Nelson SC40A User Manual (English)

Questions and Answers:

C
Chad CollierAug 21, 2025
Why is the Nelson SC40A not starting when switched on?
- A
  Andrea PriceAug 21, 2025
  If your Nelson Washer isn't starting when you turn it on, several factors could be at play. First, check if there's voltage in the electrical system, ensure the main switch is connected, and verify that the fuses are intact. The machine's connecting cable might be damaged and need replacement. Also, inspect the conductors in the control panel terminal board, and tighten them if they're loose. The machine line switch or conductor contacts may be inefficient and require replacement. The door micro might be faulty, so replace it if necessary. Finally, check the connection of the electronic board, and replace the board if necessary.
S
Samuel WilliamsAug 23, 2025
What to do if the Nelson SC40A Washer dishes are not clean?
- C
  catherinegreeneAug 23, 2025
  If dishes are not clean after a wash cycle in your Nelson Washer, consider these possibilities: The electric pump may be faulty or damaged. The detergent might not be suitable for dishwashers, so ensure you're using a product specifically formulated for industrial washing. Also, check that there is enough detergent in the bowl and always adhere to the doses stated on the product technical sheets. The impellers could be obstructed or damaged, requiring cleaning or replacement. Finally, the washing impeller may be blocked, so check and unblock it.
M
Melissa ValenzuelaAug 26, 2025
What to do if water does not enter Nelson Washer?
- K
  Kelli HillAug 26, 2025
  If water isn't entering your Nelson Washer, check the following: Ensure there is water in the water system and the tap is open. Inspect the supply pipe for bends or compressions. Remove and clean the solenoid valve filter if it's dirty. If the solenoid valve coil is broken, replace it. Also, remove and check the small piston of the solenoid valve. Check all connections on the circuit and replace the pressure switch if it's faulty. Finally, check the connection of the electronic board, and replace the board if necessary.
A
adamjensenAug 28, 2025
Why the Nelson SC40A Washer does not rinse?
- M
  Melissa HopkinsAug 28, 2025
  If your Nelson Washer isn't rinsing, check these potential issues: Ensure there's water in the system and the tap is fully open. Inspect the supply pipe for any bends or squeezes. Remove and clean the solenoid valve filter if it's dirty. If the solenoid valve coil is interrupted, replace it. Remove and check the small piston of the solenoid valve. Also, ensure the system pressure is at least 2 bar; if it's lower, consider installing an auxiliary rinse pump.
A
ashlee49Aug 30, 2025
What to do if the Nelson SC40A rinses uninterruptedly?
- S
  Shannon SimmonsAug 30, 2025
  If your Nelson Washer rinses continuously, it could be due to a dirty solenoid valve. Try removing the solenoid valve and cleaning the membrane compensation cutout, replacing the valve if it's sealed. The membrane may also be torn, requiring replacement. Additionally, the small piston might not be moving properly or is blocked, so check and replace the solenoid valve if needed. Finally, check the connection of the electronic board, and replace the board if necessary.
S
Stephanie MooreSep 1, 2025
What causes the water in the boiler and/or bowl of a mono-phase Nelson Washer not to heat up?
- A
  Andrea WarrenSep 2, 2025
  If the water in the boiler or bowl of your mono-phase Nelson Washer isn't heating up, several components could be faulty. The boiler thermostat, bowl thermostat, or safety thermostat might need replacement. The pressure switch contact could be faulty and require replacement. The safety thermostat might have failed to cut in, so reset it and check for the cause of the anomaly. Check the connections and conductors for any faults. The boiler or bowl heating element may also be damaged and require replacement.
K
kaitlin82Sep 4, 2025
What causes the water in the boiler and/or bowl of a tri-phase Nelson SC40A not to heat up?
- B
  Bradley ShahSep 4, 2025
  If the water in the boiler or bowl of your tri-phase Nelson Washer isn't heating up, here are some potential causes: A phase might be missing from the relay coil, so check it. The relay coil itself could be interrupted, also requiring a check. The boiler thermostat or pressure switch contacts might be faulty and need replacement. The relay contacts may be worn out, necessitating replacement of the contactor. Check the connections and conductors for faults. Ensure there isn't a missing phase in the appropriate circuit. The boiler heating element could be damaged and need replacement. Lastly, verify that the connection between the terminals and the heating element is correct.
C
Christopher HartSep 6, 2025
What to do if the electric dispenser of the detergent in Nelson SC40A is faulty?
- J
  John DiazSep 6, 2025
  If the electric detergent dispenser in your Nelson Washer is faulty, the small tube inside the dispenser may be broken, requiring replacement. Alternatively, the small suction tube might be bent or damaged, so check it and replace it if necessary.
G
Glen NelsonSep 8, 2025
What causes the water in the boiler and/or bowl of the Nelson Washer to overheat?
- P
  pcardenasSep 9, 2025
  If the water in the boiler or bowl of your Nelson Washer is overheating, the contacts in the boiler or bowl thermostat might be locked in the “Closed” position, requiring replacement.

Nelson SC40A Specifications

General

Brand	Nelson
Model	SC40A
Category	Washer
Language	English

Summary

Introduction and Warnings

1. INTRODUCTION

General information and disclaimers regarding the manual and manufacturer's policies.

2. WARNINGS

Crucial safety guidelines and manufacturer liability information for proper use and maintenance.

3. COMPLIANCE WITH "EEC" DIRECTIVES

Details the product's adherence to relevant European Economic Community (EEC) directives.

Identification and Technical Characteristics

4. IDENTIFICATION MARKING

Information about the appliance's data plate for identification, service, and usage.

5. TECHNICAL CHARACTERISTICS

Comprehensive specifications and standard equipment details for various dishwasher models.

Installer Instructions and Connections

6. INSTRUCTIONS FOR INSTALLERS

Guidance for qualified personnel performing appliance installation, setup, and initial checks.

6.1 PREPARING FOR INSTALLATION

Procedure for positioning, handling, and preparing the appliance before installation.

6.2 WARNINGS

Specific safety alerts for installers regarding power, water, and operating environment.

6.3 LAWS, TECHNICAL REGULATIONS AND GENERAL RULES

Requirements to follow regarding safety, local laws, and handbook instructions during installation.

6.4 INSTALLATION

Mandate that installation and maintenance must be performed by specialized, qualified personnel.

7. CONNECTING THE WATER SUPPLY

Requirements for water supply connection, including pressure, pipe size, and drain setup.

Electrical, Equipotential, and Adjustments

8. CONNECTING THE ELECTRICAL SUPPLY

Instructions and safety precautions for connecting the appliance to the electrical power supply.

9. EQUIPOTENTIAL CONNECTION

Explanation of equipotential bonding for safety when multiple appliances are interconnected.

10. ADJUSTMENTS AND CHECKS

Procedures for calibrating and verifying appliance settings and components.

10.1 RINSE AID DISPENSER

Details on the rinse aid dispenser's automatic function, calibration, and adjustment for water hardness.

Detergent Dispenser Operations

10.2 LOADING THE DETERGENT

Guidance on how to load detergent, including dosage examples and specific detergent types.

11. DISPENSER FOR LIQUID DETERGENT (optional)

Information on the optional liquid detergent dispenser system.

11.1 START-UP

Steps for initiating and preparing the optional liquid detergent dispenser for use.

11.2 OPERATION

Explanation of how the optional detergent dispenser functions during the wash cycle.

11.3 HOW TO REGULATE THE DETERGENT DISPENSER

Instructions on adjusting the detergent dispenser's timer and settings for optimal dosage.

11.4 EXAMPLE OF HOW TO SET THE AMOUNT OF DETERGENT REQUIRED

Methodology and example calculation for determining the correct detergent quantity.

Functional Checks

12 FUNCTIONAL CHECKS

Comprehensive checks to verify the correct operation of all appliance functions before use.

CHECKING THE WATER LEVEL

Procedure to ensure the water level is within the correct operational range.

CHECKING THE RINSE CYCLE

Verification of proper rotation of rinse arms and functionality of spray nozzles.

CHECKING THE WASH CYCLE

Ensuring wash water distribution and wash arm movement under pressure.

CHECKING THE TEMPERATURE LEVELS

Confirmation that wash and rinse water temperatures meet specified parameters.

CHECKING THE DISPENSER/DISPENSERS

Verification of the correct intake of rinse aid and/or detergent by the dispenser.

CHECKING THE WASH RESULTS

Assessment of cleanliness, drying, and residue removal from crockery after a wash cycle.

User Operations and Controls

13. USER INSTRUCTIONS

Basic instructions for the end-user on operating the appliance.

14. CONTROL AND COMMAND PANELS

Detailed identification and explanation of all buttons, indicators, and controls on the user interface.

Operation and Maintenance Procedures

15. SETTING IN OPERATION

Step-by-step process for initial setup, priming, and starting the dishwasher.

16. DECALCIFICATION AND REGENERATION OF RESINS

Procedure for maintaining the water softener by decalcifying and regenerating its resins.

Drainage and User Advice

17. DRAINAGE PUMP

Instructions for using the drainage pump and emptying the machine's bowl.

18. ADVICE TO USERS

General recommendations and helpful tips for users.

18.1 PERIODIC MAINTENANCE

Guidelines for regular cleaning and maintenance tasks to ensure optimal performance and longevity.

Troubleshooting Common Issues

19. SERVICE MANUAL AND ADVICE FOR TROUBLESHOOTING

Comprehensive guide for diagnosing and resolving common appliance malfunctions.

A BY SETTING THE SWITCHER INTO THE ON POSITION THE MACHINE DOES NOT START

Troubleshooting steps when the machine fails to power on or start.

B THE WATER DOES NOT ENTER THE DISHWASHER

Diagnostic steps for issues preventing water from entering the appliance.

C WATER KEEPS ENTERING THE DISHWASHER

Troubleshooting guide for problems causing continuous water entry into the dishwasher.

D THE WATER IN THE BOILER AND/OR BOWL DOES NOT HEAT UP (MONO-PHASE MACHINE)

Steps to resolve heating failures in single-phase machine configurations.

D1 THE WATER IN THE BOILER AND/OR BOWL DOES NOT HEAT UP (TRI-PHASE MACHINE)

Steps to resolve heating failures in three-phase machine configurations.

E THE WATER IN THE BOILER AND/OR BOWL OVERHEATS

Troubleshooting for situations where the water temperature exceeds normal operating limits.

F THE WASH ELECTRIC PUMP IS FAULTY

Diagnostic and repair steps for a faulty wash electric pump.

G THE MACHINE DOES NOT RINSE

Troubleshooting steps when the rinsing function of the machine is not operational.

H THE MACHINE RINSES UNINTERRUPTEDLY

Troubleshooting for the machine performing continuous rinsing cycles.

I THE DISHES ARE NOT CLEAN

Steps to diagnose and fix issues resulting in unclean dishes after a wash cycle.

J THE WATER DISPENSER OF THE SURFACTANT IS FAULTY

Troubleshooting for malfunctions of the rinse aid (surfactant) dispensing system.

K THE ELECTRIC DISPENSER OF THE DETERGENT IS FAULTY

Diagnostic steps for problems with the automatic detergent dispensing unit.

L THE REGENERATION CYCLE DOES NOT START

Troubleshooting steps when the resin regeneration cycle fails to initiate or complete.

M THE DRAINAGE PUMP IS FAULTY

Steps to diagnose and resolve issues with the appliance's drainage pump.

Dismantling and Declaration

20. DISMANTLING - RECYCLING

Guidelines for the proper dismantling, disposal, and recycling of the appliance.

21. INSTALLATION DIAGRAMS

Visual representations showing installation dimensions and connection points for specific models.

22. DECLARATION OF CONFORMITY

Official statement confirming the product's compliance with relevant industry standards and regulations.

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