Table of Contents
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© 2007 NORCOLD, INC. All rights reserved.
Service Manual
DCXXXX, DEXXXX Model
Compressor Refrigerators
MODELS
DC0040(K), DC0051(K)
DE0040, DE0051
DE0240T, DE0251T
DC0740(X), DE0740(X)
DC0751(X), DE0751(X)
Please note that the "X" at the end of certain model
numbers indicates the equipment color; where "X" can
be "B" (black), "S" (stainless steel, or "W" (wrapped
door - stainless steel).
Part No. 631842A (08-08-07)
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Table of Contents
Troubleshooting
Related Manuals for Norcold DC0040
Summary of Contents for Norcold DC0040
- Page 1 Please note that the "X" at the end of certain model numbers indicates the equipment color; where "X" can be "B" (black), "S" (stainless steel, or "W" (wrapped door - stainless steel). Part No. 631842A (08-08-07) © 2007 NORCOLD, INC. All rights reserved.
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Page 2: Table Of Contents
Auto Shut-Off Device............8 Operating the Shut-Off Device ........8 Troubleshooting - Procedure I Proper Ventilation ............9 Wiring Schematic ............9 Troubleshooting - Quick Reference Quick Reference Troubleshooting Steps....... 10 Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 3: Troubleshooting - Procedure A
Note: Measurements taken with 12.8V DC or 120V AC power supply. Black Brown Figure 2. Fuse Locations Figure 1. Temperature Control NOTE: If 10 Amp fuse is blown, check the vehicle's wiring. Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 4: Troubleshooting - Procedure B Compressor Resistance
Remove the black wire to the compressor. Measure the resistance of the compressor between point A and point B. Refer to Figure 3. Figure 3. Measuring Compressor Resistance Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 5: Troubleshooting - Procedure C
Procedure D Note: Measurements taken with 12.8V DC or 120V AC power supply. Figure 4. Measuring Power Supply Output Voltage Figure 5. Measuring AC Power Supply Output Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 6: Troubleshooting- Procedure D
60Watt = 2.7 – 3.3Amps 40Watt > 2.0Amps Compressor Change Failure Cooling Unit 60Watt > 3.3Amps Note: Measurements taken with 12.8V DC power supply. Figure 6. Measuring Compressor Amp Draw Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 7: Troubleshooting - Procedure E
2.5 - 3.1 KΩ 2.1 KΩ 1.9 - 2.3 KΩ 1.9 KΩ 1.7 - 2.0 KΩ 1.8 KΩ 1.6 - 1.9 KΩ Table 1. Evaporator Thermistor Resistance Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 8: Troubleshooting - Procedure F Insufficient Cooling
NOTE: The refrigerator will not restart until the ambient conditions allow for normal operation. NOTE: To test the shut-off device's functionality, heat the device with a heat gun. Refer to Figure 9. Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 9: Troubleshooting - Procedure I Proper Ventilation
(OPTIONAL) HIGH TEMPERATURE ELECTRONIC PROTECTER ELECTRONIC THERMOSTAT AMBIENT BUZZER (OPTIONAL) CURRENT THERMISTOR PROTECTOR LOW TEMPERATURE PROTECTER DC/AC PART AMBIENT B2B-EH THERMISTOR EHR-2 BLACK BLACK EVAPORATOR THERMISTOR Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... -
Page 10: Troubleshooting - Quick Reference
Refer to Figure 12. If amperage is not within range, refer to Procedure D. Figure 10. Checking Compressor Voltage Figure 12. Measuring the Amp Draw Refrigerator Service Manual DC0040(K), DC0051(K), DE0040, DE0051, DE0240T, DE0251T, DC0740(X), DE0740(X), DC0751(X), DE0751(X) Models... - Page 11 This Page Intentionally Left Blank.
- Page 12 NORCOLD, Inc. Customer Support Dept. NORCOLD, Inc. Telephone: 800-543-1219 P. O. Box 4248 Fax: 937-497-3183 Sidney, OH 45365 www.norcold.com DCXXXX, DEXXXX C 631842a (08-08-07) omprEssor EfrigErator ErviCE anual...