Lang Purple Manuel utilisateur
Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203
Part Number: 60850-32 Phone: 425-349-2400 Fax: 425-349-2483
Product Manual
Lang "Purple" Computer
Operation
Service
Troubleshooting
Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203
Part Number: 60850-32 Phone: 425-349-2400 Fax: 425-349-2483
TABLE OF CONTENTS
CONTROL PANEL..........................................................................................................................1
TABLE OF CONTENTS .................................................................................................................2
CONTROL PANEL..........................................................................................................................3
PROGRAMMING............................................................................................................................2
DEFINITIONS............................................................................................................................2
CONTROL PANEL BUTTONS...................................................................................2
PROGRAMMING TERMS ..........................................................................................2
PROGRAMMING............................................................................................................................3
BEFORE YOU BEGIN PROGRAMMING................................................................................3
DISPLAY READOUTS................................................................................................3
PROGRAMMING............................................................................................................................4
PROGRAMMING SEQUENCE.................................................................................................4
PROGRAMMING............................................................................................................................5
PROGRAMMING............................................................................................................................6
OPTIONAL PROGRAMMING CODES....................................................................................6
PROGRAMMING............................................................................................................................7
PROGRAMMING CODES.........................................................................................................7
SERVICE...........................................................................................................................................8
MODEL STRAPPING INSTRUCTIONS...................................................................................8
SERVICE...........................................................................................................................................9
CIRCUIT BOARD IDENTIFICATION .....................................................................................9
TROUBLESHOOTING...................................................................................................................10
TROUBLE SHOOTING..................................................................................................................10
TEMPERATURE SENSOR VALUES .......................................................................................11
SENSOR RESISTANCE...............................................................................................11
SENSOR VOLTAGE DROP ........................................................................................ 11
TROUBLESHOOTING...................................................................................................................12
OPERATIONAL SEQUENCE....................................................................................................12
GAS CONVECTION OVEN........................................................................................12
TROUBLESHOOTING...................................................................................................................13
ELECTRIC CONVECTION OVEN.............................................................................13
TROUBLESHOOTING...................................................................................................................14
INDEX ...............................................................................................................................................15
1
CONTROL PANEL
1. Light Switch
2. Power Switch
3. Display
4. "Tier" Lamps
5. Product Buttons 1 - 0
6. Manual Program Button
7. Shelf Buttons A - E
8. "Read/Clear" Button
9. Temperature Recall
Button
2
PROGRAMMING
DEFINITIONS
CONTROL PANEL BUTTONS
1 -O Product Buttons. These are the buttons where the product programs are
stored. Pressing a Product Button will heat the oven to the programmed
temperature.
A - E Shelf Buttons. The control is capable of timing each shelf individually.
Pressing a Product Button then a Shelf Button will start the countdown timer.
MAN PROG The MANUAL PROGRAM button allows the operator to enter a temporary
product program without being required to input the programming code. The
temporary program is erased when the oven is turned off or when a new
program is entered. Time and temperature are the only parameters that can be
entered in the Manual Program mode.
READ/CLEAR The READ/CLEAR button has several functions.
•It is always the first button pressed when entering programming
codes.
•Pressing it twice then pressing a Product Button will "read-back"
the program in that product button.
•Pressing and holding the button down until "88888" appears in
the display will cancel the current mode of the control and return
the display to "Enter".
TEMP When the Temperature Recall Button is pressed, the display will indicate the
internal oven temperature. When released the display will revert to the
previous readout.
PROGRAMMING TERMS
COOKING CURVE Cooking curve is a function of the computer that controls the cooking time.
If the temperature of the oven is lower than the programmed temperature,
the control will slow the timer down to compensate for the lower cooking
temperature. Cooking Curves from 0 - no time adjustment to 7 - maximum
adjustment are available. Cooking Curve 3 is the most commonly used.
However, as a general rule the longer the cooking time the lower the
cooking curve, the shorter the cooking time the higher the cooking curve.
3
PROGRAMMING
FAN FUNCTION The convection fan has two programmable options. Fan On (Fan 1) runs
the convection fan continuously. Fan Off (Fan 0) leaves the fan off until
heat is called for by the control. In a convection oven, the fan must come
On whenever the heat comes On. The convection fan can not be turned Off
continuously.
TIER "Tiered" programming is the ability to change the cooking temperature or
fan function during the cooking cycle. As an example, some products
require the fan to be Off for the first half of the cooking cycle then turn On
for the last half, Tier 1 would be programmed with the fan in the Off mode
then Tier 2 would be fan On. The Tier lamps located below the display
(labeled T1, T2, T3, T4) will illuminate to indicate which Tier is being
programmed or which Tier the program is in during the cooking cycle.
BEFORE YOU BEGIN PROGRAMMING
The readout must display "ENTER" before the computer will accept any programming.
If the readout displays any other word, turn the oven Off then back On before beginning any programming
sequence.
The Control allows for a 3 second delay between each button push, if a delay of longer than 3 seconds has
occurred, the programming sequence must be re-entered.
Once the programming code is entered, the readout will prompt for the program information. The sample
screens, below, will describe what each prompt means.
DISPLAY READOUTS
MEANING
Enter
Product
Temperature
Cooking Curve 0 through 7
Fan On or Off (fan function)
Time
DISPLAY
EnTer
Prod
000 F
CC0-7
FAn 01
0:00:00
4
PROGRAMMING
PROGRAMMING SEQUENCE
The following procedure describes a standard programming sequence. Each programming prompt is shown
in the coloum DISPLAY and the required program entry is shown in the coloum ACTION.
The Control allows for a 3 second delay between each button push, if a delay of longer than 3 seconds has
occurred, the programming sequence must be re-entered.
ACTION
Press: Read/Clear, 1, 6, 2, 7, 3, 8
Select a Product Button 1 through 0
Enter a Cooking Temperature, 100 through 450 degrees.
Enter a Cooking Curve, 0 through 7. For a definition of Cooking curve, refer to
the DEFINITIONS section.
Select a Fan Function. 0 = Off, 1 = On. For a definition of Fan Function, refer
to the DEFINITIONS section.
Enter a Cooking Time, Hours/Minutes/Seconds up to 9:59:59.
This prompt is the beginning of the Tier 2 portion of the programming. For a
definition of Tiers refer to the DEFINITIONS section.
If, during the cooking cycle, the program calls for a change in the Cooking
Temperature or Fan Function that change can be entered at this time.
The Tier being programmed is indicated by the lighted Tier Lamp below the
Display.
If Tier 2, Tier 3, or Tier 4 programming is required, repeat the above entries as
prompted by the display (Cooking Curve is entered in Tier 1 only ) until all
necessary Tiers are programmed, then proceed to the steps shown below.
IMPORTANT
If the program requires one Tier programming only DO NOT repeat the above
procedures, proceed to the steps shown below.
DISPLAY
EnTer
Prod
000 F
CC0-7
FAn 01
0:00:00
000 F
5
PROGRAMMING
Press the flashing Ebutton to "Exit" this Product Button program.
Select another Product Button to program or press the Read/Clear button to
"Lock" the new program(s) into memory and exit the programming mode.
End of programming sequence
PROGRAMMING HINT
After inputing a program entry, press Shelf Button A to "advance" to the next
prompt. This will eliminate the need to wait for the readout to advance to the
next question on its own.
000 F
Prod
EntEr
6
PROGRAMMING
OPTIONAL PROGRAMMING CODES
Below are codes which will configure the display to an optional readout or or aid in the operation of the
oven.
The readout must display "ENTER" before the computer will accept any programming code. If the readout
displays any other word, turn the oven Off then back On before beginning the programming sequence.
The control allows for a 3 second delay between each button push, if a delay of longer than 3 seconds has
occurred, the programming code must be re-entered.
The instructions call for pressing exactly what is shown under "PRESS", The following abbreviations are
used to indicate which buttons are to be pressed.
ABBREVIATION MEANING
"1" through "0" Product Buttons
"A" through "E" Shelf Buttons
P Any particular Product Button
Shelf Any particular Shelf Button
R/C Read/Clear Button
M/P Manual Program Button
T Temp Button
R/C HOLD Hold the Read/Clear Button down until "88888" appears
on the Display
( ) Button to press after the display prompt changes
7
PROGRAMMING
PROGRAMMING CODES
CODE DESCRIPTION PRESS
OPERATIONAL
Recall time remaining on a shelf Shelf
Cancel a shelf timer R/C,R/C,Shelf
"One Button Loading" R/C,P,P,P,P,P
Cancel "One Button Loading" R/C HOLD
Multiple products per shelf On R/C,1,2,3,8,7,6
Multiple products per shelf Off R/C,6,7,8,3,2,1
DISPLAY MODES
Countdown timer display R/C,4,8,4,8,4,8
Shelf in use display R/C,0,9,0,9,0,9
Internal oven temperature display R/C,8,7,8,7,8,7
PROGRAMMING
Enter programming mode R/C,1,6,2,7,3,8
Recall an existing product program R/C,R/C,P
Erase a product program R/C,1,6,2,7,3,8 (P) (000)
Model identification R/C,D,C,D,C,D,C
Program download (Contact Factory) R/C,A,B,C,D,E,P
MAINTENANCE
Actual oven temperature R/C,3,4,5,6,7,8
Disable program code requirements (1st generation model only,
B and C serial number prefixes) R/C,1,6,2,7,3,8 (P) (9,9,9)
Calibrate (1st generation models, B and C serial number
prefixes, and EHS-CIR-BK only) R/C,M/P,T,6,1,7,2
8
SERVICE
MODEL STRAPPING INSTRUCTIONS
The control panel of the Lang "Purple" computer must be configured to match the model of oven it is being
installed in.
To configure the control panel, change the arrangement of the Strapping Bars located at the bottom of the
circuit board just above the ribbon connection.
Each model has its own strapping configuration which must be set by the installer of the control.
Follow the diagram below for the proper strapping configuration.
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