Smeg CW 420 User Manual
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Smeg CW 420 User Manual

Smeg CW 420 User Manual

Professional dishwasher
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PROFESSIONAL DISHWASHER

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Summary of Contents for Smeg CW 420

  • Page 1 PROFESSIONAL DISHWASHER...

  • Page 2: Table Of Contents

    CONTENTS PRECAUTIONS FOR SAFETY AND USE ................3 TECHNICAL DATA ......................5 INSTALLATION AND POSITIONING................7 INSTRUCTIONS FOR TECHNICAL STAFF ................. 8 Plumbing hookup ....................8 Electrical connection ....................9 FIRST START-UP......................11 Rinse aid dispensing setting (on models with diaphragm pump with manual setting only) ........................
  • Page 3 - CW 420/430 6.14 Starting the peristaltic pumps – rapid filling of detergent and rinse aid delivery circuit.(if featured) ......................19 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE TECHNICIAN) ......20 INSTRUCTIONS FOR THE USER ................... 22 Control panel ....................... 22 Before washing ....................

  • Page 4: Precautions For Safety And Use

    - CW 420/430 SMEG thanks you for choosing one of its products. Read all the instructions in this manual carefully to become familiar with the right conditions for the proper use of your dishwasher. TECHNICAL INSTRUCTIONS These are intended for the qualified staff who are to install, commission and test the appliance and carry out any servicing and repairs.
  • Page 5 - CW 420/430 THE MANUFACTURER DECLINES ALL RESPONSIBILITY FOR INJURY OR DAMAGE CAUSED BY FAILURE TO COMPLY WITH THE INSTRUCTIONS IN THE MANUAL, BY INCORRECT USE, BY TAMPERING WITH EVEN JUST ONE PART OF THE APPLIANCE AND BY THE USE OF NON-ORIGINAL SPARE PARTS .

  • Page 6: Technical Data

    - CW 420/430 2 TECHNICAL DATA Supply voltage 400V 3N ~ Convertible to single-phase version 230V 1N ~ Frequency Max. power absorption at 400V 3N ~ (3 branches of heating element) Max. power absorption at 230V 1N ~ (2 branches of heating element) Max.
  • Page 7 - CW 420/430 CAVITY DIMENSIONS FOR BUILT-UNDER INSTALLATION APPLIANCE DIMENSIONS AND CONNECTION POSITIONS (**N.B. – VALUE “1000” WITH ASTERISK: max 600 if siphon with valve is used)

  • Page 8: Installation And Positioning

    - CW 420/430 KEY TO LETTERS USED IN DIAGRAM LOWER BACK PANEL FILLER HOSE EARTH TERMINAL ELECTRICITY SUPPLY CABLE PERISTALTIC HOSES DRAIN HOSE 3 INSTALLATION AND POSITIONING INSTALLATION and POSITIONING Bring the dishwasher to the installation site, remove the packaging and check the appliance and components for damage;...

  • Page 9: Instructions For Technical Staff

    - CW 420/430 POSITIONING: Caution: the indoor system and premises in which equipment for institutions is installed must comply with the relevant regulations. The manufacturer declines all liability for direct or indirect injury or damage deriving from failure to comply with these regulations.

  • Page 10: Electrical Connection

    - CW 420/430 4.2 Electrical connection The dishwasher and any additional equipment must be connected to the electrical system by authorised, skilled staff, in accordance with the relevant regulations; also comply with the technical instructions for the connection. The total rated power is stated on the appliance’s technical data plate.
  • Page 11 - CW 420/430 Figure 1 – Appliance electrical system diagram...

  • Page 12: First Start-Up

    - CW 420/430 5 FIRST START-UP First start-up The electrical protection system must undergo a functional test before the appliance is put into operation. The appliance must be installed and/or inspected by qualified staff, who will start it up for the first time and provide the relevant operating instructions.

  • Page 13: Rinse Aid Dispensing Setting (On Models With Diaphragm Pump With Manual Setting Only)

    - CW 420/430 5.1 Rinse aid dispensing setting (on models with diaphragm pump with manual setting only) Note: If peristaltic rinse aid pump is installed see point 6.6 Rinse aid dispensing regulator screw Inspection panel removal screw RB: Rinse aid dispensing regulator screw Adjustments are made using the adjuster screw AS SHOWN.

  • Page 14: Using The Water Softener (On Models With This Feature Only)

    - CW 420/430 5.2 Using the water softener (on models with this feature only) The quantity of lime in the water (which indicates its hardness) causes whitish marks on dry dishes and dishes also tend to lose their shine over time.

  • Page 15: Set-Up

    - CW 420/430 6 SET-UP Set-up During first start-up, the functions/parameters listed below must be set or adjusted: 6.1 Dishwasher parameter modification procedure: Indicator lights showing: off; green; orange; flashing. Access “programming mode” by pressing the button for a few seconds with the appliance on with the door open and the tank empty.
  • Page 16 - CW 420/430 Start-on/start-off Set at “on” to start the cycle when the door is closed. Set at “off” for cycle start after confirmation with the start button Water hardness setting (if featured), on models with softener only tStP on/off “on” = minimum rinsing temperature as set, regardless of intake water temperature.

  • Page 17: Quit " Set-Up " Menu

    - CW 420/430 This submenu and the relative functions can only be accessed with the aid of a password available on SmegTech and only by technical staff. 6.2 Quit “ SET-UP “ menu Wait more than 10 seconds without pressing any button and the appliance quits this menu...

  • Page 18: Detergent Dispensing Setup (If Featured)

    - CW 420/430 6.5 Detergent dispensing setup (if featured) DETERGENT Modify the value of the Delivery time Delivery parameter by pressing quantity (c.c.) * default value (factory preset) 6.6 Rinse aid dispensing setup (if featured) RINSE AID Modify the value of the...

  • Page 19: Regeneration Frequency Setup (Models With Softener)

    - CW 420/430 6.8 Regeneration frequency setup (models with softener) • (Default value: H03; modify the parameter to suit the mains water hardness. • At first use, the salt tank has to be filled. It is subsequently sufficient simply to fill up with regenerating salt when necessary.

  • Page 20: Rinse Aid Pump (Display And If Required Reset During Maintenance) (If Featured)

    - CW 420/430 6.10 Rinse aid pump (display and if required reset during maintenance) (if featured) for 3 seconds. To reset, press 6.11 Detergent pump (display and if required reset during maintenance) (if featured) for 3 seconds. To reset, press 6.12 Energy consumption –...

  • Page 21: Malfunctions Shown On The Display (For The Technician)

    - CW 420/430 lights remain on as long as the pumps are on; bear in mind that the rinse aid peristaltic pump fills the circuit in about 7 minutes, while for the detergent it only takes 2 minutes. So draw only rinse aid from the jerry cans (1 for the rinse aid and the other for the detergent) for the first 5 minutes and then also take in detergent for the last 2.
  • Page 22 - CW 420/430 The problem might occur because water is continually entering the tank (the causes are as for Err5 – see above) If it persists, check in this order: - damaged boiler heating element - contactor failure, - boiler safety thermostat failure,...

  • Page 23: Instructions For The User

    Use only detergents and rinse aids for industrial dishwashers. Do not use detergents intended for hand washing. We recommend the use of Smeg products, specially developed for this dishwasher. When topping up the tanks, take care not to swap the products; this might damage the dishwasher and cause malfunctions.

  • Page 24: First Use Each Day (Tank And Boiler Empty)

    - CW 420/430 Check: Switch on the That there is That the filters are in Turn on the The level of master switch regenerating salt place, the spray arms mains water detergent and (user): the word in the relative rotate, and there are tap (user) “OFF”...

  • Page 25: Changing The Program

    - CW 420/430 Select the program required by pressing . Confirm the program start by pressing and holding it down for 1 second (light L2 changes from green to orange). Cycle in progress, the progress of the cycle is displayed by vertical bars which illuminate in sequence.

  • Page 26: Choosing The Program

    - CW 420/430 change the program by pressing Confirm the program start by pressing and holding it down for 1 second (light L2 changes back to orange). N.B.: During heating of the water in the boiler and tank with the cycle running, the tank heating element and boiler heating element symbols may appear on the display.

  • Page 27: Supplementary Functions

    - CW 420/430 10 SUPPLEMENTARY FUNCTIONS Indicator lights showing: off; green; orange; flashing. To select a supplementary function, when the program required is shown on the display (P1, P2, P3 or P4) press the button. Only one supplementary function can be selected for each program.

  • Page 28: Selecting The "Sanitisation" Function (Only Available In P3)

    - CW 420/430 10.3 Selecting the “sanitisation” function (only available in P3) Increases the program’s washing and rinsing temperatures and duration Press to select the sanitisation function then confirm the program start. N.B.: the supplementary function remains selected until the program is changed or the dishwasher is switched off by pressing the button.
  • Page 29 - CW 420/430 Confirm by pressing ; light L2 turns orange. When pump-out is complete the appliance switches to “OFF” status. After a total pump-out the filters should be cleaned as described above. Never switch the dishwasher off with water in the tank; always pump out first.

  • Page 30: Maintenance And Cleaning

    - CW 420/430 The salt tank is in the bottom of the appliance's tank. After removing the basket, undo the cap and pour the salt in using the funnel supplied. Remove any salt residues around the opening before screwing the cap back on.

  • Page 31: Routine Inspection Of The Spray Arms

    - CW 420/430 Remove the filters (simply lift them out as shown here), taking care that no large residues fall into the sump underneath. Clean them to remove residues and rinse with plenty of water, then put them correctly back in place; do not use sharp or pointed tools.

  • Page 32: Troubleshooting

    - CW 420/430 TROUBLESHOOTING If the system fails to pump out because the drain pump is fouled (as a result of incorrect filter positioning), proceed as follows: Bale out the dishwasher with a basin and disconnect it from the electrical mains.
  • Page 33 - CW 420/430 ensure that the softener is working Limescale in boiler properly (if installed). - Check that the filter of the hose inserted in the rinse aid tank is not fouled. Check container of rinse aid and whether it is suitable for the type of mains water.

  • Page 34: Malfunctions Shown On The Display (For The User)

    - CW 420/430 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE USER) The dishwasher is able to identify a number of malfunctions and show them on the display. If the problem persists after the dishwasher has been switched off and back on, proceed as described...
  • Page 35 For further details of costs of calls from cell phones contact your operator. Our whole product offering can be viewed at: www.smeg-ristorazione.com International customers, please contact your local SMEG distributor. Smeg S.p.A. Via Leonardo da Vinci, 4 - 42016 Guastalla (Reggio Emilia) Tel.

This manual is also suitable for:

Cw 430

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