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DC558

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Safety

It is not possible to anticipate all of the conceivable ways or

conditions under which the refrigerator may be serviced or to

provide cautions as to all of the possible hazards that may result.

Standard and accepted safety precautions and equipment should

be used when working on electrical circuits and handling toxic or

ammable materials. Safety goggles and other required protection

should be used during any process that can cause material

removal, such as when removing a leaking cooling unit and

cleaning components.

Read this manual carefully and understand the contents before

working on the refrigerator. Be aware of possible safety hazards

when you see the safety alert symbol on the refrigerator and in this

manual. A signal word follows the safety alert symbol and identi

the danger of the hazard. Carefully read the descriptions of these

signal words to fully know their meanings. They are for your safety.

CAUTION!

This signal word means a hazard, which if ignored,

can cause small personal injury or much property damage.

WARNING!

This signal word means a hazard, which if ignored,

can cause dangerous personal injury, death.

All electrical connections and repairs to the refrigerator must com-

ply with all applicable codes. Refer to the certi

cation and code

requirements section of the Installation Manual.
Turn off DC power sources before attempting to remove, service,

or repair any of the refrigerator’s electrical or electronic compo-

nents. Do not work on live electrical circuits.
Do not modify, bypass, or eliminate any of the refrigerator’s electri-

cal components or electronic circuits.
Do not wet or spray liquids on or near electrical outlets, connec-

tions or components. Most liquids, including leak detection solu-

tions, are electrically conductive and pose the potential for an elec-

tric shock hazard, short electrical components, damage electronic

circuits, and/or ignite a

re.

Do not use leak test solutions that contain ammonia or chlorine.

Ammonia and chlorine degrade copper and brass components.
The cooling unit is a sealed system under pressure! Do not try to

repair or recharge the cooling unit. Do not bend, drop, weld, drill,

puncture, saw, or strike the cooling unit.
Do not use extension cords. Do not remove the grounding prong

from the refrigerator AC power cord. Do not use a two prong adapt-

er to connect the refrigerator to the AC outlet.
Do not over-fuse electrical circuits. Use speci

ed fuses and AWG

wire sizes. The speci

cation section of this manual provides fuse

size information. Refer to the Installation Manual for the correct

AWG wire size speci

cations.

Prevent child entrapment! Before disposing of the refrigerator, re-

move all doors and fasten all shelves with retainers.
Make sure all hardware such as hinges and fasteners (retaining

screws, etc.) are properly fastened.

Contents

Safety .......................................................................................................... 2
Introduction .................................................................................................. 3

About this Manual ................................................................................... 3
Certification and Code Requirements ..................................................... 3
About Installation ..................................................................................... 3
Replacement Parts .................................................................................. 3
Technical Assistance ............................................................................... 3

Model Identifi cation ..................................................................................... 3

Cooling Unit Serial Number ..................................................................... 3
Model Number ......................................................................................... 4
Refrigerator Information Label ................................................................ 4

General Information ..................................................................................... 4
Specifi cations .............................................................................................. 4
Exploded View - SCQT4408 ....................................................................... 5
Exploded View - DC, DE, EV0788 .............................................................. 6
Electrical Connections ................................................................................. 7
Troubleshooting ........................................................................................... 8

Troubleshooting - Test A, ........................................................................ 8
Thermostat ON - Compressor does not run ............................................ 8
Troubleshooting - Test B, Compressor resistance .................................. 8
Troubleshooting - Test C, Power supply output voltage with comp. load 8
Troubleshooting - Test D, Compressor Amp draw ................................... 8
Troubleshooting - Test E, Evaporator thermistor temp. and resistance .. 8
Troubleshooting - Test F, Insufficient cooling .......................................... 9
Troubleshooting - Test G, Refrigerator is too cold ................................... 9
Troubleshooting - Test H, Correct ventilation .......................................... 9

Wiring Schematic ...................................................................................... 10
Remove / Replace the Refrigerator ............................................................11

Remove the Refrigerator ........................................................................11
Replace the Refrigerator ........................................................................11

Figures

Fig. 1 - Cooling Unit Bar Code Label Location. ....................................... 3
Fig. 2 - Model Number ........................................................................... 4
Fig. 3 - Refrigerator Information Label Location ..................................... 4
Fig. 4 - Exploded View - SCQT4408 ....................................................... 5
Fig. 5 - Exploded Rear View ................................................................... 6
Fig. 6 - Approved Vent Combinations ..................................................... 9
Fig. 7 - Wiring Schematic ...................................................................... 10