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Table of Contents
Related Manuals for Nelson NW511D
Summary of Contents for Nelson NW511D
- Page 1 PROFESSIONAL DISHWASHER ...
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Page 2: Table Of Contents
NW511 CONTENTS PRECAUTIONS FOR SAFETY AND USE ................4 TECHNICAL DATA ......................6 INSTALLATION AND POSITIONING .................8 INSTRUCTIONS FOR TECHNICAL STAFF ................9 Plumbing connection ....................9 Electrical connection ..................... 10 Using the water softener (on models with this feature only) ....... 13 SET‐UP ......................... 15 Display Contents .................... 15 ... - Page 3 NW511 Daily cleaning of filters .................. 27 Routine inspection of the spray arms (twice a week) ........... 27 Lengthy periods out of use ................... 27 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE USER) ........ 30 NELSON 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 warewasher. 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. ...
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Page 4: Precautions For Safety And Use
THE WAREWASHER IS INTENDED FOR PROFESSIONAL USE ONLY AND MUST ONLY BE USED BY AUTHORISED STAFF. IT IS DESIGNED TO WASH TABLEWARE (PLATES, CUPS, BOWLS, OVEN DISHES GLASSES AND CUTLERY) AND SIMILAR ITEMS IN THE RESTAURANT AND INSTITUTIONAL CATERING ... - Page 5 NW511 THE SYMBOL OF THE RUBBISH BIN WITH A BAR ACROSS IT ON THE PRODUCT OR IN THE TECHNICAL DOCUMENTATION INDICATES THAT THIS PRODUCT MUST NOT BE TREATED AS ORDINARY DOMESTIC WASTE BUT MUST BE CONSIGNED TO THE SPECIAL COLLECTION POINT FOR THE RECYCLING OF ELECTRICAL AND ELECTRONIC EQUIPMENT. NEVER PLACE SOLVENTS SUCH AS ALCOHOL OR TURPENTINE, WHICH MIGHT CAUSE AN EXPLOSION, INSIDE THE APPLIANCE. NEVER LOAD DISHES DIRTY WITH ASH, WAX OR PAINTS. NEVER USE THE WAREWASHER OR ANY PART OF IT AS A LADDER, SUPPORT OR STAND FOR PEOPLE, ANIMALS OR ANY OBJECT. LEANING OR SITTING ON THE OPEN DOOR OF THE WAREWASHER MIGHT CAUSE IT TO TIP OVER, PUTTING PEOPLE IN DANGER. NEVER LEAVE THE WAREWASHER DOOR OPEN SINCE PEOPLE MIGHT TRIP OVER IT. DO NOT DRINK ANY WATER LEFT IN THE DISHES OR WAREWASHER AT THE END OF THE WASHING PROGRAM. THE APPLIANCE IS NOT SUITABLE FOR USE BY JUVENILES OR PERSONS WITH REDUCED PHYSICAL, SENSORIAL OR MENTAL CAPACITIES, OR THOSE WITHOUT THE NECESSARY KNOWLEDGE AND EXPERIENCE. SUCH PERSONS MAY ONLY USE THE APPLIANCE UNDER THE SUPERVISION OF A PERSON RESPONSIBLE FOR THEIR SAFETY. 5 ...
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Page 6: Technical Data
NW511 2 TECHNICAL DATA Supply voltage V 400V 3N ~ Supply voltage V Frequency Hz 50 Max. power absorption at 400V 3N ~ kW 5,2 Max. power absorption at 230V 1N ~ kW 3.7 Boiler heating element power at 400V 3N ~ kW 4.5 Boiler heating element power at 230V 1N ~ kW 1,5/3 Tank heating element power kW 0,8 Water intake pressure kPa (bar) 100‐600 (1 ÷ 6) Water intake temperature °C 15°C – 60°C Intake water hardness ... - Page 7 NW511 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) 7 ...
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Page 8: Installation And Positioning
KEY TO LETTERS USED IN DIAGRAM R LOWER BACK PANEL C FILLER HOSE Q EARTH TERMINAL E ELECTRICITY SUPPLY CABLE P PERISTALTIC HOSES S DRAIN HOSE EXTERNAL DISPENSER POWER SUPPLY T CABLE ENTRY POINT 3 INSTALLATION AND POSITIONING INSTALLATION and POSITIONING Bring the WAREWASHER to the installation site, remove the packaging and check the appliance and components for damage; any damage found must be reported to the transporter in writing. The packaging components (plastic bags, expanded polystyrene, nails, etc.) must not be left within reach of children and pets since they are potentially dangerous.. All packaging materials used are environment‐friendly. They can be kept without constituting any hazard, or may be disposed of at a specialist waste disposal centre. The plastic components suitable for recycling are marked as follows: PE polyethylene: external packaging film, bag containing the instructions, protective bags. PP polypropylene: straps. PS expanded polystyrene: corner guards, top of packaging. Wooden and cardboard components can be disposed of in accordance with the relevant regulations. When the product is decommissioned it must not be dumped in the environment; it must be disposed of in accordance with the relevant regulations. All metal parts are in stainless steel and can be removed. The plastic parts are marked with the symbol identifying the material used. ... -
Page 9: Instructions For Technical Staff
Before installation, check that there are no objects or materials in the vicinity which may be damaged by steam or splashes of washing solution, or that any such items are suitably protected. Place the warewasher in the chosen point and remove the protective film. Level the warewasher (with the aid of a spirit level) on its adjustable feet to ensure that it is stable; all other mounting solutions must be approved by the manufacturer. 4 INSTRUCTIONS FOR TECHNICAL STAFF 4.1 Plumbing connection ... -
Page 10: Electrical Connection
Caution: make sure that the intake and drain hoses are not bent, constricted or crushed after installation. When installing the drain hose to a siphon with valve, the maximum height of the drain outlet is reduced to 600 mm. 4.2 Electrical connection The warewasher and any additional equipment must be connected to the electrical system by authorised, skilled staff, in accordance with the relevant regulations; also ... - Page 11 SFIL Filter sensor PD Detergent peristaltic pump FLMT Flowmeter EVF Filler solenoid valve SS Salt sensor PS Drain pump RD Door sensor PLB Boiler pressure switch PR ...
- Page 12 NW511 Figure – Appliance single‐phase electrical system diagram 12 ...
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Page 13: Using The Water Softener (On Models With This Feature Only)
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. Preparing for use (important) The rinse aid dispenser is fitted on all models, the detergent dispenser only on some. If both dispensers are present put the external detergent and rinse aid containers in place and insert the respective intake hoses on the rear of the appliance into them. Red hose: detergent blue hose: rinse aid Before inserting the hoses into the containers, fit the weights (needed to ensure that they always draw in liquid from the bottoms of the ... - Page 14 NW511 The first time the warewasher is used, a litre of water must be poured into the tank with the salt. Whenever the tank is filled, always take care to ensure that the cap is firmly closed. The mixture of water and detergent must not get into the salt tank, as this would impair operation of the regeneration system. ...
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Page 15: Set-Up
NW511 5 SET-UP Set‐up During first start‐up, the functions/parameters listed below must be set or adjusted: A series of operations can be carried out when the warewasher is first installed to customise it to the user's requirements. To modify the parameters, proceed as follows. 5.1 Display Contents The two green digits provide the following information: Appliance off but powered up: all decimal points on both digits Appliance on: Boiler temperature Washing phase: Tank temperature Pause phase: Boiler temperature Rinse phase: Boiler temperature Programming phase: See parameter programming section Error message: See error messages section 5.2 Note on display of temperatures Both the Boiler and the Tank temperatures provide instantaneous readings of the current value picked up by the probe, but due to the thermal inertia of the probe or its seat, wait about 1 minute after the heating element power absorption reading to obtain the real temperature. 5.3 Parameter programming procedure To access the programming menu, proceed as follows: ... -
Page 16: Modifiable Parameters
NW511 5.4 Modifiable parameters This table lists the model choice or cycle and temperature option parameters. F/M ID Description Default Notes M P0 Appliance Type 05 Construction version Do not modify F P1 Appliance Model 05 Do not modify M P2 Boiler temperature 80C Step 1 degree WARNING: The actual boiler temperature depends on whether the connection is single‐phase or three‐phase. With three‐phase connection, do not set more than 85° M P3 Tank temperature 58C Step 1 degree M P4 ... -
Page 17: Adjusting Detergent And Rinse Aid Dispensing
Rinse aid dispensing regulator screw RV Inspection panel removal screw RD: Detergent dispensing regulator screw. RB: Rinse aid dispensing regulator screw (on some models only ) Adjustments are made using the adjuster screw AS Adjustments are made using the adjuster SHOWN. The quantity dispensed is reduced by screw AS SHOWN. The quantity dispensed is turning clockwise and increased by turning reduced by turning anticlockwise and anticlockwise. increased by turning clockwise. It is recommended that periodic monitoring of detergent and rinse aid dispensing; every 15.000 cycles suggested replace the inner peristaltic pipe ... -
Page 18: Adjusting The Regeneration Frequency (Models With Softener Only)
2) Hold down the and keys simultaneously for 6 seconds; H0 appears on the display 3) Use the key to modify the parameter; H0,H1,H2,H3,H4,H5 and H0 will appear on the display in cyclic sequence 4) Press the On Off key to confirm the change and quit programming mode. With values over 60°dF an external water treatment device must be used and the regeneration frequency must be set at H00 5.9 Table of parameters This table shows the relationship between the intake water hardness and the quantity the resins are able to treat; regeneration is required once the appliance has performed the set number of cycles. Regeneration cycle duration: 12 minutes. Hardness (°dH German Hardness (°dF French Resin duration in Setting level ... -
Page 19: Malfunctions Shown On The Display (For The Technician)
NW511 6 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE TECHNICIAN) The warewasher is able to identify a number of malfunctions and show them on the display. If the problem persists after the warewasher has been switched off and back on, proceed as described below: E.1 Boiler temperature probe malfunction Boiler temperature probe disconnected or not working E.2 Tank temperature probe malfunction Tank temperature probe disconnected or not working E.3 Water intake malfunction Water intake not completed in the maximum time allowed Check dynamic pressure in intake system, clean water intake filter. If the problem persists: ‐ tank pressure switch has failed (continuous empty reading) ‐ leak from pipe connected to air trap ... - Page 20 Water not pumped out of tank If the problem persists: ‐ with tank empty: tank pressure switch has failed (continuous full reading) ‐ with tank full: drain pump failure 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 warewasher with a basin and disconnect it from the electrical mains. Unscrew the screw A, release the tang B and lift it. Check that the impeller of the drain pump ...
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Page 21: Instructions For The User
NW511 7 INSTRUCTIONS FOR THE USER 7.1 Control panel On‐off button Total emptying button (tank and boiler) Regeneration key (only if softener is fitted) L1 power on LED L2 pump‐out in progress LED L3 regeneration LED ( flashing: regeneration request ) L4 no salt LED (only if softener is installed) Short cycle key Medium cycle key ... -
Page 22: Before Washing
7.2 Before washing Use only detergents and rinse aids for industrial warewashers. Do not use detergents intended for hand washing. We recommend the use of Nelson products, specially developed for this warewasher. When topping up the detergent and rinse aid containers, take care not to swap the products; this might damage the warewasher and cause malfunctions. Do not mix different detergents; this would damage the dispenser device. Failure to comply with this recommendation leads to forfeiture of the warranty entitlement on the appliance’s water system. Industrial warewasher detergents may cause serious irritation. Comply carefully with the instructions provided by the detergent producer on the pack. CHECK 5. Switch on the 2. The level of 3. That there is 4. That the filters 1. Turn on the master switch detergent and ... -
Page 23: First Use Each Day (Tank And Boiler Empty)
WARNING! If the appliance is connected to cold water, wait at least 30' before moving on to the next phase to give the tank time to reach the correct washing temperature. Load the dishes or glasses and close the door. Select the programme required by pressing one of the three buttons; the LED of the selected program flashes and the other two go out. The cycle starts once the key has been held down for about 2". While washing is in progress the display shows the water temperature in the tank. During rinsing, it shows the boiler temperature. At the end of the program the program LED comes ... -
Page 24: Choosing The Program
Very dirty dishes and cutlery Long 3’ (*) The cycle duration stated above is guaranteed if the appliance is connected to hot water > 50°C <60°C If the warewasher is supplied with cold water, the cycle duration might increase depending on the intake water temperature and the "thermostop" setting. 7.5 Changing the program (not possible once the program has started) If the master switch is not turned off, the appliance sets on the last cycle performed. To ... - Page 25 Resin regeneration + flushing is performed. The pump‐out phase lasts about 15' after which the appliance switches off automatically. Resin regeneration (for models with water softener) Once the number of washing cycles set during installation has been completed, as indicating that the resins will be spent and regeneration is required, the LED above the key flashes even during the cycle. Therefore, during the working day resin regeneration is RECOMMENDED following the procedure described below. ...
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Page 26: Maintenance And Cleaning
Filling up with regenerating salt (for models with water softener) Caution: use only water softening salt, do not use cooking salt. Salt must be added when the LED underneath the symbol shown in the box on the left lights up. Top up with salt when there is no water in the tank to prevent washing water from getting into the water softener device. The salt tank has a capacity of about 1 kg of coarse‐grained salt . 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 ... - Page 27 TOP SPRAY ARMS BOTTOM SPRAY ARMS Clean the outside of the appliance with a damp cloth and neutral soap, rinsing and drying thoroughly. 8.3 Lengthy periods out of use If the warewasher is to be out of use for a fairly long period of time, the detergent and rinse aid dispenser devices must be emptied to prevent crystallisation and damage to the pumps: remove the intake hoses from the detergent and rinse aid containers and place them in a container of clean water, then perform a few wash cycles followed by a complete pump‐out. Finally, turn off the master switch, close the water intake valve and leave the door ajar until the interior is completely dry. The detergent and rinse aid intake hoses must be put back into the containers when the warewasher is returned to service, taking care not to swap them over (red hose = detergent, blue hose = rinse aid). 27 ...
- Page 28 NW511 TROUBLESHOOTING How to deal with any problems without calling the after‐sales service PROBLEM POSSIBLE CAUSE POSSIBLE REMEDY DOES NOT LIGHT L1 Mains power failure Check electrical mains connection. COME ON The warewasher has not yet WASHING PROGRAM DOES Wait for the 3 program lights to finished filling. NOT START come on. Remove spray arms and clean them Spray arm washing holes (9.2 Periodic checks) blocked by dirt or limescale See “Cleaning the filter during the Filter fouled day” Check type and quantity of Too little or unsuitable detergent. detergent or rinse aid ...
- Page 29 NW511 PROBLEM POSSIBLE CAUSE POSSIBLE REMEDY Rinse aid unsuitable or not Check container of rinse aid and being delivered correctly. STAINS ON GLASSES AND whether it is suitable for the type of CUTLERY mains water. If the problem persists, Water hardness above 12°dF or contact the after‐sales service. large amounts of dissolved salts Check that the warewasher drain Drain hose incorrectly WATER IN TANK AFTER hose and rain are unobstructed and positioned or partially PUMP‐OUT the drain is not too high up; see obstructed. connection diagram. Switch thermostop ON. DISHES NOT PROPERLY Low rinsing temperature due to If the problem persists call the after‐ DRIED thermostop OFF sales service ...
- Page 30 Water not pumped out of tank tank) If the problem persists: ‐ with tank empty: tank pressure switch has failed (continuous full reading) ‐ with tank full: drain pump failure 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 warewasher with a basin and disconnect it from the electrical mains. Unscrew the screw A, release the tang B and lift it. Check that the impeller of the drain pump ...
- Page 31 NW511 E.7 Boiler heating malfunction (does not Switch the warewasher off and back on and perform heat up) another cycle; if the problem persists call the after‐ sales service. E.8 Tank heating malfunction (does not Switch the warewasher off and back on and perform heat up) another cycle; if the problem persists call the after‐ sales service. E.9 Microprocessor failure Switch the warewasher off and back on and perform another cycle; if the problem persists call the after‐ sales service. 31 ...
- Page 32 Our Sales Department staff will be able to provide you with information about prices and special offers. Our After‐Sales Department will be able to provide you with guidance about keeping your appliance functioning correctly and put you in touch with your nearest authorised Service Centre. 020 8993 6198 Our whole product offering can be viewed at: www.nelsonwash.co.uk International customers, please contact your local Nelson distributor. Nelson Dish & Glasswashing Machines Unit 1 Rowley Industrial Park Roslin Road Acton LONDON W3 8BH 19.390.2737.00 17/01/12 Manual Ed. ...