Dometic RM7030, RM7732 service manual Orifice, Thermocouple

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DOMETIC® RM7030/RM7732 Refrigerators

DIAGNOSTIC SERVICE MANUAL

7.2ORIFICE

The orifice is a small brass fitting that has a ruby membrane that is laserbeam drilled and is mounted on the gas line just prior to the burner. The orifice is cleaned by using an alcohol based solvent and allowing to air dry.

NEVER USE A DRILL BIT OR JET TIP CLEANER TO CLEAN ANY ORIFICE AS THESE DEVICES WILL DAMAGE THE FACTORY MACHINED PART AND CREATE A POTENTIALLY DANGEROUS CONDI- TION.

If there is lack of cooling on gas operation, verify the orifice is the proper size (#73).

7.3THERMOCOUPLE

A.RM7030 (Product No. 921890201 & 921890301) The thermocouple is a component extending above the burner assembly so the tip is in the path of the flame. It will produce 14 to 30 millivolts DC in normal operation. To check the thermocouple, use a known good safety

valve and attach to the thermocouple. Next, supply flame to tip of the thermocouple for a few moments while depressing the safety valve. Remove the flame and release the safety valve.

The valve should hold for at least 30 seconds. If it does not hold the safety valve open for 30 seconds, replace the thermocouple. If it does hold for 30 seconds or more, the thermocouple is good – do not replace it. NOTE: Be sure the tip on the thermocouple is clean.

B. RM7030 (Product No. 921890401) & RM7732

The thermocouple is a component extending above the burner assembly so the tip is in the path of the flame. During normal gas operation, the thermocouple should produce 25 to 35 millivolts when connected to the lower circuit board. Any reading below 18 millivolts could cause erratic gas operation. NOTE: A reading of 18 or less could be caused by low gas pressure or improper thermocouple location.

RM7030 (Product No. 921890201 & 921890301)

THERMOCOUPLE

ELECTRODE

BURNER TUBE

ORIFICE

PRESSURE TEST

PORT

 

RM7030 (Product No. 921890401) and RM7732

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Contents Foreword Contents ICE Maker Components WiringOther ICE MakerRM7030 Refrigerator Section Symptom Cause Refer to Step Refrigerator SectionC,D Symptom Cause Refer to StepSymptom Cause Refer to Step ICE Maker Section LP GAS Operation AES Fully Automatic ModeLP GAS Delay Mode OperationThermostat AES Display Panel AES Mode Volts AC OperationFlame Failure During LP GAS Operation LOW Voltage MonitorRM7732 Refrigerator Operation GAS ModeStandby Mode of Operation Auto ModeTo Shut OFF the Refrigerator Description of Operating ModesDC Components AC Voltage RequirementsAccomponents Heating Element DC Voltage RequirementsSolenoid Valve Thermistor AdjusterThermistor High Voltage Cable IgniterUpper Circuit Board ON-OFF SwitchFuses AES Function Lamp AES Function SwitchAC Mode Lamp and Switch GAS Function LampGAS Flame Warning Lamp Delay Mode Lamp and SwitchGAS Mode Lamp and Switch Lower Circuit Board Diagnostic ModeRM7030 Product No & RM7732 Door Switch Test Port LP GAS RequirementsElectrode Climate Control HeaterManual GAS LP GAS ComponentsThermocouple OrificeFlue Baffle WiringInternal Wiring BurnerTypical Wiring Diagram for Volts AC RM7732 Typical Wiring Diagram Other Securing the Refrigerator Cooling Unit Ambient TemperatureDoor Position Smooth FIT, Proper SealInterior Liner Seal to Frame ICE Ejector ICE Maker OperationICE Maker Components Mold HeaterWater Valve Mold SwitchesShutoff ARM Timing MotorICE Maker Assembly Schematics on Pages 32 ThroughDometic RM7030/RM7732 Refrigerators Dometic RM7030/RM7732 Refrigerators ICE Maker Other Water Fill AdjustmentWater Supply ICE Maker Typical Wiring Diagram

RM7030, RM7732 specifications

The Dometic RM7732 and RM7030 are two innovative refrigeration solutions designed for those who enjoy outdoor adventures such as camping, RVing, and boating. These refrigerators are engineered to provide reliable cooling performance while prioritizing energy efficiency and ease of use.

The Dometic RM7732 is a three-way refrigerator that operates on 12V DC, 110V AC, and propane. Its versatility makes it an ideal choice for those who may not always have access to an electric power source. With a capacity of 7.3 cubic feet, it can hold a substantial amount of food and beverages, making it perfect for extended trips. The RM7732 also boasts an impressive temperature range, allowing it to maintain optimal cooling conditions even in varying outdoor temperatures. Its sleek design includes a reversible door, providing flexibility in installation and use.

On the other hand, the Dometic RM7030 is a double-door refrigerator that combines style with functionality. This model also supports three-way operation: propane, 12V DC, and 110V AC. It offers a slightly smaller capacity than the RM7732 but is still equipped to handle the needs of a small family or group. One of its standout features is its efficient absorption cooling technology, which ensures that the refrigerator operates quietly, making it an excellent choice for nighttime use.

Both models feature an electronic ignition system that simplifies the process of starting the propane function. The intuitive control panel on each unit allows users to easily select the preferred power source and adjust the temperature settings. Energy-efficient LED lighting inside the refrigerators enhances visibility while consuming minimal power.

Dometic has incorporated advanced insulation materials in both the RM7732 and RM7030 to reduce energy consumption, ensuring that food stays cooled even under high ambient temperatures. The sturdy construction is designed to withstand the rigors of outdoor use, and the units are built to last.

In summary, the Dometic RM7732 and RM7030 refrigerators are excellent choices for outdoor enthusiasts seeking reliable, versatile, and energy-efficient cooling solutions. With their range of power options, impressive capacities, and user-friendly features, they are well-equipped to handle the demands of any adventure while keeping your provisions fresh and cool.
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