ASTM F858-24
Standard Specification for Hot Water Sanitizing Commercial Dishwashing Machines, Single Tank, Conveyor Rack Type

Standard No.

ASTM F858-24

Release Date

2024

Published By

American Society for Testing and Materials (ASTM)  US  /  ASTM

Latest

ASTM F858-24

Introduction

Analysis of core technical requirements of the standard

Commercial single-slot conveyor dishwashers must meet the following key technical indicators:

Technical dimensions	Type I	Type II	Test method
Feeding direction	Right-side feeding	Left-side feeding	Visual inspection
Heating method	Style 1 Steam heating (20-35psi) Style 2 Electric heating Style 3 Gas heating		F1920
Processing Capacity	Group A: 162 racks/hour	Group C: 194 racks/hour	NSF/ANSI 3

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Key Material Specifications

The standard clearly defines the classification requirements for corrosion-resistant materials:

• 300 series stainless steel: used for core components such as spray components and rails
• Nickel-copper alloy (B127): suitable for high temperature and high pressure environments
• Plastic materials: must pass NSF/ANSI 51 food contact certification

Typical case: A certain brand of dishwasher uses

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Hygienic performance requirements

The final rinse temperature must reach 180°F(82.2°C) or above. The standard stipulates three heating schemes:

1. Steam booster: must be equipped with automatic temperature control device
2. Electric heater: requires UL 1453 certification
3. Gas heating: requires safety flameout protection

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Certification implementation path

Manufacturers must simultaneously meet the three major certification systems:

Certification type	Standard basis	Key indicators
NSF certification	NSF/ANSI 3	Material safety and hygienic performance
UL Certification	UL 921	Electrical Safety, Gas Safety
OSHA Compliance	29 CFR 1910	Noise ≤80dB

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Standard Evolution Analysis

Main Revisions Compared with the 2018 Edition:

• Added NSF/ANSI 51 Specific Requirements for Plastic Parts
• Strengthened Energy Performance Test (Quoting F1920 Method)
• Detailed Low Water Level Protection Specifications for Three Heating Systems

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Procurement Implementation Recommendations

The bidding documents should clearly state:

1. Specific type/style/class combination (e.g. Type II-Style 1 Class B)
2. Whether an automatic detergent dosing system is required (Clause 7.15)
3. Requirement of an energy consumption curve chart (Clause 12.3)