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Significance and Use
5.1 The maximum energy input rate test is used to confirm that the dishwasher is operating at the manufacturer's rated input prior to further testing. This test would also indicate any problems with the electric power supply, gas service pressure, or steam supply flow or pressure.
5.2 The tank and booster temperature are verified and water consumption is adjusted to NSF specifications to ensure that the test is applied to a properly functioning dishwasher.
5.3 Because much of a dishwasher's operating period is spent in the idle condition, tank heater and booster idle energy consumption rate is an important part of predicting an end user's energy consumption. The test is run with the door(s) open and with the door(s) closed, so that the energy use of both end-user behaviors can be characterized.
5.4 A washing energy test generates an energy per rack usage. This is useful both as a measure for comparing the energy performance of one dishwasher to another and as a predictor of an end users energy consumption.
5.5 Water-consumption characterization is useful for estimating water and sewage costs associated with dishwashing machine operation.
1.1 This test method covers the evaluation of the energy and water consumption of single-rack, door-type commercial dishwashers (hereafter referred to as dishwashers). Dishwashers may have a remote or self-contained booster heater. This test method does not address cleaning or sanitizing performance.
1.2 This test method is applicable to both hot water sanitizing and chemical sanitizing stationary rack machines, which includes undercounter single rack machines, upright door-type machines, pot, pan, and utensil machines, fresh water rinse machines, and fill-and-dump machines. Dishwasher tank heaters are evaluated separately from the booster heater.
1.3 The following procedures are included in this test method:
1.3.1 Procedures to Confirm Dishwasher is Operating Properly Prior to Performance Testing:
126.96.36.199 Maximum energy input rate of the tank heaters (see ).
188.8.131.52 Maximum energy input rate of the booster heater, if applicable (see ).
184.108.40.206 Water consumption calibration (see ).
220.127.116.11 Booster temperature calibration, if applicable (see ).
18.104.22.168 Tank temperature calibration (see ).
1.3.2 Energy Usage and Cycle Rate Performance Tests:
22.214.171.124 Washing energy test ( ).
126.96.36.199 Idle energy rate (door(s) open and door(s) closed) (see ).
1.4 The values stated in inch-pound units are to be regarded as standard. The SI units given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3588 Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
F857 Specification for Hot Water and Chemical Sanitizing Commercial Dishwashing Machines, Stationary Rack Type
F861 Specification for Commercial Dishwashing Racks
F953 Specification for Commercial Dishwashing Machines (Stationary Rack, Dump Type) Chemical Sanitizing
NSF StandardsNSF/ANSI 170 Glossary of Foodservice Terms NSF/ANSI 3 Commercial Warewashing Equipment
ICS Number Code 97.040.40 (Dishwashers)
ASTM F1696-14, Standard Test Method for Energy Performance of Single-Rack, Door-Type Commercial Dishwashing Machines, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top