PlateScrape Plate Pre-Scrapper Test Report Application of ASTM Standard Test Method F2324-03 September 2016 Prepared by: Denis Livchak Fisher-Nickel, Inc. Contributors: Andre Hookfin Fisher-Nickel, Inc. Prepared for: P.S. Creations 10580 San Marcos Road Atascadero, CA 93442 Fisher-Nickel, Inc. All rights reserved. 2016 The information generated in this report is based on data generated at the PG&E Food Service Technology Center (FSTC)
Policy on the Use of Food Service Technology Center Test Results and Other Related Information Fisher-Nickel, Inc. and the FSTC do not endorse particular products or services from any specific manufacturer or service provider. The FSTC is strongly committed to testing foodservice equipment using the best available scientific techniques and instrumentation. The FSTC is neutral as to fuel and energy source. It does not, in any way, encourage or promote the use of any fuel or energy source nor does it endorse any of the equipment tested at the FSTC. FSTC test results are made available to the general public through technical research reports and publications and are protected under U.S. and international copyright laws. Disclaimer Copyright 2016 Fisher-Nickel, Inc. (FNI). All rights reserved. Reproduction or distribution of the whole or any part of the contents of this document without written permission of FNI is prohibited. Results relate only to the item(s) tested. Neither Fisher-Nickel, Inc. nor Pacific Gas & Electric (PG&E) or any of their employees, make any warranty, expressed or implied, or assume any legal liability of responsibility for the accuracy, completeness, or usefulness of any data, information, method, product or process disclosed in this document, or represents that its use will not infringe any privatelyowned rights, including but not limited to, patents, trademarks, or copyrights. Reference to specific products or manufacturers is not an endorsement of that product or manufacturer by Fisher-Nickel, Inc. or PG&E. In no event will Fisher-Nickel, Inc. or PG&E be liable for any special, incidental, consequential, indirect, or similar damages, including but not limited to lost profits, lost market share, lost savings, lost data, increased cost of production, or any other damages arising out of the use of the data or the interpretation of the data presented in this report. Legal Notice This report was prepared by Fisher-Nickel, Inc. (FNI) at the Pacific Gas & Electric (PG&E) Food Service Technology Center (FSTC) whose operations are sponsored by the California Public Utilities Commission (CPUC). It does not necessarily represent the views of the CPUC, its employees, or the State of California. The CPUC, the State of California, its employees, contractors, and subcontractors make no warranty, express or implied, and assume no legal liability for the information in this report; nor does any party represent that the use of this information will not infringe upon privately owned rights. This report has not been approved or disapproved by the CPUC nor has the CPUC passed upon the accuracy or adequacy of the information in this report. Revision History Revision num. Date Description Author(s) 0 Sep 2016 Initial Release D. Livchak Page 2 of 13 PCP 160104
Contents Page Equipment Description. 4 Test Location 4 Ventilation. 4 Test Instrumentation Inventory.. 5 FNI Test Report: Results.. 6 Additions, Deviations, and Exclusions 11 Manufacturer Specifications Sheet... 12 Report Certification.. 13 Page 3 of 13 PCP 160907
Equipment Description Test Work Order Number (TWO) T20047 Manufacturer P.S. Creations Model PlateScrape Serial Number N/A Generic Equipment Type Plate Pre-Scrapper Rated Input N/A Construction Plastic, with nylon bristles Controls N/A External Dimensions (W x D x H) 17 x 11 x 12 Custom Settings (if any) Filled with 120F water Water Capacity 4.4 gal Test Location All testing was performed under controlled conditions in the Pacific Gas & Electric (PG&E) Food Service Technology Center (FSTC) laboratory facilities at 12949 Alcosta Blvd., Suite 101, San Ramon, CA 94583. Ventilation Placed on a countertop table and tested in a conditioned space without ventilation. Page 4 of 13 PCP 160104
Test Instrumentation Inventory Description (ID) Manufacturer Model Measurement Range Resolution Calibration Date Next Calibration Stopwatch(ALA110) Oakton 35002-11 0.01 86,400 s 0.01/1 s 11/14/2015 11/14/2016 Digital Scale(ALC 304) Acculab SVI-20B 0-44 lb 0.005 lb 05/11/2016 05/31/2017 DAQ Temp(ALE 510) National Instruments FP-TC-120 0-1000 F 0.1 F 08/08/2016 08/08/2018 Thermocouple Inventory Set Number Validation Date 79 9/1/2016 Holding Equipment Inventory Description (ID) Manufacturer Model N/A N/A N/A Page 5 of 13 PCP 160104
Equipment Description PlateScrape is a plate pre scrapper which can be utilized in lieu of a pre rinse spray valve. The plate prescrapper is not a sanitizing device and is intended to be used as a pre scrapper prior to the sanitization process in a dishwasher or a sanitizing solution. PlateScrape consists of a 5 gallon tank equipped with specifically designed nylon brushes for plate cleaning. The tank is filled with 4.4 gal of water to the fill level. The oppositely placed brushes are submerged in water. An operator submerges plates in the water past the nylon brushes. A combination of vertical and rotational movements remove debris from the plates as they are scrubbed by the brushes. PlateScrape Filled to Level Nylon Brushes Submerged in Water The tank performs the same task as a pre rinse spray valve while minimizing water consumption. PlateScrape can be filled with hot or cold water and be used with and without dish detergent. Hot water and the addition of detergent reduce cleaning times. Water consumption depends on how often the user empties and refills the tank which should be dependent on the amount of soil level on the plates. Page 6 of 13
20 Plates Covered with Dry Tomato Paste Prior to Cleaning 20 Plates After Cleaning with PlateScrape Methodology Testing was performed with 9 inch diameter plates weighing 1.3 lb each. PlateScrape was filled with 4.4 gallons of water. Each plate was evenly covered with one tablespoon (15 ml) of tomato paste and dried for a period ranging between 24 and 48 hours. Twenty plates were used for each test replicate. Tests were performed with 120⁰F, 100⁰F, and 70⁰F water. Cleaning time was recorded using a calibrated stopwatch and water temperature was measured throughout the test at 5 second intervals with type K thermocouples. Water volume was calculated by weighing the water before and after each test using a calibrated scale. Results Testing was performed with 120⁰F target water temperature in order to mimic the ASTM F2324 pre rinse spray valve test method. The PlateScrape was filled with 4.38 gal of hot water to the fill line. The average time to clean 20 plates was 10.9 seconds with 120⁰F initial temperature water. Three test replicates were conducted in order to confirm time consistency. By the time the last of the 20 plates was washed, the water temperature has dropped to 111⁰F from 120⁰F. In comparison, it takes a pre rinse spray valve 13 to 23 seconds on average to perform the same cleaning task at 60psi supplied with 120⁰F water. Pre rinse spray valve cleaning time depends on the flow pattern design and water flow rate. Page 7 of 13
Cleaning Water Temperature (F) 122 121 120 119 118 117 116 115 114 113 112 0 1 2 3 4 5 6 7 8 9 10 Test Time (min) PlateScrape Water Temperature Drop while washing 20 plates The washing technique involved scraping the plate for 5 seconds, then rotating it 90 degrees and scraping it for 5 more seconds. The plates were angled at an approximately 15 degree angle from vertical during the scraping. Scraping times were consistent ranging from 9 to 12 seconds per plate. The water level dropped by 0.09 gal for every 20 plates cleaned by the PlateScrape. Different users experienced similar cleanability times and cleanability times decreased as users became more familiar with the cleaning technique. 18 16 Plate Cleaning Time (sec) 14 12 10 8 6 4 2 0 1 2 3 Test Run PlateScrape Cleanability Times at 120 F for each run Page 8 of 13
The test with 120⁰F water resulted in a 10.9 sec cleanability time and a 111⁰F final water temperature. The test with 100⁰F water resulted in a 13.6 sec cleanability time and a 95⁰F final water temperature. The test with 70⁰F room temperature water resulted in a 16.9 sec cleanability time and the water temperature did not change. Plate Cleaning Time (sec) 18 16 14 12 10 8 6 4 2 0 120 100 70 Washing Water Temperature (F) PlateScrape Cleanability Times at Different Initial Water Temperatures Water consumption will depend on how often the user dumps the water based on the soil level of the plates. If water was replaced every 200 plates cleaned with 0.09 gal added for every 20 plates cleaned, the water consumption would be 5.30 gal per 200 plates including the fill. This equates to 0.0265 gal per plate. This assumes 120⁰F water was used and a 4 second plate handling time with 4 plates washed per minute. The equivalent flowrate of the PlateScrape was 0.106 gpm. If the water was replaced every 100 plates cleaned, the water consumption would be 4.85 gal and the equivalent flowrate would be 0.194 gpm. In the worst water consumption scenario, if the water was replaced every 20 plates cleaned, the water consumption would be 4.47 gal with an equivalent flowrate of 0.894 gpm. Page 9 of 13
Water Color after Washing 20 plates covered with dried tomato paste (20 tablespoons total) Cleanability Time Initial Water Temperature (⁰F) 120 100 70 Cleaning Time Per Plate (sec) 10.9 13.6 16.9 Water Consumption Comparison Plates Washed Fill (gal) Topoff (gal) Plates Per Minute (120⁰F) GPM equivalent 200 4.4 0.9 4 0.106 150 4.4 0.675 4 0.135 100 4.4 0.45 4 0.194 50 4.4 0.225 4 0.370 20 4.4 0.09 4 0.898 Page 10 of 13
Additions, Deviations, & Exclusions Additions: Cleanability test was performed at 70 F and 100 F in addition to 120 F tests. Deviations: Water temperature decreased throughout testing after the initial fill; initial and final water temperatures are documented in the report. Exclusions: The Flow Rate test is not applicable to this device. Water consumption is determined by the holding volume of the device. Total water consumption will vary depening on how often the user changes out the water. Page 11 of 13 PCP 160104
Manufacturer Specifications Sheet Manufacturer Specifications Sheet (Continued) Page 12 of 13 PCP 160104
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