Lang ECO -6M, ECO -7M, ECO -8M, ECO -9M, ECO -6, ECO -7, ECO -8, ECO -9 Shipboard electric convection oven Operation and service manual

S6161-KW-FSE-010/34931

0910-LP-327-9700

OPERATION AND SERVICE MANUAL

FOR

SHIPBOARD ELECTRIC CONVECTION OVENS

MODEL NUMBERS ECO-6M, ECO-7M, ECO-8M, and ECO-

9M

LANG MANUFACTURING COMPANY

6500 MERRILL CREEK PARKWAY

EVERETT, WA 98203

FSCM 34931

DISTRIBUTION STATEMENT

THIS PUBLICATION IS REQUIRED FOR OFFICIAL USE OR FOR

ADMINISTRATIVE OR OPERATIONAL PURPOSES. DISTRIBUTION IS LIMITED

TO U.S. GOVERNMENT AGENCIES ONLY. OTHER REQUESTS FOR THIS

DOCUMENT MUST BE REFERRED TO COMMANDER, NAVAL SEA SYSTEMS

COMMAND, SEA 09, WASHINGTON, DC 20362

SUPERCEDURE NOTICE

S6161-KW-FSE-010/34931 DATED JANUARY 2006

CANCELS AND SUPERCEDES S6161-KW-FSE-010/34931

DATED MAY 1999

AND ALL CHANGES THERETO

1

MANUAL SUPPLEMENT FOR MARINE EQUIPMENT

THIS EQUIPMENT IS APPROVED FOR INSTALLATION ONLY ON

VESSELS GREATER THAN 65 FEET IN LENGTH IN

ACCORDANCE WITH USCG REGULATIONS IN TITLE 46 CFR 110-

113.

ANY WIRING USED IN THE INSTALLATION OF THIS APPLIANCE

MUST BE STRANDED COPPER.

2

S6161-KW-FSE-010/34931

JANUARY 2006

IDENTIFYING TECHNICAL PUBLICATION SHEET

1. IDENTIFICATION DATA: LANG MFG. CO. MODELS ECO-6M, ECO-7M,

ECO-8M, & ECO-9M.

2. PURPOSE: THIS TECHNICAL PUBLICATION IS ISSUED FOR THE PURPOSE

OF IDENTIFYING AN AUTHORIZED TECHNICAL MANUAL FOR NAVY USE

AND FOR PROVIDING SUPPLEMENTAL TECHNICAL INFORMATION.

A. MANUFACTURER: LANG MFG. CO.

B. CONTRACT NUMBER: DLA400-91-M-5159

C. EQUIPMENT: ELECTRIC CONVECTION OVEN, MODEL # ECO-6M, ECO-

7M, ECO-8M, & ECO-9M.

D. REQUISITION NUMBER: NOT REFERENCED

E. NATIONAL STOCK NUMBER (NSN): 7310-01-314-7939

F. TITLE: MAINTENANCE MANUAL FOR ELECTRIC CONVECTION OVEN

ECO-6M, ECO-7M, ECO-8M, & ECO-9M

G. DATE OF PUBLICATION: JANUARY 2006

H. PREPARING ACTIVITY: DEFENSE GENERAL SUPPLY CENTER

I. APPLICABLE TMCR NUMBER: NDMS 880393-000

J. EXTENT OF PROPOSED SUPPLEMENTAL DATA (10% MAXIMUM): 1%

K. LIST OF TECHNICAL MANUAL FOR THIS EQUIPMENT PROCURED

UNDER ANOTHER CONTACT:

3. ADDITIONAL COPIES: ADDITIONAL COPIES ARE AVAILABLE FROM:

NAVAL PUBLICATION AND FORMS CENTER

5801 TABOR AVENUE

PHILADELPHIA, PA 19120-5099

4. COVER: THE TECHNICAL MANUAL OUTSIDE COVER SHALL CONTAIN

THE FOLLOWING STATEMENTS:

PUBLISHED BY DIRECTION OF COMMANDER, NAVAL SEA SYSTEMS

COMMAND

THIS PUBLICATION IS REQUIRED FOR OFFICIAL USE OR FOR

ADMINISTRATIVE OR OPERATIONAL PURPOSES. DISTRIBUTION IS LIMITED

TO U.S. GOVERNMENT AGENCIES ONLY. OTHER REQUESTS MUST BE

REFERRED TO COMMANDER, NAVAL SEA SYSTEMS COMMAND, SEA 09,

WASHINGTON, DC 20362.

3

S6161-FW-FSE-010/34931

0910-LP-327-9700

APPROVAL AND PROCUREMENT RECORD

APPROVAL DATA FOR: LANG ELECTRIC CONVECTION OVEN MODELS ECO-

6M, ECO-7M, ECO-8M, & ECO-9M.

TITLE OF MANUAL: MAINTENANCE MANUAL FOR: ELECTRIC

CONVECTION OVEN MODELS: ECO-6M, ECO-7M, ECO-

8M, & ECO-9M.

APPROVAL AUTHORITY: NAVAL SHIP SYSTEMS ENGINEERING STATION

CONTRACT NUMBER NSN # OF UNITS APL/CID

DLA400-86-C-5292 7310-01-227-8214 58 430280135

DLA400-88-C-5327 7310-01-277-4105 97 430280144

DLA400-89-C-0442 7310-01-290-0463 13 430280147

DLA400-91-M-5159 7310-01-314-7939 5

REMARKS:

430280155

DATE: JANUARY 2006

CERTIFICATION:

IT IS HEREBY CERTIFIED THAT THE TECHNICAL MANUAL PROVIDED

UNDER CONTRACT NUMBER DLA400-91-M-5159 FOR LANG ECO-6M, ECO-7M,

ECO-8M, & ECO-9M HAS BEEN APPROVED BY THE APPROVAL DATA SHOWN

ABOVE:

______________________________

DIRECTOR, GOV’T CONTRACTS

LANG MANUFACTURING COMPANY

FSCM / CAGE #: 34931

4

Change no. Date

CHANGE RECORD

Title and/or Brief Description

Signature of

Validating Officer

5

TABLE OF CONTENTS

CHAPTER PAGE

1. TABLE OF CONTENTS ............................................................................... 6

2. LIST OF ILLUSTRATIONS.......................................................................... 7

3. READ FIRST ................................................................................................. 8

4. SPECIFICATIONS ........................................................................................ 11

5. EQUIPMENT DESCRIPTION ...................................................................... 14

6. INSTALLATION ........................................................................................... 16

7. OPERATION.................................................................................................. 18

8. MAINTENANCE & TROUBLESHOOTING PROCEDURES .................... 19

9. PARTS LIST .................................................................................................. 24

10. WIRING DIAGRAMS ................................................................................... 26

6

LIST OF ILLUSTRATIONS

FIGURE #

1

TITLE OF ILLUSTRATION

Picture of Oven

1A Specifications

2

3

4

5

6

Leg Installation

Stacking Instructions

Exploded View

Wiring Diagram 208/240 VAC

Wiring Diagram 440 VAC

PAGE #

11

12 & 13

17

17

23

26

27

7

CAUTION:

CAUTION:

CAUTION:

DANGER:

WARNING:

NOTICE:

NOTICE:

NOTICE:

CAUTION:

CAUTION:

FIRST

THE OVEN IS EXTREMELY HEAVY. 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(S).

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 APPLICABLE CODES.

The data plate is located on the door of the oven. The oven voltage, wattage, serial number, wire size, and clearance specifications 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.

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.

8

IMPORTANT READ

WARNING:

KEEP WATER AND SOLUTIONS OUT OF CONTROLS.

NEVER SPRAY OR HOSE CONTROL CONSOLE,

ELECTRICAL CONNECTIONS, ETC.

CAUTION:

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.

NOTICE:

For the service station nearest you.

WARNING:

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.

CAUTION:

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

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.

9

LANG MANUFACTURING COMPANY

MANUAL FOR MODEL ECO

ELECTRIC CONVECTION OVENS

ISSUE DATE JANUARY 2006

LANG MANUFACTURING COMPANY

6500 MERRILL CREEK PARKWAY

EVERETT, WA 98203

MIL SPEC

CONVECTION OVENS PER: MIL-0-0043633 E

LANG MODEL NUMBER

Type I, Size 1

Type I, Size 1 N.S.A. *

Type I, Size 2

Type I, Size 2 N.S.A. *

Type II, Size 1

Type II, Size 1 N.S.A. *

Type II, Size 2

Type II, Size 2 N.S.A. *

ECO-7

ECO-7M

ECO-6

ECO-6M

ECO-9

ECO-9M

ECO-8

ECO-8M

SPECIFIC NSN

7310-01-290-0463

7310-01-314-7939

7310-01-230-0559

7310-01-277-4105

7310-01-227-8214

* N.S.A. for “Naval Shipboard Application”. All components will fit through a 26” X

66” watertight door.

10

Figure # 1

11

EQUIPMENT DESCRIPTION

INTRODUCTION

This manual contains the necessary information to install, operate, maintain, and service the Lang model ECO convection ovens.

Replacement parts should be genuine Lang parts. Failure to use genuine

Lang replacement parts may result in malfunction of the appliance or possible injury to the contractor or service technician.

PURPOSE AND FUNCTION

Convection ovens constantly circulate air over the product. This removes a layer of moisture and cool air from around the product. This allows heat to penetrate the product more quickly. Cooking times are shortened and cooking temperatures are reduced.

CAPABILITIES

This convection oven is suitable for cooking all types of products requiring baking or roasting.

ENVIRONMENTAL REQUIREMENTS

The following minimum spacing from combustible surfaces must be maintained: Sides – 2 inches, Back – 2 inches

ITEMS FURNISHED (Listed by Model Number)

Model ECO-6 or ECO-6M

1 ea. Oven, Type I, Size 2

4 ea. Legs

16 ea. 3/8 – 16 x 5/8 Bolts (For mounting legs)

16 ea. 3/8 – 16 Hex Nuts (For mounting legs)

32 ea. Washers (For mounting legs)

2 ea. Rack Slides, Extra Deep

5 ea. Racks, Extra Deep

2 ea. Manuals, Technical

Model ECO-7 or ECO-7M

1 ea. Oven, Type I, Size 1

4 ea. Legs

16 ea. 3/8 – 16 x 5/8 Bolts (For mounting legs)

16 ea. 3/8 – 16 Hex Nuts (For mounting legs)

32 ea. Washers (For mounting legs)

2 ea. Rack Slides, Standard Depth

5 ea. Racks, Standard Depth

2 ea. Manuals, Technical

14

EQUIPMENT DESCRIPTION CONT’D

Model ECO-8 or ECO-8M

2 ea. Oven, Type II, Size 2

4 ea. Legs

16 ea. 3/8 – 16 x 5/8 Bolts (For mounting legs)

16 ea. 3/8 – 16 Hex Nuts (For mounting legs)

32 ea. Washers (For mounting legs)

4 ea. Rack Slides, Extra Deep

10 ea. Racks, Extra Deep

2 ea. Manuals, Technical

1 ea. Stacking Kit

Model ECO-9 or ECO-9M

2 ea. Oven, Type II, Size 1

4 ea. Legs

16 ea. 3/8 – 16 x 5/8 Bolts (For mounting legs)

16 ea. 3/8 – 16 Hex Nuts (For mounting legs)

32 ea. Washers (For mounting legs)

4 ea. Rack Slides, Standard Depth

10 ea. Racks, Standard Depth

2 ea. Manuals, Technical

1 ea. Stacking Kit

ITEMS REQUIRED

An adequate supply of wire suitable for the loads and application specified on the data sheet must be provided. The data sheet is on Page 4 of this manual.

TOOLS AND TEST EQUIPMENT REQUIRED

For Installation:

1 set – Open End Wrenches

1 – Flat Blade Screwdriver

1 – Phillips Screwdriver

1 – Wire Cutter/Stripper

1 – AMP Probe

1 – Voltmeter

1 – Drill

4 – #27 Drill Bits

For Service: All of the above plus –

1 – Needle Nose Pliers

1 – Crimping Pliers

1 – Allen Wrench Set

1 – Temperature Meter

1 – Very Small Flat Blade Screwdriver

1 – #10 Square Drive Screwdriver

15

INSTALLATION

CAUTION:

CAUTION:

CAUTION:

DANGER:

THE OVEN IS EXTREMELY HEAVY. 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(S).

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.

WARNING:

NOTICE:

NOTICE:

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 APPLICABLE CODES.

The data plate is located on the door of the oven. The oven voltage, wattage, serial number, wire size, and clearance specifications 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.

INSPECTION AND INSTALLATION

Upon receipt of the oven(s) any damage should be noted on the Bill of

Lading and countersigned by the carrier. If concealed damage is discovered the carrier should be notified. All claims must be filed with the carrier.

Move the crate(s) containing the oven(s) as close to the place of installation as possible before removing the protective crating. Uncrate the oven(s) and move them as close as practical to the final installation site.

Bolt the legs to the bottom oven, (See figure #2). Use the 3/8 – 16 x 5/8

Bolts, Hex Nuts and Washers provided. There are pre-punched holes provided in the legs and oven bottom to aid in leg installation. Now the oven can be set upright in or near its final position.

16

INSTALLATION

Oven Bottom Flange

Oven Bottom

Nut 3/8 – 16 Hex

Lock Washer

Flat Washers

FIGURE # 2

Bolt 3/8 – 16 x 5/8

Oven Leg

For single cavity ovens, they can now be connected to power through he knockout in the bottom.

The oven can be placed in its final position and leveled. The oven is ready for initial start-up procedures now. (See page 17)

For two cavity ovens, place the upper oven on top of the bottom oven. Be careful to route the power supply wire between the two ovens using the holes provided.

Do not pinch or cut the supply wires when stacking the ovens. Use the stacking kit provided to secure the top oven to the bottom oven. The stacking kit contains four

(4) identical corner braces. One brace goes on each corner. Do the following for each corner: Put a brace on a corner. Drill pilot holes for the mounting screws using the pre-punched holes as a guide. Secure the top oven to the bottom oven with the sheet metal screws provided. (See figure #3)

Top Oven

Bottom Oven

Corner Brace

FIGURE # 3

Connect the power supply leads from the top oven to the power supply leads of the bottom oven and incoming power per the wiring diagram on Page 16 or 17.

Now the bottom oven can be connected to the incoming power supply through the knockout provided in the bottom of the oven. Be sure the power supply voltage matches the voltage specified on the nameplate located on the front of the oven!

Then the oven can be placed in its final position and leveled. The oven is ready for initial start-up procedures now. See page 17.

17

OPERATION

NOTICE:

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.

CAUTION:

ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE

FROM COMBUSTIBLE MATERIALS.

CAUTION:

KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND

DRY. IF SPILLS OCCUR, CLEAN IMMEDIATELY, TO

AVOID THE DANGER OF SLIPS OR FALLS.

OPERATING INSTRUCTIONS

Each oven has the following controls:

Vent, Timer, Temperature, Power Switch, Light Switch and Motor Speed

Switch.

Vent – Pull to Open, Push to close.

Timer – Adjust to desired setting.

Temperature – Turn to desired cooking temperature.

Power Switch – Pull up to turn oven ON, push down to turn oven OFF.

Light Switch – Pull up to turn oven light ON, release and oven light goes out automatically.

Motor Speed Switch – Pull up for High Speed, push down for low speed.

INITIAL START-UP

Set oven(s) at 350

° and allow oven to operate empty for 3 hours. After this time, the oven is ready for use.

NORMAL OPERATION

Turn the Power Switch On, turn to the desired temperature and select motor speed. (Hi or Low)

MAINTENANCE

Wash the stainless interior & exterior often with a solution of hot water and detergent to prevent grease build-up and preserve the oven’s appearance.

Wipe up spillage as soon as possible. Never use scouring powder. It is difficult to remove completely and a residue build-up can damage the oven.

The oven racks, slides and stainless steel oven liners are removable for easier cleaning of the oven interior.

18

MAINTENANCE AND TROUBLESHOOTING

WARNING:

KEEP WATER AND SOLUTIONS OUT OF CONTROLS.

NEVER SPRAY OR HOSE CONTROL CONSOLE,

ELECTRICAL CONNECTIONS, ETC.

CAUTION:

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.

NOTICE:

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.

WARNING:

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.

CAUTION:

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.

TROUBLESHOOTING GUIDE

Oven will not turn on

Power Supply Circuit Breakers

Trip

SYMPTOM PROBLEM REMEDY

Internal circuit breakers trip

Oven takes too long to bake and wont’ maintain temperature

* Internal Circuit Breakers off

* Power supply circuit breakers off

* Improperly Phased

* Fuses Open

* Supply circuit breakers of insufficient size

* Supply voltage & oven voltage do not match

* Supply voltage & oven voltage do not match

* Improperly phased

* Turn on

* Turn on

* Phase per wiring diagram

* Change fuses

* Install proper size breakers

* Change voltage to match oven

* Change voltage to match oven

* Phase oven to match power supply per wiring diagram

19

MAINTENANCE AND TROUBLESHOOTING CONT’D

PERFORMANCE AND INSPECTION

A periodic check of thermostat calibration should be performed. To check oven calibration attach a thermocouple to the mid-point of the thermostat bulb in the oven cavity. Turn the temperature dial to 350

° and turn the oven

ON. Wait approximately 20 minutes until the oven temperature has stabilized. If the average of the ON and OFF thermostat readings is within

10

° of 350° the oven is in calibration. If not, remove the temperature knob and turn the small screw in the middle until oven is in calibration. Replace the knob and the oven is ready for normal operation.

MAJOR COMPONENT DISASSEMBLY, REPAIR, REPLACEMENT

AND REASSEMBLY

(Refer to figure #4, page 22)

THERMOSTAT, CONTACTORS (RELAYS), SWITCHES

These parts are located behind the control panel assembly on the right hand side of each oven. Remove the screws attaching the control panel to the front of the oven. Slowly pull out the control panel until the component requiring replacement is accessible.

THERMOSTAT REPLACEMENT:

Inside the oven cavity remove the retaining clips holding the thermostatsensing bulb in place. Feed the bulb through the oven wall into the control panel area. Remove the wires attached to the thermostat terminals.

Remember the terminal each wire was on and attach the wires to the same terminal on the new thermostat. Remove the screws holding the old thermostat to the front of the control panel. Discard old thermostat. Mount the new thermostat to the control panel, carefully feed the sensing bulb through the oven wall, and reattach the sensing bulb to the oven side using the retaining clips removed earlier. Close control compartment. Restore power to oven. Refer to the “Performance and Inspection” section to verify proper operation of the new thermostat.

20

MAINTENANCE AND TROUBLESHOOTING CONT’D

ELEMENT REPLACEMENT:

The element is located inside the oven cavity. To replace the element, remove the baffle at the back of the oven. This will expose the elements to plain view and allow easy access. Remove the element mounting screws located near the top of the oven. Gently, pull the element into the oven cavity. There is enough wire connected to the element to allow easy access to the terminals located behind the element mounting plate. Move each wore from the existing terminal to the corresponding terminal on the new element. DO NOT mix up these wires! After all wires are transferred to the new element, feed the wire back through the access hole in the back of the oven and attach the element to the oven wall with the screws removed earlier. Replace the baffle. Refer to the “Initial Start-up” section to restore the oven to proper operation.

CONTACTOR (RELAY), SWITCH REPLACEMENT:

Pull out control panel as previously outlined. Remove the wires from the contactor or switch being changed. Place those wires on the corresponding terminal of the new part. Remove old part and mount new part with wires attached in the spot where the old part used to be. Reinstall the control panel, restore power to the oven. Turn oven on, set thermostat to 200

° and allow oven to cycle 3 times or until the technician is satisfied with the proper operation of the oven.

BLOWER WHEEL REPLACEMENT:

The blower wheel is located inside the oven cavity. To replace the blower wheel, remove the baffle at the back of the oven. This will expose the blower wheel to plain view and allow easy access. Loosen the two (2) set screws holding the blower wheel onto the motor shaft. Using a three-finger blower wheel puller, grasp the puller ring with all three fingers and tighten the puller until the blower wheel hub clears the motor shaft. Place new blower wheel on the motor shaft and position exactly 5/8” from the oven back motor plate. Tighten the set screw positioned over the flat on the motor shaft. Spin the fan to make sure it spins straight. Tighten the second set screw and re-tighten the first set screw. Replace the baffle. The oven is now ready to re-start.

21

MAINTENANCE AND TROUBLESHOOTING CONT’D

MOTOR REPLACEMENT:

The motor is located inside the oven cavity. To replace the motor, remove the baffle at the back of the oven. This will expose the blower wheel and motor shaft to plain view and allow easy access. Remove the blower wheel as described in “BLOWER WHEEL REPLACEMENT”. Next, remove the bolts holding the motor plate to the back wall of the oven cavity. Gently pull the motor forward and lay on the bottom of the oven cavity. Mark the wires so they can be placed on the same terminals of the new motor.

Remove the motor wires. Remove the motor from the oven. Remove the motor mounting bolts, remove the old motor and replace with the new one.

Reveres the above steps to remount the motor and see “BLOWER WHEEL

REPLACEMENT” for proper re-installation of the blower wheel.

TRANSFORMER REPLACMENT:

Pull out control panel as previously outlined. Mark the wires attached to the transformer. Remove the wires. Remove the screws holding the transformer to the control panel. Install the new transformer. Reconnect the wires making sure they are attached to the same terminals as on the original transformer. Reinstall the control panel, restore power to the oven.

The oven is now ready for normal operation.

MICROSWITCH REPLACEMENT:

Open the oven doors and remove the screws from the microswitch cover located below the doors. Remove the microswitch cover. Remove the two

(2) small screws (6/32) holding the microswitch to its’ mount. Mark the wires attached to the microswitch, then remove the wires. Attach the wires to the new microswitch. Mount the microswitch with the two 6/32 screws.

Adjust the microswitch arm for proper switch actuation. Replace cover and restart oven.

22

Item # Description

1 Thermostat

7 Door Hinge Set, LH and RH

10

11

Rack, Deep, ECO-6M & ECO-8M

Rack, Std., ECO-7M & ECO-9M

Rack Slide, ECO-6M & ECO-8M

Rack Slide, ECO-7M & ECO-9M

12 Socket, Light

15 Fuse

16 Motor, 440 VAC, 2 speed

17 Element, VAC

24 Pilot Light, 250 VAC

Lang Part # Vendor

30402-27

30401-09

70701-25

70603-20

ECO-762

71301-04

60102-369

71500-05

50200-31

50200-20

50200-33

50200-32

31602-04

31603-04

30901-08

30900-10

30200-16

11090-25

30301-02

31400-04

30801-03

70701-19

30303-06

30303-06

31601-01

30303-06

Robertshaw

Youngswood, PA

Elmwood

Pawtucket, RI

Aimsco

Seattle, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Mills Products

Farmington, MI

Lang Mfg

Everett, WA

Revcor

Carperntersville, IL

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Litemor

Seattle, WA

H.D. Campbell

Seattle, WA

H.D. Campbell

Seattle, WA

Leeson Electric

Milwaukee, WI

Caloritech, Inc.

Buffalo, NY

Unimax

Boston, MA

Argo International

New York, NY

M.H. Rhodes

Chicago, IL

Lang Mfg

Everett, WA

Carlingswitch Inc.

Plainsville, CT

Carlingswitch Inc.

Plainsville, CT

Indicator Lites

Chicago, IL

Carlingswitch Inc.

Plainsville, CT

Vendor #

KXP-356-48

345-0RC-174-0067

DK-49-REID

70603-20

ECO-762

1001453

60101-369

1-8149

50200-31

50200-20

50200-33

50200-32

31602-04

1139750A/250V

HPF-EE Bussman

SC-15

101354.00

IXI-11090-25

HL2KJC3T055C

HD/2221109T00

22007

70701-19

2GL231-78-XLN2

2GL231-78-XLN2

10422250012221

2GL231-78-XLN2

24

26

27

28

29

30

31

32

34

35

36

S/S Liner, Top ECO-6M & ECO-8M

S/S Liner, Top ECO-7M & ECO-9M

S/S Liner, Bottom ECO-6M &

ECO-8M

S/S Liner, Bottom ECO-7M &

ECO-9M

ECO-750

S/S Liner, Left ECO-6M & ECO-8M ECO-754

S/S Liner, Left ECO-7M & ECO-9M

S/S Liner, Right ECO-6M &

ECO-8M

S/S Liner, Right ECO-7M &

ECO-9M

S/S Liner, End Cover Bottom

S/S Liner, End Cover Top

Door Stop Assy, Left Hand

Door Stop Assy, Right Hand

Contactor, 2 Speed Motor

Terminal Block, 3 Pole 95 Amp

Rear Baffle Assembly

Capillary Tube Holder

ECO-751

ECO-752

ECO-753

ECO-755

ECO-756-01

ECO-757-01

ECO-758

ECO-758-1

50301-50

50301-88

30700-03

30705-01

30500-09

ECO-351

70701-55

31604-01

31604-02

50301-21

20304-01

ECO-276

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Products Unlimited

Chicago, IL

Products Unlimited

Chicago, IL

All-west Fasteners

Seattle, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

VWR Scientific

Brisbane, CA

Atlas Supply

Seattle, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

Lang Mfg

Everett, WA

ECO-750

ECO-751

ECO-752

ECO-753

ECO-754

ECO-755

ECO-756-01

ECO-757-01

ECO-758

ECO-758-1

50301-50

50301-88

3100-30U9198CY

3120-30K8198Q

14002-3A

ECO-351

70701-55

66110-065

31604-02

50301-21

20304-01

ECO-276

25