Maintenance & service
Service and maintenance must be done on a regular schedule to keep the refrigerator operating properly, efficiently and safely. The service should only be performed by a qualified technician who is familiar with LP gas systems and refrigerators.
Replacing the heater
The heat necessary for the operation of an absorption cooling unit is supplied by an electric heater mounted in a pocket of the boiler system.
The refrigerator is equipped with two electrical heaters, one for
To replace the heater proceed as follows:
1.Unplug the refrigerator power cord from the 230-
240 volt AC outlet. Disconnect the optional 12 V DC leads.
2.Shut off gas valve.
3.Remove the terminal block cover.
4.Disconnect the heater leads.
5.With a pair of pliers unfold the lug holding the lid of the boiler casing and open the lid.
6.Remove some insulation wool so that the heater is accessible.
7.Turn and lift the heater out of its pocket.
8.Fit the new heater into the pocket.
9.Connect the leads and put on the terminal block cover.
10.Put back the insulation and close the lid of the boiler.
Periodic maintenance
Checking the connections
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
Checking the LP gas pressure
Cleaning the flue and burner
Inspect the flue baffle. It should be reasonably clean and free of soot. Heavy soot formation indicates improper functioning of the burner.
The flue and burner both require cleaning in the following manner:
1.Unplug the refrigerator power cord from the 230- 240 volt AC outlet.
2.Disconnect or shut off the 12 volt DC power to the refrigerator.
3.Turn manual shutoff valve to OFF.
4.Remove cover from the burner housing.
5.Disconnect the wire from the high voltage elec- trode.
6.Remove the burner mounting screw and remove the burner assembly.
7.Remove the wire and flue baffle from the top of flue tube.
8.Clean the flue from the top using a flue brush. Blowing compressed air into the flue will not prop- erly clean soot and scale out of the flue tube.
9.Replace the flue baffle.
10.Clean burner tube with a brush. Blow out burner with compressed air.
11.Before removing burner jet, clean burner area of soot and scale that fell out of flue tube. Remove the burner jet.
12.Soak the jet in wood alcohol and blow it out with compressed air. Reinstall and tighten burner jet.
Clear blue colour
The colour of the flame of flame shall be clear blue over the
slots of the burner.
The LP gas pressure should be checked and the main regula- tor readjusted if pressure is incorrect. The correct operating pressure is 2,7 kPa. The correct place to measure the LP gas pressure is at the test port just ahead of the burner jet.
Gas equipment assembly
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| Shown in open position |
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| Use a slotted screwdriver to change position |
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| Inlet fitting |
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! | WARNING |
Do not use a wire or pin when cleaning the burner jet as damage can occur to the precision opening. This can cause damage to the refrigerator or create a fire hazard.
pressure test port | spark electrode |
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| burner tube | |
burner jet | burner mounting screw |
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