Taylor QS12 User manual

Models QS12 & QS24
Grills
Service Manual
050559-S
9/1/00

Models QS12/QS24 Table of Contents
Table of Contents
Section 1: Introduction 1...............................................
Safety 2.............................................................
Model QS Series Specifications 4.......................................
Section 2: Controls and Systems 7......................................
Control Operations 8..................................................
QS Series Control 14...................................................
Maintenance Menu Flowchart 15.........................................
Leveling Procedures 16.................................................
Release Material Installation 19..........................................
Mechanical-Electrical Checkout 20.......................................
Section 3: Troubleshooting 21...........................................
General Troubleshooting Guide 22.......................................
Control Board and Terminal Cleaning 23..................................
Troubleshooting Flow Charts 24.........................................
Product Quality Troubleshooting 30......................................

Table of Contents Models QS12/QS24
Table of Contents -- Page 2
Section 4: Parts 31......................................................
Warranty Explanation 32................................................
QS12 Service Parts Exploded View 33....................................
QS12 Operator Parts Exploded View 34..................................
QS24 Service Parts Exploded View 35....................................
QS24 Operator Parts Exploded View 36..................................
QS 12 & QS 24 Carts 37................................................
Box A.-Remote Key Pad (X78579) 38....................................
Front of Lower Grill Assembly 39.........................................
Box A.-Relay (X74036) 40..............................................
Pivot A.-Platen Complete (X78758) 42....................................
Upper Platen Assembly (X78794) 44.....................................
Heater Elements - Lower Grill 46.........................................
Parts List 47...........................................................
Wiring Diagrams 53....................................................
Note: Continuing research results in steady improvements; therefore, information
in this manual is subject to change without notice.
CAUTION: Information in this manual is intended to be used by Taylor Authorized
Service Technicians only.
ESeptember, 2000 Taylor
All rights reserved.
050559--S
The word Taylor and the Crown design
are registered trademarks in the United States
of America and certain other countries.
Tayl or
a division of Carrier Commercial Refrigeration, Inc.
750 N. Blackhawk Blvd.
Rockton, IL 61072

1
Models QS12/QS24 Introduction
Section 1: Introduction
SSafety
SModel QS Series Specifications

2
Introduction Models QS12/QS24
070706
Safety
We at Taylor are committed to manufacturing safe
operating and serviceable equipment. The many
built-in safety features that are part of all Taylor
equipment are aimed at protecting operators and
trained service technicians alike.
This manual is intended exclusively for Taylor
authorized service personnel.
To avoid personal contact with hot grill
surfaces or grease, always use extreme
caution when servicing, installing,
operating, and cleaning the grill.
Warning labels have been attached or
adhered to the grill to further stress
safety precautions. Please follow the
instructions indicated on such labels.
CAUTION!
SDO NOT operate the grill before reading the
Operator’s Manual.
SDO NOT allow untrained personnel to
operate this machine.
SAlways follow general safety precautions
when servicing or operating the grills.
Failure to follow these instructions may result in
equipment damage, poor grill performance, health
hazards, or personal injury.
This unit is provided with a grounding lug that
is to be properly attached to the rear of the frame by
the authorized installer. The installation location is
marked by the symbol on the removable panel
and the frame.
SDO NOT operate the grill unless it is
properly grounded.
SDO NOT operate the grill with larger fuses
than specified on the data label.
SDO NOT operate the grill unless all service
panels are restrained with screws.
SDO NOT attempt any repairs unless the
power supply to the grill has been
disconnected.
SDO NOT use the cord if it is frayed.
SStationary appliances which are not
equipped with a power cord and a plug or
other device to disconnect the appliance
from the power source must have an
all--pole disconnecting device with a contact
gap of at least 3 mm installed in the external
installation.
Failure to follow these instructions may result in severe
personal injury from electrical shock.
DO NOT use a water jet to clean or rinse the
grill. Failure to follow this instruction may result in the
following:
Sserious electrical shock
Sburns from hot steam
Sliquid collecting inside the grill and
destroying electrical components.

3
Models QS12/QS24 Introduction
050815
SDO NOT store flammable vapors, liquids, or
combustible material in the vicinity of the
grill.
SThe grills must be kept at least 3” (76 mm)
from combustible materials.
Failure to follow these instructions may result in a fire.
SDO NOT prepare or remove product without
the proper equipment.
SUSE EXTREME CAUTION when cleaning
the grill.
The grill is hot and can burn the operator if not handled
properly.
DO NOT slide the grill with the legs attached.
Failure to follow this instruction may damage the grill
or cause personal injury.
DO NOT obstruct air intake and discharge openings:
4” (102 mm) minimum air clearance on the bottom and
3” (76 mm) at rear of the unit is required to allow for
adequate air circulation. Failure to comply will hinder
grill performance and cause damage to its
components.
NOISE LEVEL: Airborne noise emission does not
exceed 70 dB(A) when measured at a distance of 1.0
meter from the surface of the machine and at a height
of 1.6 meters from the floor.
If the crossed out wheeled bin symbol is
affixed to this product, it signifies that this product is
compliant with the EU Directive as well as other similar
legislation in effect after August 13, 2005. Therefore,
it must be collected separately after its use is
completed, and cannot be disposed as unsorted
municipal waste.
The user is responsible for returning the product to the
appropriate collection facility, as specified by your local
code.
For additional information regarding applicable local
laws, please contact the municipal facility and/or local
distributor.

4
Introduction Models QS12/QS24
Model QS Series Specifications
Electrical
QS12 Electrical Cord Connected
208-240/50/60/3 Total Amps Supplied With KW
With Platen 27.0 30 amp cord
NEMA L15-30P
9.6
QS24 Electrical Permanently Connected
208-240/50/60/3 Total Amps Requires KW
Flat 30.0 60 amp cord
IEC309-1 & -2
10.8
With one platen 42.0 60 amp cord
IEC309-1 & -2
15.0
With two platens 53.0 60 amp cord
IEC309-1 & -2
19.2
Available in electric only. Other electrical
characteristics are available. (For exact electrical
information, always refer to the data plate of the unit.)
Disconnect Switch
If the unit has no plug, a separate disconnect switch
must be installed, or another alternate means to
disconnect power must be implemented.
Dimensions
QS12 Width: 12” (305 mm)
QS24 Width: 24” (609 mm)
Depth: 35-1/2” (902 mm)
Height: 15-3/8” (391 mm) to the top of the
back splash shield.
20” (508 mm) with the optional
upper platen lowered.
Approximate Weights
QS12 (One Platen)
Net: 265 lbs. (120.2 kgs.)
Crated: 306 lbs. (138.8 kgs.)
12.4 cu. ft. (0.35 cu. m.)
QS24 (Flat)
Net: 210 lbs. (95.3 kgs.)
Crated: 275 lbs. (124.7 kgs.)
QS24 (One Platen)
Net: 305 lbs. (138.3 kgs.)
Crated: 370 lbs. (167.8 kgs.)
QS24 (Two Platens)
Net: 400 lbs. (181.4 kgs.)
Crated: 465 lbs. (210.9 kgs.)
22.0 cu. ft. (0.62 cu. m.)
Air Clearance
These grills require a minimum of 4” (102 mm)
on the bottom of the unit and 3” (76 mm) from the rear
of the unit to allow for adequate air circulation. Failure
to comply with these dimensions will hinder grill
performance and cause damage to its components.
Multiple QS Series grills may be stored side by side.
The QS Series grills must be kept at least 3”
(76 mm) from combustible materials. Failure to comply
will result in a fire hazard.
These units are designed and constructed to meet
stringent safety and sanitation requirements for NSF
and other food service regulatory agencies.
Specifications are subject to change without notice.

5
Models QS12/QS24 Introduction
040715
Model QS12 Specifications
Model QS24 Specifications

6
Introduction Models QS12/QS24
Notes:

7
Models QS12/QS24 Controls and Systems
Section 2: Controls and Systems
SControl Operations
SQS Series Control
SMaintenance Menu Flowchart
SLeveling Procedures
SRelease Material Installation
SMechanical-Electrical Checkout

8
Controls and Systems Models QS12/QS24
Control Operations
Rocker (Power) Switch
The rocker (power) switch, when placed in the ON
position, allows control panel operation. The power
switches are located on the front panel next to the
keypad display.
Indicator Light
The lights on the keypad display indicate when the
heaters are operating, per platen and plate. (See
Heating Zones.)
Heating Zones
Each half of the lower (12”) cook surface is referred to
as a zone. Each upper cook surface is referred to as
a platen. Within each zone and platen are three
independent electrical heating elements. The
elements operate independently to assure an even
temperature throughout the cooking surfaces.
Temperature Controls
Each 12” grill surface is equipped with individual
temperature controls. The lower cooking surface
temperatures can be set manually from 150_- 400_F
(65_- 204_C). The upper platen cooking surface
temperatures can be set manually from 150_- 425_F
(65_- 219_C). The left and right sides (zones) of the
grill operate independently.
Control Board
These units are equipped with one microprocessor
control per 12” of cook surface, which is programmable
by the operator. The QS12 has one 12” cook surface
and one control board. The QS24 has two 12” cook
surfaces and two control boards.
Keypad and Display
Located on the front panel beneath each cooking zone
is an alpha-numeric LED display and a group of keys.
These are used for operating, programming, and
servicing the grill and its microprocessor control.
(Note: The QS12 has one cooking zone and the QS24
has two cooking zones.)
MANUFACTURED BY THE TAYLOR COMPANY
ROCKTON, ILLINOIS U.S.A.
4
3
2
1
I
0
UF
UM
UR
LR
LM
LF
MENU
TIME
TEMP UP DOWN
EXIT
R
Figure 1
ITEM DESCRIPTION
1Power Switch
2Keys
3LED Display
4Indicator Lights
5Timer Button
The keys are illustrated with icons, descriptive of their
functions, and referred to in these instructions as
follows:
=MENU
=TIME
= TEMP (Temperature)
= UP ARROW
= DOWN ARROW
The display is a visual message center for the user,
operator (maintenance personnel or manager), and
the service technician.

9
Models QS12/QS24 Controls and Systems
Operating Screen and Controls
The VERSION SCREEN is viewed when a grill is
powered for normal operation. It indicates the version
of software the microprocessor is using.
VER 2.00
Note: If the grill is not equipped with the upper platen
option, the words “NO PLTN” will appear on the display
for two seconds before the version screen appears.
The MEMORY INITIALIZATION SCREEN appears if
the grill has never been used or in the rare event that
set-up parameter memory has been lost.
MEM INIT
When this screen appears on the display, the
parameters previously programmed by the operator
will revert back to the factory default values. Pressing
any keypad will advance the display to the VERSION
screen.
Factory Defaults:
Upper 400_FTM130
Lower 325_FTM20
If set-up parameter memory is lost, programmed
names will revert back to the “ITEM” message.
After the VERSION SCREEN is displayed and a
keypad is pressed, the grill will enter the COOK mode
of operation.
Cook Temperatures
Each item has two programmable cook temperatures.
The first temperature is for the upper platen (SU1 400).
The second temperature is for the lower surface
(pertaining to that side on the QS24) (SL1 325).
Note: Factory default settings are 400_Fforthe
upper platen, and 325_F for the lower platen. The
upper heater can be set from 150_F to 425_F. T he
lower heater can be set from 150_F to 400_F.
To adjust the heaters for a particular item, scroll to that
item. Press and hold the TEMP keypad for five
seconds. Release the keypad and the message “SU1
400” will appear.
SU1 400
Press the UP or DOWN arrows to adjust the
temperature for the upper surface. Once the desired
temperature is displayed, press the MENU keypad
and the message “SL1 325” will appear on the screen.
SL1 325
Press the UP or DOWN arrows to adjust the
temperature for the lower surface.
Once the desired temperature is displayed, press the
MENU keypad and the screen will return to the normal
cook menu screen.

10
Controls and Systems Models QS12/QS24
Cook Timers
Each item selection has two programmable cook
timers. The first timer is the cook cycle timer. This timer
measures the amount of time the product should be
cooked.
The second timer is an alert timer. This timer can be
set to alert the operator to add seasonings, to turn the
product, or to start warming buns for the cooked
product.
For example, Item 1 has been programmed to cook for
30 seconds. The operator wishes to add salt in the
middle of the cook cycle. Timer 2 should then be
programmed for 15 seconds. When the cook cycle
starts, a tone will sound for two seconds to alert the
operator that the cook cycle has begun. Once the cook
cycle begins, a tone will sound 15 seconds after the
first timer starts. This tone alerts the operator to raise
the platen, season the product and lower the platen to
complete the cycle. Press the timer keypad to stop the
tone. The first timer will continue to measure the full 30
second cook cycle. A tone will sound 5 seconds before
the time elapses, and will continue to sound until the
timer keypad has been pressed.
Note: The factory default settings are 30 seconds for
the first (cook cycle) timer, and 0 seconds for the
second (alert) timer. The timers can be set from 0 to
3,600 seconds. The second timer cannot be
programmed for a longer time setting than the first
timer.
To adjust the timers for a particular item, scroll to that
item. Press and hold the TIME keypad for five
seconds. Release the keypad and the message “TM1”
will appear next to the current time setting.
TM1 30
Step 1
Press the UP or DOWN arrows to adjust the time
setting for the total cook cycle.
Step 2
Once the desired cook time has been set, press the
MENU keypad and the message “TM2” will appear
next to the current time setting.
TM2 0
Step 3
Press the UP or DOWN arrows to adjust the time
setting for the alert timer (timer 2).
Step 4
Once the desired alert timer has been set, press the
MENU keypad, and the screen will return to the normal
cook menu screen. If timer 2 is not needed, set it at “0”.
Fault Screen
If the grill experiences a system failure, a fault
message will appear on the display and a tone will
sound.
FLT HTUM
An example of the FAULT SCREEN is illustrated in the
previous figure. The screen appears when the
controller has detected a fault in the system. The code
letters “FLT” is an abbreviation for “fault”. The next set
of code letters indicate the type of fault and the zone
affected. Following is a list of possible codes that may
appear on the screen:
HTUF High Temperature Upper Front zone
exceeded
HTUM High Temperature Upper Mid zone exceeded
HTUR High Temperature Upper Rear zone exceeded
HTLF High Temperature Lower Front zone
exceeded
HTLM High Temperature Lower Mid zone exceeded
HTLR High Temperature Lower Rear zone exceeded
TCUF Upper Front thermocouple fault
TCUM Upper Mid thermocouple fault
TCUR Upper Rear thermocouple fault
TCLF Lower Front thermocouple fault
TCLM Lower Mid thermocouple fault
TCLR Lower Rear thermocouple fault
The user must press the MENU and TEMP keypads
to acknowledge the fault. The fault description and
item name will appear alternately on the display. The
zone that has the fault will shut down while the rest of
the grill will be operational.

11
Models QS12/QS24 Controls and Systems
Maintenance Menu
The Maintenance Menu provides five screens to allow
managers and service technicians to monitor grill
performance.
To enter the Maintenance Menu while any item is
displayed, press and hold the MENU keypad for
approximately 5 seconds and release. The following
screen will appear on the display:
CODE 0000
Press the TIME keypad until the first digit is “5”.
Example: CODE 5000.
Press the TEMP keypad until the next digit is “3”.
Example: CODE 5300.
Press the UP Arrow until the next digit is “7”.
Example: CODE 5370.
Press the DOWN Arrow until the last digit is “6”.
Example: CODE 5376.
Press the MENU keypad to accept the access code.
The following screen will appear on the display:
Note: If an incorrect code is entered, the display will
return to the COOKING screens.
CALIBRAT
Step 1
Press the MENU keypad to enter the calibrate mode
and the following message will appear on the screen.
UFXXXF
Note: Calibration is allowed only when the Item 1
temperatures are within 50_F(28_C) of the set point.
There are three lower heating elements in each cook
zone and three heating elements in the upper platen
(if applicable). The calibrating screens allow
calibration of each independent heating element.
Calibrating verifies proper temperatures of heating
elements.
Note: A calibrated pyrometer must be used for
calibration.
Step 2
Place the pyrometer disc on the upper front heating
element of the grill. Using the arrow keypads, enter the
temperature shown on the pyrometer for the upper
front heating element.
Note: The indicating lights should be lit when
calibration adjustments are made.
Figure 2
Step 3
Press the MENU keypad to display the calibration
screen for the upper middle heating element. Place the
pyrometer on the upper middle heating element. Using
the arrow keypad, enter the temperature reflected on
the pyrometer for the upper middle heating element.
Note: Calibration is allowed only when the Item 1
temperatures are within 50_F(28_C) of the set point.
Step 4
Repeat this procedure for the remaining upper rear
and lower elements. When the last zone has been
calibrated, press the MENU keypad to return to the
CALIBRAT screen.
Step 5
Press the UP arrow to display the SCALE message.
Note: The CALIBRAT screen is the base
maintenance screen. All other maintenance
functions are accessible through the CALIBRAT
screen.

12
Controls and Systems Models QS12/QS24
Step 6
Press the MENU keypad to display “SCALE F”.
Step 7
Press the UP arrow keypad to choose the Fahrenheit
or the Celsius temperature scale:
SCALE F or C
Step 8
If Fahrenheit is the desired temperature scale, press
the MENU keypad. If Celsius is desired, press the UP
arrow.
Step 9
Press the MENU keypad to return to the SCALE
message.
Step 10
If desired, the names of specific products can be
programmed to appear on the display instead of ITEM
numbers. While at the SCALE message display, press
theUParrowtodisplaythe“NAMES” message.
NAMES
Step 11
While at the NAMES message display, press the
MENU keypad and the message “NAME1” will appear
on the display. This message indicates that the
operator can program a specific product name to
appear for the first item on the menu.
NAME1
Step 12
Press the MENU keypad again, and the message
“ITM1” will appear on the display. The letter “I” will be
flashing above the cursor.
ITM1
Step 13
Using the UP and DOWN arrow keypads, enter the
desired letter (A - Z) or number (0 - 9) ( -- _ ). Once the
character letter is entered, press the MENU keypad to
move the cursor to the next position. Up to four
characters may be entered.
POM1
PORK
Step 14
After the last character has been entered, press the
MENU keypad to return to the message “NAME1”.
Step 15
Use the UP arrow keypad to display “NAME2”.
Repeat steps 6-9 until all item names have been
entered and the control will return to the message
“NAME1”.
Step 16
After entering the desired characters in the NAMES
screens, the control will return to “NAME1”.
Press the DOWN arrow to display “NAMES”.
Step 17
Press the UP arrow to display “LANGUAGE”, and
press the MENU keypad to display “ENGLISH”.
Press the MENU keypad to return to the“LANGUAGE”
display.

13
Models QS12/QS24 Controls and Systems
Step 18
Press the UP arrow to display “MONITOR”.
Press the MENU keypad to display “UF XXX F” to
monitor the upper front temperature.
Step 19
Continue to press the UP arrow to monitor the
remaining five zones.
Step 20
Press the UP arrow to display “CANCEL”, and press
the MENU keypad to display “MONITOR”.
Pressing the MENU and TEMP keypads at the same
time will return the display to the item number or the
programmed name last displayed on the screen.

14
Controls and Systems Models QS12/QS24
040715
QS Series Control

15
Models QS12/QS24 Controls and Systems
040715
Maintenance Menu Flowchart

16
Controls and Systems Models QS12/QS24
Leveling Procedures
Figure 3
Step 1
The leveling adjustment needs to be performed while
the grill is at operating temperature. Remove the cook
surface shroud and release sheet.
Step 2
To allow adjustment of the gap pins, loosen the two set
screws located on the side of the front and rear gap
slide.
Figure 4
Step 3
Raise or lower both gap pins on the front gap slide until
they are flush with the top edge of the gap slide.
Repeat this step for the rear gap slide. Slide the gap
slide to the right.
Figure 5