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Norcold NON-TEK II DE 251D User Manual

Norcold NON-TEK II DE 251D
29 pages
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SERVICE MANUAL
DUAL ELECTRIC AND 12 VOLT REFRIGERATORS
NON-TEK II MODELS
DE 828
DE 704C
DE 728
DE 400C
DE 251D
DE 250F
DE 254
DC 230
MRFT 615B
MRFT 630B
MRFT 640B
MRFT 660
SRBD 630
TRBD 630
SCQT 6406
SCQR 6800
V2000
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Norcold NON-TEK II DE 251D Specifications

General IconGeneral
BrandNorcold
ModelNON-TEK II DE 251D
CategoryRefrigerator
LanguageEnglish

Summary

SERVICE MANUAL

DUAL ELECTRIC AND 12 VOLT REFRIGERATORS

Manual covers dual electric and 12-volt refrigerators.

NON-TEK II MODELS

Specific focus on Non-Tek II model refrigerators.

INTRODUCTION

Purpose of Service Manual

Outlines the manual's purpose: general service reference for Norcold Dual Voltage and 12 Volt refrigerators.

Model Designation

Explains Norcold refrigerator model designations for RV/marine use.

Terminology

Defines terms specific to Norcold Dual Voltage and 12 Volt refrigerators.

GENERAL INFORMATION

Installation

Provides guidelines for proper installation of Norcold refrigerators.

VENTILATION

Details required air flow and venting for efficient operation and preventing overheating.

Leveling

Discusses leveling requirements for Norcold Dual Voltage and 12 Volt refrigerators.

Power Sources

AC POWER CONNECTION

Instructions for connecting the refrigerator to a 120 VAC power source.

12 VDC OPERATION

Details on connecting and operating the refrigerator on a 12 VDC power source.

WIRE SIZE TABLE

Table specifying recommended wire sizes for DC power connections.

Trouble-Shooting Procedures When Operating The Refrigerator on 120 VAC

Step-by-step troubleshooting for AC operation issues.

Trouble-Shooting Procedures When Operating The Refrigerator On 12 VDC

Step-by-step troubleshooting for DC operation issues.

POTENTIAL OPERATING PROBLEMS

THE COMPRESSOR RUNS CONTINUOUSLY ON EITHER VOLTAGE SUPPLY, BUT NO COOLING IS OBSERVED

Troubleshooting steps for continuous compressor operation without cooling.

ABNORMALLY LOUD NOISE DURING OPERATION

Identifying causes for loud noises during refrigerator operation.

EXCESSIVE FROST BUILD-UP ON THE EVAPORATOR

Solutions for excessive frost buildup on the evaporator plate.

NO COOLING AFTER THE INITIAL INSTALLATION AND START UP

Steps for troubleshooting lack of cooling post-installation.

CHECKING A CIRCUIT BREAKER

CHECKING THE CHATTER PROTECTOR (TYPE B)

CHECKING THERMOSTAT CONTINUITY

CHECKING THE RELAY (out of the circuit)

CHECKING TRANSFORMER PRIMARY WINDINGS

CHECKING TRANSFORMER SECONDARY WINDINGS

CHECK FOR DEFECTIVE INVERTER OR OSCILLATOR

CHECKING COMPRESSOR CONTINUITY

COMPRESSOR CURRENT MEASUREMENT

COMPRESSOR VOLTAGE MEASUREMENT

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: DE-828

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: DE-704C

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: DE-728

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: DE-400C

CIRCUIT DIAGRAM OF REFRIGERATOR MODELS: DE-250F, DE-251D

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: DC-254

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: DC-230

CIRCUIT DIAGRAM OF REFRIGERATOR MODELS: MRFT-615B, MRFT-630B, MRFT-640B

CIRCUIT DIAGRAM OF REFRIGERATOR/FREEZER MODEL: MRFT-660

CIRCUIT DIAGRAM OF REFRIGERATOR MODELS: SRBD-630, TRBD-630

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: SCQT-6406

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: SCQT-6800

CIRCUIT DIAGRAM OF REFRIGERATOR MODEL: V2000

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