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SHELF CONTROL
MODELS
RFHU-23R
RFHU-25S
CAUTION:
WARNING for CA residents: go to www.dukemfg.com/prop65 for prop 65 warning
U.S. and Foreign Patents Pending
Please read this manual completely before attempting
to install, operate or service this equipment
This manual is Copyright © 2021 Duke Manufacturing Co. All rights reserved.
Reproduction without written permission is prohibited. Duke is a registered
trademark of the Duke Manufacturing Co.
Installation and
Operation Manual
REV B 05/04/2021
P/N 529906
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Summary of Contents for Duke ReadyFlex RFHU-23R
- Page 1 WARNING for CA residents: go to www.dukemfg.com/prop65 for prop 65 warning This manual is Copyright © 2021 Duke Manufacturing Co. All rights reserved. Reproduction without written permission is prohibited. Duke is a registered P/N 529906 trademark of the Duke Manufacturing Co.
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Page 2: Table Of Contents
The Duke ideal holding curve, the DNA of the RFHU, has been developed, improved, and refined since Duke introduced the first product holding unit in 1999. Utilizing the innovative top and bottom patented Duke technology HeatSinksTM, extended hold times with improved food quality and consistency are achieved. -
Page 3: Important Safety Instructions
• This equipment should be serviced by qualified personnel only. Contact the nearest Duke authorized service facility for adjustment or repair. • Do not block or cover any openings on the unit. - Page 4 RFHU Operator’s Manual - Shelf Control IMPORTANT SAFETY INSTRUCTIONS The following warnings and cautions appear throughout this manual and should be carefully observed. • Turn the unit off, disconnect the power source and allow unit to cool down before performing any service or maintenance on the unit. •...
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Page 5: Installation
RFHU Operator’s Manual - Shelf Control INSTALLATION UNPACKING UNIT In Canada, the RFHU must be installed in accordance with the following: Inspect the shipping carton and/or container, 1. Local codes. carefully noting any exterior damage on the delivery receipt; also note any damage not evident 2. -
Page 6: Stacking Units
RFHU Operator’s Manual - Shelf Control ELECTRICAL SHOCK HAZARD UNIT MUST BE SAFETY GROUNDED, EARTHED. DO NOT MODIFY, DEFEAT ELECTRICAL CONNECTIONS OR ALTER PLUG. ELECTRICAL CONNECTIONS BEFORE CONNECTING THE UNIT TO THE POWER SOURCE, VERIFY THAT THE VOLTAGE AND PHASE OF THE POWER SOURCE ARE IDENTICAL TO THE VOLTAGE AND PHASE INFORMATION ON THE DATA LABEL. -
Page 7: Rfhu Operating Instructions - Shelf Control
When the unit is first powered the boot screen will reached this will change to a “ready” status. This appear for 2 to 3 seconds. This will display the Duke indicates that the required preset temperature has Logo along with the firmware version number. -
Page 8: Settings
RFHU Operator’s Manual - Shelf Control RFHU OPERATING INSTRUCTIONS SHELF CONTROL- Continued Instead of using navigation buttons the “grid” SETTINGS option in the lower right-hand corner of the screen A number of settings are available on the control can be used to see all zones with their preset to allow customization of labels and preset values. -
Page 9: Label Editing
RFHU Operator’s Manual - Shelf Control RFHU OPERATING INSTRUCTIONS SHELF CONTROL- Continued LABEL EDITING The “Zone” label consists of six characters that can be upper case letters, lower case letters or Selecting the “Label Editor” within the Settings numbers. Selecting will save the entry. -
Page 10: Access Menu
RFHU Operator’s Manual - Shelf Control RFHU OPERATING INSTRUCTIONS SHELF CONTROL- Continued The tools menu will also contain the “TEMP” option The temperature calibration option is also accessible which allows the user to switch between Celsius and from the “Admin” menu to edit the offset value for Fahrenheit display. -
Page 11: Faults
RFHU Operator’s Manual - Shelf Control RFHU OPERATING INSTRUCTIONS SHELF CONTROL- Continued The below runtime screen displays a High FAULTS Temperature fault on “Row 1 Top”. On occasion faults may be detected and displayed such as; SENSOR FAULT, LOW TEMP FAULT and HIGH TEMP FAULT. -
Page 12: Cleaning Guide
RFHU Operator’s Manual - Shelf Control CLEANING GUIDE Electrical shock hazard. Do not wash with water jet or hose. DO NOT USE CAUSTIC CLEANERS, ACIDS, AMMONIA PRODUCTS OR ABRASIVE CLEANERS OR ABRASIVE CLOTHS. THESE CAN DAMAGE THE STAINLESS STEEL AND PLASTIC SURFACES. - Page 13 RFHU Operator’s Manual - Shelf Control CLEANING GUIDE - continued PROCEDURE 1. Turn unit off, unplug, and allow to cool for 30 minutes. 2. Remove all holding pans. Wash, rinse, and sanitize at the 3 compartment sink. 3. Allow to air dry. 4.
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Page 14: Temperature Check Procedure
RFHU Operator’s Manual - Shelf Control TEMPERATURE CHECK PROCEDURE 1. A digital temperature meter that has been 5. All temperature controls exhibit a swing in calibrated must be used to get an accurate temperature as the control cycles on and off temperature reading. -
Page 15: Rfhu Specification
RFHU Operator’s Manual - Shelf Control RFHU SPECIFICATIONS 14.15 19.97 18.25 RFHU 23R RFHU 25S 14.15 40.00 19.56 ELECTRICAL SPECIFICATION/CORD DIMENSIONS RATING (TOP AND BOTTOM HEAT) Depth 208/240 V - 60Hz 220/240V - 50/60Hz Height Width (body only) Model Amps NEMA Amps RFHU 23R... -
Page 16: Wire Diagrams
Bottom Row 2 2 1-6 1 2 2 2 1-6 1 2 2 2 1-6 1 2 2 2 1-6 1 2 Phone: 314-231-1130 Duke Manufacturing Co. Toll Free: 1-800-735-3853 2305 N. Broadway www.dukemfg.com Fax: 314-231-5074 St. Louis, MO 63102...
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