Dometic RM7030, RM7732 service manual Shutoff ARM, Timing Motor, Mold Switches, Water Valve

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DOMETIC® RM7030/RM7732 Refrigerators

DIAGNOSTIC SERVICE MANUAL

11.4 SHUTOFF ARM

The shutoff arm is cam driven. It operates a switch to control the quantity of ice produced. During the ejection cycle the arm is raised and lowered during each of the two revolutions of the timing cam. If the shutoff arm comes to rest on top of the ice in the storage bin during either revolution, the switch will remain open and stop the ice maker at the end of that revolution. The arm has a manual shutoff built into the linkage; by raising the arm as high as possible, it will lock in that position until forced down.

If the arm and switch do not operate properly, check for damage and repair or replace parts as necessary.

11.6 TIMING MOTOR

This is a low-wattage, stall-type motor which is geared to the timing cam and ice ejector. It is a one RPM motor.

To check the motor, disconnect power to the appliance and test for continuity between the two leads. If you DO NOT have continuity, replace the motor. If you have continuity and the motor runs, DO NOT replace.

 

ARM UP

ARM DOWN

STOPS

OPERATION

ICE MAKER

 

WILLOPERATE

 

11.5 MOLD SWITCHES

These three switches are single-pole, double-throw style. They are identical and interchangeable.

The holding switch assures completion of a revolution once a cycle has started.

The water valve switch opens the water valve during the fill stage of the cycle. NOTE: This is the only adjust- able component of the ice maker. If you use a double- throw switch, DO NOT use the N.O. terminal.

The shutoff switch stops the ice maker's operation when the storage bin is full.

Shutoff

SWITCH

LEVER

11.7 WATER VALVE

This valve is solenoid operated. When it is open, it releases water from the source to the mold. The amount of water is proportional to the length of time the water valve switch is held closed by its timing cam.

Disconnect power to the appliance, remove the wires to the water valve solenoid coil, and check for continuity between the two terminals. If you have continuity, the solenoid is good. It takes 10-15 watts to energize the solenoid coil. The mold heater and coil are in series. When the mold heater is activated, this causes the voltage to drop to about 105 VAC at the coil.

The valve has a flow washer inside which acts as a pressure regulator. A strainer is installed to prevent dirt, rust, etc. from entering the valve. Check for any debris which might obstruct the flow of water, or prevent the valve from closing completely when the circuit is not energized. Remove any obstructions. If the valve still fails to operate properly, replace it.

ARM

FRONT VIEW

MOTOR

MOUNTING

PLATE

TIMING CAM

WATER VALVE

VALVE BODY

FLOW

SOLENOID COIL

WATER

VALVE

SWITCH

HOLDING SWITCH

STRAINER WASHER

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Contents Foreword Contents Other WiringICE Maker ICE Maker ComponentsRM7030 Refrigerator Section Symptom Cause Refer to Step Refrigerator SectionC,D Symptom Cause Refer to StepSymptom Cause Refer to Step ICE Maker Section LP GAS Delay Mode AES Fully Automatic ModeOperation LP GAS OperationFlame Failure During LP GAS Operation AES Display Panel AES Mode Volts AC OperationLOW Voltage Monitor ThermostatStandby Mode of Operation GAS ModeAuto Mode RM7732 Refrigerator OperationTo Shut OFF the Refrigerator Description of Operating ModesAccomponents Heating Element AC Voltage RequirementsDC Voltage Requirements DC ComponentsThermistor Adjuster ThermistorSolenoid Valve High Voltage Cable IgniterON-OFF Switch FusesUpper Circuit Board AC Mode Lamp and Switch AES Function SwitchGAS Function Lamp AES Function LampDelay Mode Lamp and Switch GAS Mode Lamp and SwitchGAS Flame Warning Lamp Lower Circuit Board Diagnostic ModeRM7030 Product No & RM7732 Door Switch Electrode LP GAS RequirementsClimate Control Heater Test PortManual GAS LP GAS ComponentsThermocouple OrificeInternal Wiring WiringBurner Flue BaffleTypical Wiring Diagram for Volts AC RM7732 Typical Wiring Diagram Other Securing the Refrigerator Door Position Ambient TemperatureSmooth FIT, Proper Seal Cooling UnitInterior Liner Seal to Frame ICE Maker Components ICE Maker OperationMold Heater ICE EjectorShutoff ARM Mold SwitchesTiming Motor Water ValveICE 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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