Dometic NDA1402 manual Maintenance & Service, Refrigerator Removal, Periodic Maintenance

Models: NDA1402

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MAINTENANCE & SERVICE

6.Connect compressed air onto the inlet fitting of the water solenoid valve. See FIG. 14. Apply AC power to the solenoid valve by forcing the ice maker mold assembly through several harvest cycles. Remove the plastic cover from the mold assembly. The bail arm must be in the down (“ON”) position. Start the harvest cycle with a flat blade screw driver inserted into the center of the small gear. Turn the gear counterclockwise, when the hold switch closes, the mold assembly will continue to operate through the harvest cycle. See FIG. 15. During the water fill sequence of the harvest cycle the compressed air will blow out the water trapped in the solenoid valve. Repeat the harvest cycle operation several times.

Note: Up to 20 PSIG air pressure can be used to clear the solenoid valve. Damage to solenoid can occur if AC power is applied for more than 20 seconds.

7.Make sure that the metal tube is in the plastic water line to the ice maker. Reconnect and tighten lines on water solenoid valve. Leave the water supply turned off until temperatures are above 0°F/-18°C. See figure 14.

8.Dry out the ice maker mold assembly with a soft cloth. Place bail arm in the “UP/OFF” position.

FIG. 14

Water solenoid valve

 

Inlet fitting for

 

water supply line

Plastic nut

Metal tube 1. REFRIGERATOR REMOVAL

1/4” Water line 2. PERIODIC MAINTENANCE to ice maker

FIG. 15

MAINTENANCE & SERVICE

The user should be aware of service that must be done on a regular schedule to keep the refrigerator operating properly. The service should only be per- formed by a qualified technician who is familiar with LP gas systems and refrigerators.

1. REFRIGERATOR REMOVAL

Before working on the refrigerator, make sure the AC voltage and DC voltage leads are disconnected. Shut off the gas supply. Disconnect the gas supply line at the rear of the refrigerator see FIG. 1. Always use a back up wrench when loosening and tightening this connection. Cap the gas supply line loosen the screws anchoring the refrigerator to the enclosure and slide the refrigerator out of the compartment.

When replacing the refrigerator make sure that the sealing strips are properly positioned.

Replacement is the reverse of removal. Check all con- nections for gas leaks.

Refer to section INSTALLATION, page 5 to 9.

2. PERIODIC MAINTENANCE

To keep your Dometic refrigerator operating efficiently and safely, periodic inspection and cleaning of sev- eral components once or twice a year is recom- mended.

A.It is important to keep the area at the back of the refrigerator clean. Check the lower vent, upper vent and area between these openings for any obstruc- tions such as bird/insect nests, spider webs, etc. Clean the coils on the back of the refrigerator. Use a soft bristled brush to dust off the coils. The entire cooling unit at the back must be kept clear from all kinds of object that obstruct the air flow.

It is important to keep the refrigerator area free from combustible material, gasoline and other flammable vapors or liquids.

NOTE: The following maintenance is required once or twice a year, but should only be done by a qualified ser- viceman who is familiar with LP gas systems and refrig- erators.

B.Check all connections in the LP gas system (at the back of the refrigerator) for gas leaks. The LP gas supply must be turned on. Apply a noncorrosive bubble solution to all LP gas connections. The ap- pearance of bubbles indicates a leak and should be repaired immediately by a QUALIFIED SERVICEMAN WHO IS FAMILIAR WITH GAS SYSTEM AND RE- FRIGERATORS.

!WARNING

DO NOT use a flame to check for gas leaks.

C.The LP gas pressure should be checked and the main regulator readjusted if pressure is incorrect.

The correct operating pressure is 11 inches of water column. The correct place to take the LP gas pres- sure is at the test port just ahead of the burner jet. (See FIG. 16).

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Dometic NDA1402 manual Maintenance & Service, Refrigerator Removal, Periodic Maintenance