Metos 151E Operating instructions

RACK CONVEYOR DISHWASHER

ELECTRICALLY HEATED

STEAM HEATED

TYPE: 151E

Accessories

FS40

Installation and Operation Manual

From S/N: Rev.: 2.2

4.12.2000 Rev. 2.2

3

Dear Customer,

Congratulations on deciding to choose a Metos equipment for your kitchen activities. You

made an excellent choice. We will do our best to make also you a satisfied Metos custom-

er like thousands and thousands of others all over the world.

Please read this manual carefully. You will learn many right, safe and efficient working

methods in order to get the best possible benefit from the equipment. The instructions and

hints in this manual will give you a quick and easy start in using this equipment. You will

note very quickly how nice it is to use the Metos equipment.

All rights are reserved for technical changes.

You will find all the main technical data on the rating plate fixed to the equipment. When

you need service or technical help, please let us know the serial number of the equipment.

This will make it easier to provide you with the correct service. Please write the contact

information of your local Metos service in advance on the lines below.

METOS TEAM

Metos service phone number:...............................................................................................

Contact person:....................................................................................................................

4.12.2000 Rev. 2.2

4

4.12.2000 Rev.

5

1. General .......................................................................................................... 7

1.1 Symbols used in the manual .......................................................................................... 7

1.2 Symbols used on the appliance ...................................................................................... 7

1.3 Checking the relation of the appliance and the manual ................................................. 7

1.4 Rating plate information ................................................................................................ 8

1.5 Staff training .................................................................................................................. 8

2. Safety .............................................................................................................. 9

2.1 Safe use of the appliance ............................................................................................... 9

2.2 Safety instructions in case of malfunction ..................................................................... 9

2.3 Disposal of the appliance ............................................................................................... 9

2.4 Other prohibitions .......................................................................................................... 9

3. Functional description ................................................................................ 10

3.1 Application of the appliance ........................................................................................ 10

3.1.1 Use for other purposes ......................................................................................... 10

3.2 Construction ................................................................................................................ 10

3.3 Control panel .............................................................................................................. 12

4. Operation instructions ............................................................................... 14

4.1 Before use .................................................................................................................... 14

4.1.1 Preparing the operation ........................................................................................ 14

4.2 Operation ..................................................................................................................... 14

4.2.1 Start of dishwashing ............................................................................................ 14

4.2.2 Dishwashing ........................................................................................................ 14

4.3 After use ...................................................................................................................... 15

4.3.1 Cleaning .............................................................................................................. 15

5. Installation ................................................................................................... 17

5.1 General ........................................................................................................................ 17

5.2 Operating conditions ................................................................................................... 17

5.2.1 Lighting ................................................................................................................ 17

5.2.2 Ventilation ........................................................................................................... 17

5.3 Electrical connection ................................................................................................... 18

5.4 Water connections ....................................................................................................... 18

5.5 Drain connection ......................................................................................................... 18

5.6 Steam connection ......................................................................................................... 18

5.7 Measures after installation ........................................................................................... 18

4.12.2000 Rev.

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5.8 First start, test run ........................................................................................................ 19

6. Adjustments ................................................................................................ 20

6.1 Setting the DIP switches .............................................................................................. 20

6.1.1 Setting the machine model .................................................................................. 20

6.1.2 Setting the machine type ..................................................................................... 20

6.1.3 Setting the accessories ....................................................................................... 20

6.1.4 Setting the language to the machine with text panel .......................................... 20

6.2 Adjusting the final rinse ............................................................................................. 21

6.3 Adjusting the reference values ................................................................................... 21

6.4 Controlling the infeed conveyor ................................................................................. 23

6.5 Controlling the dryer .................................................................................................. 23

6.6 Setting the filling memory to zero .............................................................................. 23

7. Troubleshooting .......................................................................................... 24

8. Spare parts .................................................................................................. 27

8.1 Voltage codes .............................................................................................................. 29

8.2 Product codes ............................................................................................................... 29

9. Technical specifications ............................................................................ 101

4.12.2000 Rev. 2.2

General

7

1. General

Carefully read the instructions in this manual as they contain important information re-

garding proper, efficient and safe installation, use and maintenance of the appliance.

Keep this manual in a safe place for eventual use by other operators of the appliance.

The installation of this appliance must be carried out in accordance with the manufactur-

er’s instructions and following local regulations. The connection of the appliance to the

electric and water supply must be carried out by qualified persons only.

Persons using this appliance should be specifically trained in its operation.

Switch off the appliance in case of failure or malfunction. The periodical function checks

requested in the manual must be carried out according to the instructions. Have the appli-

ance serviced by a technically qualified person authorized by the manufacturer and using

original spare parts.

Not complying with the above may put the safety of the appliance in danger.

1.1 Symbols used in the manual

This symbol informs about a situation where a safety risk might be at hand. Given instruc-

tions are mandatory in order to prevent injury.

This symbol informs about the right way to perform in order to prevent bad results, appli-

ance damages or hazardous situations.

This symbol informs about recommendations and hints that help to get the best perform-

ance out of the appliance.

1.2 Symbols used on the appliance

This symbol on a part informs about electrical terminals behind the part. The removal of

the part must be carried out by qualified persons only.

1.3 Checking the relation of the appliance and the manual

The rating plate of the appliance indicates the serial number of the appliance. If the man-

uals are missing, it is possible to order new ones from the manufacturer or the local rep-

resentative. When ordering new manuals it is essential to quote the serial number shown

on the rating plate.

4.12.2000 Rev. 2.2

General

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1.4 Rating plate information

The rating plate of the appliance is located in the lower section of the machine, at either

loading or unloading end. The technical data provided by the rating plate are also shown

in the machine’s circuit diagrams. The field contents are as follows:

1. Machine type

2. Manufacturing number

3. Manufacturing year

4. Sealing class

5. Voltage

6. Number of phases, nollajohdin

7. Frequency

8. Main fuse

9. Motor power

10. Electrical heating power

11. Maximum power

1.5 Staff training

Before taking the machine into use, make sure that the staff receive the requisite informa-

tion for handling and maintenance!

4.12.2000 Rev. 2.2

Safety

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2. Safety

2.1 Safe use of the appliance

Do not touch the interior parts of the washing space while the machine is running. Do not

either operate the machine when the cover plates have been detached.

Pinch risk: The reciprocating movement of the conveyor may cause a risk of squeezing

in the immediate vicinity of the loading and unloading openings, the angle feeder or the

mechanical curves.

2.2 Safety instructions in case of malfunction

In case of electricity breakdown, switch the power off with the main switch.

Check the following:

• Has the appliance been used according to instructions?

• Are all possibly removable parts refitted?

• Is the main switch in the ON position?

• Are the circuit breakers (fuses) of the appliance in the main fuse box in working

order? Ask an authorized person to check the circuit breakers.

• If this does not help, contact an authorized service person.

2.3 Disposal of the appliance

The disposal of the appliance when its economical lifetime has been reached must be car-

ried out in accordance with local rules and regulations. Contact professional personnel

specializing in recycling.

2.4 Other prohibitions

Only use detergents intended for machine dishwashing. Follow the instructions provided

by the detergent supplier.

Use protective gloves or goggles when handling the detergent. Observe the warnings on

the detergent container.

4.12.2000 Rev. 2.2

Functional description

10

3. Functional description

3.1 Application of the appliance

The appliance is designed for washing dishes used in food serving, food preparation and

food storing. A detergent intended for machine dishwashing must be used.

3.1.1 Use for other purposes

Always consult the manufacturer, if you intend to use the appliance for other purposes

than mentioned above.

3.2 Construction

1. Curtains

2. Wash arms

3. Rinse nozzles

4. Door catch

5. Door

6. Tank drain lever

1 2 3

5

6

3

7

8

9

13

12 9 12 11 10

2 3 4

14

4.12.2000 Rev. 2.2

Functional description

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7. Final pump rinse filter

8. Final rinse filter

9. Drain plug

10. Rubber gasket

11. Overflow pipe and drain plug lift shaft

12. Strainer plates

13. Overflow pipe

14. Start switch

4.12.2000 Rev. 2.2

Functional description

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3.3 Control panel

1. Temperature display pre wash (WD-211E, 241E, 331E)

2. Signal light for low water level in corresponding tank

3. Temperature display power wash

4. Push button for wash with automatic stop

5. Door open signal light

6. Signal light for selected wash method

7. Signal light; machine’s overload or stop emergency activated

8. Push button for wash without automatic stop

9. Signal light; infeed / outload conveyor overload or unload table switch activated

15 16 17 18 19

20

4.12.2000 Rev. 2.2

Functional description

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10. Signal light for overloads of pumps and condensor fan

11. Control switch

12. Signal light; final rinse filter (8) blocked

13. Emergency stop push button

14. Temperature display final rinse

15. Circuit board

16. Diagnosis button

17. Push buttons for adjustment of reference values

18. Potentiometer (vacant)

19. DIP switches

20. Potentiometer for infeed conveyor

4.12.2000 Rev. 2.2

Operation instructions

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4. Operation instructions

4.1 Before use

4.1.1 Preparing the operation

• Make sure that the machine has been cleaned and that the water supply valves are

in the OPEN position.

• Put the overflow pipe and the drain plugs in place. Make sure that they are properly

fastened to the lift shaft (11).

• Check the condition of rubber gaskets (10).

• Put the strainers and curtains in place.

• Check the amount of detergent and rinse aid.

• Close the doors.

4.2 Operation

4.2.1 Start of dishwashing

Turn the machine’s control switch (11) to position 1 and wait until the tanks fill and the

water heates up. The filling time is approx. 6-13 minutes. In dishwashers connected to

cold water supply, the filling time is 30 minutes at the maximum. When the temperatures

are clearly visible on the displays (1, 3, 14) the machine is ready for dishwashing.

Push the button AUT. The machine starts and runs for a moment for mixing the detergent.

4.2.2 Dishwashing

Remove loose food residues and rack the dishes.Rack the trays longitudinally to machine.

If GN containers are washed in the machine, they must be placed in a special rack and fed

into the machine longitudinally.

Choose the wash method AUT or MAN.

• AUT = Wash with an automatic stop. The dishwasher starts when a rack is fed in.

The rack remains within the wash zone until the next rack pushes it on. The dish-

washer stops automatically if no new rack is fed in.

• MAN = Wash without an automatic stop. The dishwasher starts immediately. The

MAN position is preferable for heavily soiled wash items. If only one rack is fed,

4.12.2000 Rev. 2.2

Operation instructions

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it stops and is processed in the wash zone for a duration that can be decided by the

operator. The rack will be pushed out of the dishwasher when a new rack is fed in.

We recommend to feed in racks at the following intervals:

approx. 50cm

Increase the distance if the wash items are heavily soiled.

4.3 After use

4.3.1 Cleaning

The temperature of the rinsing water is approx. 85ºC. Do not open the machine doors until

the washing process is completed.

Cleaning: The temperature of wash water in the power wash tank is approx. 60ºC and it

is mixed with detergent. Be careful when emptying and cleaning the tanks. Use protective

gloves.

Use of a pressure washer for cleaning the machine is forbidden.

Do not use steel wool for cleaning the machine. Use of steel wool may cause rust spots on

the machine surfaces. Do not either use detergents that, if not thorougly rinsed from sur-

faces, form foam during the wash process, thus impairing the wash result. Consult your

detergent supplier for the correct type of detergent.

It is not allowed to clean the outside of the machine with a jet of water.

For cleaning the outer surfaces, wiping with a damp cloth will often suffice.

When washing floors, water can splash up from the floor, thus damaging electric compo-

nents, which are not designed to withstand rinsing with water. Special protective covers

should be used to protect the machine from water splashes, if the floor is washed with a

pressure washer.

Daily cleaning

• Turn the control switch (11) to position 0.

• Empty the tanks by pulling the tank drain level (6).

• Clean the tank strainers (12), tanks, curtains and wash nozzles. Clean the final

rinse filter (8). Dry the rubber lists of the doors. The rubber lists are located on the

rear side of the door, in the door’s upper section. Leave the doors open.

• Clean the outer surfaces of the machine with a damp cloth. Do not use steel wool

for cleaning. Use of steel wool may cause rust spots on the machine surfaces.

4.12.2000 Rev. 2.2

Operation instructions

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Basic cleaning of a returning unit equipped with a conveyor

• Stop the conveyor with the stop switch

• Spray the system with non-foaming general cleaning liquid or desinfecting deter-

gent. Your detergent supplier can recommend you the best product for this pur-

pose. The conveyor materials stand up to all normal detergents that are used in

kitchen.

• Let the detergent act for 10-15 minutes or a length of time recommended by the

detergent supplier.

• Clean more dirty places e.g. with a brush.

• Rinse the system thoroughly, don’t rinse electric parts like control boxes and elec-

tric motors.

Follow the dosing and safety instructions given by the detergent supplier.

Weekly cleaning and maintenance when needed

• Wash arms (2): Detach the wash arms and clean them inside. Clean the wash arm

nozzles.

• Rinse nozzles (3): Clean.

• Final pump rinse filter (7): Clean the filter 2-3 times a week or more often depend-

ing on the use of the machine. The filter is located in the final rinse zone, behind

the door in the lower section of the machine. The final rinse tank must be empty

when cleaning the filter. Detach the filter cover by turning it counterclockwise.

Clean the filter and put it carefully back into place.

• Doors (5): The doors can be detached for cleaning. Lift the door to the upper posi-

tion and press the door catch (4) backwards. The door can be completeley lifted

out for cleaning. When the door is put back into place, make sure that the list, on

which the door is placed, is fitted in the groove of the catch (4).

4.12.2000 Rev. 2.2

Installation

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5. Installation

See the technical specifications and the installation drawing.

5.1 General

Electrical, water and steam connections have to be done by an authorized installation

company.

Make sure that the main voltage is the same as indicated in the rating plate of the machine.

Check the tightness of the connections before starting the machine. See also the installa-

tion instructions.

5.2 Operating conditions

5.2.1 Lighting

To get the best possible working conditions, the machine should be placed in a room with

adequate general lighting.

5.2.2 Ventilation

A satisfactory working environment requires adequate ventilation in the dishwashing

room.

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Installation

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5.3 Electrical connection

For details, see the installation drawing and the connection drawing in chapter “Technical

Specifications”.

There is an electrical wiring diagram inside the electric box door (3). Keep this in the elec-

tric box also after installation.

The main switch (2) has been constructed inside the machine. Connect the cable to the ter-

minal board (1). NOTE. In special cases the electrical feed can be drawn from the floor.

In this case, the cable is drawn under the cover plates (13).

Check the correct rotating direction of the pumps in use when the tanks have filled with

water. The rotating direction has to be the same as indicated by the arrow on the pump. If

the rotation direction is wrong, stop the machine and change two phases of the cable in

the terminal board.

5.4 Water connections

The pipe connection pieces are packed inside the machine.

Adjust the machine horizontally with the feet. Connect the cold and warm water feed (4,

5). There are filters inside the pipe connections.The water connections have to be

equipped with stop cocks. In machines where the water connectios are taken from the

floor, warm and cold water connection points are (8, 9).

5.5 Drain connection

The drain connection (10) can be led either to the right or to the left. Connect the drain

pipe to (A) and draw it to the floor gulley so that the pipe ends above the water level. Re-

move the hole cover from the appropriate side of the cover plate (B) and take the drain

pipe trough it.

5.6 Steam connection

If the machine is steam heated, connect pipes for steam and condensation water to the con-

nection point (11).

5.7 Measures after installation

When the tanks have been filled with water, check once more that the machine is standing

horizontally. Close the doors and check that the doors are in straight line.If necessary, ad-

just with the feet.

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Installation

19

5.8 First start, test run

Place the overflow pipe, the drain plugs, the strainer plates and the curtains. Close the

doors.

Make sure that the automatic fuse FU/M in the electric box is on. Turn the control switch

to position ’1’, the tank filling starts.

NOTE! To avoid the burning of boiler heating elements, there is so called filling memory

in the machine which allows you to check if the boilers of the machine are filled or empty.

When the machine is delivered from the factory, the boilers are emptied and the filling

memory is set to zero. When the control switch of the machine is turned to position ’1’,

the tanks and the boilers fill with water. The boilers are filled via the solenoid valve Y02.

When the valve Y02 is open, a red light on the card is lit. If the relay light is not on, the

boilers do not fill and the heating elements may burn. IMMEDIATELY SWITCH OFF

THE MACHINE and set the filling memory to zero. See chapter “Adjusting reference

values” to set the filling memory to zero.

The filling time in the warm water connected machine is appr. 6-13 minutes. The filling

time in the cold water connected machine is 30 minutes at the maximum.

Test the machine with racks, check the temperatures of the tanks and the final rinse. Check

that the machine does not leak from water and detergent connections.

The CE mark is only valid for the machine of original design.

4.12.2000 Rev. 2.2

Adjustments

20

6. Adjustments

6.1 Setting the DIP switches

For correct functioning of the different zones and accessories, the right setting of the DIP

switches according to the machine and accessories has to be ensured. There are 8 pieces

of DIP switches (15) on the card that can be set either to ‘ON or ‘OFF’ position.

6.1.1 Setting the machine model

DIP switch 4 OFF (Warm water connected machine)

DIP switch 4 ON (Cold water connected machine)

6.1.2 Setting the machine type

6.1.3 Setting the accessories

DIP switch 3 ON (Continuous feeding, angle loading table or mechanical curve)

DIP switch 5 ON (Pre rinse zone)

6.1.4 Setting the language to the machine with text panel

DIP switch 6 ON – 7 and 8 OFF: English text

DIP switch 7 ON – 6 and 8 OFF: Dutch text

DIP switch 8 ON – 6 and 7 OFF: Finnish text

DIP switch 6, 7, 8 OFF: Swedish text

DIP switch 6, 7, 8 ON: German text

DIP switch 6,7 ON – 8 OFF: French text

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