Welbilt Frymaster UHCTHD User manual

UHCTHD Touch Holding Cabinet
Service Manual
This manual is updated as new information and models are released. Visit our website for the latest manual.
Your Growth Is Our Goal
Part Number: FRY_SM_8197669 01/2020
*8197669*
Original Instructions

Safety Notices
nWarning
Read this manual thoroughly before operating, installing
or performing maintenance on the equipment. Failure
to follow instructions in this manual can cause property
damage, injury or death.
nCaution
Use caution when lifting the UHCTHD. The unit weighs
195.6 pounds (88.7 Kg). Three to four people, using
standard safe lifting practices, will be necessary to
handle the cabinets.
nCaution
DO NOT operate the UHCTHD unless it has been
properly installed and checked.
nWarning
Use Caution when setting up, operating, or cleaning the
UHCTHD to avoid contact with heated surfaces.
nCaution
The UHCTHD is not suitable for outdoor use. When
operating this unit, it must be placed on a horizontal
surface.
NOTICE
IF, DURING THE WARRANTY PERIOD, THE CUSTOMER
USES A PART FOR THIS FRYMASTER FOOD SERVICE
EQUIPMENT OTHER THAN AN UNMODIFIED NEW
OR RECYCLED PART PURCHASED DIRECTLY FROM
FRYMASTER, OR ANY OF ITS AUTHORIZED SERVICE
CENTERS, AND/OR THE PART BEING USED IS MODIFIED
FROM ITS ORIGINAL CONFIGURATION, THIS WARRANTY
WILL BEVOID. FURTHER, FRYMASTER AND ITS AFFILIATES
WILL NOT BE LIABLE FOR ANY CLAIMS, DAMAGES OR
EXPENSES INCURRED BY THE CUSTOMER WHICH ARISE
DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, DUE
TO THE INSTALLATION OF ANY MODIFIED PART AND/
OR PART RECEIVED FROM AN UNAUTHORIZED SERVICE
CENTER.
nCaution
DO NOT position the UHCTHD near the steam or heat
exhaust of another appliance.
nCaution
DO NOT operate the UHCTHD unless all service and
access panels are in place and properly secured.
DANGER
Do not install or operate equipment that has been
misused, abused, neglected, damaged, or altered/
modified from that of original manufactured
specifications.
DANGER
Keep power cord AWAY from HEATED surfaces. DO NOT
immerse power cord or plug in water. DO NOT let power
cord hang over edge of table or counter.
nWarning
Authorized Service Representatives are obligated to
follow industry standard safety procedures, including,
but not limited to, local/national regulations for
disconnection / lock out / tag out procedures for all
utilities including electric, gas, water and steam.
nWarning
DO NOT store or use gasoline or other flammable vapors
or liquids in the vicinity of this or any other appliance.
Never use flammable oil soaked cloths or combustible
cleaning solutions, for cleaning.
nWarning
Operation, installation, and servicing of this product may
expose you to chemicals/products including [Bisphenol
A (BPA), glass wool or ceramic fibers, and crystalline
silica], which is [are] known to the State of California to
cause cancer, birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.
nWarning
Do not use electrical appliances or accessories other
than those supplied by the manufacturer.
nWarning
Use caution when handling metal surface edges of all
equipment.
nWarning
This appliance is not intended for use by children
under the age of 16 or persons with reduced physical,
sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
concerning use of the appliance by a person responsible
for their safety. Do not allow children to play with this
appliance.

nWarning
DO NOT use this product near water – for example, near
a kitchen sink, in a wet basement, near a swimming
pool, or similar locations.
nWarning
DO NOT attempt to repair or replace any component
of the UHCTHD unless all power to the unit has been
disconnected.
NOTICE
This appliance is intended for professional use only
and it is to be operated by qualified personnel only. A
Frymaster Authorized Servicer (FAS) or other qualified
professional should perform installation, maintenance,
and repairs. Installation, maintenance, or repairs by
unqualified personnel may void the manufacturer's
warranty.
NOTICE
This appliance is intended to be used for commercial
applications, for example in kitchens of restaurants,
canteens, hospitals and in commercial enterprises such
as bakeries, butcheries, etc., but not for continuous
mass production of food.
nWarning
DO NOT use water jets or a steam cleaner to clean this
equipment or installed in an area where a water jet can
be used
Proper installation, care and maintenance are
essential for maximum performance and trouble-
free operation of your equipment. Visit our website
www.frymaster.com for manual updates.

Table of Contents
iii
Section 1
General Information
Model Numbers ................................................................................................. 1-1
Serial Number Information .............................................................................. 1-1
Service Personnel .............................................................................................. 1-1
Section 2
Operation
Power Switch...................................................................................................... 2-1
User Interface .................................................................................................... 2-2
Password ............................................................................................................ 2-2
Press & Go Screen Icons ................................................................................... 2-2
Press & Go Screens ........................................................................................... 2-2
Tray Specifications............................................................................................. 2-3
Changing Day Parts ........................................................................................... 2-4
Changing Language........................................................................................... 2-4
ECO Mode Screen.............................................................................................. 2-4
Turning Off Slots................................................................................................ 2-4
Temperature Screen ......................................................................................... 2-4
Menu Screens..................................................................................................... 2-5
Setting Screens .................................................................................................. 2-8
Preferences Screen ........................................................................................... 2-8
Date & Time Screen........................................................................................... 2-8
Language Screen ............................................................................................... 2-9
Daypart Screen .................................................................................................. 2-9
Zone Diagnostics Screens................................................................................. 2-9
Sound & Screen Tests ..................................................................................... 2-10
Errors Log Screen ............................................................................................ 2-10
Password Settings Screen............................................................................... 2-10
System Information Screen............................................................................ 2-11
Utilities Screen ................................................................................................. 2-11
Section 3
Maintenance
Component Identification ................................................................................ 3-1
Replacing a Heater Pad..................................................................................... 3-2
Replacing a Touch Screen................................................................................. 3-3
Replacing Components in the Electronics Box .............................................. 3-3
Updating Software............................................................................................. 3-3
Exporting Files.................................................................................................... 3-3
Importing File ..................................................................................................... 3-5
Section 4
Troubleshooting
Troubleshooting................................................................................................. 4-1
Zone Diagnostics ............................................................................................... 4-1

iv
Table of Contents (continued)
Power Issues Troubleshooting......................................................................... 4-2
Communication Issues Troubleshooting........................................................ 4-3
Temperature Too Low/Self Temp Low Issues Troubleshooting .................. 4-4
Temperature Too High Issues Troubleshooting ............................................ 4-5
Display Issues Troubleshooting....................................................................... 4-6
Service Procedures.......................................................................................... 4-7
Power Supply Test ............................................................................................. 4-7
RTD Test.............................................................................................................. 4-7
IO Board Test ..................................................................................................... 4-7
Heater/RTD Troubleshooting ........................................................................... 4-7
Shorted Triac...................................................................................................... 4-7
Heater Plate Test ............................................................................................... 4-7
Display Meanings............................................................................................... 4-8
Section 5
Wiring Diagrams
UHCTHD Wiring .................................................................................................. 5-1

1-1
Model Numbers
Models Description
UHCTHD6 6-slot
UHCTHD3 3-slot
Serial Number Information
UHCTHD holding cabinet serial and model numbers are
located on the data plate. Data plates are located on the top
right rear of the unit.
Always have the serial number of your unit available
when calling for parts or service.
Service Personnel
All service on Frymaster equipment must be performed by
qualified, certified, licensed, and/or authorized or service
personnel.
Qualified service personnel are those who are familiar
with Frymaster equipment and who have been authorized
by Frymaster to perform service on the equipment. All
authorized service personnel are required to be equipped
with a complete set of service and parts manuals, and to
stock a minimum amount of parts for Frymaster equipment.
A list of Frymaster Factory Authorized Servicers (FAS’s) is
located on the Frymaster website at http://www.Frymaster.
com/Service. Failure to use qualified service personnel
will void the Frymaster warranty on your equipment.
Section 1
General Information

2-1
DANGER
The on-site supervisor is responsible for ensuring that
operators are made aware of the inherent dangers of
operating this equipment.
DANGER
Do not operate any appliance with a damaged cord
or plug. All repairs must be performed by a qualified
service company.
DANGER
Never stand on the unit! They are not designed to
hold the weight of an adult, and may collapse or tip if
misused in this manner.
nWarning
Do not contact moving parts.
nWarning
All covers and access panels must be in place and
properly secured, before operating this equipment.
nWarning
Do not put heat sealed containers or plastic bags in
holding cabinet. Food or liquid could expand quickly
and cause container or bag to break. Pierce or open
container or bag before heating.
nWarning
Racks, utensils, rack guides, and holding cabinet
surfaces may become hot during or after use. Use
utensils or protective clothing, like pan grips or dry
oven mitts, when necessary to avoid burns.
nWarning
DO NOT use the cavity for storage. DO NOT leave paper
products, cooking utensils, or food in the cavity when
not in use.
,Caution
DO NOT cover racks or any other part of the holding
cabinet with metal foil.
The Frymaster UHCTHD Holding Cabinet has been designed
to afford food service operators the ability to cook menu
components in advance and then gently store that product
in the holding bins until an order is received. Once that order
has been placed, the crew can assemble the order using hot
and fresh menu components from the holding bins. This
allows for operators to serve to order, helping increase speed
of service while maintaining high product quality standards.
The UHCTHD is ready for operation out of the box, with the
touch screen configured for routine menu configurations.
Power Switch
The power switch is located on the front of the cabinet. Flip
the power switch to turn the unit on or off.
Power Switch on Front
Cabinet Operation
1. Turn the power switch ON.
2. The displays will light and show yellow pre-heat
screens, changing to gray product names when the
cabinet is at temperature.
3. Load product in the appropriate row and press the
associated timer button.
Section 2
Operation

2-2
Operation Section 2
User Interface
PASSWORD
• A user can access all necessary screens for daily
operation without a password.
• The factory default manager password is 1955.
Press & Go Screen Icons
On the press and go screen are five icons:
• Home
• Row Management
• Clean
• Language
• Temperature
Select the home icon to bring up the home
screen.
Home Icon
Home Screen
From the home menu selecting the Press & Go icon to
return to the press and go screen.
Press & Go Screen
PRESS & GO SCREENS
When the unit is turned on zone pre-heating will begin. The
press and go screen will be displayed.
Press & Go Screen Pre-Heating
The unit will beep signaling that all holding zones are at
set-point and ready for use.
Press & Go Screen
As the trays are loaded, press the product button
associated with the location. Pressing the product
button again within two (2) seconds while it is highlighted
black, will reduce the time by 5 (five) minutes, each time
the button is pressed. This is useful when transferring
products to another location.
Green
Press & Go
Screen Five
Icons

2-3
Section 2 Operation
The numbers on the display are associated with the
locations of the cabinet. They will be highlighted in green
and the product timer will start.
Press & Go Screen with Active Timers
The green portion of the tray timer represents the
remaining time. Each menu item has a programmed
warning time. When the warning time is reached the
elapsed time will fill in with yellow and the alarm will beep.
Timer Reaches the Warning Time
Each menu item has a programmed hold time. When the
timer expires, the corresponding tray timer will turn red,
the alarm will beep and DISCARD! is displayed.
Product Hold Timer Expires
The alarm will beep for 10 seconds. The timer displays time
the product is being held past the programmed hold time.
Tray and food should be removed. Reset the expired tray
timer by selecting it.
When necessary to cancel or reset a timer before the hold
time has expired, select a tray timer to reset. The question
Reset? will pop up Select the green check to reset. Select
the red X to resume.
Reset Pop Up
TRAY SPECIFICATIONS
Use First For Identical Products
When two identical products are active, the one with the
least time remaining will be highlighted in green, the others
in gray. There is no change is countdown or timer behavior.
When the first item is canceled or reset, the next one in
order will turn green.
Use Highlighted Tray First
False Bottom Requirements
• No line below the product name means no false
bottom or wire racks are used in the tray.
• A dashed line below the product name means a wire
rack or a false bottom is used in the tray.
A Group in the Menu
A product in the menu is part of a group if there are
dots underneath it. Swipe a product with dots to choose
another item from the group.

2-4
Operation Section 2
CHANGING DAY PARTS
Touch the row management icon and slide left or right
across the dots, under the daypart menu selection, to
choose a daypart menu by row. There are five dayparts
available (Breakfast, Change Over, Lunch, and two others).
Pressing the daypart icon changes all rows to the same
daypart. When complete, press the back button.
Row Management Icon
Daypart Selection
Active timers are carried over into the new menu. Once
the item is reset the new product will show up. Waiting
is displayed when the menu changes and the zone
temperature is changing but there is still an active timer
in the zone at the old temperature. The shelf is waiting to
warm up to the new temperature until all active timers at
the old temperature are cleared.
New Menu with
Active Timers from Last Menu Highlighted
CHANGING LANGUAGE
Touch the language to change language. The language is
displayed on the language icon.
Language Icon
ECO MODE SCREEN
The individual slots can be put into an ECO mode, which
temporarily lowers the heating temperature, when not in
use
Touch the row management button and touch the ECO
button to put the slot into ECO mode. Press the ECO
button again to exit ECO mode. Press the back button to
exit.
Row Management
Icon
ECO Mode
TURNING OFF SLOTS
The individual slots can be turned off.
Touch the row management button and touch the button
to the right of the slot to turn off the slot. Press the button
again to turn on the slot. Press the back button to exit.
Row
Management
Icon
Row OFF Mode
TEMPERATURE SCREEN
Touch the temperature button to display the upper and
lower temperatures of the slots.
Temperature
Icon

2-5
Section 2 Operation
MENU SCREENS
From the home screen selecting the menu icon brings up
the menu screen.
Menu Icon
On the menu screen are navigation icons.
• The first icon returns to the product list
screen.
• The second icon accesses the group list
screen.
• The third icon accesses the day part edit
screen.
• To return to the home screen select the back
arrow.
Menu, Group, Day Part & Home Navigation Icons
The menu screen lists the products saved in the hot
holding unit. 100 products can be saved.
Menu Screen
To make changes on the three menu pages the passcode
1955 must be entered. Select the lock on the bottom left
of the screen. Enter the passcode 1955 on the pop-up
number pad. If the passcode is accepted the lock icon will
appear unlocked. To return to the home screen select the
back arrow.
If the pages are unlocked, the delete, edit and add icons
will display on the menu screen.
Unlocked, Delete, Edit & Add Icons
Delete a Product
Select the unwanted product and then the delete icon by
pressing the X button. A confirmation widow will pop up.
Select the green check to delete the product. Select the red
X to return to the menu screen.
Delete Product Confirmation Window
Edit or Adding a Product
To add a product, select an unused product location in the
list and press the + button.
To edit a product, select the product and press the pencil
icon.
When a product is edited or added, required specifications
include:
• Name: Product Name
• Hold Temp: tray temperature maintained ±5°F
• Hold time: maximum time product can be held &
served. Enter time in hours, minutes and seconds
00:00:00.
• Warning time: alarm will sound when the tray has this
length of time remaining. The elapsed time on the timer
bar changes color from green to yellow.
• Lid type: None, Solid or Vented
• Bottom type: Normal or False(with a tray)
• Zone Splits: 1/3 = 1/3 size pan, 1/2 = 1/2 size pan, 2/3 =
2/3 size pan and 1- a full row or a full size pan.

2-6
Operation Section 2
To edit a field select the field.
Editing temperatures and times uses the touchpad. When
finished press the return arrow to exit to last screen.
Save the edit or product addition by selecting the check.
Select the X to cancel edits and return to product list.
Product Edit or Addition Screen
Edit or Adding Groups
Groups of products can be defined. The products must
have the same lid type, zone split and hold temp. Hold
time, warning time and product temp and can vary within
a group.
From the menu screen, select the group icon. The group
page lists programmed groups. For the highlighted group,
group ID, group name, hold temperature, zone split, lid
type and products included in the group are listed.
Group Icon
Group Screen
If the group page is unlocked, the delete, edit and add
icons will display on the group screen.
Unlocked, Delete, Edit & Add Icons
Select the unwanted group and then the delete icon, X. A
confirmation widow will pop up. Select the green check to
delete the group. Select the red X to return to the group
screen.
Delete Group Confirmation Window
Select the group to be edited and the edit icon, a pencil. In
the pop up window the group will appear. The group name
can be edited and products can be added or removed.
Click inside the name box and a keyboard will appear.
When the group name is edited select the return key
(bottom right).
Pop Up Keyboard
Under the name are the group specifications. Only
products that match will be highlighted and available for
adding.
• Select a new product for the group and the green arrow
to add it.
• Select an existing product in the group and the red
arrow to remove it.

2-7
Section 2 Operation
• To select the default product for the group (product to
be displayed when the day part is selected), press and
hold that product button for three seconds.
• While the unit is in the Press & Go mode the names can
be scrolled from left to right in the same order as they
are listed in the group top to bottom. Delete products
and add them back in to create the desired order.
When the edits are compete return to the group screen by
selecting the X in the top left corner.
To add a group, select the group page add icon, +. A pop up
window will appear. Click inside the name box and use the
keyboard to enter the group name. Select the return key
(bottom right) and the keyboard will close.
NOTE: Name groups so they are recognizable as groups,
perhaps starting with G or Group. When editing the day
parts to add the group, the name is all that is displayed in
the scrolling list. If it does not stand out as a group it will
appear as just another product.
Pop Up Keyboard
Select a product for the group and the green arrow
to add it. That first product will determine the group
specifications, listed under the group name. Going forward
product with the wrong specifications, not available to be
added to the group, will be grayed out. Continue to add
products to the group. To remove a product, select it and
the red arrow.
When the group is complete save it and return to the group
screen by selecting the X in the top left corner.
Edit or Adding Dayparts
On the menu screen are navigation icons. Next to the back
arrow is the day part edit icon.
Day Part Edit Icon
Select the day part edit icon and the breakfast products
appears first. Swipe the screen to move between different
dayparts (example: breakfast to lunch/dinner).
Breakfast Products
To delete a product from a zone press and hold the
product button for three seconds. A pop-up window
confirms the request to delete. Products delete from right
to left.

2-8
Operation Section 2
Select a hot holding zone by quickly pressing the empty
zone to add a product or change the product. From the
pop up window select the product to be added to the
zone. Groups can also be added. Zone split and zone
temperatures will eliminate certain products. Products not
available will be grayed out. Select the green check to save
and return.
Selecting A Product For Breakfast
SETTING SCREENS
From the home screen selecting the settings icon brings
up the preferences screen. This is the first of eleven setting
screens. There are eleven solid dots across the bottom
of the service screens, the empty circle represents the
current page. Touch the dots to bring up a menu. Select
and navigate to a specific screen from the menu. Navigate
between the screens by swiping the screen to the right or
left.
Settings Icon
Row of Dots
PREFERENCES SCREEN
• Use First – When checked the first tray of common
product will be highlighted in green, second tray will
be gray until the first tray is gone or time runs out.
Unchecked, both trays of the common product will be
green.
•
• Font size can be adjusted between 24-48.
• Volume can be adjusted between 10-100.
• Temperature unit - Select Fahrenheit or Celsius
• Select the green check to implement changes, red cross
to discard.
DATE & TIME SCREEN
To make changes on the this screen a passcode must be
entered. Select the lock on the bottom left of the screen.
Enter a passcode on the pop-up number pad. If the
passcode is accepted there will be a yellow ring around the
screen.
Date & Time Screen
• If the NTP box is checked and the UHCTHD unit is
connected to the internet , the date and time will be set
automatically. Be sure to set the UTC to the appropriate
setting (i.e. Eastern Standard time is UTC -5:00, Central
Time is UTC -6:00).
If the UHCTHD unit is not connected to the internet or
if the NTP box is unchecked the time and date will need
to be set manually.
• Top right of the screen provides the choice between a
24hr/military and AM/PM civilian time display.
• Select the month and year by the arrow heads and the
date via the calendar.
• If the DST enabled box is checked the time on the clock
will be moved ahead by 1 hour. If the box is checked
and then unchecked the time on the clock will move
back one hour. Proper use of this feature is to check
the box on the first day of daylight savings time and
uncheck the box on the day after daylight savings time
ends.

2-9
Section 2 Operation
• Time Zone - Use the drop down box to select the time
zone the equipment is being used in. This only has an
effect on the date and time setting if the Use NTP box is
checked.
LANGUAGE SCREEN
Language Screen
Available languages are listed to choose from. Store or
company created menu items will not change to the new
language. Only the headings and descriptions will change
to the new language (i.e. service page titles, calendar
month names, product parameters, and menu page titles).
Check the desired languages from this list to allow multiple
languages to be toggled from the language icon on the
main screen.
DAYPART SCREEN (NEEDS NEW SCREEN SHOT)
Daypart Screen
Available dayparts are listed to choose from. Ensure the
dayparts desired are checked. Press the green check when
finished.
ZONE DIAGNOSTICS SCREENS
Holding cabinet temperatures can be monitored on this
screen, no password is required to observe current heating
element temperatures.
To run service tests on the this screen a service passcode
must be entered. Select the lock on the bottom left of the
screen. Enter a service passcode on the pop-up number
pad. If the passcode is accepted there will be a yellow ring
around the screen.
Zone Diagnostics Screen
Zone diagnostic screen shows set temperature and current
unit temperature for each heating element. Current
temperature will be highlighted green if +/- 5°F (+/- 3°F) of
the set temperature. Current temperatures are highlighted
red if hotter than and blue if colder than set temperature.
1. Test the machine by changing set temperatures. The
screen will have a red border while the testing.
-Select Service Test to change the set temperatures
to factory determined test temperatures.
OR
-Touch the a zone set temperature, highlighted in
white. On the displayed numeric key pad, enter the
desired temperature then touch the green check.
Note: Entering a temperature of 360 deg F or higher
will cause the heating element to be ON all the
time. Entering a temperature of zero deg F will turn
the heating element OFF. The set temperature of
both heating elements in the zone will be set to the
same temperature.
2. Select Cancel Test when complete, the screen border
will change to yellow.

2-10
Operation Section 2
SOUND & SCREEN TESTS
This screen does not require a passcode.
Sound & Screen Tests
Screen is for testing sound and screen function.
Three beeps should sound when the speaker icon is
selected.
When the screen icon is selected three screens will cycle to
help diagnose screen function.
UI Customization button not available to users.
ERRORS LOG SCREEN
This screen does not require a passcode.
Errors Log Screen
Clear all button removes all entries on the errors log
screen. Clearing the error log requires a service passcode.
Touching the Refresh button will update the error list.
Swiping away from this page and then swiping back will
also refresh the error log list with any new errors.
PASSWORD SETTINGS SCREEN
Password Settings Screen
There is a factory default manager passcode 1955. It can be
changed on the password service screen. Select the open
box after Manager’s: and a new pin # number pad will pop
up. Enter the new manager’s passcode and the green check
to confirm.
New Pin # Number Pad
To reset the passcode back to the factory default quickly
touch the easy touch logo 10 times in a row in any of the
settings screens. At the end of 5 taps the menu bar will
turn black, continue to tap. A pop up display will confirm
the manager’s pin # was reset.
Easy Touch Logo

2-11
Section 2 Operation
SYSTEM INFORMATION SCREEN
This screen does not require a passcode, there are no
actions available on this screen.
System Information Screen
This screen lists the cabinet serial number, model number
and current firmware versions.
UTILITIES SCREEN
To run demo mode on the utility screen a service passcode
must be entered. Select the lock on the bottom left of the
screen. Enter a service passcode on the pop-up number
pad. If the passcode is accepted there will be a yellow ring
around the screen.
The demo mode will turn off all heaters and simulates
operation at a lower amp draw. The unit will continue in
Demo mode until returned to normal operation via this
screen, regardless of being powered off and on.
Export Menu Files - Remove the USB port cover. Plug a USB
drive into the master/external port. Press the Export Menu
Files button. Restart unit.
Import Menu Files - Remove the USB port cover. Plug a USB
drive with exported menu files into the master/external
port. Press the Import Menu Files button. Unit will only
look for and import a file type that was exported from the
utilities screen.
Cancel All Holding - If a tray with an active timer is removed
and not returned to the unit, the active timer information
will be stored in memory. Service may push the Cancel All
Holding button to clear unnecessary information from the
memory.
Platform Info - A pop up screen lists firmware specifications
including Linux kernel and board support package, etc.
Utilities Screen

3-1
DANGER
All utility connections and fixtures must be maintained
in accordance with Local and national codes.
DANGER
Failure to disconnect the power at the main power
supply disconnect could result in serious injury or death.
The power switch DOES NOT disconnect all incoming
power.
DANGER
Disconnect electric power at the main power disconnect
for all equipment being serviced. Observe correct
polarity of incoming line voltage. Incorrect polarity can
lead to erratic operation.
,Caution
Maintenance and servicing work other than cleaning as
described in this manual must be done by an authorized
service personnel.
Section 3
Maintenance
Component Identification
Power Switch
12VDC
Power
Supply
Communication
Dongle
Line Filter
Cooling Fan
Speaker
I/O board
RTD
Leads
Heater Power
Leads
Circuit Breaker
Power Relay
USB
Primary UI
or
Controller
Secondary UI
or
Controller

3-2
Maintenance Section 3
INSTRUCTIONS FOR REPLACING A HEATER PAD
Pad heater probes are located in the heater pad assembly.
NOTE : Failed RTD’s require a heater pad replacement.
1. Disconnect the power.
2. Remove the four (4) screws that attach the top of the
cabinet.
3. Remove both sides, by removing the two (2) Phillips
head screws at the bottom of the each side panel and
sliding up and away from the cabinet.
4. The power and RTD wires are visible on the left side.
5. Bolts secure the framework that holds the heater
plates; Allen screws secure the bezels. The complete
slot assembly must be removed to replace the heater
plate.
6. A third fastener, a small screw also secures the bezel.
It must be removed to get to the heater plate.
7. RTD probe connections (brown and red) are at the
bottom of the IO board. Heater plate connections
(white and blue) are at the top of the IO board. Mark
plugs for reassembly. Pay close attention to their
placement. Unplug heaters and probes associated
with the slot.
8. Raise heater plate and slide out the insulation under
the plate to gain access to heater pad.
9. Route the power coupling through the cabinet interior.
10. Pull the heater plate out carefully.
11. Flip the aluminum plate over. Peel the old heater pad
off and attach the new one.
12. Reverse the steps to reassemble the cabinet.
RTD
Leads
Power
Heater
Plate
Leads

3-3
Section 3 Maintenance
INSTRUCTIONS FOR REPLACING A TOUCH SCREEN
1. Disconnect the power.
2. Remove the top of the cabinet.
3. Disconnect any cables or wires from the rear of the
touch screen, marking their position for reassembly
4. Remove and replace the faulty touch screen.
5. Remove the SD card from the failed controller by
gently pushing in on the SD card and releasing until it
is SD card is ejected. The SD card is held in by a spring
lock.
6. If the new controller has an SD card in place, remove
it and insert the SD card removed from the failed
controller in previous step and insert with contact
down towards the board. Gently push the SD card into
the SD card slot until it locks in place.
7. Reattach any cables or wires and attach the top of the
cabinet.
8. Reconnect power.
9. Perform a setup by entering the serial, model and
store number into the controller.
INSTRUCTIONS FOR REPLACING AN IO BOARD, FAN,
RELAY, SWITCH, SPEAKER, POWER SUPPLY, LINE FILTER
OR OTHER COMPONENTS IN THE ELECTRONICS BOX
1. Disconnect the power.
2. Remove the top of the cabinet.
3. Mark wires and harnesses locations for easy reassembly.
4. Disconnect wires and harnesses.
5. Remove the existing parts.
6. Carefully reattach all wires and harnesses.
7. Replace the cabinet top.
8. Reconnect to power to return to service.
INSTRUCTIONS FOR UPDATING SOFTWARE
1. With the cabinet powered up and fully booted up, slide
the USB cover open and insert the USB drive in the front
of the cabinet.
2. After 30-60 seconds the software update starts.
3. When the software update is complete the controller
displays Firmware Update Successful, Please Restart
the Equipment when complete.
4. Remove the USB from the front of the cabinet.
5. Power cycle the entire cabinet.
6. Press the button. Press the button. Swipe two
times to the right to System Information. Verify the
UI and IO Board software versions are correct on both
displays.
7. Press the button.
8. Press the button.
INSTRUCTIONS FOR EXPORTING/IMPORTING FILES
USING A USB DRIVE
EXPORTING FILES
1. Select the home icon to bring up the home screen.
Home Icon
Home Screen
2. From the home menu select the settings icon.
Settings Icon
The preferences screen is displayed.