TechnicalOrder_Oven_5_20_24.pdf

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TECHNICAL MANUAL

OPERATION AND

MAINTENANCE INSTRUCTIONS

WITH ILLUSTRATED PARTS BREAKDOWN

INTERMEDIATE MAINTENANCE

OVEN 1435-B-1

TIA ELECTRIC CO., INC

(Manual Prepared by Serv-AIr, Inc.

DAAB07-92-Z-BB08I

30 APRIL 1995

PUBLISHED UNDER THE AUTHORITY OF THE SECRETARY OF THE AIR FORCE

HANDLING AND DESTRUCTION NOTICE - Comply with distribution statement and destroy by any method that will prevent disclosure of contents or reconstruction of the document.

WARNING - This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et seq. ) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401, et seq. Violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25.

DISTRIBUTION STATEMENT B - Distribution authorized to U.S. Government Agencies only (Administrative Or Operational Use) (29 July 2014). Other requests for this document shall be referred to 406 SCMS/GUEE, Robins AFB, GA 31098-1670. Questions concerning technical content shall be referred to 404 SCMS/GUEE.

DISCLOSURE NOTICE - This information is furnished upon the condition that it will not be released to another nation without the specific authority of the Department of the Air Force of the United States, that it will be used for military purposes only, that individual or corporate rights originating in the information, whether patented or not, will be respected, that the recipient will report promptly to the United States, any known or suspected compromise, and that the information will be provided substantially the same degree of security afforded it by the Department of Defense of the United States. Also, regardless of any other markings on the document, it will not be downgraded or declassified without written approval of the originating United States agency.

BASIC AND ALL CHANGES HAVE BEEN MERGED TO MAKE THIS A COMPLETE PUBLICATION

CHANGE 1 - 29 JULY 2014

The purpose of this change is to add/correct Scientific and Technical Information (STINFO) affecting the security and/or distribution of this manual.

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TABLE OF CONTENTS

Chapter Title Page Chapter Title Page

LIST OF ILLUSTRATIONS ii 4-2 Operating Instructions 4-1 4-3 Controls and Indicators 4-2

LIST OF TABLES ii

5 MAINTENANCE INSTRUCTIONS 5-1

SAFETY SUMMARY Sl 5-1 General 5-1

INTRODUCTION AND DESCRIPTION 1-1 5-2 Operational Checkout 5-1 5-3 Inspection and Preventive

1-1 Introduction 1-1 Maintenance 5-1 1-2 Description 1-1 5-4 Troubleshooting 5-2 1-3 Capabilities and Features 1-1 5-5 Testing 5-2 1-4 Leading Particulars 1-1 5-6 Gaining Access to Components 5-4

5-10 Repair 5-5

2 SPECIAL TOOLS AND TEST

EQUIPMENT 2-1 6 DIAGRAMS 6-1

2-1 Special Tools 2-1 6-1 General 6-1 2-2 Test Equipment 2-1 6-2 Diagrams 6-1 2-3 Consumable Materials 2-1

7 ILLUSTRATED PARTS BREAKDOWN 7-1

3 PREPARATION FOR USE AND SHIPMENT 3-1

7-1 General 7-1 3-1 Preparation for Use 3-1 7-2 Purpose 7-1 3-2 Preparation for Shipment 3-1 7-3 Parts Listed 7-1

7-4 Maintenance Parts List 7-1 4 OPERATION INSTRUCTIONS 4-1 7-12 Manufacturers’ Codes 7-2

4-1 Theory of Operation 4-1

LIST OF ILLUSTRATIONS

Figure Title Page Figure Title Page

1-1 Oven Model 1435-B-l 1-1 5-7 Overheat Thermostat Replacement 5-11 4-1 Oven Operation 4-1 5-8 Heating Element Replacement 5-12 4-2 Controls and Indicators 4-2 5-9 Trimpot Assembly Replacement 5-13 5-1 Temperature Controller 5-10 Trimpot Adjustment 5-14

Test Setup 5-4 7-1 Oven assembly 7-4 5-2 Gaining Access 5-4 7-2 Top Cover Assembly 7-6 5-3 Component Removal 5-6 7-3 Center Post Assembly 7-9 5-4 Fan Wheel Removal 5-8 7-4 Door Assembly 7-11 5-5 Component Replacement 5-9 FO-1 Oven Electrical Schematic FP-1 5-6 Temperature Sensor Replacement 5-11

LIST OF TABLES

Number Title Page Number Title Page

1-1 Leading Particulars 1-1 2-2 Consumable Materials 2-1 2-1 Test Equipment 2-1 5-1 Troubleshooting 5-2 ii

|J| "^^^^ dki

SAFETY SUMMARY

The following are general safety precautions and instructions that personnel must understand and apply during many phases of operation and maintenance to ensure personal safety and health and the protection of Air Force property. Portions of this summary may be repeated elsewhere in this publication for emphasis.

OBSERVE WARNING AND CAUTION STATEMENTS

WARNING and CAUTION statements have been strategically placed throughout this manual to emphasize certain steps or procedures for the protection of personnel (WARNING) or possibility of equipment and property damage (CAUTION). A WARNING or CAUTION, once provided, will apply each time the related task is performed, regardless of the number of times the step is repeated throughout the manual. Prior to starting any task, review and understand the WARNINGS and CAUTIONS included in this manual for that task.

KEEP AWAY FROM LIVE CIRCUITS

Operating personnel must observe all safety regulations at all times. Do not replace components inside the equipment with voltage supply turned on. Under certain conditions, dangerous potentials may exist when power control is in the OFF position due to charges retained by capacitors. To avoid injuries, always remove power from discharge and ground circuits before touching. Adhere to all lock-out/tag-out requirements.

DO NOT WEAR JEWELRY

Remove rings, watches, and other metallic objects which may cause shock or bum hazards. Snagged finger rings have caused many serious injuries. Remove finger rings during all periods of maintenance.

DO NOT SERVICE OR ADJUST ALONE

Do not attempt internal service or adjustment with power applied unless another person capable of rendering aid and resuscitation is present. Personnel working with or near dangerous voltage shall be trained in modem methods of resuscitation. Information and training courses may be obtained from the director of base medical services.

GIVE CLEANERS/CHEMICALS SPECIAL CARE

Keep cleaners in approved safety containers and in minimum quantities. Some cleaners/chemicals may have an effect on iikin, eyes, and respiratory tract. Observe manufacturer’s WARNING label and current safety directives. Use only in authorized areas. Discard soiled cleaning cloths into safety cans.

S-1

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OBSERVE PRESSURE SYSTEM SAFETY PRECAUTIONS

Pressure system safety precautions apply to all ranges of pressure. Care must be taken during testing to ensure that all test connections are proper and tight prior to applying pressure to the test setup; all system components must be compatible with pressure applied. Use of compressed air can create an environment of propellent foreign particles. Air pressure shall be reduced to less than 30 psi and used with effective chip guarding and personal protective equipment.

WEAR PERSONAL PROTECTIVE EQUIPMENT

Wear protective clothing/equipment (gloves, apron, eye protection, etc.) approved for the; materials, procedures, and tools being used. Contact supervisor for guidance. If necessary, the bioenvironmental engineer of the base safety office should be contacted for guidance.

S-2

CHAPTER 1

INTRODUCTION AND DESCRIPTION

1-1 INTRODUCTION. 1-4 LEADING PARTICULARS.

This manual provides operation and maintenance instruc- The leading particulars for the model 1435-B-l oven are tions, along with an illustrated parts breakdown, for the provided in table 1-1.

oven model 1435-B-l.

Table 1-1. Leading Particulars 1-2 DESCRIPTION. (See Figure 1-1.)

Weight 90 pounds (empty) The model 1435B-1 oven is a double-door, double-cavity Height 20.25 inches unit with integral oven temperature and heat-sensing control. Width 25 inches Each oven door is secured by a primary latch located in the Depth 23.25 inches oven door and a lever-type secondary latch that fits over a Power 200 Vac, 3-phase, 4-wire, 400 Hz, bracket on the front, between the two oven doors. The 2350 watts per cavity secondary latch provides additional security against the oven door’s being accidentally opened while the oven is in operation. A spring has been added to the door hinge to hold the doors in the open position when access to the oven /-\ is desired. Each oven cavity contains six heating elements, ,,--^^ <^"^’-\ a blower for even heat circulation, a temperature sensor, ^^ ^’-^and an overheat thermostat. The temperature sensor is a pyi^-^ ^^^>\ heat-sensitive resistor which is connected to the solid-state I’S^’^ ^^^ ^ ’’’^temperature-control circuitry. The overheat thermostat will ’^^^’:’:M^<^^ .^W^ ~~~>\ open and remove heater power to the oven when oven ^^’\ ^^^ -^n -^^ ^^temperature is excessive. b>^><<^ ^^ ^^^ 1-3 CAPABILITIES AND FEATURES, h^ <^ ^^The oven has the capability of heating 36 frozen dinners (18 -^ |h in each cavity) in approximately 40 minutes. It also has the "\ ^’capability of using only one cavity of the oven at a time /---’"’ when fewer meals are required. A temperature control ^ ^^switch is provided for each oven cavity. The switch can be ^^\_ ’\^’ set for temperatures of 180, 250, or 350 F. A 0 to 60-minute timer is also provided. The timer turns the power on and off. An audible signal is also provided when the Figure 1-1. Oven Model 1435-B-l timer clicks off. The oven doors are equipped with a spring in the hinge to assure that the doors do not swing closed when removing hot meals. Force is required to close the doors. Each door is provided with a primary and a secondary latch to prevent the doors from being accidentally opened during operation.

1-1/(1-2 blank)

CHAPTER 2

SPECIAL TOOLS AND TEST EQUIPMENT

2-1 SPECIAL TOOLS. 2-3 CONSUMABLE MATERIALS.

No special tools are required to operate or maintain the Consumable materials needed for maintenance of the oven model 1435-B-l oven. are provided in table 2-2.

2-2 TEST EQUIPMENT.

The test equipment listed in table 2-1, or an equivalent, is required to perform the operational checks and testing of the oven.

Table 2-1. Test Equipment

TOOL/EQUIPMENT FIGURE

NUMBER CAGE NUMBER NOMENCLATURE USE AND APPLICATION

Fluke 77 89536 Multimeter Heating element resistance checks.

Fan motor field winding check.

Trimpot and resistor check.

Fluke 51 89536 Thermometer Trimpot and temperature selector checks.

Table 2-2. Consumable Materials

NOMENCLATURE____ _____SPECIFICATION PART NUMBER/CAGE

Insulating compound_________ RTV-108 CLEAR/08800

Tie wrap_______________ PLT1M-CP/06383

2-1/(2-2 blank)

CHAPTER 3

PREPARATION FOR USE AND SHIPMENT

3-1 PREPARATION FOR USE. e. After oven has cooled, wipe inside of cavities with clean, damp cloth to remove any contaminants or

a. Remove oven from shipping container and check for foreign matter that may be in the oven.

any damage that might have occurred during shipment. Save shipping container for future use. 3-2 PREPARATION FOR SHIPMENT.

b. Open the oven doors and check that all packing a. Clean interior and exterior of oven with a damp materials are removed and that items such as heating cloth.

elements, fan guards, and fan wheels are securely attached, b. Dry the interior and exterior of the oven with a clean, dry cloth.

c. Position the oven for shop test and connect electrical power, c. Install protective cover over electrical connector,

d. Perform an operational checkout per paragraph 5-2. d. Package the oven in the original shipping container, if available, or package the oven for shipment in accordance with MIL-STD-2073-1.

3-1/(3-2 blank)

CHAPTER 4

OPERATION INSTRUCTIONS

4-1 THEORY OF OPERATION. 4-2 OPERATING INSTRUCTIONS. (See figure 4-1.)

The oven requires electrical power of 115/200 Vac, 3-phase, 400 Hz to operate. When the power switch (timer) Operation of the oven consists of the following:

is turned on, the power light illuminates, the six heating elements in the cavity of the oven produce heat, and the fan a- Connect electrical power to oven.

begins operating. A sensor in each oven cavity senses and controls the heat to the temperature selected by the b. Close door (1) and turn secondary latch (2) to temperature control knob. A fan is provided in each cavity secure door.

of the oven to more evenly circulate the heat. A red power light illuminates when the timer is turned past the one- c. Set temperature control (3) to the desired minute mark, indicating power is on. The power light will temperature (180, 250, or 350 F).

remain on until the timer setting has expired or an overheat condition exists, at which time the overheat thermostat d- Tum the timer (4) to the desired time period (zero opens and turns off the electrical power to that cavity. An to 60 minutes). Observe that the red light (power amber light (heater on) illuminates whenever the power is on) (5) and the amber light (heater on) (6)

on. The illuminated light means that the oven is heating, illuminate and the blower motor (7) is running.

The light will remain on until the oven cavity reaches the selected temperature. At that time, the light will cycle off e. Remove electrical power from oven.

and will remain off until more heat is required to maintain the temperature selected.

7 ^ 5 6 3 2

---------\--- --------VMER-------\-------------ITBWABjRE---o\ (R) "./nv h ri "r/ ^ "^0:0^\ 1 1 \\ V/) V

\a, "^uc" U u ^-^-y

_____\ "________SLJ

Jp- -^ J )

_(R)_ Lq y i i i r \ _----^J

Figure 4- 7. Oven Operation

4-1

4-3 CONTROLS AND INDICATORS. (See fig- 4 ure4-2.) 2 3

The oven has two cavities. Each cavity has its own \ \^ ^^>~ controls. The oven assembly, with the left cavity detailed, f’^^-J / ^~^’’-\ is shown in figure 4-2. The right cavity is the same, except f^^^ R^ ^/, .^>i ’~~\ that the order of the controls is reversed. The controls and f’^^^:: ’^’^:::;’\ ^^Q^ indicators have the following characteristics: ^^’^^^^^’n ^^’^, ’^n ^^^ ^^^ Timer (1) Has a range from 0 to 60 ry ^\ ^^^.^ minutes. Turns power on when ’Q i^:

rotated. Shuts power off when l^ Ithi \ time has elapsed. \

’^Power-on light (2) Illuminates when power is on. -\ ^’’ Heater-on light (3) Illuminates when heating ele-ments are heating. Cycles on and off when oven is maintaining Figure 4-2. Controls and Indicators heat.

Temperature control (4) Used to select temperatures of 180, 250, or 350 F.

4-2

CHAPTER 5

MAINTENANCE INSTRUCTIONS

5-1 GENERAL. 5-3 INSPECTION AND PREVENTIVE

MAINTENANCE.

In order to determine the correct component to be replaced during maintenance, refer both to troubleshooting table 5-1 a. Inspection.

to locate the probable cause and to testing paragraph 5-5 to ensure that the proper component is replaced. Performing (1) Examine interior and exterior surfaces for the testing and operational checkouts requires the following damage, corrosion, and loose or missing shop environment: hardware.

a. Power source: 115/200 Vac, 3-phase, 4-wire, 400 (2) check wiring for evidence of overheating Hz (insulation discoloration or deterioration).

b. Connector: D3899/26W-G-11SN, with no. 10 (3) Examine transformers, resistors, and wires connected as follows: capacitors for chafing or signs of overheating.

Phase A to Pin A Phase A to Pin B (4) Examine terminals for loose connections, Phase B to Pin C abrasions, and presence of fungus.

Phase B to Pin D Phase C to Pin E (5) check motor for bent shaft. Check to see Phase C to Pin F that fan turns easily.

Neutral to Pin G Neutral to Pin H b. Cleaning.

Chassis GND to Pin J Chassis GND to Pin K (1) clean all electrical parts with a clean, dry, Pin L is empty, lint-free cloth or brush.

5-2 OPERATIONAL CHECKOUT. (2) Clean electrical connections such as terminal posts, lugs, and connector pins with

a. Inspect the oven interior to ensure the blower a mild abrasive to remove all corrosion and wheel rotates freely before closing doors, restore good conducting surfaces.

b. Connect electrical power to oven.

c. Close the doors and engage security latch.

Use of compressed air can create an

d. Adjust temperature control knob to desired tern- environment of propellent foreign particles.

perature. Air pressure shall be reduced to less than 30 psi and used with effective chip guarding and

e. Turn timer clockwise past 10 minutes, personal protective equipment.

f. The oven should be on and the red POWER ON (3) Use low-presaure compressed air to remove light illuminated. The fan should be rotating at its accumulated dust in confined areas. Follow full speed. The heating elements and amber light all standard shop practices when using should be on. As the temperature in the oven compressed air.

reaches the set temperature, the heater elements will cycle on and off, along with the amber light.

g. Remove electrical power from oven.

5-1

(4) Remove all dust, dirt, or foreign matter that may 5-4 TROUBLESHOOTING.

have accumulated on the inside of the oven, using a cloth dampened with warm water and mild soap. Troubleshooting procedures are contained in table 5-1. The exact cause of a malfunction can be further pinpointed by referring to the testing procedures in paragraph 5-5.

Table 5-1. Troubleshooting

________SYMPTOM________ PROBABLE CAUSE _______CORRECTIVE ACTION

Heater operates but blower does not. Defective fan motor Replace fan motor (para 5-14).

3-phase power not present Check power source.

Defective connector Replace connector.

Fan operates but oven does not heat. Defective temperature controller Replace controller (para 5-16).

Defective capacitor Replace capacitor (para 5-17).

Defective sensor Replace sensor (para 5-18).

Defective relay Replace relay (para 5-15).

Trimpot setting fully Check trimpot settings using counterclockwise or defective calibration procedures. Replace if necessary (para 5-5c).

Defective temperature selector Replace selector (para 5-13).

Defective overheat thermostat Replace thermostat (para 5-19).

Defective heating element Replace heating element (para 5-20).

Defective connector Replace connector.

Oven temperature incorrect. Trimpot out of calibration Adjust (para 5-21).

Oven slow in heating. Defective heating elements) Replace heating element(s) (para 5- 20).

HEATER ON light does not Defective indicator light Replace light (para 5-12).

illuminate. Defective resistor Replace resistor.

POWER ON light inoperative. Defective indicator light Replace light (para 5-12).

Defective resistor Replace resistor.

Motor runs slowly and heater is not Defective timer Replace timer (para 5-11).

operating.

5-5 TESTING, resistance of 16 ohms, all of the six heating elements are good. If one check has a resistance out of this range, at

The testing procedures in this paragraph consist of resistance least one of the two elements being checked is bad. To checks of the oven heating element, blower motor, and determine the bad heating element, remove the wires from trimpot assembly. Also discussed will be voltage checks of the out-of-range terminal (4, 5, or 6). Perform a resistance the heating elements, motor phases, and power input phases check from the end of each removed wire to TB-2 pin 11.

as well as continuity checks of the overheat thermostat and The resistance should be 32 ohms. The wire that checks out the timer. f range is the wire that goes to the bad heating element.

Trace the wire to the heating element so replacement can be

a. Heating Element Resistance Check. (Refer to made.

wiring schematic in chapter 6.) Check resistance between TB-2 pins 4 and 11, 5 and 11, and 6 and 11. The b. Fan Motor Field Winding Check. (Refer to wiring resistance should be 16 ohms. If all checks have a schematic in chapter 6.)

5-2

NOTE Vac from TB-2 pins 3 and 8, 3 and 9, and 8 and 9. If any one of these checks indicates zero and no wires are broken

Motor resistance is a function of temperature or burned, the timer is probably bad.

and will vary with temperature of windings.

The motor should be at room temperature to g. Input Power Voltage Check. (Refer to wiring perform this check, schematic in Chapter 6.) With power connected to oven and timer switch off, the following voltage should be present:

Check resistance between TB-2 pins 3 and 8, 3 and 9, and 8 and 9. The resistance should be 100 ohms for each From To Reading check. If any one of the checks indicates an open, replace the motor. TB2-1 TB1-10 115 Vac

TB2-2 TB1-10 115 Vac

c. Trimpot Assembly Check. (Refer to wiring TB2-3 TB1-10 115 Vac schematic in Chapter 6.) If the oven cavity is not reaching TB2-1 TB2-2 200 Vac or exceeding the temperature selected on the temperature set TB2-1 TB2-3 200 Vac switch and it has been determined that all heating elements TB2-2 TB2-3 200 Vac are working properly, perform the following checks to determine if the trimpot or the resistors on trimpot board are If any of the voltages are different, a problem exists in defective or if adjustment is required. If the oven is not either the power connector or the wiring from the connector heating at one of the three heat settings, it would indicate to the oven component.

that the trimpot or resistor for that setting is defective.

Determine if the defective part is the trimpot or the resistor h. Temperature Controller Check.

as follows:

NOTE

Resistor check:

Low-heat resistor should measure 91 ohms +/- 4.55. Perform test on temperature controller, if it is Medium-heat resistor should measure 75 ohms +/- 3.75. suspected of being the cause of a specific High-heat resistor should measure 47 ohms +/- 2.75. malfunction.

If this check indicates an open, replace the resistor. (1) Disassemble temperature controller from controller IAW paragraph 5-16a, place on a work bench, and

Trimpot check: Measure the resistance of the trimpot. If connect to the test setup shown in figure 5-1.

an open is indicated, replace the trimpot per paragraph 5-21.

If the oven is heating but the temperature is not reaching or (2) Adjust potentiometer Rl for 300 ohms and set exceeding the set temperature, adjust the trimpot per switch Sl to ON. Observe that relay does not paragraph 5-21c. energize.

d. Overheat Thermostat Check. (Refer to wiring (3) Slowly decrease resistance of potentiometer Rl schematic in Chapter 6.) Perform a continuity check until relay Kl energizes. The resistance should be between TB-2 pins 7 and 9. If the temperature is less than 235-245 ohms.

500 F and continuity is present, the thermostat is good.

NOTE

e. Timer Check. (Refer to wiring schematic in

Chapter 6.) With the timer in the OFF position, check for There are no adjustments on the temperature continuity between LI and Tl and L2 and T2. If continuity controller. If the temperature controller is out exists, replace the timer. With the timer in the ON of tolerance with the test parameter, it should position, check for continuity between LI and Tl and L2 be replaced.

and T2. If continuity does not exist, replace the timer.

(4) Slowly increase the resistance of potentiometer Rl

f. Oven Voltage Measurement Check. (Refer to until relay Kl de-energizes. The resistance should wiring schematic in Chapter 6.) With power applied and be greater than 240 ohms.

the timer switch turned on, check for 200-Vac between TB- 2 pins 4 and 5, 4 and 6, and 5 and 6. If any one of these (5) Assemble temperature controller to controller IAW checks indicates zero volts and no wires are broken or paragraph 5-16b.

burned, the heater relay is probably bad. Check for 200-

5-3

OFF L__^^______,___

115 VAC c-)^--^’^’ Q ORG_____ 8 7 WHT/BLLI

-A-.^----.’ ON-^___ \ ^

^ ^4 VDC

BLK 5 ^El^’^

1 ------!_ ’" 9_ ^ 250ncolL v v gr "Hi"i....,_ ^__i" 10 mf

Figure 5-1. Temperature Controller Test Setup

5-6 GAINING ACCESS TO COM- b. installation.

PONENTS. (See figure 5-2.)

(1) Position rear cover (4) on oven.

Removal of control box cover (2) is required for testing, troubleshooting, and removal of most components. (2) Install 20 screws (3) and tighten.

Removal of the rear cover (4) and top cover assembly (6) is required only for the replacement of the heating elements and the overheat thermostat. //

5-7 Control Box Cover Replacement. (See figure ^:;;r:><\^ 5-2.) ^\ ^% -\ /

a. Removal, j^^n^^ ^’<>^’’’’

(1) Ensure electrical power is disconnected. ^^^;;;^^"^J1;^<?^ .^’^>

(2) Remove 13 screws (1) and lift off control \ ^

’^ ^’’^^^I^ \ box cover (2). \ th ^) ^-^ \ ’v vr \ \

\ ^1 \ -; ’5

b. Installation. "\ -11 \./1

(1) Position control box cover (2) on control ^. ^-^ box. "\^.~<i^

(2) Install 13 screws (1) and tighten.

Figure 5-2 Gaining Access

5-8 Rear Cover Replacement. (See figure 5-2.)

a Removal ^"^ Top Cover Assembly Replacement. (See figure 5-2.) Maintenance on the oven does not require complete

(1) Ensure electrical power is disconnected. removal of the^ cover^^Y- It only requires that the top back portion ol the cover assembly be raised

(2) Remove 20 screws (3) and remove cover approximately 3 inches to gain access to routing of heater

/4-> element wires and replacement of the overheat thermostat.

Therefore, removal procedures will not include tagging and disconnecting electrical wiring.

5-4

a. Removal. 5-11 Timer Replacement. (See figure 5-3.)

(1) Remove the top six screws (3) on back a. Removal.

cover (4).

(1) Remove control box cover per paragraph 5-

(2) Remove six screws (5) on each side of the 7a.

top cover assembly (6).

(2) Remove timer control knob (1) by pulling

(3) Open oven door and remove three screws outward and away from timer (2).

(7).

(3) Tag and remove four wires from timer (2).

(4) Remove fan guard, wingnut, and blower wheel from both cavities of the oven per (4) Remove nut (3) and washer (4) from timer paragraph 5-14, steps 3 through 6. (2).

(5) Working from the back side of the oven, lift (5) Remove timer (2) from front panel (5).

upward on top cover assembly approximately 3 inches. Use a block of b. Installation.

wood to hold cover in this position.

(1) Position timer (2) in front panel. Observe

b. Installation, that the timer has the top marked.

(1) Remove wooden block and lower top cover (2) Install washer (4) and nut (3) to secure timer assembly. (2) to front panel (5).

(2) Align holes and install screws (5) and (7). (3) Connect wires to timer as marked.

(3) Install top six screws (3) in back cover (4). (4) Install control box cover per paragraph 5-7b.

(4) Install blower wheel, wing nut, and fan 5-12 Heater-On or Power-On Light Replacement.

guard per paragraph 5-14b, steps 2 through (See figure 5-3.)

5.

a. Removal.

5-10 REPAIR.

(1) Remove control box cover per paragraph 5-

WARNING 7a

(2) Tag and unsolder wires from light (6 or 7).

Remove electrical power from circuitry under repair. Failure to adhere to warning may (3) Press down on light retainer clip and push result in serious injury or death, outward to remove.

The following paragraphs will cover the removal and b. Installation.

installation procedures for components during the repair cycle. When applicable, paragraphs will also cover the (1) Position light retainer clip in opening and repair, adjustment, and testing of the components. Ensure push inward.

electrical power is disconnected prior to performing any of the following procedures. Components for the left and right (2) Solder wires to light terminals as marked.

cavities in the oven are identical. The following paragraphs contain procedural steps for the left cavity. The procedures (3) Install control box cover per paragraph 5-7b.

for the right cavity are the same, except that the wires go to the right (TB1-R and TB2-R) instead of to the left (TB1-L and TB2-L).

5-5

5-13 Temperature Selector Replacement. (See (3) Position knob (9) on temperature control figure 5-2.) (12) and install setscrew (8).

a. Removal. (4) Solder wires to temperature control electrical connectors as marked.

(1) Remove control box cover per paragraph 5- 7a. (5) Install control box cover per paragraph 5-7b.

(2) Loosen setscrew (8) and remove control 5-14 Fan Motor Replacement. (See figure 5-3.) The knob (9) from temperature control (12). following procedures describe the removal of the left fan motor (13). Removal of the right fan motor is the same,

(3) Tag and unsolder wires, except R or right is used instead ofL or left.

(4) Remove nut (10) and washer (11) holding a. Removal.

temperature control (12) to front panel (5).

(1) Remove control box cover per paragraph 5-

(5) Remove temperature control (12). 7a.

b. Installation. (2) Disconnect the fan motor electrical wires from TB-2L (14) as follows: RED from

(1) Position temperature control (12) in front terminal 3, BLUE from terminal 8, and panel. ORANGE from terminal 9. Cut tie-wraps as needed.

(2) Install washer (11) and nut (10) to secure temperature control (12) in front panel (5).

9 8 "’< ^"^^ 12 ^^ ^^

Figure 5-3. Component Removal

5-6

(3) Open left oven cavity door. b. Installation.

(4) Working from inside cavity, remove two (1) Position relay (1) in bracket (4) and install screws (1, figure 5-4) and fan guard (2). three washers (3) and nuts (2).

(5) Unscrew and remove wingnut (3). (2) Remove tags and solder wires to relay (1).

(6) Loosen setscrew holding fan wheel (4) to (3) Install control box cover per paragraph 5-7b.

motor shaft. Remove fan wheel (4).

5-16 Controller Replacement. (See figure 5-5.)

(7) Working from control box, remove three screws (15, figure 5-3) and spacers (16) a. Removal.

holding fan motor (13) to oven.

(1) Remove control box cover per paragraph 5-

(8) Remove fan motor (13). 7a.

b. Installation. (2) Trace wires from controller (5) to TB-2L (6) and TB-1L (7). Tag and remove wires from

(1) Position fan motor (13) and install three terminal boards.

spacers (16) and three screws (15).

(3) Cut any tie-wrap securing these wires in the

(2) Connect electrical wires to TB-2L (14) as bundle.

follows: RED to terminal 3, BLUE to terminal 8, and ORANGE to terminal 9. (4) Remove two screws (8) securing the Install tie-wraps as needed, controller (5) to the oven.

NOTE b. Installation.

Ensure that setscrew goes against the flat side (1) Position controller (5) and secure with two of shaft, screws (8).

(3) Install fan wheel (4, figure 5-4) and tighten (2) Route wires from controller (5) to terminal setscrew. Ensure that setscrew goes against boards (6 and 7) and connect as marked.

the flat side of shaft.

(3) Install tie-wraps to secure wire as needed.

(4) Install wingnut (3).

(4) Install control box cover per paragraph 5-7b.

(5) Position fan guard (2) and install two screws

(1). 5-17 Capacitor Replacement. (See figure 5-5.)

(6) Install control box cover per paragraph 5-8b. a. Removal.

5-15 Relay Replacement. (See figure 5-5.) (1) Remove control box cover per paragraph 5- 7a.

a. Removal.

(2) Tag and unsolder wires from capacitor (9).

(1) Remove control box cover per paragraph 5- 7a. (3) Remove two nuts (10) and screws (11) and remove capacitor (9).

(2) Tag and unsolder wires from relay (1).

(3) Remove three nuts (2) and washers (3) and remove relay (1) from bracket (4).

5-7

-L^-^^"^ c^x ^"^ ^^ T’^mIIIII;^---4^ ^ ^ ^^ "\ ^ ^^"\ ^3 -^. ^^ ^ 2-^^’^^ --^^

Figure 5-4. Fan Wheel Removal

5-8

8~^^ 5^ ,^1 ^Y

^^ ^(~\ Q ^^^ ^^V.’"^^’^ j^-’ /i~l ^s^^ R

\ C;^< "^. ^l >^^^ ^---^

Figure 5-5. Component Replacement

b. Installation. 5-18 Temperature Sensor Replacement. (See figure 5-6.)

(1) Position capacitor (9) and install two screws

(11) and nuts (10). a. Removal.

(2) Solder wire to terminals on capacitor (9) as (1) Open door to cavity.

marked.

(2) Remove two nuts (1) and washers (2);

(3) Install control box cover per paragraph 5-7b. remove sensor (3) from sensor assembly (4).

5-9

b. Installation. (7) Install top cover assembly per paragraph 5- 9b.

(1) Position sensor (3) on screws of sensor assembly (4). (8) Install control box cover per paragraph 5-7b.

(2) Install two washers (2) and nuts (1). 5-20 Heating Element Replacement. (See Figure 5-

8.)

5-19 Overheat Thermostat Replacement. (See fig-ure 5-7.) a. Removal.

a. Removal. (1) Remove control box cover per paragraph 5- 7a.

(1) Remove control box cover per paragraph 5- 7a. (2) Remove top cover assembly per paragraph

5-9a.

(2) Remove top cover assembly per paragraph

5-9a. (3) Remove rear cover per paragraph 5-8a.

(3) RemoveRTV-108 insulating compound from (4) Trace wires from heating element (to be overheat sensor, replaced) to terminal board (6).

(4) Remove two nuts (1) and screws (2); lift (5) Disconnect wires to be replaced from overheat sensor (3) out of oven. terminal board (6).

(5) Remove orange wire from TB2-L (4) (6) Cut tie-wraps securing wires to bundle and terminal 7. pull wires through holes and out of cover assembly.

(6) Remove white and orange wire from TB-2L

(4) terminal 10. (7) Remove screws (1) and clips (2) securing heating elements (3) to side of oven.

(7) Cut tie-wrap securing wires to bundle.

(8) Remove screws (4) and nuts (5) securing

(8) Pull on overheat thermostat and pull wires heating element to rear of oven.

through hole in top cover assembly.

(9) Remove heating element (3) with wire by

b. Installation, pulling wire through hole in oven.

(1) Position overheat thermostat (3) in hole of b. Installation.

oven and install two screws (2) and nuts (1).

(1) Route wires on new heating element through

(2) Route wires from overheat thermostat hole in back side of oven cavity.

through hole in bottom side of top cover assembly to terminal board TB2-L (4). (2) Secure heating element (3) to back side of oven cavity with screws (4) and nuts (5).

(3) Secure the orange wire to TB-2L terminal 7.

(3) Secure heating element (3) to sides of oven

(4) Secure the white and orange wire to TB-2L cavity with clips (2) and screws (1).

terminal 10.

(4) Working from back side of oven, route

(5) Apply a thick coat of insulating compound wires through holes in top cover assembly to

RTV-108 around overheat sensor and wires, terminal board (6).

(6) Secure wires to wire bundles by installing tie-wraps.

5-10 r-~.

L^ ^-^^^^ ^ Figure 5-6. Temperature Sensor Replacement

Figure 5-7. Overheat Thermostat Replacement

5-11

^-\ 6

^ ’^ \ ^/ \ ^J-’ 1’ 4

Figure 5-8. Heating Element Replacement

(5) Connect wires to terminal board (6) (6) Install rear cover per paragraph 5-8b.

terminals as follows:

(7) Install top cover assembly per paragraph 5-9b.

(a) Bottom elements, left side, left cavity:

Blue wire to terminal 13 of TB2-L (8) Install control box cover per paragraph 5-7b.

White wire to terminal 6 of TB2-L

(b) Bottom elements, right side, left 5-21 Trimpot Assembly Replacement. (See figure cavity: 5-9.) If it is determined that the oven temperature is not Blue wire to terminal 13 of TB2-L reaching or is exceeding the temperature setting on the White wire to terminal 6 of TB2-L temperature control knob, refer to the following procedural

(c) Middle element, left side, left cavity: steps to replace, adjust, or repair the trimpot assembly.

Blue wire to terminal 4 of TB2-L White wire to terminal 11 of TB2-L a. Removal. (See figure 5-9.)

(d) Middle element, right side, left cavity:

Blue wire to terminal 12 of TB2-L (1) Remove control box cover per paragraph 5- White wire to terminal 5 of TB2-L 7a.

(e) Top element, left side, left cavity:

Blue wire to terminal 4 of TB2-L (2) Remove two screws (2), nylon washers (3), White wire to terminal 11 of TB2-L and nuts (4) securing trimpot assembly (1) to

(f) Top element, right side, left cavity: bracket (5).

Blue wire to terminal 12 of TB2-L White wire to terminal 5 of TB2-L (3) Unsolder wires from trimpot.

5-12

A4-^^^

Figure 5-9. Trimpot Assembly Replacement

(4) Remove trimpot assembly (1) from control (6) Allow oven temperature to stabilize for 10 to box. 15 minutes and check that the measured temperature is within +/- 5 F of the set

b. Repair. Repair consists of replacement of defective temperature.

trimpot and/or resistor. (Refer to paragraph 5-5c.)

(7) If the oven temperature is outside the +/- 12

c. Adjustment. (See figure 5-10.) F range of the set temperature; perform calibration per paragraph 5-2Id.

(1) Remove control box cover per paragraph 5- 7a. (8) If the oven temperature is within the range of +/- 12 F, but outside of the +/- 5 F

(2) Place a thermocouple in the center of the range, it can be corrected by adjusting the oven cavity. Connect the thermocouple to a appropriate trimpot.

temperature measuring device. Close oven door. (9) To raise the temperature, turn the trimpot clockwise. To lower the temperature, turn

(3) Apply electrical power to oven. the trimpot counterclockwise. Adjust only one trimpot for each setting.

(4) Select temperature to be checked (180, 250, or 350 F). (10) After each adjustment, allow time for the temperature to stabilize.

(5) Set timer knob to 40 minutes. Red POWER

ON light and amber HEATER light illuminate.

5-13

(11) If oven temperature is not within the +/- 5 (13) Set temperature selector knob to 350 F.

F range; repeat steps 9 and 10.

(14) Repeat steps 8 and 9, except this time

(12) Remove electrical power from oven. adjust the high trimpot until temperature is

350 +/- 5 F.

(13) Remove thermocouple from oven.

(15) Remove electrical power from oven.

(14) Install control box cover per paragraph 5- 7b. (16) Remove thermocouple from oven.

d. Calibration. (See figure 5-10.) (17) Install control box cover per paragraph 5- 7b.

(1) Remove control box cover per paragraph 5- 7a. e. Install. (See figure 5-9.)

(2) Place a thermocouple in the center of the (1) Connect wires as follows:

oven cavity. Connect the thermocouple to a temperature measuring device. Close oven (a) White to bottom of low-temperature door. resistor.

(3) Turn trimpot screws counterclockwise until (b) Brown to bottom of medium-a clicking sound is heard, temperature resistor.

(4) Apply electrical power to oven. (c) Violet to bottom of high-temperature resistor.

(5) Set timer knob to 40 minutes. Red POWER ON light and amber HEATER light (d) Gray to top center of the trimpots.

illuminate.

(2) Position trimpot assembly (1) and install

(6) Set temperature selector knob to 180 F. screws (2), nylon washers (3), and nuts (4).

(7) Allow oven temperature to stabilize for 10 to (3) Install control box cover per paragraph 5-7b.

15 minutes; take temperature reading.

(8) If temperature is 175 +/- 5 F, adjust the low trimpot clockwise to increase the ^. ~\ temperature. One turn of trimpot screw will -. /^-^ /^^ either increase/decrease approximately 7 F. / (<^ / /<^y /<^/LOUVER If measured temperature is higher than 180 F adjust trimpot counterclockwise to lower the temperature. Q

0 LiJ I

(9) After adjustment, allow approximately 10 minutes for the temperature to stabilize. / / /

(10) Temperature reading should read within L_ [^ 180 +/- 5 F. If necessary, repeat steps 8 $ ^ ^ / and 9. I l l /

(11) Set temperature selector knob to 250 F.

(12) Repeat steps 8 and 9, except this time adjust the medium trimpot until temperature Figure 5-10. Trimpot Adjustment is 250 +/- 5 F.

5-14

CHAPTER 6

DIAGRAMS

6-1 GENERAL. 6-2 DIAGRAMS.

This section contains the electrical schematic necessary for Figure FO-1 provides a schematic diagram of the Model maintenance personnel to trace each circuit, make continuity 1435-B-l oven.

tests, and perform general and specific trouble analyses.

6-1/(6-2 blank)

CHAPTER 7

ILLUSTRATED PARTS BREAKDOWN

7-1 GENERAL, manufacturer or government agency whose number appear in the part number column, refer to paragraph

The maintenance parts list is applicable to the model 1435- ’-12.

B-l dual-cavity oven.

7-8 Description. The description column contains

7-2 PURPOSE ^le complete "am(R) ot the part and provides pertinent -------’~ information on superseding parts, altered parts, descrip-

The purpose of this chapter is to list the items that comprise tion> abbreviadon’ ^d reference phrase.

the oven and that are necessary for the support of the oven assembly. This chapter may be used for requisitioning, 7-? umts Per Assembly The umt per assembly storing, issuing, and identifying parts.

column contams the^^ ofan ltem used on lts next higher assembly. In the case of attaching parts, the l Q DADTC iCTcn quantity is that required to attach one assembly to the i-d KAH & U> fcU.

^ ^g^ assembly.

rngeneral, theassembliesandpartsmstalledatthetimethe ^ Usable On Code. The usable on code column end item was manufactured are listed and identified m this ;, used for codes to indicate the configurations (type, section. When a different assembly or part was installed

^^ ^^ y^ ^^^^ ^ ^^during the manufacture of later items, senes, or blocks, all

^ assemblies and parts apply. When a part applies assemblies and parts are listed. When the original assemblyr e to all configurations, no code appears m the column.

or part does not have continued application, only the preferred assembly or part is listed. Also when an 7.,, Source. Maintenance, and Recoverabilitv assemb y or part was installed during modification and the ,SMR) Code. The SMR code column contains the original does not have a continued application, only the

.’, source, maintenance, and recoverability codes assigned procured item is listed. An asterisk (-) flush right m the

^ government. Definitions of the SMR codes are part number column means requisition tins marking m

^^^^ 00-25-195.

accordance with requirements of AFI 37-162.

7-4 MAINTENANCE PARTS LIST. 7-12 MANUFACTURERS’ CODES.

The following list of CAGE codes, arranged in 7-5 Figure and ndex Number. The figure and index-------:------- 6 numerical sequence and used throughout this TO, number column contams the figure number ofthe illustration reflects the names and addresses of the manufacturers m which the part appears and the index number assigned to supplying items. The codes used conform to cataloging the specific parts shown on the illustration, handbooks H4/H8.

7-6 Part Number. The part number column contains code Manufacturer/Supplies Address the manufacturer s part number for an assembly or detail part. Hardware and other material which are generally 06383 Pa d "t r carried as bulk stores are identified by standard specification 17301 R’d d part numbers: AN (Air Force/Navy) NAS (National ^. p^ ^ 60477-3048 Aerospace Standard), and MS (Military Standard).

08800 Insulating Materials, Inc.

7-7 Commercial and Government Entities (CAGE).

^ Campbell Rd The appropriate CAGE, published in the current issue of Shenectady, NY 12306-9701 H4/H8 set A and B cataloging handbooks, is listed in this column directly opposite each part, model, and type number listed in the part number column. The CAGE identifies the manufacturer or government agency whose number appears in the part number column. For names and addresses of the

7-1

13499 Rockwell International Corp.

Collins Avionics and Communications Div.

M/S 121200 350 Collins Rd, NE Cedar Rapids, IA 52498

14776 TIA Electric Co., Inc.

22 Audrey Place P.O. Box 504 Fairfield, NJ 07006-3415

80205 National Aerospace Standard Committee, Aerospace Industries Association of America, Inc.

2550 Eye Street, NW Washington, D.C. 20005

81349 Military Specifications Promulgated by Military Departments/Agencies Under Authority of Defense Standardization Manual, 4120 3-M

89536 Fluke John Manufacturing Co., Inc.

6920 Seaway Blvd.

P.O. Box 9090 Everett, WA 98206-9090

}bW6 Military Standard Promulgated by Military Department Under Authority of Defense Standardization

7-2/(7-3 blank) y 58x 39

"75 "^ ^^^^ ----3

^ --^?^^ v34

1R .,-,-’"’"" -"""’’

\ r>^.^^^^^ ^v-... 30/..--^ 39

^""<<-, ,, -/ ^ ’^^ Y- "C^.B \ ^ 1^ " ^ ^b \\ ’"’- ^ / J \ 5

^K /’-- / ’7/ / d \

Figure 7- 7. Oven Assembly

7-4

UNITS USABLE

FIGURE & PART DESCRIPTION PER ON SMR

INDEX NO. NUMBER CAGE 1234567 ASSY CODE CODE

7-1 1 1435-B-l 14776 OVEN, Warming, elec. 1 PAFFF

2 500-417 14776 COVER, Top, oven AFF (See figure 7-2 for breakdown.)

3 AN505C6R6 88044 SCREW, Machine (AP) 20 PAFFF

4 MS51957-43B 96906 SCREW, Machine (AP) PAFZZ

5 500-414 14776 CASE, Oven 1 XB

6 500-411 14776 LINER, Oven 2 XB

7 300-1211 14776 COVER, Rear, oven XB

8 AN505C6R6 88044 SCREW, Machine (AP) 20 PAFZZ

9 200-1008 14776 POST ASSY, Center 1 AFF (See figure 7-3 for breakdown.)

10 400-963 14776 DOOR ASSY, Oven 2 AFF (See figure 7-4 for breakdown)

11 MS51957-48B 96906 SCREW, Machine (AP) 6 PAFZZ

12 200-1010 14776 ELEMENT, Heating 12 PAFZZ

13 150-187 14776 RETAINER, Heater (AP) 2 PAFZZ

14 MS51849-33 96906 SCREW, Machine (AP) 2 PAFZZ

15 MS51849-32 96906 SCREW, Machine (AP) 2 PAPZZ

16 MS21042-06 96906 NUT, Plain (AP) 2 PAFZZ

17 150-656 14776 BLOWER WHEEL 2 PAFZZ

18 150-656 14776 NUT, Wing 2 PAFZZ

19 200-392 14776 GUARD, Fan 2 PAFZZ

20 MS51849-33 96906 SCREW, Machine (AP) 2 PAFZZ

21 150-830 14776 OVEN THERMOSTAT 2. PAFZZ

22 MS51849-11 96906 SCREW, Machine (AP) 2 PAFZZ

23 MS21042-04 96906 NUT, Self-locking (AP) 2 PAFZZ

24 200-412-100 14776 SENSOR ASSEMBLY 2 PAFZZ

25 MS51849-36 96906 SCREW, Machine (AP) 2 PAFZZ

26 150-465 14776 BUSHING, Ceramic 4 PAFZZ

27 150-808-1 14776 BUSHING, Motor 2 XB

28 150-808-2 14776 BUSHING, Motor 2 XB

29 12002 14776 HANDLE, Recess 2 PAFZZ 30 MS51957-43B 96906 SCREW, Machine (AP) 2 PAFZZ

31 MS21042-08 96906 NUT, Self-locking (AP) 2 PAFZZ

32 300-1215-3 14776 BAR, Insulator 2 XB

33 300-1215-1 14776 BAR, Insulator 2 XB

34 300-1215-2 14776 BAR, Insulator 2 XB

35 KAOWOOL 14776 BLANKET, Insulation PAPZZ

36 300-1216 14776 SLIDE, Track 2 XB

37 330-1804-020 13499 SCREW, Machine (AP) 5 PAFZZ

38 200-1025 14776 PANEL, Filter 2 XB

39 MS51849-33 96906 SCREW, Machine (AP) 2 PAFZZ

40 2743 14776 PLUG, Vent 6 XB

7-5

14 /--" ’-"^^. "^ 17 16 ,<^^ ^^\

54 46 / YT^^ ^ ^"^^\

49-^^^ ^^ 42 10 44

48 /% ^V 50’ / \

Figure 7-2. Top Cover Assembly

7-6

UNITS

FIGURE & PART DESCRIPTION PER USABLE ON SMR

INDEX NO. NUMBER CAGE 234567 ASSY CODE CODE

7-2 500-417 14776 TOP COVER ASSEMBLY REP APP

(See figure 7-1 for NHA.)

400-956 14776 COVER, Control box XB

2 MS51959-28 96906 SCREW, Machine (AP) 12 PAFZZ

3 400-957 14776 WRAP, Control box 1 XB

4 MS51957-28 96906 SCREW, Machine (AP) 12 PAPZZ

5 D38999/20WG11PN 81349 CONNECTOR, Rcpt. 1 PAFZZ

6 MS51957-17B 96906 SCREW, Machine (AP) 4 PAFZZ

7 MS21042-04 96906 NUT, Self-locking (AP) 4 PAFZZ

8 400-958 14776 PANEL, Control box XB

9 AN505C6R6 88044 SCREW, Machine 6 PAFZZ

10 500-413 14776 COVER, Top, oven XB

11 150-498 14776 CAPACITOR 2 PAFZZ

12 AN505C6R6 88044 SCREW, Machine (AP) 4 PAPZZ

13 MS21042-06 96906 NUT, Plain 4 PAPZZ

14 72401 14776 TIMER, Oven acft 2 PAFZZ

15 MS35340-41 96906 WASHER, Lock (AP) 4 PAFZZ

16 100957 12204 SCREW 4 PAPZZ

17 MS35333-76 96906 WASHER, Lock (AP) 2 PAPZZ

18 MS51972-3 96906 NUT, Plain, hexagon (AP) 2 PAPZZ

19 150-307-4 14776 KNOB, Oven electric 2 PAOZZ

20 150-598-1 14776 LIGHT, Panel 2 PAFZZ

21 RCR20G680JS 81349 RESISTOR, Fixed 2 PAFZZ

22 150-598-2 14776 LIGHT, Panel 2 PAFZZ

23 RCR20G680JS 81349 RESISTOR, Fixed 2 PAFZZ

24 73-7762 14776 SWITCH, Temp. 2 XB

25 150-307-3 14776 KNOB, Oven electric 2 PAOZZ

26 MS27212-1-13 96906 TERMINAL BOARD 2 XB

27 602-J 14776 BUS, Conductor 2 PAPZZ

28 MS51957-16 96906 SCREW, Machine (AP) 4 PAFZZ

29 NAS1063B-1-13 80205 STRIP, Marker TB 2 XB

30 MS18029-11S-20 96906 COVER, Term., board 2 PAFZZ

31 SB-875-11 14776 GROMMET, NM 4 PAFZZ

32 150-826 14776 BRACKET, Relay 2 MFF

33 MS51957-28 96906 SCREW, Machine (AP) 4 PAFZZ

34 150-825 14776 RELAY, Heater oven 2 PAFZZ

35 MS21042-08 96906 NUT, Self-locking (AP) 6 PAFZZ

36 200-530 14776 MOTOR, Fan 2 PAFZZ

37 MS51957-64 96906 SCREW, Machine (AP) 6 PAFZZ

38 9316-A-194 14776 SPACER, Motor (AP) 6 MFF

39 2064FTA 14776 CONTROLLER, Oven 2 PAFZZ

40 MS51957-28 96906 SCREW, Machine (AP) 4 PAFZZ

41 MS27212-1-10 96906 TERMINAL BOARD 2 PAFZZ

42 MS51957-16 96906 SCREW, Machine (AP) 4 PAPZZ

43 NAS1063B-1-10 80205 STRIP, Marker TB 2 PAFZZ

7-7

UNITS

FIGURE & PART DESCRIPTION PER USABLE ON SMR

INDEX NO. NUMBER CAGE 1234567 ASSY CODE CODE

7-2 44 MS18029-1S-10 96906 COVBR, Term., board 2 PAFZZ

45 200-1164 14776 TRIMPOT 2 PAFZZ

46 MS51957-7 96906 SCREW, Machine (AP) 4 PAFZZ 47 2671 14776 SPACER, Sleeve (AP) 4 PAFZZ 48 MS21042-02 96906 NUT, Self-locking (AP) 4 PAFZZ 49 RJ12FY500 81349 RESISTOR, Fixed, NWW 3 PAFZZ 50 RCR20G910JS 81349 RESISTOR, Fixed, compsn, PAFZZ

91 ohm

51 RCR20G750JS 81349 RESISTOR, Fixed, compsn, PAFZZ 75 ohm

52 RCR20G470JS 81349 RESISTOR, Fixed, compsn, PAFZZ 47 ohm

53 150-971 14776 BRACKET 2 MFP

54 AD42ABS 14776 RIVET, Blind (AP) 2 PAFZZ

7-8

\ \> \V, .^’

^ .\ ^1 o --" ^ N ^1

9. /!

Figure 7-3. Center Post Assembly

7-9

FIGURE & PART DESCRIPTION PER ON SMR

INDEX NO. NUMBER CAGE 1234567 ASSY CODE CODE

T3 200-1008 14776 CENTER POST ASSEMBLY REF ~XB

(See figure 7-1 for NHA.)

A35522-1 14776 LATCH XB

2 MS51958-73B 96906 SCREW, Machine (AP) PAFZZ 3 9376-A-171 14776 SPACER, Center MPF

4 200-1006 14776 STRIKER ASSY MFF

5 MS51957-28B 96906 SCREW, Machine (AP) 2 PAFZZ 6 MS51957-46B 96906 SCREW, Machine (AP) 2 PAPZZ 7 150-1098 14776 HANDLE, Door, oven XB 8 MS51959-45 96906 SCREW, Machine (AP) 2 PAFZZ 9 AN505C6R6 88044 SCREW, Machine (AP) 2 PAFZZ

7-10

8 7 ^--^ \ \ \ /16

\ \ L /

J-^^1 ^r-.I, ^ ^\ 0^

-^^^. ^.- ;^0 .^ \\~^ \^T^

>̂1 4 ^~< .^

\ ^1 /- ^ l 1"- .k ^l^"" ^-

Figure 7-4. Door Assembly

7-11

FIGURE & PART DESCRIPTION PER ON SMR

INDEX NO. NUMBER CAGE 1234567 ASSY CODE CODE

DOOR ASSY, Oven 7-4 400-963 14776 (See figure 7-1 for NHA) REP AFP

500-412 14776 DOOR, Oven XB 2 200-1013 14776 PANEL, Oven door 1 XB 3 400-961 14776 FRAME, Oven door 1 XB 4 MS35190-221 96906 SCREW, Machine (AP) 10 PAFZZ 5 150-557 14776 LATCH, Oven door 1 PAFZZ 6 150-736 14776 BRACKET, Latch 1 XB 7 MS51959-43 96906 SCREW, Machine (AP) 2 PAFZZ 8 MS51848-48 96906 WASHER, Lock (AP) 2 PAFZZ 9 300-1212 14776 HINGE, Door, oven XB 10 MS51957-43B 96906 SCREW, Machine (AP) 6 PAPZZ 11 150-1171 14776 SPRING, Oven door 2 PAPZZ 12 SUPERWOOL 14776 INSULATION, Oven AR XB 13 200-1009 14776 GASKET, Door, oven PAFZZ 14 300-1388 14776 INSULATOR, Door XB 15 300-1389 14776 PANEL, Oven door 1 XB 16 MS51849-34 96906 SCREW, Machine (AP) 22 PAFZZ 17 294667 14776 NUT, Sheet spring 22 PAFZZ

7-12

WHT/RED IS WT/RED 18

|-- WHT/ORN IS__________ /-p.; WHT/ORN 18_____________________

TIMER [’^ "il^l |A|B|c|D|EJF|GTHn]KB ^ U^--^

(C) JT1? "T2 (2) Tl9 Y12

_________BLUE 16

^P_I8J RED 18]

BLUE 16 |-----------BLLLJ6--------.-------------------------

r- aLuE _---^---z=-L-- ---B^!------------^’^ 16_____________________________-_______ BLU 16---------’ -----:---|

ORN ’ORN 18__________________ ORN

1~…