Lang GCCO-AP, GCCO-C, GCCO-PP, GCCO-PT, GCCO-SII Service Manual

...

Service Manual for the Lang Models:

GCCO-AP, GCCO-C, GCCO-PP, GCCO-PT, GCCO-SII,

GCCO-T

Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203

Phone: 1-800-224-5264 Fax: 1-425-349-2733

CHAPTER PAGE

1. TABLE OF CONTENTS.......................................................................1

2. READ FIRST ....................................................................................... 2

3. EQUIPMENT DESCRIPTION..............................................................4

4. INSTALLATION...................................................................................6

5. START-UP...........................................................................................8

6. CONTROL PANEL LAYOUT...............................................................9

7. PROGRAMMING TERMS ................................................................... 15

8. PROGRAMMING................................................................................. 17

9. GENERAL OPERATION .....................................................................27

10. TYPICAL OPERATION ....................................................................... 29

11. SEQUENCE OF OPERATION.............................................................32

12. TROUBLESHOOTING......................................................................... 34

13. TECHNICAL DATA.............................................................................. 50

14. WIRING DIAGRAMS...........................................................................55

15. PARTS LIST........................................................................................61

IMPORTANT READ FIRST IMPORTANT

CAUTION:

DANGER:

WARNING:

EACH UNIT WEIGHS 500 LBS. FOR SAFE HANDLING, INSTALLER SHOULD OBTAIN HELP AS NEEDED, OR EMPLOY APPROPRIATE MATERIALS HANDLING EQUIPMENT (SUCH AS A FORKLIFT, DOLLY, OR PALLET JACK) TO REMOVE THE UNIT FROM THE SKID AND MOVE IT TO THE PLACE OF INSTALLATION.

ANY STAND, COUNTER OR OTHER DEVICE ON WHICH OVEN WILL BE LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE OVEN.

SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN CUT.

THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL PROVIDED. FAILURE TO GROUND THE APPLIANCE COULD RESULT IN ELECTROCUTION AND DEATH.

INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT. UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL APPL I CABLE CO D E S .

WARNING:

NOTICE:

BEFORE LIGHTING, USE A SOAP AND WATER SOUTION TO TEST ALL JOINTS FOR GAS LEAKS.

DURING INITIAL USE, OR AFTER SERVICE, IF PILOT DOES NOT IGNITE ON FIRST TRY THE MAIN GAS VALVE MUST BE TURNED OFF FOR AT LEAST FIVE MINUTES.

The data plate is located above control panel behind wire mesh screen. The oven voltage, BTU, serial number, pipe size, and clearance specifi cat ion s are on the data plate. This information should be carefully read and understood before proceeding with the installation.

The installation of any components such as a vent hood, grease extractors, fire extinguisher systems, must conform to their applicable National, State and locally recognized installation standards.

During the first few hours of operation you may notice a small amount of smoke coming off the oven, and a faint odor from the smoke. This is normal for a new oven and will disappear after the first few hours of use.

IMPORTANT READ FIRST IMPORTANT

WARNING:

CAUTION: CAUTION:

CAUTION:

NOTICE:

WARNING:

CAUTION:

KEEP WATER AND SOLUTIONS OUT OF CONTROLS. NEVER SPRAY OR HOSE CONTROL CONSOLE, ELECTRICAL CONNECTIONS, ETC.

ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM COMBUSTIBLE MATERIALS.

KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR FALLS.

MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS MEMBRANES AND CLOTHING. PRECAUTIONS SHOULD BE TAKEN TO WEAR RUBBER GLOVES, GOGGLES OR FACE SHIELD AND PROTECTIVE CLOTHING. CAREFULLY READ THE WARNING AND FOLLOW THE DIRECTIONS ON THE LABEL OF THE CLEANER TO BE USED.

Service on this, or any other, LANG appliance must be performed by qualified personnel only. Consult your authorized service station directory or call the factory at 1-800-224-LANG (5264), or WWW.LANGWORLD.COM for the service station nearest you.

BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS APPLIANCE WHEN THE UNIT IS PLUGGED/WIRED INTO A LIVE RECEPTACLE. BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY.

USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY LANG OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL WARRANTIES.

EQUIPMENT DESCRIPTION

Lang Model: GCCO

GAS FULL SIZE CONVENTION OVEN

EXTERIOR

•

The oven exterior dimensions are 40” (100 cm) Wide, 32” (80 cm) High, 38” (95 cm) Deep. The Top, Front, Back, and Sides are constructed of stainless steel with an aluminized bottom.

•

The oven doors come standard with a double pane window.

•

The door handle is constructed of Stainless Steel and Phonolic Tubing.

•

The oven cavity is insulated with high temperature insulation for efficiency and reduced heat loss.

INTERIOR

•

The oven cavity dimensions are 29” (72.5 cm) Wide, 20” (50.84 cm) High, 21” (53.38 cm) Deep.

•

The oven is designed for five shelves and comes with five Chrome Plated Racks.

•

The interior of the oven is constructed of porcelainized stainless steel.

OPERATION

•

The GCCO oven is a forced air convection oven with a vented oven cavity.

•

The air is driven by a 1/3 HP fan motor.

CONTROLS

The GCCO is available either with the Lang Accu-Plus (GCCO-AP), “Purple” Computer (GCCO-C), “Purple Plus” Computer (GCCO-PP), “Platinum” Computer (GCCO-PT), Selectronic (GCCO-SII), AccuTemp (GCCO-T):

GCCO-AP

•

Easy to use manual control knobs.

Pulse and two speed fan.

Solid State temperature sensing and controls.

GCCO-C

•

Complete Computerized Controls with a Manual Override system.

Programmable up to 10 products with four “tiers” for each program.

Independent Shelf Timers for each Shelf.

Load Control through use of Cooking Curves.

Shelf Compe nsation Timing for uni form baking.

Single speed fan.

GCCO-PP

•

The Purple Plus offer the same great one touch system of the Purple, coupled with the advanced

backing capabilities of the new Platinum.

GCCO-PT

•

GCCO-SII

•

GCCO-T

•

EQUIPMENT DESCRIPTION CONT’D

Icon-driven (touch) panel allows for easy operation, also includes a manual

override system.

Day-Part Memory capabilities allow operators to “recall” the last daily

selections automatically.

Programmable up to 99 products, advanced baking capabilities include: a

12:59:59 timer with ten “tiers” .

Independent Shelf Timer for each Shelf.

Load Control through use of Cooking Curves.

Shelf Compe nsation Timing for uni form baking.

Dual speed fan.

Complete Computerized Controls.

Solid State temperature controls.

Easy to use manual control knobs.

Pulse and two speed fan.

INSTALLATION

RECEIVING THE OVEN

Upon receipt, check for freight damage, both visible and concealed. Visible damage should be noted on the freight bill at the time of delivery and signed by the carrier's agent. Concealed loss or damage means loss or damage, which does not become apparent until the merchandise has been unpacked.

If concealed loss or damage is discovered upon unpacking, make a written request for inspection by the carrier's agent within 15 days of delivery. All packing material should be kept for inspection.

Do not return damaged merchandise to Lang Manufacturi ng Company. File your claim with the carrier. Prior to un-crating, move the oven as near its intended location as practical. The crating will help protect

the unit from the physical damage normally associated with moving it through hallways and doorways.

LEG INSTALLATION

Legs are available for both the single and double deck installations. Single deck installations require a 27inch leg. Double deck installations require 6-inch legs or casters.

To install the 27-inch legs, place some cardboard on the floor and gently tip the oven onto its back. Fasten two legs to the oven's front corners using the four 5/16 inch bolts provided in the leg kit. Lift the oven onto its front legs and block the back up using one of the 27-inch legs set upside down in the center rear of the oven body. Install the last 27-inch leg onto the oven body on the control side rear. Gently lift the oven rear, remove the leg set to support the oven center and install it on the last rear corner.

To install the 6-inch legs or casters, attach the leg or caster to the leg supports supplied in the oven by following the instructions in the box, then attach the leg support to the oven.

The adjustable feet on the bottom of each leg may be screwed in or out as necessary to level the oven. A torpedo level placed on an oven rack will assist in leveling the oven.

STACKING THE OVENS

Remove all the plug buttons from the top of the lower oven. Remove the stacking kit from the oven compartment of one oven and install the 1 1/4-inch plastic bushing

into the top of the lower oven. Tip the top oven backwards and install two 3/8-inch socket head bolts, found in the stacking kit, into the

two front leg holes that match the holes in the top of the lower oven. Install the socket head bolts with the heads of the bolt pointing away from the oven.

Lift the top oven and gently set on top of the lower oven so that the heads of the socket head bolts nest into the holes in the top of the lower oven.

ELECTRICAL CONNECTION

The electrical connection must be made in accordance with local codes or in the absence of local codes with NFPA No. 70 latest edition (in Canada use: CAS STD. C22.1).

The electrical service entrance is provided by a cord and plug located at the oven back directly behind the control compartment.

Each oven requires a 115-volt grounded supply and 7.1 amps. Supply wire size must be large enough to carry the amperage load for the number of ovens being installed.

Wire size information can be found on the oven data plate.

INSTALLATION CONT’D

GAS CONNECTION

This appliance is manufactured for use with the type of gas indicated on the data plate. Contact the factory if the gas type does not match that which is on the data plate.

All gas connections must be in accordance with local codes and comply with the National Fuel Gas Code ANSI Z223.1 latest edition.

An internal gas pressure regulator is located inside the control compartment. Gas must be delivered to the appliance regulator at less than 1/2 pound of pressure and less than 1/2-inch

water column pressure drop. The internal regulator is preset at the factory, however, due to gas pressure variations from area to area,

adjust the regulator to provide the manifold pressure indicated on the data plate. This should be 5 inches water column for natural gas and 10 inch water column for propane. A 1/8-inch NPT tap is provided on the main manifold for checking regulator pressure. Access the main manifold by removing the trim piece below the oven doors.

When replacing the 1/8-inch plug in the main manifold a joint sealant that is resistant to the action of liquid petroleum gas must be used.

The supply piping must be of sufficient size to provide 55,000 BTU/hr per oven. A 1/2-inch NPT connection is provided at the rear of the oven directly behind the control compartment. Connect each oven separately.

A gas shut off valve must be installed to the oven(s) and located in an accessible area. This appliance and its individual shutoff valve must be disconnected from the gas supply piping system

during any pressure testing of that system at test pressures in excess of 1/2 PSGI (3.45 kPA) and the appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply system at test pressures equal to or less than 1/2 PSIG (3.45 kPA).

Test for gas leaks. Use a commercial leak detector or a soap and water solution.

FLU EXTENSION

A flu extension must be installed on the lower oven of a stacked set.

The extension attaches to the flu opening of the lower oven and directs the flu products into the flu opening of the upper oven.

This extension must be installed.

The ovens may now be set into position. Be careful if sliding the ovens, they are not designed to slide over cracks or obstructions in the floor.

START-UPS

GCCO-AP / GCCO-C / GCCO-PP / GCCO-PT / GCCO-SII / GCCO-T

Convection Oven Start-Up

1) Verify connections at plug and terminal block

2) Incoming Gas - Water Column________

Natural Gas Propane

3) Incoming Voltage L1______

4) Motor amp draw ______

5) Are programs correct? Yes No

6) Verify actual temperature at 350 °F ________ °F. Note: Install thermocouple wire in center of oven cavity. Let oven cycle off and on 3 times before recording temperature.

Set manual program in the computer for 350

Model #_______ Date_______ Serial #________

Store #___________ Tech Name___________________ Contact_______________ Company _________________________ Store Phone #___________ Service Company Phone #______________

Address_____________________

______________________ ______________________

°°°°

CONTROL P ANEL GCCO-AP

CONTROL PANEL LAYOUT GCCO-C

CONTROL PANEL LAYOUT GCCO-PP

CONTROL PANEL LAYOUT GCCO-PT

When scrolling through

menus, this key will take you to the previous screen. When programming, this key will advance you to the next step.

Moves up through the alphabet, numerals and icons.

Moves down through the alphabet, numerals and icons.

Inspection light feature. Light will turn off automatically.

Turns the oven on and off. When the oven is on, the display screen will light up.

FUNCTION KEYS: Keys are active when a program option is displayed.

CONTROL PANEL GCCO-SII

CONTROL PANEL GCCO-T

Control Panel Buttons

PROGRAMMING TERMS

1 -0

A - E

Man Prog

READ/CLEAR

Temp

Product Buttons. These are the buttons where the product programs are stored. Pressing a Product Button will heat the oven to the programmed temperature. Shelf Buttons. The control is capable of timing each shelf individually. Pressing a Product Button then a Shelf Button will start the countdown timer. 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. 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

". 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.

PROGRAMMING TERMS CONT’D

FAN FUNCTION

TIER

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.

"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, and T4) will illuminate to indicate which Tier is being programmed or which Tier the program is in during the cooking cycle.

PROGRAMMING GCCO-C

Programming Made Easy

The Lang Purple Oven

Single Tier Programs

Note: Make sure the oven is ON. There are 3 Steps to Programming the Lang Purple Oven: 1) Use the “Password” to enter the Programming Mode, 2) Programming, and 3) exiting the Programming Mode.

Entering the Program Mode:

1. The display should read “Enter” before proceeding. If it does not, then hold the Read/Clear button down just until “ 8’s, remove your finger and “

2. Rapidly press the following buttons: “Read/Clear,” 1,6,2,7,3,8.

88888

Enter

” appears on the display. When you see the

” will appear on the display.

3. The display will now read “

PROD

.”

Programming a Product Button:

4. Press the number button you wish to program (program 1-10).

5. The display will now read “ to erase a preset program.

6. The display will now read “

7. The display will now read “ press 0 if the program requires the fan OFF.

8. The display will now read “ seconds. If the program requires minutes only, enter “00” after entering the minutes to indicate zero seconds.

9. Now press the “E” button. This will lock in your just entered program and ask you for a new product button to program. If you have more programs to enter, go back and follow steps 4-9. If you are finished, proceed to step 10 to exit the programming mode.

000°F

.” Enter the new program baking temperature or 000

CC0-7 Fan01

0:00:00

.” Enter the new cooking curve (CC) number.

.” Press 1 if the program requires the fan ON, or

.” Enter the baking/cooking time in minutes and

Exiting the Programming Mode:

10. To exit the programming mode, simply press the “Read/Clear” button. The display will now read “

program to operate the oven in the baking mode.

Enter

.” You are now in the normal operation mode. Press any preset

Note: Once you have exited the programming mode, you can double check your preset programs by quickly pressing the “Read/Clear” button twice, and then quickly press the product number. The program will then come up on the display, reading the program step-by-step.

PROGRAMMING GCCO-C CONT’D

GCCO-C PROGRAMMING CODES

Below are codes, which will allow you to configure the display or aid in the operation, and troubleshooting of the oven. The readout must display readout displays any other word, reset the computer by pressing and holding the display reads

“88888”

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".

CODE DESCRIPTION PRESS

• OPERATIONAL

Recall time remaining on a shelf Shelf Cancel a shelf timer R/C, R/C, Shelf

• DISPLAY MODES

Countdown timer display R/C,4,8,4,8,4,8

"ENTER"

before the computer will accept any programming code. If the

then release. Display should now read

“ENTER”

“R/C”

button until

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 (Product programmed) Erase a product program R/C,1,6,2,7,3,8 (P) (000) Model identification R/C, D,C,D,C,D,C Fan Setting ( HI or Both) R/C,E,D,C,B,A,1(high),2 (both) Program download (Contact Factory) R/C, A, B, C, D, E, P

MAINTENANCE

•

Actual oven temperature Return to ENTER

• SHELF COMPENSATION

Enter shelf co mpensation mode R/C, C, B, C, B, C, B Set shelf compensations (I.E.) A,2,3,A Return to ENTER R/C

R/C,3,4,5,6,7,8 R/C

ACTION DISPLAY

Turn the power switch on. If the oven is already on, press the Read / Clear key until the following screen is displayed.

Enter access code “

“C”.

Select

Select a number from 1-9 and press the key corresponding to that number.

4.a If a product Key selected already has a program, the screen will read

Enter a desired cooking / baking temperature. The screen will automatically advance to the next display.

Enter the cooking time and then press the next screen.

Enter the desired cooking curve. (Refer to sections 6.3 and

6.7 for more detail)

Select Fan speed. (Hi=1700 rpm, Low=1400)

Select Fan Pulse rate. (0 to 100%). 0=off unless calling for heat. 100=on at all time.

NOTE:

will be on that many number of seconds in a 100-second block. (E.g. 67%= on for 67 seconds in a 100 second block) If your press 1 you will go through the same sequence as outlined above. If you press 2 the next display will automatically appear.

Any number between 0-100 means that the fan

1 6 2 7 3 8”.

“E”

to advance to

PROGRAMMING GCCO-PP

SELECT PRODUCT OR

READ/CLEAR TO

PROGRAM

XX:XXPM XXXF

A: SET TIME B: SET DATE C: PROGRAM PRODUCTS D: NEXT MENU

PRODUCT PROGRAM MODE

SELECT PRODUCT

NUMBER 1-9

ENTER COOKING TEMP

100 TO 450 F

NOX T1 XXXF

EDIT PRODUCT?

1=EDIT OR 2=DELETE

NXX TX XXXF CX

XX:XX:XX PXXX F-XX

ENTER COOKING TIME

HR:MIN:SEC

NOX T1 XXXF CO

ENTER COOKING CURVE

0 TO 100% NOX T1 XXXF CXX XX:XX:XX PXXX F-XX

ENTER FAN SPEED

1=HI 2=LOW NOX T1 XXXF CXX XX:XX:XX PXXX F-XX

ENTER FAN PULSE RATE

1 TO 100%

NOX T1 XXXF CXX

XX:XX:XX PXX F-XX

CONTINUE TO TIER 2

1=YES 2=NO NOX T1 XXXF CXX XX:XX:XX PXXX F-XX

A: SET TIME B: SET DATE C: PROGRAM PRODUCTS D: NEXT MENU

STEP Press the button

to Turn oven “ON

”

PROGRAMMING GCCO-PT

STEP

Select Time/Date/Program

STEP

Select

STEP

Program Computer

Enter Access Code

ABCDEF

is the code.

Run Oven

Time / Date / Program

TIME DATE TEMP STATUS

00:04 01/01/09 96 STANDBY

Display Product

Timer Only

Set Time / Date

Program Computer

TIME DATE TEMP STATUS

00:05 01/01/09 96 PROGRAM

Press the up & down arrow keys to scroll through letters and numbers, then pr ess ‘Enter’ to m ove the cursor to the right.

Example: Press up once for an A, then press ‘Enter’. Press up

twice for a B, then press ‘Enter’. Continue through F. The screen will advance automatically when the code is entered correctly.

Enter Access Code

Use keys to select

then press enter

Enter

Press Cancel to Quit

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