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MODELS
RFHU-21F
RFHU-31F
RFHU-41F
RFHU-51F
RFHU-22F
RFHU-23F
RFHU-52F
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 © 2023 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 C 09/29/2023
P/N 229431
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Table of Contents
Related Manuals for Duke READY FLEX RFHU-21F
Summary of Contents for Duke READY FLEX RFHU-21F
- Page 1 WARNING for CA residents: go to www.dukemfg.com/prop65 for prop 65 warning This manual is Copyright © 2023 Duke Manufacturing Co. All rights reserved. Reproduction without written permission is prohibited. Duke is a registered P/N 229431 trademark of the Duke Manufacturing Co.
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Page 2: Table Of Contents
RFHU Full Size Pan Operator’s Manual TABLE OF CONTENTS Manufacturer’s Introduction ............................3 Important Safety Instructions ..........................4-5 Installation ..................................6 Stacking Units .................................7 RFHU Operating Instructions ............................8 Overview ......................................8 Preheating ......................................10 Faults ........................................10 Units With Timer Bars ..................................11 RFHU Daypart Menu ..................................12 Settings ..................................13 Menu ........................................13 Temp Mode .......................................13... -
Page 3: Manufacturer's Introduction
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 4: 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 5 RFHU Full Size Pan Operator’s Manual 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 6: Installation
RFHU Full Size Pan Operator’s Manual INSTALLATION UNPACKING UNIT The following minimum clearances must be Inspect the shipping carton and/or container, maintained between the warmer and any carefully noting any exterior damage on the combustible or non-combustible substance: delivery receipt; also note any damage not evident on the outside of the shipping container (concealed Unit Clearance... -
Page 7: Stacking Units
RFHU Full Size Pan Operator’s Manual STACKING UNITS The RFHU is designed to allow limited stacking capabilities. This section outlines how to safely stack the holding unit. Step 1 Remove the base pan from the unit that will be on top. The pan is held in place by four screws on the bottom of the unit. -
Page 8: Rfhu Operating Instructions
Different types of information are found on the boot screen will appear first for 2 or 3 seconds. This runtime screen. Details below. will display the Duke Logo along with the firmware version number of the RFHU. Lid Indicator Recipe Name... - Page 9 RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued Each recipe is programmed with a “hold time”. The Three-day part menus are available to be selected hold time can be configured for any time between on the runtime screen. 1 minute to 720 minutes.
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Page 10: Preheating
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued PREHEATING When the RFHU first boots each well will contain a preheating icon. This indicates the well is heating to temperature. When the recipe temperature is reached the preheat icon will clear and the well will be ready for use. -
Page 11: Units With Timer Bars
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued RFHU DAYPART MENU Units with optional Timer bar To choose another menu, select the Menu Selector. TO ENSURE OPTIMAL HOLD QUALITY, THE USER This will display the Menu screen. Select another WOULD PRESS THE BUTTON ON THE TIMER BAR Menu number and then back to the runtime CORRESPONDING WITH THE PAN LOCATION TO... -
Page 12: Rfhu Daypart Menu
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued • ENSURE PROPER HEAT SINK COVERS ARE INSERTED INTO THE CORRECT LOCATION (BROILED AND MOISTURE SENSITIVE PRODUCTS ONLY). • ENSURE METAL TRIVETS ARE INSERTED INTO THE PANS FOR FRIED PRODUCTS. •... -
Page 13: Settings
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued SETTINGS Several Settings are available on the RFHU. To enter the Settings menu click on the cog icon ( ) which is found in the lower right hand corner of the runtime screen. Menu PHU Configurator When the user loads the “RFHU Config”... -
Page 14: Language
“Language” Setting. This is reserved for future use both top and bottom heat. To optimize the holding and will allow RFHU users to change the language performance of the Duke ReadyFlex unit additional display on all screens. temperature adjustments may be necessary. -
Page 15: Help
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued Help Tools Menu When selecting Help option the Help screen will The following configurations are available on the TOOLS load with a QR code. When scanned this will link to menu. - Page 16 RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued The current network selection will be highlighted, To connect to a WiFI SSID click on the SSID name. either Ethernet or WiFi. For example: The Wifi SSID password will then be required. Press anywhere within the “Enter Password”...
- Page 17 RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued Once entered select “OK” on the on-screen keyboard followed by the check button to attempt to join the WiFi SSID. If the WiFi password is incorrect the RFHU will not join the WiFi network.
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Page 18: Phu Volume
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued PHU Volume Enter PIN "8429" and select and the following screen will be displayed. The PHU Volume option will either enable or disable sound on the RFHU. The slider can be moved either on or off. Select to save and update the PHU Volume Configuration. -
Page 19: Temp Offset
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued When this screen appears the TOP and BOTTOM Temp Offset current temperature offset value will appear. The The Temperature Offset function will allow the actual temperature read from the RFHU for both the temperature offset to be adjusted per ZONE on the top and bottom heaters will also appear. -
Page 20: Iu Mode
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued Re-entering the recipe config screen will display the UI MODE recipe information as a single line recipe name. The UI Mode option found in the Manager menu will allow the user to set the display to either a single line recipe name of 14 characters length or two line recipe name of 6 characters per line. -
Page 21: Multipan
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued When modifying the long recipe name an alpha- MULTIPAN numeric keyboard will appear on the screen and be Enabling Multipan will allow ½ and full size pans to used for modification of the recipe name. be configured on the RFHU in numerous available multipan configurations for that PHU. - Page 22 RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued After selecting the Multipan icon the following screen will appear. After selecting the Multipan configuration, the runtime screen will be updated with the Multipan After selecting a configuration, for example “3” the configuration.
- Page 23 RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued Re-entering the PHU Config screen can allow other The corresponding runtime screen will then be Multipan configurations to be selected. displayed as the following once wells have been For example; selecting Multipan layout “5” will started.
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Page 24: Sous Chef Cloud Programming
Name to be defined along with a user login and password. This can be created via the Sous Chef Cloud registration process without the assistance of Duke Customer Service. An option exists for this purpose on the souscheftech.com landing page –... -
Page 25: Usb Programming
RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued The “SHOW LEGEND” button can also be used to A list of local recipes found on the RFHU will appear display the full recipe list for the full account. here. - Page 26 RFHU Full Size Pan Operator’s Manual RFHU OPERATING INSTRUCTIONS - Continued For the user’s Account an “offline recipe set” will always be available to the user. This information will be saved and be readily available if a USB file is required to be created.
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Page 27: Cleaning Guide
RFHU Full Size Pan Operator’s Manual 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 28 RFHU Full Size Pan Operator’s Manual CLEANING GUIDE - continued PROCEDURE 1. Turn unit off, unplug, and allow to cool for 30 minutes. 2. Remove all holding pans and heat sink covers. Wash, rinse, and sanitize at the 3 compartment sink. 3.
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Page 29: Temperature Check Procedure
RFHU Full Size Pan Operator’s Manual 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 30: Rfhu Specification
RFHU Full Size Pan Operator’s Manual RFHU SPECIFICATIONS RFHU-41F Shown Above ELECTRICAL SPECIFICATION/CORD RATING (TOP AND BOTTOM HEAT) 120V - 60Hz 208/240 V - 60Hz 220/240V - 50/60Hz Model Amps NEMA Amps NEMA Amps Schuko RFHU-21F 5-15P 6.5/7.5 6-15P CEE7/7 (16A) RFHU-31F 5-15P 10.8/12.5... -
Page 31: Wire Diagrams
RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-21F Wire Diagram ELC0792 Rev B OPTIONAL Well 2 & 3 Well 2 & 3 (5V) Front Bottom (CAN_L) Timer Bar (CAN_H) (GND) FRONT TIMER BAR 180° Vertical Rear Ethernet REAR TIMER BAR Display Display Flex Cable... - Page 32 RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-31F Wire Diagram ELC0791 Rev B Well 1 OPTIONAL (5V) Front Top (CAN_L) Timer Bar (CAN_H) (GND) OPTIONAL Well 2 & 3 Well 2 & 3 (5V) Front Bottom (CAN_L) Timer Bar (CAN_H) (GND) FRONT TIMER BAR...
- Page 33 RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-41F Wire Diagram ELC0790 Rev B OPTIONAL Well 1 & 2 Well 1 & 2 (5V) Front Top (CAN_L) Timer Bar (CAN_H) (GND) OPTIONAL Well 3 & 4 Well 3 & 4 (5V) Front Bottom (CAN_L)
- Page 34 RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-51F Wire Diagram ELC0789 Rev B Well 1 OPTIONAL (5V) Front Top (CAN_L) Timer Bar (CAN_H) (GND) OPTIONAL Well 2 & 3 Well 2 & 3 (5V) Front Middle (CAN_L) Timer Bar (CAN_H) (GND) OPTIONAL...
- Page 35 RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-22F Wire Diagram ELC0812 Rev B Optional Front Timer Well 1 & 3 Well 2 & 4 Well 2 & 4 Well 1 & 3 (5V) 5Vdc CAN_L (CAN_L) CAN_H (CAN_H) (GND) FRONT TIMER BAR 180°...
- Page 36 RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-23F Wire Diagram ELC0813 Rev. B Optional Front Timer Bar Well 1 & 4 Well 2 & 5 Well 2 & 5 Well 1 & 4 Well 3 & 6 Well 3 & 6 5Vdc 5Vdc 5Vdc...
- Page 37 RFHU Full Size Pan Operator’s Manual WIRE DIAGRAMS RFHU-52F Wire Diagram ELC0788 Rev B Well 1 Well 2 Optional (5V) Front Top 5Vdc CAN_L Timer Bar (CAN_L) CAN_H (CAN_H) (GND) Optional Front Bottom Well 3 & 5 Well 3 & 5 Well 4 &...
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- Page 40 RFHU Full Size Pan Operator’s Manual THIS PAGE LEFT BLANK Duke Manufacturing Co. Phone: 314-231-1130 Toll Free: 1-800-735-3853 2305 N. Broadway www.dukemfg.com Fax: 314-231-5074 St. Louis, MO 63102...