GB/T 4706.50-2024Safety of household and similar electrical appliances - Part 50: Particular requirements for commercial electric dishwashers (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

This document is Part 50 of GB/T 4706 "Safety of Household and Similar Electrical Appliances". GB/T 4706 has been published as follows part.

--- Part 1: General requirements;

--- Part 2: Particular requirements for electric irons;

--- Part 121: Particular requirements for professional ice cream machines.

This document replaces GB 4706.50-2008 "Particular requirements for the safety of household and similar electrical appliances - commercial electric dishwashers" and Compared with GB 4706.50-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Increased the scope of inapplicability of the document (see Chapter 1);

--- Increased the scope of people to whom the document is not applicable (see 7.1);

--- Deleted the requirements for marking symbols (see 7.6 and 7.12 of the 2008 edition);

--- Changed some notes to the text (see 9.101, 10.1, 11.7, 22.6, 22.101, 22.106 and 22.107, 2008 edition 9.101, 10.1, 11.7, 22.6, 22.101, 22.106 and 22.107);

--- Added the composition requirements of the rinse agent (see 15.2);

--- Deleted the abnormal operating requirements for appliances with motors and capacitors in the auxiliary winding circuit (see 2008 edition of 19.7);

--- Added the method of tilting the appliance (see 20.1);

--- Added relevant requirements for programmable electronic circuits (see 22.109);

--- Added the content of software evaluation (see Appendix R);

--- Deleted the contents of detergents and rinse agents (see Appendix AA of the 2008 edition);

--- Added requirements for avoiding siphoning for batch dishwashers and independent rinse compartments (see 8.1 in Appendix BB).

This document is equivalent to IEC 60335-2-58:2017 "Safety of Household and Similar Electrical Appliances Part 2-58.Commercial Electric Dishwashing Machines" Special Requirements for Machines.

The following minimal editorial changes were made to this document.

--- The name of the standard was changed to "Safety of Household and Similar Electrical Appliances Part 50: Particular Requirements for Commercial Electric Dishwashers", and the Coordination of the standards system;

--- Added Note 101 on the total input power test method for appliances with more than one heating element to facilitate testing Correct operation (see 10.1).

Introduction

GB/T 4706 "Safety of Household and Similar Electrical Appliances" adopts most of IEC 60335.On this basis, GB/T 4706 refers to the structure of IEC 60335 is divided into several parts, consisting of general requirements and special requirements. Part 1 is general requirements, and the other parts are for products covered by special requirements, their safety requirements are general requirements used in combination with the special requirements.

The requirements include supplements and modifications to the corresponding clauses in the general requirements to provide complete requirements for each product.

This document is the protection requirements for electrical, mechanical, thermal, fire and radiation risks when the appliance is used normally in accordance with the instructions.

This document also covers abnormal conditions that may occur during use and considers how electromagnetic interference may affect the safe operation of the equipment.

This document has taken into account the requirements specified in GB/T 16895 "Low Voltage Electrical Installations". The appliance is connected to the power supply in accordance with the electrical wiring rules.

requirements are coordinated.

If multiple functions of an appliance involve other parts of GB/T 4706, the other parts shall apply to the appliance separately as long as it is reasonable.

Each function. If applicable, consider the impact of one function on other functions.

When no additional requirements are given in other parts for hazards already included in this document, GB/T 4706.1 applies.

GB/T 4706 is a standard covering appliance safety and takes precedence over general standards/horizontal standards covering the same subject.

This document is used in conjunction with GB/T 4706.1-2024 "Safety of Household and Similar Electrical Appliances Part 1: General Requirements".

The part marked "applicable" in the document indicates that the corresponding clauses in GB/T 4706.1-2024 are applicable to this document; the part marked "replaces" in this document indicates that the corresponding clauses in GB/T 4706.1-2024 are applicable to this document.

For the parts marked as "added" in this document, in addition to complying with the relevant provisions of GB/T 4706.1-2024, the provisions in this document shall prevail.

In addition to the relevant provisions, the additional provisions in this document must also be complied with; the part of this document marked "modified" indicates that in GB/T 4706.1-2024 the corresponding terms shall be modified.

Safety of household and similar electrical appliances Part 50: Particular requirements for commercial electric dishwashers

1 Scope

This chapter of GB/T 4706.1-2024 is replaced by the following.

This document governs the safety of commercial electric dishwashers not intended for household use. Such appliances are used for washing dishes, glassware, Cutlery and similar items, with or without water heating or drying function. For single-phase devices connected to one phase and neutral line the rated voltage of electrical appliances shall not exceed 250V, and that of other appliances shall not exceed 480V.

NOTE 101 These appliances are used in restaurants, canteens, hospitals and commercial establishments such as bakeries and butchers.

Note 102.Examples of instruments include.

---Continuous dishwasher;

---Batch dishwasher;

---Dishwasher.

Annex BB specifies requirements for preventing non-potable water from entering water supplies through siphonage.

The electrical parts of appliances using other forms of energy are also within the scope of this document.

As far as is practical, this document deals with the common hazards posed by these types of appliances.

Note 103.Pay attention to the following.

--- For equipment intended for use exclusively in vehicles, ships or aircraft, additional requirements may be required;

--- The relevant national management departments may impose additional requirements on the equipment;

--- The state has stipulated additional requirements for pressure equipment.

Note 104.This document does not apply to.

--- Apparatus designed for industrial use, such as machines for washing containers for final product packaging in the food industry (e.g. bottle washers) and equipment used in production processes appliance;

--- Sterilizers and washer-disinfectors for processing medical materials (IEC 61010-2-040);

--- Dishwashers that do not form a functional unit, for example, where the conveying device transfers dishes from one independent unit to another;

--- A separately driven conveying mechanism not installed in the appliance;

--- Appliances intended for use in special environments where corrosive or explosive gases (such as dust, steam or methane) are often produced.

2 Normative references

Except for the following contents, this chapter of GB/T 4706.1-2024 applies.

Increase.

ISO 1817 Rubber, vulcanized or thermoplastic - Determination of resistance to liquids Determinationoftheeffectofliquids) Note. GB/T 1690-2010 Test method for resistance of vulcanized rubber or thermoplastic rubber to liquids (ISO 1817:2005, MOD) IEC 60436 Electric dishwashers for household use - Methods of test form achieving the performance) Note. GB/T 20290-2016 Performance test methods for household electric dishwashers (IEC 60436:2012, MOD) IEC 61770 Electric appliances connected to the water supply to avoid siphoning and hose assembly failure watermains-Avoidanceofbacksiphonageandfailureofhose-sets)