Amana P1311102W, ESU15JW, P1311103W, ESU20JW, P1311104W Service Manual

...

0 (0)

Service

Upright Freezers

Models and manufacturing

numbers in this manual

ESU12JW P1311101W ESU15JW P1311102W ESU17JW P1311103W ESU20JW P1311104W ESUF15JW P1311105W ESUF17JW P1311106W ESUF20JW P1311107W ESU12JW P1179615W ESU15JW P1179616W ESU17JW P1179617W ESU20JW P1179618W ESUF15JW P1179619W ESUF17JW P1179620W ESUF20JW P1179621W AU120KW P1317701WW AU120KW P1317714WW AU150KW P1317702WW AU150KW P1317715WW AU170KW P1317703WW AU170KW P1317716WW AU200KW P1317704WW AU200KW P1317717WW AUF150KW P1317705WW AUF150KW P1317718WW AUF170KW P1317706WW AUF170KW P1317719WW AUF200KW P1317707WW AUF200KW P1317720WW

This manual is to be used by qualified appliance technicians only. Amana does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.

RS1500000

Revision 2

November 1999

Important Information

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE

INFORMATION IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS.

Important Information

Important Notices for Consumers and Servicers

To avoid risk of serious injury or death, repairs should not be attempted by an unauthorized personal, dangerous conditions (such as exposure to electrical shock) may result.

Amana will not be responsible for any injury or property damage from improper service procedures. If performing service on your own product, assume responsibility for any personal injury or property damage which may result.

To locate an authorized servicer, consult your telephone book or the dealer from whom you purchased this product. For further assistance, contact: 1 (800) 628-5782 first, if no answer call number listed below.

CONSUMER AFFAIRS DEPT. OR 1 (800) 843-0304 AMANA APPLIANCES CALL AMANA, IOWA 52204

If outside the United States contact:

AMANA ATTN: CONSUMER AFFAIRS DEPT AMANA, IOWA 52204, USA Telephone: (319) 622-5511 Facsimile: (319) 622-2180 TELEX: 4330076 AMANA CABLE: "AMANA", AMANA, IOWA, USA

WARNING

CAUTION

Recognize Safety Symbols, Words, and Labels

DANGER

DANGER - Immediate hazards which WILL result in severe personal injury or death.

WARNING

WARNING - Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION

CAUTION - Hazards or unsafe practices which COULD result in minor personal injury or product or property

damage.

RS1500000 Rev 2 2

Table of Contents

Important Information ................................................. 2

Model Identification .................................................... 4

Installation Instructions

Unpacking ............................................................... 5

General ................................................................... 5

Location................................................................... 5

Electrical Connection ............................................... 5

Door Handle ............................................................ 6

Leveling ................................................................... 6

Test After Installation ............................................... 6

General Instructions

Electrical Requirements .......................................... 7

Asure Extended Service Plan .............................. 7

Proper Disposal of your Freezer .............................. 7

Model Identification ................................................. 7

Operating Instructions

Setting Controls ....................................................... 8

Temperature Control ............................................... 8

Audible Alarm (Some models) ................................. 8

Features .................................................................. 9

Reversible Rack (some models) ............................. 9

Freezing Guide ........................................................ 9

Care and Cleaning

General ................................................................. 10

Adhesives.............................................................. 10

Door Gaskets ........................................................ 10

Odor Removal ....................................................... 10

Defrosting .............................................................. 11

Light Bulb (some models) ...................................... 11

General Tips

Energy Tips ........................................................... 12

Vacation Tips ......................................................... 12

Normal Operating Sounds ..................................... 12

Before Calling For Service..................................... 12

Operating Sounds ................................................. 13

Component Testing

Refrigeration System Test Procedures .................. 14

Testing Main Condenser ........................................ 15

Testing for Leaks ................................................... 16

Electrical System ................................................... 16

Compressor Electrical Tests.................................. 16

Testing Compressor Direct .................................... 16

Capacitor ............................................................... 17

Overload Protector ................................................ 17

Testing Overload Protector .................................... 17

PTC Relay ............................................................. 18

Testing PTC Relay................................................. 18

Interior Light and Switch ........................................ 18

Checking Control Operation .................................. 18

Temperature Control ............................................. 19

Defrost Timer ........................................................ 19

Checking Timer ..................................................... 20

Defrost Heater and Thermostat

No Defrosting Models ............................................ 20

Freezer Fan No-Defrosting Models ....................... 21

Testing Freezer Fan Motor .................................... 21

Troubleshooting................................................... 23-25

Disassembly Procedures

Replacing Dryer..................................................... 26

Replacing Compressor .......................................... 26

Replacing Heat Exchanger

Refrigerated Shelf Model ....................................... 27

Replacing Heat Exchanger

No-Defrosting Models............................................ 28

Replacing Freezer Shelving

Refrigerated Shelf Models ..................................... 29

Replacing Freezer Coil No-Defrosting Models ....... 30

Replacing Light Switch .......................................... 31

Replacing Control .................................................. 31

Replacing Heater................................................... 32

Replacing Freezer Fan Motor ................................ 32

Cabinet Door Assembly ......................................... 33

Door Handle .......................................................... 34

Door Lock Assembly ............................................. 34

Removing Door Lock Assembly ............................ 35

Cabinet Door Alignment ........................................ 35

Checking Gasket Seal ........................................... 35

Improving Gasket Seal .......................................... 35

Hinge Adjustments ................................................ 35

Cabinet Assembly ................................................. 36

Service Information

System Operation.................................................. 37

Checking Operational Pressures ........................... 38

Operational Testing ............................................... 39

Service Hints ......................................................... 39

Refrigeration System Complaints .......................... 40

Refrigerant Leaks .................................................. 41

Evacuation and Charging Procedures ................... 42

HFC134a Service Information ............................... 43

Health, Safety, and Handling ................................. 44

Drier Replacement ................................................ 44

Replacement HFC134a Service Compressor........ 45

Refrigerant Charge ................................................ 45

Leak Testing .......................................................... 45

Evacuation and Charging ...................................... 45

Dehydrating Sealed Refrigeration System ............. 47

Brazing .................................................................. 47

Refrigerant Precautions ......................................... 47

Open Lines ............................................................ 47

Line Piercing Valves .............................................. 48

Altitude Adjustment ............................................... 48

Cabinet Shell ......................................................... 49

Cabinet Liner (Food) ............................................. 49

Drain System ......................................................... 49

Wiring Diagram and Schematic ........................... 50-52

3 RS1500000 Rev. 2

Model Identification

Upright freezer models vary in trim and accessories, but all models have the same basic construction. "Operating Instructions" and "Service Instructions" apply to all cabinets unless stated otherwise.

1997 Model Identification

ESU F 15 J W

Color

W  White

Series

H J

Storage Capacity

12  Cubic Foot 15  Cubic Foot 17  Cubic Foot 20  Cubic Foot

Defrost Type

Blank  Manual F  Free-O-Frost

Product

ESU  Energy Saving Upright Freezer

For positive identifications of individual units, state complete serial number, model, and type. This information is found on the serial plate located on front upper right hand corner of foodliner or on some models, exterior back of the outer casing.

An explanation of coding contained in Type position is shown below.

1998 and 1999 Model Identification

A U F 7 0 K W

Color

W  White

Series

K 

Feature Level

0  Good

Storage Capacity

7  Cubic Foot 10  Cu bic Foot 15  Cubic Foot 22  Cubic Foot

Defrost Type

Blank  Manual F  Free-O-Frost

Product

U  Upright Freezer

RS1500000 Rev. 2 4

Amana

Installation Instructions

Unpacking

Remove all protective packaging. Cardboard shipping braces and/or protective tape used to prevent damage to baskets, shelves, speciality racks, and compartment dividers during shipment. Use soapy water to remove any adhesive residue. Do not use alcohol or nail polish remover. Door/Lid, handles, and hinges:

 Support and secure door lid before transporting or

moving the freezer.  Install freezer handle if applicable  Do not use door or handle for leverage to lift or push

unit.

Defrost drain plug and drain pan:

 Verify drain plug is installed on non-frost-free

freezers  Before operating frost-free freezer verify frost drain

pan is installed behind toe grille located at bottom

front of freezer with drain hose placed in the pan.

Toe grille:

 Toe grille at bottom front of freezer can be removed

to locate drain tube and levelling gliders.  Remove toe grille by grasping both ends and pulling

straight outward. Replace by pressing ends of toe

grille into slots on cabinet and snapping into place.

Location

These recommendations and explanations may help customer receive maximum efficiency from freezer and avoid service calls.

CAUTION

To avoid personal injury, wear gloves when installing freezer.

To avoid property damage, protect soft vinyl or other flooring with cardboard, rugs or other protective material during installation or servicing.

If freezer is to be placed in basement, back porch, etc., place freezer on wooden slats up off floor.

1. Freezer is designed for installation as a "freestanding" (not "built-in") unit.

2. Locate freezer with at least 3 inches of clearance on both ends and back to provide adequate air circulation to dissipate condenser heat.

3. Avoid locations near stoves, radiators, hot air ducts, or where sun may cause excessive heat.

4. Do not locate where surrounding temperature could drop below 32°F (0°C). Temperatures below 32°F (0°C) cause compressor oil to thicken delaying lubrication of sensitive components at compressor start-up.

5. Avoid placing freezer on plush carpet which may retard air flow over bottom, causing bottom sweating.

Toe grille

General

 Secure door before moving freezer. Do not use door

or handle to lift or push freezer. If hinges must be removed, check instruction label on rear of freezer cabinet.

 Amana freezers are currently rated for domestic use,

not designed for commercial application.

 Confirm the following items are installed.

Free-O-Frost Upright Freezer Models Defrost drain pan behind toe grille.

Standard Upright Freezer Models

Drain plug in bottom front of freezer liner. (some models)

Electrical Connection

1. Electrical supply should be checked for proper voltage and ground.

WARNING

Do not, under any circumstances, cut or remove the round grounding prong from the plug. Freezer must be grounded at all times. Do not remove warning tag from power cord.

2. Avoid extension cords. If absolutely necessary, use an Appliance Extension cord (at least 16 AWG) of less than 10 feet. If possible, have freezer on separate circuit.

5 RS1500000 Rev. 2

Installation Instructions

Door Handle

1. If handle trim has not been factory installed, slide right edge of handle trim under right edge of trim retainer. Verify rib on right inside edge of handle trim fits into trim retainer notch. Snap outside edge of handle trim over outside edge of trim retainer.

2. Install handle on freezer door as shown. Verify freezer handle is angled inward towards opposite side of freezer. Secure handle to freezer door with screws provided. Verify screws are secure.

3. Slide end caps over ends of handle until end caps snap in place. End cap marked L goes on top end of handle. End cap marked R goes on bottom end of handle.

End caps

Handle

Trim retainer

Trim retainer notch

Leveling

1. Install leveling legs under front corners behind toe grille.

2. Level freezer side to side and tilt freezer 1/4" from front to back. Turn legs clockwise to raise freezer and counterclockwise to lower freezer. If freezer cannot be level due to flooring, use shims under rear of freezer cabinet to level freezer.

Leveling foot

Handle trim

3. Check freezer 2 or 3 weeks after loading with food and confirm freezer is level.

Test After Installation

1. For proper compressor operation, voltage must be measured at the compressor terminals at the moment of starting. Voltage must be in the range shown on Freezer Wiring Diagram.

2. Check freezer is reasonably level.

3. Check lid gasket seal.

4. Be sure light(s) work.

5. Check lock.

6. Wipe off any dirt and smudges.

RS1500000 Rev. 2 6

6 RS1500000 Rev. 0

General Instructions

Electrical Requirements

WARNING

Electrical Grounding InstructionsThis freezer is equipped with a three-prong (grounding) plug for protection against possible shock hazards. If a twoprong wall receptacle is encountered, contact a qualified electrician and have the two-prong wall receptacle replaced with a properly grounded three-prong wall receptacle in accordance with the National Electrical Code.

Freezers are designed to operate on a separate 103 to 126 VAC, @ 15 A., with a 60 Hz cycle.

Do not under any circumstances cut or remove the round grounding prong from the plug. Freezers must be grounded at all times. Do not remove warning tag from power cord.

Do not use a two-prong adapter. Do not use an extension cord.

Asure Extended Service Plan

Amana offers long-term service protection for this new freezer. Asure Extended Service Plan is specially designed to supplement Amanas strong warranty. This plan covers parts, labor, and travel charges. Call 1-800-528-2682 for information.

Proper Disposal of your Freezer

NOTE: Child entrapment and suffocation are not

problems of the past. Junked or abandoned freezers are still dangerouseven if they sit for "just a few days". When you get rid of your old freezer, please follow the instructions below to help prevent accidents.

Model Identification

Read the Owner's Manual thoroughly. This manual provides proper maintenance information for consumers. Any questions, call the Consumer Affairs Department at 1-800-843-0304 inside U.S.A. and 1-319-622-5511 outside U.S.A.

Complete enclosed registration card provided in owners manual and promptly return. If registration card is missing, call the Consumer Affairs Department.

When contacting Amana, provide product information. Locate product information on the serial plate. Chest freezer serial plate is located on upper right wall. Record the following information:

Model Number: Manufacturing Number: S/N or Serial Number: Date of purchase: Dealers name and address:

Keep a copy of sales receipt for future reference. Locate an authorized servicer by calling

1-800-NATLSVC (628-5782) inside U.S.A. and 319-622-5511 outside U.S.A. Warranty service must be

performed by an authorized servicer. Amana also recommends contacting an authorized servicer if service is required after warranty expires.

Amana offers a complete line of appliances, refrigerators, freezers, ranges, cooktops, wall ovens, microwave ovens, dishwashers, washers and dryers. Amana also manufactures a complete selection of high efficiency gas furnaces plus both central and room air conditioners.

Enjoy this new Amana freezer.

Before Throwing Away Old Freezers:

 Take off the doors.  Leave the shelves in place to prevent children from

easily climbing inside unit.

7 RS1500000 Rev. 2

Operating Instructions

Setting Controls

This freezer operates most efficiently in normal household temperatures of 65° to 90°F.

Temperature Control

Locate temperature control on right side of interior freezer cabinet wall.

Audible Alarm (Some models)

Locate audible alarm on right side of freezer cabinet near bottom right corner.

Alarm sounds if temperature in freezer rises 10°F or more above normal for selected setting. Alarm may sound if temperature control dial is turned to a much lower/colder setting or if a large amount of unfrozen food is added at one time.

Alarm is controlled by a three-position switch.  0 prevents alarm from sounding when freezer is

warm, such as during initial start-up or defrosting.

 Ö sounds alarm regardless of temperature. Alarm

system should be tested at least once a month.

 1 is proper setting for normal freezer use. Return

switch to 1 after defrosting.

OFF

When control is set to OFF, freezer will not cool. Initially, set control to 4. Wait 3 hours after connecting power for freezer to reach desired temperatures, then add food. After 24 hours, adjust control as desired. 1 is warmest setting and 7 is coldest.

Set temperatures precisely using a household thermometer that includes temperatures between -5° to 50°F. Put thermometer snugly between frozen packages in freezer. Wait 58 hours. If freezer temperature is not 0° to 2°F, adjust control, one number at a time. Check again after 58 hours.

RS1500000 Rev. 2 8

Operating Instructions

Features

Door Lock

Lock freezer door by completing the following:

1. Insert key into lock approximately 1/4".

2. Turn key clockwise to lock door and counterclockwise to unlock door.

WARNING

To help prevent child entrapment keep key out of reach of children and away from cabinet.

Reversible Rack (some models)

Racks separates food for more storage space. Remove rack by releasing rack from shelf wires. Pull

down if located under shelf or lift up if located above shelf.

Replace rack by positioning on top or underneath shelf wires. Slide rack until rack locks in place.

Freezing Guide

Wrapping

 Use moisture-vapor-proof materials and seal tightly.

When lids are furnished, follow manufacturer's directions for best results.

 Choose materials which are labeled for freezer use.

Ordinary waxed paper or butcher paper does not provide proper protection for frozen food. Materials not designed for freezer use may give off odors.

Freezing Guidelines

Item Recommended storage

times at 0° F. (Months)

Meat

Beef roast or steak (fresh)

Meat casserole (cooked) Hamburger 3–4 Pork (cured) 1–3 Pork chop or roast (fresh) Roast (fresh) 4–8 Sausage 1–3 Veal 8–9

Lamb Poultry

Chicken (fresh) 9–12 Chicken (cooked) 1–3 Duck 6 Goose 6 Turkey (fresh) 6–12 Turkey (cooked) 1–3

Fish Vegetables Fruits Bread and Pastries

Bread 1–3 Yeast Rolls 1–3 Layer Cake 2–4 Fruit Pie (unbaked) 8

Ice Cream, Sherbert

9–12

3–6

4–8

9–12

3–6

1–2

9 RS1500000 Rev. 2

Care and Cleaning

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to freezer before cleaning. After cleaning, restore power.

CAUTION

To avoid personal injury or property damage, read and follow all cleaning product manufacturer's directions.

General

1. Wash surfaces with four tablespoons baking soda dissolved in one quart warm water and a soft, clean cloth.

2. Rinse surfaces with warm water. Dry surfaces with a soft, clean cloth.

NOTE:

 Do not use the following items:

 abrasive or harsh cleaners, ammonia,

chlorine bleach, etc.  concentrated detergents or solvents  metal scouring pads

These items can scratch, crack and discolor

surfaces.

 Do not place shelves or accessories in dish-

washer.

Odor Removal

1. Remove all food.

2. Wash all interior surfaces including door, floor and walls according to "General" instructions. Pay special attention to corners, crevices and grooves. Include all accessories, shelves and gaskets.

3. Rinse and dry thoroughly.

4. Wrap foods in tightly sealed wrap or containers to prevent further odor. After 24 hours, check if odor was eliminated.

If odor was not eliminated, do the following:

1. Complete procedures in steps 13 above.

2. Pack freezer with crumpled sheets of black and white newspaper.

3. Place charcoal briquettes randomly throughout newspaper.

4. Close door and let stand 2448 hours.

5. Remove charcoal briquettes and newspapers. Wash all interior surfaces including door, floor and walls according to "General" instructions. Pay special attention to corners, crevices and grooves. Include all accessories, shelves and gaskets.

6. Wrap foods in tightly sealed wrap or containers to prevent further odor. After 24 hours, check if odor was eliminated.

If odor was still not eliminated, contact Consumer Affairs Department at 1-800-843-0304.

Adhesives

Remove glue residue by dabbing toothpaste over adhesive. Rub toothpaste into adhesive with fingers until adhesive loosens. Rinse surface with warm water. Dry surface with a soft, clean cloth.

Door Gaskets

1. Clean door gaskets every three months or more frequently if necessary.

2. Rinse and dry gaskets thoroughly.

3. Apply a light film of petroleum jelly on cabinet hinge side to keep gaskets pliable.

RS1500000 Rev. 2 10

Care and Cleaning

Defrosting

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to freezer before defrosting. After defrosting, restore power.

Defrost freezer when frost has accumulated to 1/4". Upper section of freezer will normally have more frost than lower section.

1. Transfer food to an alternate cooling source.

2. Remove toe grille by pulling forward.

3. Remove interior drain plug from freezer.

4. Verify drain pan is beneath drain opening to catch defrost water.

5. Place pans of hot water in freezer.

6. Wash all interior surfaces including door, floor and walls.

7. Replace inside drain plug. Drain plug must be properly installed for efficient operation.

Light Bulb (some models)

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to freezer before replacing light bulb. After replacing light bulb, restore power.

CAUTION

To avoid personal injury or property damage, observe the following:

 Allow light bulb to cool.  Wear gloves when replacing light bulb.

Remove light bulb cover by pressing front and back of light bulb cover together. Replace light bulb with 15-watt appliance bulb, Amana part # A3073101.

11 RS1500000 Rev. 2

General Tips

Energy Tips

This freezer is designed to be one of the most energy efficient freezers available. Reduce energy use by doing the following:

 Operate in normal room temperatures away from heat

sources and direct sunlight.  Set controls no colder than necessary.  Keep freezer full.  Keep door gaskets clean and pliable. Replace gaskets

if worn.

Vacation Tips

For long vacations, do the following:

1. Empty freezer.

2. Unplug freezer.

3. Clean freezer including door gaskets.

4. Prop doors open, so air can circulate inside.

Normal Operating Sounds

Todays freezers have new features and are more energy efficient. As a result, certain sounds may be unfamiliar. These sounds are normal and will soon become familiar. These sounds also indicate freezer is operating and performing as designed.

1. Temperature Control

Temperature control clicks when starting or

stopping compressor.

2. Evaporator

Evaporator refrigerant flow gurgles, pops or sounds

like boiling water.

3. Evaporator Fan Motor

Makes a whirring noise or sounds like rushing air.

4. Compressor

Compressor has a high pitched hum or pulsating

sound.

5. Defrost Heater

Sizzling, hissing, or popping sounds are caused by water dropping on the defrost heater during the defrost cycle.

6. Defrost Drain Pan

Dripping sounds is defrost water falling onto drain pan.

7. Defrost Timer

Automatic timer sounds like an electronic clock that snaps in and out of the defrost cycle.

8. Insulation

Foam insulation is very energy efficient and has

excellent insulating capabilities. However, foam insulation is not as sound absorbent as previously used fiberglass insulation.

Before Calling For Service

Freezer does not operate.

 Confirm temperature control is on.  Confirm freezer is plugged in.  Check fuse or circuit breaker. Plug in another

item at that wall outlet.

 Wait 20 minutes to see if freezer restarts. If

freezer control is on, freezer may be in defrost cycle.

Freezer still wont operate.

 Unplug freezer. Transfer food to another unit or

place dry ice in freezer to preserve food.

 Call 1-800-NATLSVC (628-5782) inside U.S.A.

and 319-622-5511 outside U.S.A. to locate an authorized servicer.

Food temperature appears too warm.

 See above sections.  Allow time for recently added food to reach

freezer temperature.  Check gasket for proper seal.  Adjust temperature control.

Freezer runs too frequently.

 It may be normal to maintain an even temperature.  Doors may have been opened frequently or for

an extended period of time.  Adjust temperature control.  Check gaskets for proper seal.  Confirm freezer has proper clearance on each side.

Water droplets form on outside of freezer.

Check door gaskets for proper seal.

Water is on floor beneath freezer.

 Confirm drain plugs are properly positioned.  Empty drain pan .

Freezer has an odor.

See "Odor Removal" instructions in "Care and Cleaning" section.

Freezer makes unfamiliar sounds or seems too loud.

It may be normal. See "Normal Operating Sounds" section, this page.

RS1500000 Rev. 2 12

General Tips

Operating Sounds

Todays freezers are designed for economical operation and energy efficiency. New features and designs may create sounds which are different. Following is normal operating sounds which may be encountered, no service call is required.

Defrost heater:* Sizzling, hissing, or popping sounds are cause d by water dropping on the defrost heater during the defrost cycle.

Temperature control: Clicks when the compressor starts or stops.

Defrost timer:* Automatic timer sounds like an electric clock that snaps in and out of the defrost cycle.

Evaporator: Gurgling sound, like boiling water, when refrigerent flows through the freezer cooling coil.

Insulation: High-efficiency foam is used for its excellent energy insulation capacity, even though it does not offer the same level of sound insulation as less energy-efficient fiberglass insulation once foun d in freezers.

* Frost-free models only

Freezer fan:* Makes a whirring noise or sounds like rushing air as cold air ciculates in the freezer compartment.

Compressor: Runs faster for higher efficiency and has a higher pi tched hum or pulsating sound.

Defrost drain pan:* Dripping sound is defrost water fa lling ont o dr a in pan.

13 RS1500000 Rev. 2

Component Testing

To avoid risk electrical shock, personal injury, or death,

WARNING

power to be connected. When removing any wiring from terminals they must be replaced on the same terminals. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Refrigeration System Test Procedures

Careful testing of the refrigeration system is essential in determining if a malfunction is present. Temperature testing is accomplished by using a three lead thermocouple temperature tester in specific locations.

1. Test point 1, is attached to inlet on the evaporator coil

2. Test point 2, is attached to outlet on the evaporator coil.

3. Test point 3, is approximately 68 inches from suction port of compressor on the suction line.

4. Thermocouple tips should be attached securely to the locations specified.

5. Do not test during initial pull down, Allow one complete OFF cycle or a balanced temperature condition to occur before proceeding.

6. Unit must operate a minimum of 20 minutes after thermocouples are installed.

NOTE: It may be necessary to turn control colder to maintain required operating time.

7. Wattage reading must be recorded with temperature test to confirm proper operation.

8. Suction and Head pressures are listed in the specification chart.

always disconnect electrical power source to the freezer before attempting to service, unless test procedures require

Evaporator

Heat exchanger

Compressor

Refrigerant Flow Diagram

Condenser

Manual Defrost

Dryer

Discharge line

Suction line

Condenser

Heat exchanger

Suction line

Drier

Discharge line

Compressor

Evaporator

Refrigerant Flow Diagram

Automatic Defrost

RS1500000 Rev. 2 14

Component Testing

To avoid risk electrical shock, personal injury, or death,

WARNING

Testing Main Condenser

Before testing condenser, verify no leaks exist elsewhere. Condenser loop must be disconnected from the system and tested separately. The following illustration shows the tubing as it is routed and fastened in the freezer cabinet flange.

NOTE: Verify a leak is not present in any external

tubing or joints before performing the following test.

Following equipment is required to test.  An access fitting  A drum of oil pumped nitrogen.  Pressure regulator.  Two gauges.  Line valve and tubing. Access fitting should be prepared as follows:

always disconnect electrical power source to the freezer before attempting to service, unless test procedures require

Condensor bottom external

Suction

To condensor

To evaporater

Discharge

From condensor

Gauges

Pressure regulator

Line valve

Nitrogen Tank and Fittings

To condensor

Process From

Discharge

Suction

condensor

Tube process

Compressor Cutting or Unsoldering

Points No Defrost Models

Prepare equipment as required and test condenser as follows:

1. Cut tubing at arrow to condenser and from condenser as shown in the previous illustration.

2. Crimp and solder the end to condenser that enters into the cabinet.

3. Silver solder access fitting of test equipment to the end from condenser tube that emerges from the cabinet.

4. Pressurize the system to 250 pounds with dry nitrogen. Test all connections for leaks with a soap solution.

5. Check the pressure gauge. If pressure drops, there is a leak. However, it may be necessary to allow as much as 24 hours for test results to verify no leaks exist. If there are no leaks, reconnect the tubing. Evacuate and recharge the system.

Tube process

Compressor Cutting or Unsoldering

Points Refrigerated Shelf Models

15 RS1500000 Rev. 2

Component Testing

To avoid risk electrical shock, personal injury, or death,

WARNING

always disconnect electrical power source to the freezer before attempting to service, unless test procedures require

Testing for Leaks

DANGER

Free oxygen will explode on contact with oil. Acetylene will explode spontaneously when put under pressure.

To prevent violent explosions that may result in serious injury or death to persons in or near the immediate vicinity, NEVER use oxygen or acetylene for pressure testing or cleanout of refrigeration systems.

WARNING

To avoid severe personal injury or death from fire, keep system free from contamination due to presence of air. Follow instructions exactly.

Electrical System

WARNING

To avoid possible electric shock, personal injury or death disconnect power before servicing. Follow specific steps listed in this manual for testing or replacement of a suspected failed component.

Compressor Electrical Tests

Compressor terminals on all models can be reached only from the rear of the cabinet. If freezer does not operate, do not assume compressor has failed until all other possibilities are eliminated.  Is current entering the compressor through the power

cord?

 Check for low voltage at the compressor terminals, a

minimum of 100 volts is required for compressor to start.

 If the necessary voltage is available, check for failures

in:  Over load protector  Starting relay  Temperature control,  Cabinet wiring harness.

Testing Compressor Direct

To test compressor with no other wiring in the circuit is called DIRECT TEST. Safest way to check the compressor is by using a compressor tester.

Run

Common

Start

Switch

All electrical components are grounded to the cabinet. The green center conductor of three wire lead cord is also attached to the cabinet to provide a grounding circuit when the lead cord is plugged into a properly grounded electrical outlet. After replacing an electrical component, always verify the ground wire is reconnected. The electrical outlet from which the appliance is to receive its power should always be checked to verify it is properly wired.

RS1500000 Rev. 2 16

Power

cord

Capacitor connections

Compressor Tester

+ 36 hidden pages