Taylor QS24 Service Manual

Models QS12 & QS24

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Table of Contents

Table of Contents

Section 1: Introduction

Safety
Model QS Series Specifications

Section 2: Controls and Systems

Control Operations
QS Series Control
Maintenance Menu Flowchart
Gapping Procedures
Mechanical-Electrical Checkout

Section 3: Troubleshooting

General Troubleshooting Guide
Troubleshooting Flow Charts
Meat Quality Troubleshooting

Section 4: Parts

Warranty Explanation
QS Series Operator Parts Exploded View
QS12 Lower Grill Assembly X79255-
QS24 Lower Grill Assembly X78755-
Box A-Remote Key Pad (X78579)
Front of Lower Grill Assembly
Box A-Relay (X78757)
Pivot A-Platen Complete (X78758)
Upper Platen Assembly (X78794-)

Heater Elements - Lower Grill
Parts List
Wiring Diagrams

CAUTION: Information in this manual is intended to be used by Taylor Authorized Service
Technicians only
Note: Continuing research results in steady improvements; therefore, information in this manual is
subject to change without notice

© June, 1997 Taylor

All rights reserved

Safety

We at Taylor Company, 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.

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.

This manual is intended exclusively for Taylor Company authorized
service personnel.

Model QS Series Specifications

Electrical

QS12 Electrical Cord Connected

208-240/50/60/3 Total Amps Supplied With KW

With Platen 22.0 30 amp cord 8.4

Flat 22.0 60 amp cord 8.4

With one platen 33.0 60 amp cord 12.6

With two platens 44.0 60 amp cord 16.8

Available in electric only. Other electrical characteristics are
available. (For exact electrical information, always refer to the
data plate of the unit.)

QS24 Electrical Permanently Connected

208-240/50/60/3 Total Amps Requires KW

NEMAL15-30P

IEC309-1 &-2

IEC309-1 & -2

IEC309-1 & -2

Dimensions

Approximate Weights

QS12 (One Platen)

Net: 265 Ibs. (120.2kgs.)
Crated: 306 Ibs. (138.8 kgs.)

QS24 (Flat)

Net: 210 Ibs. (95.3 kgs.)
Crated: 275 Ibs. (124.7 kgs.)

QS24 (One Platen)

Net: 305 Ibs. (138.3 kgs.)
Crated: 370 Ibs. (167.8 kgs.)

QS24 (Two Platens)

Net: 400 Ibs. (181.4 kgs.)
Crated: 465 Ibs. (210.9 kgs.)

12.4 cu.ft. (0.35 cu. m.)

22.0cu.ft. (0.62 cu.m.)

Air Clearance

QS12 Width: 12" (30.5 cm.)

QS24 Width: 24" (60.9 cm.)

Depth: 35-1/2" (90.2 cm.)

Height: 15-3/8" (39.1 cm.) to the top of the back

splash shield.

20" (50.8 cm.) with the optional upper

platen lowered.

Control Operations

Rocker (Power) Switch

Keypad and Display

When placed in the ON position, the rocker switch allows control
panel operation. The power switches are located on the front
panel.

Indicator Light

The lights on the front panel indicate when the heaters are
operating.

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.

Release Material (units with upper
platens only)

Release material completely covers the upper platen cooking
surface. To attach the release material, insert thetwo metal rods
through the envelopes on each side of the release material. Put
the release material into position and fasten the rods using the
springs to secure the material into position.

Located on the front panel, beneath each cooking zone, is an
alpha-numeric LED display and a group of keypads used for
operating, programming, and servicing the grill and its
microprocessor control.

The keypads are illustrated with icons, descriptive of their
functions, and referred to in these instructions as follows:

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

This unit is equipped with a microprocessor control,
programmable by the operator.

The display is a visual message center for the user, operator
(maintenance personnel or manager), and the service technician.

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 2.03

SU1 400

Press the UP or DOWN arrows to adjust the temperature for the
upper surface. Once the desired temperature is displayed, press
MENU and the message "SL1 325" will appear on the screen.

Note: If the grill is not equipped with the upper platen option, the
words "NO CLAM" will appear on the display for two seconds
before the version screen appears.

Pressing any keypad will advance the display to the COOKING
SCREEN. These screens are described in the "Operating
Procedures" section of these instructions.

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 prog rammed 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°F TMR1 30 Lower 325° F
TMR2 0

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°F for the upper platen,
and 325° F for the lower platen. The upper heater can be
setfrom150°F to 425° F. The 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.

SL1 325

Press the UP or DOWN arrows to adjust the temperature for the
lower surface.

Once the desired temperature is displayed, press MENU and the
screen will return to the normal cook menu screen.

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 one has been programmed to cook for 30
seconds. The operator wishes to add salt in the middle of the
cook cycle. Timer two should then be programmed for 15
seconds. 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 lowerthe 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.
Atone 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 forthe 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 "TMR1" will appear next to the current
time setting.

TMR130

Step1

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 "TMR2" will appear next to the current
time setting.

TMR20

Step3

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.

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 defective

TCUM Upper Mid thermocouple defective

TCUR Upper Rear thermocouple defective

TCLF Lower Front thermocouple defective

TCLM Lower Mid thermocouple defective

TCLR Lower Rear thermocouple defective

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 particular heater that
experiences the fault will shut off while the rest of the grill is
operable.

Maintenance Menu

The Maintenance Menu provides three 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.

Fault Screen

If the grill experiences a system failure, a fault message will
appear on the display.

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:

CODE 0000

Press TIME until the first digit is "5".
Example: CODE 5000.

Press TEMP 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.

Note: If an incorrect code is entered, the display will return to the
COOKING screens.

CALIBRAT

Step 4

Repeat this procedure for the remaining upper, back, and lower
elements. When the last zone has been calibrated, press MENU
to return to the CALIBRAT screen.

Step-1
Press the MENU key pad to enter the calibrate mode and the
following message will appear on the screen.

U FXXXF

Note: Calibration is allowed only when the Item 1 temperature is

within 50° F (10°C) of the set point.

There are three lower heating elements in each cook zone and
three heating elements in the 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 forthe upperfront heating element.

Note: The indicating lights should be lit when calibration
adjustments are made.

Steps
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.

Slept

Press MENU to display SCALE F.

Step 2
Press the UP arrow keypad to choose the Fahrenheit or the
Celsius temperature scale:

SCALE F or C

Step 3

If Fahrenheit is the desired temperature scale, press the MENU
keypad. If Celsius is desired, press the UP arrow.

Step 4
Press the MENU keypad to return to the SCALE message.

Step5
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 the UP arrow to display the
"NAMES" message.

Step3
Press MENU 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 temperature is
within 50° F (10°C) of the set point.

NAMES

Step 6

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 7

Press the MENU keypad again, and the message "ITM1" will
appear on the display. The letter "I" will be flashing above the
cursor.

ITM1

Steps
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 9

After the last character has been entered, press the MENU
keypad to return to the message "NAME1".

Step 10
Use the UP arrow keypad to display the NAME2.

Repeat steps 6-9 until all item names have been entered.

Pressing the MENU and TEMP keypads at the same time will
return the display to the item number or name last displayed on
the screen.

QS Series Control

Maintenance Menu Flowchart

Gapping Procedures

The gapping procedure is necessary to level the upper cooking
surface. The procedure should be performed during grill
installation and any time that the cook surface appears uneven.

Step 1

The gapping adjustment needs to be performed while the grill is
at operating temperature. Remove the platen 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.

Step3

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.

Step6

Step 4

For each grill surface requiring adjustment, place 4 gap blocks on
the grill surface, approximately 2" in from each corner. Slide the gap
slide to the right.

Figure 5.

Step5

Lower the platen assembly. Loosen and slowly move the T-handle
to the left until the gap slide plates touch the grill surface, and
tighten the T-handle.

Wearing proper protection, carefully attempt to raise the gap slide
plate to evaluate which gap pin is in need of adjustment.

With the gap slide plate raised, slowly turn the gap pin needing
adjustment until it makes contact with the grill surface. Repeat

these steps for both gap slide plates.

Step 7

Raise the platen arm and remove the four gap blocks.

Step 8
Lower the platen arm into the COOK position.

Step 9

Wearing proper protection, attempt to rock the platen assembly.
Apply pressure on the thumb screws at opposite corners to each
other as shown in Figure 8.

Step 10
If the unit rocks, adjust the gap pins slightly across the uneven
corners, as shown in Figure 9.

Note: If adjustment is needed, split the adjustment between the gaps
in need.

Step 11
After adjusting, verify the unit for stability.

Step 12
If all adjustments on the platen are correct, and no rocking occurs,
tighten the two screws located on the side of the front and rear gap
slide plate to lock all adjustments from moving.