Instruction/ maintenance manual of the product RM7732 Dometic
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Foreword This service manual is the result of the dedication of The Dometic Corporation and it s engineer s in giving service people the necessary instruction for making accurate analyses of certain conditions. Provided is a diagnostic chart leading a qualified mechanic into the service manual pages to locate and solve symptoms which may occur.
37 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators PAGE NO. CONTENTS RM7030/RM7732 DIAGNOSTIC FLOW CHART ........................... 1 SECTION 1 OPERATION 1.1 RM7030 (Prod. #921890201 & 921890301) Refrigerator Operation ...........
36 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL CONTENTS PAGE NO. SECTION 8 WIRING 8.1 External Wiring .................................................................. 21 8.2 Internal Wiring .......................................
1 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators This program will address the most common system problems associated with the Dometic RM7030/RM7732 refrigerators supplied by The Dometic Corporation. Our intent is to provide you with a guideline of checks to make, should you encounter one of the following symptoms.
2 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 8. Insufficient cooling on gas cools properly on AC. 9 . Freezes on all modes. 10 . Changes preset mode. 11. Flame failure light within 10 seconds. 12. Flame failure light after 3 minutes.
3 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators SYMPTOM CAUSE REFER TO STEP 18 . No AC operation operates on gas. 19 . No gas operation operates on AC 20. Insufficient cooling on all modes. 21. Insufficient cooling on AC cools properly on gas.
4 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 26. Interior light on when door is closed. 27. Rapid formation of frost. 28 . Water on frame. ICE MAKER SECTION 29. Ice Maker fails to start. 30 . Ice Maker won't make ice. 31 . Keeps making ice and won't shut off.
5 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators AES FULLY AUTOMATIC MODE Turn switch "C" to the "ON" position. The bulb above push-button "A" will light up green, indicating that the control system is in the fully automatic mode.
6 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL FLAME FAILURE DURING LP GAS OPERATION If the LP gas flame fails during the burner cycle, the high voltage spark will continue arcing for up to three minutes.
7 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators 3. Press the TEMPERATURE SELECTOR button (3) until the lamp at the desired position is illuminated. 4. When operating in the AES mode, the AES mode indicator lamp "B" will illuminate.
8 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL GAS MODE Move the AUTO mode selector button (2) to the UP position. The GAS mode indicator lamp (C) will illumi- nate. After 45 seconds the burner should be ignited and operating normally.
9 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators SECTION 2 AC VOLTAGE REQUIREMENTS The refrigerator is a 120 volt AC, 60 Hz appliance. The proper operating range is 100 to 132 volts . Check the AC volts at the receptacle where the refrigerator is attached.
10 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 5.2 THERMISTOR RM7030 (Prod. No. 921890401) and RM7732 To determine if the temperature sensor is functioning properly, perform the following test. Remove the cover from the lower circuit board.
11 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators Next, hook up a manometer at the test port. Then check for DC volts at gas valve terminals while the unit is in trial-for-ignition. If DC volts are present and pressure is low, replace the valve.
12 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 5.7 FUSES A. RM7030 (Product No. 921890201 & 921890301) The fuse is to protect the circuit board. To check the fuse, remove it from the holder and do a continuity check. If no continuity, replace it with a proper 3-amp time delay fuse.
13 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators B. AES FUNCTION SWITCH NOTE : The following checks should be made on the upper circuit board and harness assembly BEFORE replacing the upper circuit board or wiring harness.
14 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL With the mode switch (?) NOT depressed : A reading would NOT be indicated. NOTE : If the check on AC mode lamp and switch is not correct, verify the wire harness has continuity. If wire harness is good, replace the upper circuit board.
15 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC MODE NOTE : The PAL tester will allow for proper testing of the integrity of the upper and lower circuit boards. PAL is available from your Dometic parts distributor. This control system has an integral Diagnostic/ Test sequence.
16 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL C. GAS OPERATION THESE PROCEDURES MUST BE FOLLOWED IN SEQUENCE AND AT THE PROPER TERMINALS OR DAMAGE TO THE BOARD WILL RESULT. Before you check the circuit board for gas operation, verify these components are good: Igniter (Sec 5.
17 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators Check for voltage at the heating element connection terminals J7 and J8 on the circuit board. If no voltage is present, check the 5 amp AC and 3 amp DC fuses. If fuse is defective, replace the fuse.
18 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 5.11 ELECTRODE First, do a visual check for cracks or breaks on the ceramic insulator. Verify the mounting bracket is attached properly to the elec- trode. If either of the above is found, replace the electrode.
19 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators SECTION 7 LP GAS COMPONENTS 7.1 MANUAL GAS Shutoff VALVE The manual gas shutoff valve is where the incoming LP gas supply is attached. To check the shutoff valve, remove and inspect for any obstructions.
20 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 7.2 ORIFICE 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.
21 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators 7. 4 BURNER The burner is a slotted metal tube located below the flue tube on the cooling unit. It should be level, and the slots in the burner should be directly below the flue tube. The burner should be cleaned periodically, at least once a year.
22 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL TYPICAL WIRING DIAGRAM FOR RM7030 ( PRODUCT NO. 921890201 & 921890301).
23 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators TYPICAL WIRING DIAGRAM FOR RM7030 (PRODUCT NO. 921890401) 6 1 1 C S B L BLA CK BROW N RED ORANGE G REEN A5 B5 C5 D5 E5 B2 A2 WH I T E.
24 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL RM7732 TYPICAL WIRING DIAGRAM.
25 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators SECTION 9 OTHER 9.1 LEVELING In an absorption refrigerator system, ammonia is liquefied in the finned condenser coil at the top of the refrigerator.
26 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL RM7732: SECURING THE REFRIGERATOR: After the refrigerator is mounted in place (ensuring a combustion seal at the front frame), the refrigerator is to be secured in the enclosure with six screws.
27 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators 9.4 DOOR POSITION The door position can be checked by observing any misalignment of the door in relation to the frame. NOTE : Improper position of the refrigerator door can cause the interior light to stay on when the door is closed.
28 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL 9.9 INTERIOR LINER SEAL TO FRAME There is a seal that is applied to the liner in the area where the metal frame makes contact with the interior liner. If this seal is incomplete, cold air can migrate out to the metal frame.
29 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators SECTION 10 ICE MAKER OPERATION The refrigerator must be allowed to precool properly before starting the ice maker. The refrigerator has to be connected to 120 volts AC before the ice maker can operate.
30 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.
31 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators 11.8 ICE MAKER ASSEMBLY It may be necessary to replace the entire ice maker assembly. Disconnect power to the appliance. Disconnect the leads inside the ice maker unit. Check each wire for continuity to make sure the wiring is good before replacing the ice maker unit.
32 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL.
33 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators.
34 DOMETIC® RM7030/RM7732 Refrigerators DIAGNOSTIC SERVICE MANUAL SECTION 12 ICE MAKER OTHER 12.1 WATER FILL ADJUSTMENT The correct water level in the mold is important for the proper production of ice. The size of the ice cubes depends on the amount of water which enters the mold.
35 DIAGNOSTIC SERVICE MANUAL DOMETIC® RM7030/RM7732 Refrigerators 12.2 WIRING Refer to the wiring diagram supplied with the unit you are working on, and make sure all wiring connections are correct and tight. THIS IS AN ENERGIZED CIRCUIT. ELECTRICAL SHOCK CAN OCCUR.
An important point after buying a device Dometic RM7732 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Dometic RM7732 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Dometic RM7732 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Dometic RM7732 you will learn all the available features of the product, as well as information on its operation. The information that you get Dometic RM7732 will certainly help you make a decision on the purchase.
If you already are a holder of Dometic RM7732, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Dometic RM7732.
However, one of the most important roles played by the user manual is to help in solving problems with Dometic RM7732. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Dometic RM7732 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
