Maintenance

7.Inspect the flue of refrigerator’s cooling system. This area must be free of foreign materials. Foreign materials observed in the flue indicate the burner requires cleaning.

8.Insure the area directly behind the refrigerator is not being used for storage. Keep the refrigerator area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.

9.Periodically inspect the ventilation system. The air passage from the bottom intake vent to refrigerator coils and from the refrigerator coils through the upper exhaust vent must be unobstructed.

10.Inspect combustion seals (visual check without removing the refrigerator). Combustion seals are

attached to the back surfaces of the refrigerator’s mounting flanges and must be continuous between the wall and the mounting flanges.

11. Periodically inspect door seals.

Refrigerator Storage

When the refrigerator will not be in use for an extended (seasonal) period of time, it is recommended that all power to the refrigerator be disconnected. Unplug the refrigerator’s AC power cord from the wall receptacle and disconnect the 12 volt DC supply wires from the refrigerator’s power board located at the rear of the refrigerator. Clean the refrigerator interior and latch the doors in the storage position. After the extended shut-down period, the burner, burner orifice, and flue must be inspected before igniting the burner flame. These areas must be free from dust, spider webs, or other obstructions which might restrict the combustion system.

Refrigerator Removal and Replacement

To remove the refrigerator, disconnect both AC and DC power sources from the refrigerator. Turn off the propane gas at the main supply tank. Turn the refrigerator’s manual shut-off valve. Disconnect the gas supply piping at the manual shut-off valve. Remove the mounting screws securing the refrigerator to the enclosure. Remove refrigerator from the enclosure.

Before reinstalling the refrigerator, inspect the areas behind the mounting flanges for damaged or missing seal strips. These seal strips serve as a combustion seal which isolates the living space of the vehicle from refrigerator’s combustion system. Reinstall the refrigerator by reversing the above procedures. After reinstalling the refrigerator, check the gas fitting connections for leaks. Do not check for leaks with an open flame. Use an approved leak-detection solution.

Burner Flame Inspection

The efficiency of your refrigerator while operating in the gas mode is dependent upon the correct burner flame. The burner flame provides energy to the refrigerator’s cooling system.

The burner flame efficiency is a function of correct input gas supply pressure, air input, and burner and burner orifice cleanliness.

Ignition/Sense

Flue Tube

Electrode

 

Pale Blue

Outer Cone

Sharp Blue

Inner Cone

A visual check of the burner flame should be made

regularly. The flame should be sharp blue with a stable

Burner

Figure 11

 

burning appearance (Figure 11). If there is a constant

 

 

yellow component observed or if the flame appears erratic or unstable, switch the refrigerator to electric or turn the refrigerator "OFF" and contact a qualified installer, service agency, or gas supplier.

Procedure for Cleaning the Cooling System Flue

WARNING Carbon Monoxide can be hazardous to your health. Gas appliances may emit excessive Carbon Monoxide if the refrigerator’s burner, burner orifice, and the flue tube are not regularly cleaned. To prevent Carbon Monoxide, the burner, burner orifice, and the cooling system’s flue tube must be cleaned at least once a year and after all prolonged (seasonal) shut-down periods. Refer to the following cleaning procedures, or contact a qualified installer, your dealer or a Norcold service center.

12