Duke Readyflex User manual

P/N 229787
REV C 06/07/2021
MODELS
RFHU-22
RFHU-23
RFHU-24
RFHU-32
RFHU-42
U.S. and Foreign Patents Pending
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.
CAUTION: Please read this manual completely before attempting
to install, operate or service this equipment
Installation and
Operation Manual
WARNING for CA residents: go to www.dukemfg.com/prop65 for prop 65 warning

RFHU Operator’s Manual
2
TABLE OF CONTENTS
TO BE UPDATED
Manufacturer’s Introduction........................................................................................................................................3
Important Safety Instructions.................................................................................................................................. 4-5
Installation.......................................................................................................................................................................6
Stacking Units .................................................................................................................................................................7
Multipan Flexible Lid Option .....................................................................................................................................8
RFHU Operating Instructions .......................................................................................................................................9
Overview ............................................................................................................................................................................................. 9
Preheating ........................................................................................................................................................................................11
Faults...................................................................................................................................................................................................11
Units With Timer Bars....................................................................................................................................................................12
RFHU Daypart Menu .....................................................................................................................................................................13
Settings ..........................................................................................................................................................................14
Menu..................................................................................................................................................................................................14
Temp Mode.......................................................................................................................................................................................14
PHU Congurator...........................................................................................................................................................................14
Language ..........................................................................................................................................................................................15
RFHU Recipe Editor........................................................................................................................................................................15
Help.....................................................................................................................................................................................................16
About..................................................................................................................................................................................................16
Tools Menu........................................................................................................................................................................................16
Network .............................................................................................................................................................................................16
PHU Volume .....................................................................................................................................................................................19
Admin.................................................................................................................................................................................................19
Manager ............................................................................................................................................................................................19
Access Menu ....................................................................................................................................................................................19
Temp Oset ......................................................................................................................................................................................20
Duke Connected Equipment Platform (DCEP) Programming..............................................................................21
USB Programming........................................................................................................................................................22
Cleaning Guide .............................................................................................................................................................24
Temperature Check Procedure ..................................................................................................................................26
RFHU Specication.......................................................................................................................................................27
Wire Diagrams ........................................................................................................................................................28-35

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RFHU Operator’s Manual
MANUFACTURER’S INTRODUCTION
The ReadyFlex™ Holding Unit (RFHU) delivers unsurpassed culinary performance for a broad
variety of food products in a exible, easy to use, easy to learn, adaptable format thus addressing
the needs of the restaurant operations and protability.
The Duke ideal holding curve, the DNA of the RFHU, has been developed, improved, and rened
since Duke introduced the rst 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.
With the ReadyFlex™ holding unit, you can oer new menu items without limitation on how to
hold them; change your recipes and hold congurations by daypart; from breakfast to lunch to
dinner. Independent top and bottom heat zones are programmable to dial in perfect recipes for
any food….no compromises.
Utilizing an innovative and patent pending exible lid system, the ReadyFlex™ holding unit is
multi-pan capable, both 2.5” and 4” deep pan congurations can adapt to hold 1/3, 1/2, and full-
size pans, in addition to, 13x18” sheet pans. The Multi-pan feature is congurable and programmed
without the use of any additional parts or tools.
The easy to use, easy to learn touchscreen user interface is visual, smart, intuitive and colorful. In-
store control and programming is easy and fast - change to stored library recipes or program new
ones on the y. Daypart switching is simple and pre-programmed.
ReadyFlex™ Technology is ready to connect when (and if) you are. RFHU has built-in Wi-Fi,
Ethernet, USB and Mesh networking and connectivity to Bluetooth enable devices. RFHU is ready
to interact with 3rd party cloud and on-premise solutions.
Note: The RFHU is also available with a bottom only Duke technology HeatSink option that too
provides improved holding times and food quality than traditional FWM PHU models at an even
more compelling price.
Note: The RFHU is available with a dedicated lid system for those that choose to have xed pan
sizes for their operations.

RFHU Operator’s Manual
4
Throughout this manual, you will nd the following safety words and symbols that signify
important safety risks with regards to operating or maintaining the equipment.
Indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
CAUTION
Indicates Important Information
Indicates electrical shock hazard which, if not avoided, could
result in death or serious injury and/or equipment damage.
Indicates hot surface which, if not avoided, could result in
minor or moderate injury.
In addition to the warnings and cautions in this manual, use the following guidelines for
safe operation of the unit.
• Read all instructions before using equipment.
• For your safety, the equipment is furnished with a properly grounded cord connector. Do
not attempt to remove or disconnect the grounded connector.
• Install or locate the equipment only for its intended use as described in this manual.
• Do not use corrosive chemicals on this equipment.
• Do not operate this equipment if it has a damaged cord or plug, if it is not working
properly, or if it has been damaged or dropped.
• This equipment should be serviced by qualied personnel only. Contact the nearest
Duke authorized service facility for adjustment or repair.
• Do not block or cover any openings on the unit.
• Do not immerse cord or plug in water.
• Keep cord away from heated surfaces.
• Do not allow cord to hang over edge of table or counter.
IMPORTANT SAFETY INSTRUCTIONS

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RFHU Operator’s Manual
IMPORTANT SAFETY INSTRUCTIONS
The following warnings and cautions appear throughout this manual and should be
carefully observed.
• Turn the unit o, disconnect the power source and allow unit to cool down before
performing any service or maintenance on the unit.
• The procedures in this manual may include the use of chemical products. You must read
the Material Safety Data Sheets before using any of these products.
• The unit should be grounded according to local electrical codes to prevent the
possibility of electrical shock. It requires a grounded receptacle with dedicated electrical
lines, protected by fuses or circuit breaker of the proper rating, in accordance with all
applicable regulations.
• Disposal of the unit must be in accordance with local environmental codes and/or any
other applicable codes.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance
by a person responsible for their safety.
• Contains Transmitter Module FCC ID: 2AQ2Q-MUR1LVUFL
• Contains Transmitter Module IC: 27013-MUR1LVUFL.
• This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may
cause undesired operation.
• This equipment complies with radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with a minimum
separation distance of 20cm between the radiator (enclosed antenna) and your body.
• This device is granted for use in Mobile only congurations in which the antennas used
for this transmitter must be installed to provide a separation distance of at least 20cm
from all person and not be co-located with any other transmitters except in accordance
with FCC and Industry Canada multi-transmitter product procedures.
• Changes or modications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.

RFHU Operator’s Manual
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UNPACKING UNIT
Inspect the shipping carton and/or container,
carefully noting any exterior damage on the
delivery receipt; also note any damage not evident
on the outside of the shipping container (concealed
damage). Contact the carrier immediately and le a
damage claim with them. Save all packing materials
when ling a claim. Freight damage claims are the
responsibility of the purchaser and are not covered
by the warranty.
• Follow the instructions on the Carton Box for
unpacking the unit.
• Inspect unit for damage.
• Report any dents or breakage to source of
purchase immediately.
• Do not attempt to use unit if damaged.
• Remove all materials from unit interior.
• If unit has been stored in extremely cold area,
wait a few hours before connecting power.
INSTALLATION CODES AND STANDARDS
In the United States, the RFHU must be installed in
accordance with the following:
1. State and local codes.
2. National Electrical Code (ANSI/NFPA No. 70,
latest edition) available from the National Fire
Protection Association, Batterymarch Park,
Quincy, MA 02269.
3. Vapor Removal from Cooking Equipment,
(NFPA-96, latest edition) available from NFPA.
4. Sealed to the counter upon which the
equipment is placed per NSF/ANSI 4 standard.
In Canada, the RFHU must be installed in
accordance with the following:
1. Local codes.
2. Canadian Electrical Code (CSA C22.2 No. 3, latest
edition) available from the Canadian Standards
Association, 5060 Spectrum Way, Mississauga,
Ontario, Canada L4W 5N6.
UNIT PLACEMENT
• Do not install unit next to, below or above
source of heat such as oven or deep fat fryer.
• Install unit on level counter top surface.
• Outlet should be located so that plug is
accessible when the unit is in place.
• Do not install unit in the direct path of
air-conditioned airow.
The following minimum clearances must be
maintained between the warmer and any
combustible or non-combustible substance:
Proper airow around unit will cool the electrical
components. With restricted airow, the unit may
not operate properly and the life of the electrical
components may be reduced. A 2” clearance is
recommended at the control side for longer control
life expectancy.
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.
EARTHING INSTRUCTIONS
THE UNIT MUST BE GROUNDED. Grounding reduces
risk of electric shock by providing an escape
wire for the electric current if an electrical short
occurs. This unit is equipped with a cord having a
grounding wire with a grounding plug. The plug
must be plugged into a receptacle that is properly
installed and grounded.
Consult a qualied electrician or service agent
if grounding instructions are not completely
understood, or if doubt exists as to whether the
unit is properly grounded.
DO NOT USE AN EXTENSION CORD. If the product
power cord is too short, have a qualied electrician
install a three-slot receptacle (or the country
specic receptacle for International Units). This unit
should be plugged into a dedicated circuit with the
electrical rating as provided on the product data
plate.
INSTALLATION
Unit Clearance
Right Side 2”
Left Side 2”
Rear OPEN
Floor 0”

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RFHU Operator’s Manual
STACKING UNITS
The RFHU is designed to allow limited stacking capabilities. This section outlines how to safely stack the
holding unit.
TIP HAZARD! DO NOT STACK RFHU42 OR
RFHU34 UNITS. DO NOT EXCEED 2 HOLDING UNITS
PER STACK. DO NOT PLACE HOLDING UNIT STACKS ON
SURFACES THAT MAY EASILY TIP OVER.
Place bottom unit into position then stack the next unit
on top. The top of the lower holding unit rests inside of
the base of the upper 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.
Step 2
PROPER USE OF HEATSINKTM COVERS
Proper usage of each is important and is outlined below:
Product Type Dedicated 1/3 Size Lid Option Multi pan Flexible Lid Option
Broiled and Grilled Solid Lid Solid Lid
Fried No Lid Vented Lid
Consult your Kitchen Operations Manual for any modications to the above based on your specic food
requirements.

RFHU Operator’s Manual
8
MULTIPAN FLEXIBLE LID OPTION
To install the lid, with its support anges upward lead the anges over the tabs of the lid support brackets.
Slide it all the way in until the lid drops into position, rest on the supports, and is retained front to back.
It's as easy as that. Enjoy the many pan size and conguration options possible with this patent pending
exible lid system.
With the Multipan Flexible Lid Option, there are solid and vented lids. Additionally, each are both provided
with and without pan guides. This provides the maximum exibility whether you choose to use 1/3, 1/2, full
size pans or a combination of pan sizes. For the below examples, we will use a 2x3 PHU conguration and
show a few of the 3 wide shelf conguration options and their lid orientations.
1. Congured for 1/3 size pans;
a. Wells 1 & 2 with lids oriented with the pan
guides to the right.
b. Well 3 using a lid with no pan guide. This
provides pan guides for all three 1/3 size
pans, as shown.
2. Congured for one - 1/2 size pan and one - 1/3
six pan;
a. Well 1 with a lid oriented with the pan guide
to the left.
b. Well 2 with a lid oriented with the pan guide
to the right.
c. Well 3 using a lid with no pan guide. This
provides pan guides between the 1/2 size
pan and 1/3 size pan.
These are just a few of the multiple pan options possible that you can congure without the use of tools and
with the standard parts included with your unit.
3. Congured for one full size pan;
a. Well 1 with a lid oriented with the pan guide
to the left.
b. Well 2 with a lid with no pan guide.
c. Well 3 with a lid oriented with the pan guide
to the right.

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RFHU Operator’s Manual
RFHU OPERATING INSTRUCTIONS
When the ReadyFlex™ Holding Unit is turned on the
boot screen will appear rst for 2 or 3 seconds. This
will display the Duke Logo along with the rmware
version number of the RFHU.
RUNTIME SCREEN
After the RFHU has loaded the runtime screen will
load.
Dierent types of information are found on the
runtime screen. Details below.
When the unit rst 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.
OVERVIEW
In this instance a 3X4 RFHU has been detected.
A “3X4” has a layout consisting of 3 rows by 4
columns containing up to 12 programmed recipes
in total.

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10
RFHU OPERATING INSTRUCTIONS  Continued
Each recipe is programmed with a “hold time”. The
hold time can be congured for any time between
1 minute to 540 minutes. Pressing on any well will
start the timer.
When a well is started the color of the well will
change to green, use this product rst. When
the second well of the same recipe is started the
started well change to amber, use this next. When
subsequent wells of the same recipe are started,
they will also be amber. If a dierent well is started
with a dierent recipe and there is no other well
running with the recipe - then it will also have green
background.
When the well countdown timer expires, the timer
shows a“X”, the will turns red and an alarm will
sound. Touching the well, cancels the alarm. To
cancel an unexpired timer you must press and hold.
Three-day part menus are available to be selected
on the runtime screen.
When selected these will change the recipe display.
For example, during Breakfast hours you may hold
dierent recipes to lunch or dinner.
Changing from“Menu 1” to “Menu 2” will change all
non-running programmed recipes name to the new
menu layout.
If a well is currently running and the menu is
changed the new recipe name will not take eect
until the well has been stopped or expired and
cleared.
A Cook More time value can be programmed for
each individual recipe. The “Cook More time” is used
to indicate that the remaining hold time of the
current recipe is low and they should start cooking/
preparing the recipe once more.
A “+” symbol appears on the individual well with the
cook more time indicator.
For example:

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RFHU Operator’s Manual
PREHEATING
RFHU OPERATING INSTRUCTIONS  Continued
When the RFHU rst 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.
FAULTS
On occasion faults may occur on the RFHU. If a fault
occurs an indicator will appear on the well and the
well will not be usable (cannot start/stop timers).
1. Top Heater High Temperature Fault
2. Top Heater Low Temperature Fault
3. Bottom Heater High Temperature Fault
4. Bottom Heater Low Temperature Fault
5. CAN Error Fault
6. Back Screen Disconnected
Each fault will display an indicator that is unique for
the top of fault that has appeared.

RFHU Operator’s Manual
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11 22 33
TO ENSURE OPTIMAL HOLD QUALITY, THE USER WOULD PRESS THE BUTTON ON THE TIMER BAR
CORRESPONDING WITH THE PAN LOCATION TO ACTIVATE A HOLD CYCLE.
THIS STARTS THE TIMER COUNTDOWN.
RFHU OPERATING INSTRUCTIONS  Continued
1. Status LED’s: Indicates status of the pan
a. Non-Illuminated – timer is inactive – no product in pan.
b. Green – timer is active – product in pan (use 1ST)
c. Amber – timer is active – product in pan (use next)
d. Non-Illuminated – timer active – product in pan
(use later)
e. Flashing Green – cook warning time reached
(cook more product)
f. Flashing Red – product is expired (discard)
2. Arrow buttons
a. Used for starting and stopping the timer
b. Used to access menu mode
c. Indicates which pan the adjacent status LED and pan
display are linked to
3. Pan Display
a. In startup mode it will display spinning bars then
transition to PRE HEAT, and then cycle through the
bottom actual temp and top actual temp
b. Once unit reaches the recipe set points it will display
product name. (If associated recipe requires a lid display
will toggle prod name, lid.)
c. Unit will display product name and hold time remaining
(display will alternate between the two when a timer
is active)
• 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.
• UPON TURNING ON, ALLOW
THE HOLDING UNIT TO HEAT
FOR AT LEAST 30 MINUTES
OR UNTIL THE TEMPERATURE
DISAPPEARS AND THE TIMER
BARS DISPLAY THE PRE
PROGRAMMED PRODUCT
NAMES.
• IF THE TIMER BARS DISPLAY
“HIGH” OR“LOW” AT ANY TIME
AFTER THE PREHEAT PERIOD,
DISCONTINUE USE OF THE
AFFECTED PAN LOCATIONS
UNTIL THE HOLDING UNIT CAN
BE SERVICED.
Units with optional Timer bar

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RFHU Operator’s Manual
Menu Mode
1. Press and hold the paired arrows for a display segment for 3 seconds to enter Menu Mode. Display will
toggle (NAME, product name)
2. 1ST button press will display (ACT TEMP, actual temp bottom, actual temp top)
3. 2ND button press will display (SET TEMP, temp set point bottom, temp set point top)
4. 3RD button press will display (TIME, receptive in minutes)
5. 4TH button press will display (LID, ON or OFF)
6. 5TH button press will display (COOK MORE TIME, cook more time in minutes)
7. 6TH button press will display (FIRM, actual rmware version)
8. 7TH button press will display (LED display will light all LEDs in a testing sequence)
RFHU OPERATING INSTRUCTIONS  Continued
WILL CYCLE THE UNIT THROUGH THE DIFFERENT DAYPARTS
AND SHOW PRODUCTS ASSOCIATED
WITH EACH MENU.
• 1– Breakfast
• 2– Lunch
• 3– Dinner
RFHU DAYPART MENU

RFHU Operator’s Manual
14
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.
“Temp Mode” will display an option where the
temperature mode can be changed from the
default of Fahrenheit to Celsius.
NOTE: Any temperature throughout the control will
display in the selected temperature mode.
RFHU OPERATING INSTRUCTIONS  Continued
The “Menu”option is allows you to select the
number Menus (or dayparts) you want to be
available (1 to 3).
Menu
Temp Mode
PHU Congurator
When the user loads the “RFHU Cong” menu
option within Settings the following screen will
appear.
In the same way as the runtime screen the unit’s
conguration (for example 3X4) will be detected
and displayed.
The PHU cong option allows the recipe mapping
of each well to be modied for each menu.
The number in the middle of each zone along with
the color indicates that the individual wells are
within the same temperature zone.
Current well mapping is displayed. For example
“BURG” is selected for both wells in “Zone 1”. The
“CHKN” recipe is selected for both wells in “Zone 2”.
When programming, only recipes with the same
BOTTOM (and TOP) temperature can be congured
next to each other within the same temperature
zone.

15
RFHU Operator’s Manual
RFHU OPERATING INSTRUCTIONS  Continued
When an individual well is pressed a list of available
recipes will appear available for selection within the
zone, for example:
Use the left and right navigation buttons to scroll
through the available recipes for this RFHU. To
assign a new recipe to the well, simply select the
desired recipe.
Select to exit without making a change.
Select to save and update the RFHU
Conguration.
When the user returns to the runtime screen and
the well has stopped, the new recipe name will
appear where programmed.
Note: If a change is made and there is a current
recipe running, the new recipe name will not take
aect until the previous receipt has stopped/
expired or been cleared.
“Language” Setting. This is reserved for future use
and will allow RFHU users to change the language
display on all screens.
Language
RFHU Recipe Editor
Selecting the “Recipe Cong” option will display
the list of local recipes currently stored on the unit.
These are sorted alphabetically
Key information on each recipe is displayed on
this screen view. This includes the Recipe Name
(appears on the well on the runtime screen), the
Hold Time, Cook More Time, Top temperature and
the Bottom Temperature.
Page navigation buttons can be used on each
screen to navigate through each set of recipes.
The “+” icon can be used to add a new local recipe.
Selecting on an existing recipe will load the recipe
in edit mode.
Each of the 8 recipe elds can be modied here.
The Duke ReadyFlex unit comes preprogrammed
with generic recipes installed on the unit
and provided in the software. These recipe
recommendations were developed for 1/3 size pan
congurations, when utilizing the exible lid system
to accommodate larger pan capacities temperature
adjustments are recommended. When increasing
pan capacity for fried products start with using
30-degree (F) temperature increase for both top
and bottom heat and if holding moist products start
with using a 10-degree (F) temperature increase for
both top and bottom heat. To optimize the holding
performance of the Duke ReadyFlex unit additional
temperature adjustments may be necessary.

RFHU Operator’s Manual
16
RFHU OPERATING INSTRUCTIONS  Continued
Tools Menu
The following congurations are available on the TOOLS
menu.
The “About” screen will detail specic settings
available to the RFHU.
About
This will include the unit’s serial number, API key,
rmware version along with the unique network
MAC address used for both WiFI and ethernet
connectivity.
Network
The Network Cong option will allow the RFHU
network connection to be congured. After
selecting “Network Cong” the following screen will
load.
Network Cong can be set to“Read Only” mode if
the access is locked within Tools menu. Alternatively,
if “Network” is unlocked in the Access menu then
changes can be made to the selected network.
The RFHU supports both WiFi and Ethernet connec-
tions. In each network mode, both automatically
assigned IP addresses (DHCP) and manually entered
static IP addresses are supported.
To modify Network Settings rst ensure that Net-
work Settings are unlocked in the Access Menu
(they are by default). Then enter the “Network” op-
tion found within the“Tools” menu.
“Help Mode”will be reserved for future use where
instructional material relating to the RFHU will be
displayed.
Help

17
RFHU Operator’s Manual
RFHU OPERATING INSTRUCTIONS  Continued
The current network selection will be highlighted,
either Ethernet or WiFi. For example:
To change to WiFi select the WiFi icon ( ) near the top
of the Network Cong screen. A list of available WiFi
SSID’s will then appear.
To connect to a WiFI SSID click on the SSID name.
The Wi SSID password will then be required.
Press anywhere within the“Enter Password” box
to load the on-screen keyboard to enter the WiFi
password.

RFHU Operator’s Manual
18
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. If the WiFI password is correct
the RFHU will join the network and the RFHU will be
connected.
If the RFHU is currently connected to a WiFi network
the connected SSID will be displayed in blue.
To disconnect from the WiFi select the disconnect
icon ( ) in the lower left hand corner of the RFHU
or alternatively click on another WiFi SSID to join
a dierent WiFI network (WiFi password entry will
then be required).
The “DHCP”toggle is available for both ethernet
and WiFI connections. By default DHCP will be
selected. Instead of being assigned an IP address
automatically a static IP address will allow the
network settings (IP Address, Subnet Mask, Default
Gateway, Primary DNS Server, Secondary DNS
Server) to be manually congured and saved.
Selecting on any of the 5 Network Settings will load
an on-screen numeric keypad where the IP address
details can be entered manually.
Once entered select the check button to save
the newly entered settings.

19
RFHU Operator’s Manual
RFHU OPERATING INSTRUCTIONS  Continued
Access Menu
The ACCESS menu allows a number of conguration
options to be “locked” or unable to be changed. When
selected the following screen will appear.
Manager
The “Admin” options is reserved for future use.
The MANAGER menu is PIN code protected and
allows the 'manager' access to the ACCESS and
TEMP OFFSET functions.
Selecting "MANAGER" the following screen will be
displayed.
Enter PIN "8429" and select and the following
screen will be displayed.
Admin
PHU Volume
The PHU Volume option will either enable or disable
sound on the RFHU.
The slider can be moved either on or o.
Select to save and update the PHU Volume
Conguration.
Select to exit without making a change.
Each of the Recipe Cong, Menu, Temp Mode (C/F)
and Network can be locked or unlocked.
For example, if “Recipe Cong”is locked when the
Recipe Cong option described previously is loaded
it will be in “VIEW MODE” only. Modications such
as editing existing recipe settings, delete a recipe or
adding a new recipe will not be available.

RFHU Operator’s Manual
20
RFHU OPERATING INSTRUCTIONS  Continued
When this screen appears the TOP and BOTTOM
current temperature oset value will appear. The
actual temperature read from the RFHU for both the
top and bottom heaters will also appear.
The edit icon ( ) will load the oset editor screen
for either“Top Oset” or “Bottom Oset”.
Once again the current temperature will be
displayed. The current oset value will also be
displayed.
The and can be selected to increase the oset
value by 1F each press.
Select to exit without making a change. Select
to save and update the oset value.
Temp Oset
The Temperature Oset function will allow the
temperature oset to be adjusted per ZONE on the
selected RFHU.
After selecting the “TEMP OFFSET”function the
following screen will appear.
The screen will be divided into a grid like display.
Instead of each “colored area” indicating a well it will
now indicate a“Zone”. In most PHU congurations a
“Zone” generally means the two wells next to each
other – however there may be exceptions to this
rule. Select a zone.
After selecting a zone the following screen will
appear.