5.1.8, "Operation control."

5.1.11 Replacing burner nozzles (Fig. 1)

To replace the nozzle (1): remove the grill, the burner cover, the

burner body and the tray of the top.

Then unscrew the screws (2) which fasten the primary air bushing

and replace the nozzle (1). See the table "TECHNICAL DATA".

Once the suitable nozzle has been installed, adjust the distance of

the primary air and fasten the bushing with the appropriate screw.

See the table "TECHNICAL DATA".

5.1.12 Setting reduced capacity power (Fig. 1)

The minimum setting screw (5) should be adjusted as follows:

• for operation with LPG it should be screwed all the way down;

• for operation with methane, use the gas flow table to check the

value in l/min with respect to the operating alorific value (meas-

urement in accordance with the volumetric method). Start the

appliance in accordance with the instructions. Turn the knob to

the minimum position and use screw (5) to adjust the flow (clock-

wise = flow reduction; conter-clockwise = flow increase).

5.1.13 Replacement of pilot nozzle, open flames (Fig. 1)

Remove the grill, the flame separator and the pilot body. Loosen the

screw that holds the pilot to the burner and lift it to a more conven-

ient position. Loosen the nut (11) and extract the bicone (13) and

the injector (12). Replace the injector. See the table "TECHNICAL

DATA" and re-assemble, performing the steps in reverse order.

5.1.14 Replacement of pilot nozzle for gas oven GN 2/1

(Fig. 2A)

Remove the front/lower panel by removing the fastening screws.

Remove the closure (11). Use a screwdriver to unscrew and replace

the nozzle (12) (see table, "TECHNICAL DATA").

When finished, replace the closing screw (11) and the relative seal (13).

5.1.15 Replacement of pilot nozzle for gas oven MAXI

(Fig. 2C)

After opening the oven door, remove the protection from the nozzle

zone, remove the nut (11), slide out the bicone (13) and the injector (12).

Replace the injector (12), see the table "TECHNICAL DATA", and

replace all parts in reverse order.

5.1.16 Replacement of pilot nozzle for gas oven GN 2/1

(Fig. 2A)

Remove the lower panel as previously described. Remove the fas-

tening screw (2) of the primary air bushing (4) and push the bushing

into the venturi tube. The nozzle (3) is now easily accessible.

After substituting the nozzle based on the type of gas and the tech-

nical data, reassemble everything and adjust the distance "A" of the

primary air. See the table "TECHNICAL DATA".

5.1.17 Replacement of nozzle of gas oven GN 1/1 (Fig.

2B) and gas oven MAXI (Fig. 2C)

After opening the door, remove the grill, the grill supports and the

stainless steel bottom, then unscrew the protection form the nozzle

zone.

Remove the air adjustment by unscrewing screw (2). The nozzle is

now accessible. Replace it with one that is suitable for the type of

gas to be used. See the table "TECHNICAL DATA". After replace-

ment, reassemble everything and perform air adjustment (see the

table "TECHNICAL DATA").

5.2 Maintenance

Attention! Before doing any repair or maintenance

work, unplug the appliance.

The following maintenance program should be carried out at least

once a year:

• Check that all the safety and adjustment devices are working

properly;

• Check that the burners are working properly with regard to:

- ignition

- combustion safety;

Check functioning of the appliance as described in paragraph

"Operation Control";

If it should be necessary to clean the open flame burners, proceed

as follows:

• Clean the grills, covers and bodies of the burners;

• Clean the parts with water and detergent and an appropriate

tool. Rinse and dry.

When reassembling the parts, make sure you place them back in the

right position.

If it is necessary to clean the oven burner (18) (Fig. 2A/2B/2C), pro-

ceed as follows:

• Loosen the screw (2), run the air adjustment into the venturi

tube and remove it, unscrew the injector (3) and the nut or

screw (9).

• Unscrew the fastening screw (19) (Fig. 2A) of the burner and

remove it;

• Carefully clean all the holes of the burner with the aid of a tip

of a suitable size;

• Check that the smoke discharge is clear.

• Reinstall everything in reverse order.

5.3 Replacing parts

All parts must be replaced by authorized technicians

only!

To replace the following parts first remove all the control knobs and

control panel (after loosening the fixing screws), then extract the

ignition wire.

5.3.1 Open flame gas valve (Fig. 1 – Pos. 4)

Loosen the fitting of the pipes (6) and (9) of the gas and of the

thermocouple (8), loosen the fitting (7) for the fastening of the

valve on the ramp and replace the piece.

5.3.2 Open flame thermocouple (Fig. 1 – Pos. 14)

Loosen the nut (8) for fastening the thermocouple on the valve and

on the burner (17) and replace the piece (14).

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5 - SET-UP FOR OPERATION

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5.3.3 Plug of gas oven (Fig. 2A/2B - Pos. 6)

Unscrew the fastening screws and remove the lower panel, extract

the ignition wire and unscrew the screws (15). Insert a new plug.

5.3.4 Gas oven gas valve (Fig. 3A/3B)

Loosen the fittings (1,2,3,4 in fig. 3A and 1,2,3 in fig. 3B) which are

for the connection for the gas pipe and the thermocouple, remove

the coil of the thermostat from its place in the cooking chamber and

put in a new piece in the reverse sequence.

5.3.5 Gas oven thermocouple (Fig. 2A/2B/2C and 3)

Unscrew the screws (15) and the nut (16) for fastening the thermo-

couple to the extension of thermocouple and insert the new piece.

5.3.6 Gas oven main burner (Fig. 2A)

Unscrew the fastening screw (19) of the main burner and replace it

with a new one. See also oven burner cleaning, para. 6.7).

After any maintenance or repair work, replace the con-

trol panel and the lower panel.

After replacing gas input components, check operation

again and test for leakage.

5.3.7 Heating elements for electric oven GN 2/1 (fig. 4A)

Unplug the appliance from the electrical mains!

The lower heating element is placed under the bottom. The upper

heating element is attached to the top of the cooking chamber.

To remove the heating elements, loosen the screws that attach them

to the corresponding flange, and pull the heating elements and rela-

tive wires forward.

Use a screwdriver to disconnect the wires and install a new heating

element in reverse order.

5.3.8 Heating elements for electric oven GN 1/1 (Fig. 4B)

Unplug the appliance from the electrical mains!

The lower heating element is placed under the bottom. The upper

heating element is attached to the ceiling of the cooking chamber

and the fan heating element is behind the back wall.

To remove the heating elements, remove either the bottom and/or the

rear wall, loosen the screws which fasten the heating element to the

oven, and pull the heating element and relative wires forward.

Disconnect the wires, and install a new heating element in reverse order.

5.3.9 Fan for electric and gas ovens GN 1/1 (Fig. 4B)

To replace the fan, remove the fan cover rear wall. Remove the fan

(1) by loosening the locking nut (2).

Loosen the bolts (3) that hold the plate (4) which supports the

motor (5) on the oven, pull the plate forward with the motor and

relative wires, remove and re-install in reverse order.

Fig. 3A

MAX

Fig. 3B

6 - INSTRUCTIONS FOR USE

6.1 Safety, cleaning and repair rules

• This appliance is used for the preparation of meals at industri-

al level. Usage and cleaning can be carried only by expert per-

sonnel. Maintenance and repair can be carried out only by

skilled technical personnel.

• These indications must be communicated to all those con-

cerned during internal training.

• Attention! This appliance must be constantly watched over

when being used!

• Grease and overheated oil can catch fire. Use this appliance

only under constant control. Never use water to put out

grease or oil! Cover with a lid, turn off the hot plate and

remove pot from the burner.

• Do not leave the burners running.

• Do not overload the kitchen. For proper use, pots should

not be bigger than the flames.

• Parts of the appliance and attachments exposed to food

must be cleaned with detergents and rinsed thoroughly with

potable water.

• Do not clean the appliance using water jets or steam,

whether direct or pressurized!

• If the room is being cleaned with water/steam jets or high-pres-

sure equipment, it is necessary to switch off the appliance first!

• Before starting to clean the appliance, disconnect from the

mains.

• Do not use inflammable liquid to clean the appliance.

• Repairs may be carried out only by skilled personnel.

• During repairs, the appliance must undergo voltage

omnipolar insulation (local switch, i.e. safety load cut-off

switch).

• Noise emission values of the appliance in operation are below

70dB (A). This value is compulsory according to certain national

safety standards.

WARNING

Attention! The manufacturer declines all responsibility concern-

ing mistakes included in these instructions due to translating or

printing errors: the manufacturer also reserves the right to

change the product as he see fits, though without changing its

essential features. The manufacturer declines all responsibility for

any non-compliance with the provisions contained in this manu-

al.

6.2 Start-up

6.2.1 Lighting and shutting off open flame burner (Fig. 1)

Turn the knob of the desired burner (21) to the spark position. Press all

the way down and use a match or other suitable instrument to light

the pilot burner. Hold the knob down for 15-20 seconds. If, when the

knob is released, the pilot light goes out, repeat the operation.

Then place the knob in the maximum or minimum position so that

the main burner ignites.

To shut off the burner, turn the knob to the right to the spark posi-

tion, and the main burner will go out.

To shut off the pilot light, place the knob in position (0).

6.3 Lighting and shutting of gas ovens (Fig.

3A/3B)

6.3.1 Lighting the pilot for gas ovens GN 2/1 and MAXI

(Fig. 3A)

Press the knob and turn it to the left until the spark position (5).

Hold the knob down and at the same time press the piezo ignition

button (6) repeatedly until the pilot comes on. Ignition of the pilot

can be seen through the hole in the cooking chamber (with the

door open). Hold the knob down for about 15-20 seconds. If, when

the knob is released, the pilot light goes out, repeat the operation.

6.3.2 Lighting the main burner and temperature

adjustment for gas ovens GN 2/1 and MAXI (Fig. 3A)

To light the main burner, turn the knob further to the left until the

desired temperature. The thermostat is marked in positions from 1

to 7. The approximate values for each position are the following:

I valori indicativi della temperatura per ogni posizione sono i seguenti:

Shutdown

To shut off the main burner, turn the knob to the spark position. Only

the pilot flame will remain lit. For complete shutdown, turn the knob

to position (0); in this position the pilot burner also goes out.

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Position 1234567

Degrees °C 160 175 195 220 240 265 290

Fig. 4A

98 6 7

100

150

200

250

300

6 - INSTRUCTIONS FOR USE

6.3.3 Lighting gas oven GN 1/1 (Fig. 3B)

Turn on the switch located up the line from the unit. Press the knob

and turn it to the left until the spark position (5). Hold the knob

down and at the same time press the piezo ignition button (6)

repeatedly. Hold the knob down for 15-20 seconds after the burner

lights, which can be observed through the hole in the bottom of the

cooking chamber (with the door open).

6.3.4 Lighting the main burner and temperature

adjustment in gas oven GN 1/1 (Fig. 3B)

To light the main burner, rotate the knob (5) to a position from 2 to

MAX, considering that the temperatures which can be obtained are

the following:

sono le seguenti:

Shutdown

To shut off the main burner, turn the knob to the spark position. Only

the pilot flame will remain lit. For complete shutdown, turn the knob

to position (0); in this position the pilot burner also goes out.

6.4 Lighting and shutting off electric oven

GN 1/1 (Fig. 4B)

Select the desired type of heating, turn the knob (6), keeping in

mind that the indicator light (8) will remain on in all positions.

This symbol corresponds to internal lights being on without

any type of heating (optional).

Heating takes place both from above (top heating element)

and from below (bottom heating element). This is the tradi-

tional cooking function.

The lower heating element is on (heating element in bottom).

The heat thus flows from the bottom up.

Heating takes place from the top down, since the upper heat-

ing element is on (heating element in top).

In this position the "grill" heating element is on, located in

the upper part of the oven.

As in the previous position with the fan on (convection).

In this position the top heating element (from above) and the

bottom heating element (from below) are on, and at the

same time the fan is in operation (convection).

Position 234567MAX

Degrees °C 160 175 190 210 230 260 300

Convection cooking

In this position, heat is produced by a circular heating ele-

ment located on the back of the oven around the fan.

Defrost function

No heating element is on; only the fan operates in order to

defrost frozen foods quickly.

Turn the knob (7) to choose the desired temperature: indicator light

(9) switches on and off with the operation of the heating elements.

To turn off the oven, turn the to knobs to the zero position.

6.5 Lighting and shutting off electric oven

GN 2/1 (Fig. 4A)

Turn selector (6) right or left to choose the type of cooking, heat

from above and/or below.

In each of these positions, the green indicator light comes on (8 =

voltage supplied to appliance). Turn the knob (7) to the desired

position. The heating elements will come on. Indicator light (9) will

come on when the desired temperature is reached and the heating

elements switch off. To switch off the oven, turn the thermostat

and the selector to the (0) position.

6.6 Turning the appliance off in case of

breakdown

In case of breakdown, shut down the appliance as instructed in the

paragraph "Shutdown". In case of breakdown, close the connecting

cock of the unit. Disconnect the appliance from the power mains.

6.6.1 What to do in case of failure or prolonged peri-

od of disuse

When the appliance is not to be used for a long time, clean thor-

oughly, close the gas cock and switch off any electric power.

In case of malfunctioning or failure, close the gas cock. In case of

malfunction, call the service centre.

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2 1 43

Fig. 4B

98 6 7

100

150

200

250

300

6 - INSTRUCTIONS FOR USE

6.7 Appliance care and frequency of maintenance

Attention! When cleaning, carefully avoid washing the

appliance with direct water jets or high-pressure

water!

Cleaning must be performed when the appliance is cold.

Thorough daily cleaning of the appliance, after disconnecting it, will

keep it in perfect working order and make it last longer. All steel

parts should be cleaned with water and a detergent, using a damp

cloth; do not use abrasive substances or corroding detergents.

Do not use steel wool, which could cause rust to form.

For the same reason, avoid touching the appliance with anything

made of iron. Do not clean with sandpaper and lubricating gel paper.

If absolutely necessary, you may use pumice powder.

If the appliance is extremely dirty, use a synthetic sponge (i.e.

Scotchbrite sponge).

After cleaning the appliance, rinse with clean water and wipe with a

clean cloth.

If the main burner needs cleaning, proceed as follows:

• Remove the pan support, cover, rings and burner crown;

• Clean burner parts with water, soap and a suitable tool, then

rinse and wipe;

• When reassembling the parts, make sure you place them back in

the right position.

All maintenance and repair work must be carried out by authorized

technicians only.

Never clean the appliance with water jets or high-pres-

sure water!

The appliance must be checked at least once a year. For this reason,

a service agreement contract is recommended.

6.8 Recommendations for the treatment of

stainless steel industrial kitchens

6.8.1 Useful information on stainless steel

Industrial kitchens are generally made of stainless steel having the

following material codes:

• 1.4016 or 1.4511 = magnetizable chromed steels

• 1.4301, 1.4401 and 1.4571 = non-magnetizable chromed steels

Chromed steels have favourable thermo-technical characteristics. In

fact, they have less of a tendency to warp due to the effect of heat.

Chrome-nickel steels, instead, have good corrosion resistance features.

Stainless steel corrosion resistance is given by an inactive coat that

builds up on the surface by coming into contact with oxygen.

The oxygen in the air is already enough to build up the inactive coat

that allows automatic removal of anomalies and damage due to

mechanical actions. The inactive coat builds up or re-builds up faster

if the steel comes in contact with running water containing oxygen.

A more powerful effect is given by oxidative acids (nitric acid, oxalic

acid). These acids are used if the steel has undergone strong chemi-

cal stresses, hence generally losing its inactive coat.

The inactive layer can be chemically damaged or jeopardized by

reducing agents (oxygen consumption) if they come in contact with

the steel, concentrated or at high temperatures. These active sub-

stances include for instance:

• saline and sulphurous substances

• chlorides (salts)

• concentrated spices such as mustard, vinegar essences, soup

cubes, kitchen salt solutions, etc.

More damage can be caused by:

• outside rust (i.e. from other components, tools or incipient rust)

• iron particles (i.e. file dust)

• contact with non-ferrous metals (element build up)

• lack of oxygen (i.e. no air inlet, water lacking oxygen).

6.8.2 Warnings and advice for maintenance of stain-

less steel appliances

• Stainless steel equipment surfaces must be kept clean and in

contact with air at all times. When not running, keep appliance

doors open so as to allow air to run through it.

• Regularly remove calcium , grease, starch, and egg white

deposits where rust may build up if there is lack of air. Do not

use bleaching products or products containing chloride. Follow

all indications given by the company concerning special soaps

and cleaning methods to be used for the appliance. If no specific

cleaning recommendations are available, it is necessary, however,

to use detergents having a low chloride content.

After cleaning, remove all soap residues with plenty of clean

water and thoroughly dry the surfaces.

• Minimize contact of stainless steel with concentrated acids,

spices, salts, etc. Even acid vapours coming from cleaning the

tiles favour stainless steel corrosion.

• IParticularly for pots and multiple appliances, it is not recom-

mended to load the cooking chamber only with food having a

high salt content.

It is preferable to cook different food together, i.e. fatty dishes

or vegetables containing acids.

• Avoid damaging the stainless steel surface, in particular with dif-

ferent metals. Residues from other metals help build up the for-

mation of chemical microelements that may cause rust. At any

rate, it is appropriate to avoid contact between iron and steel

since it produces rust. Any contact between stainless steel and

iron (steel wool, pipeline chips, chalybeate waters) can start cor-

rosion phenomena.

As for mechanical cleaning, it is recommended to use only steel

wool or natural, plastic or steel bristle brushes. Steel wool or

brushes with stainless steel can cause rust due to rubbing. Newly

formed rust spots can be removed with slightly abrasive liquid

soaps or fine-grained sand paper. Larger rust spots can be

removed with 2-3% of hot oxalic acid solution. If these cleaning

products do not do the job, a nitric acid (10%) treatment is

required.

Attention! These treatments can be carried out only by

expert personnel according to current regulations.

064_03 - GAS KITCHENS

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03/2006

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