8
defrosting process. After defrosting, clean up the defrosted water with a clean 
cloth and clean the cooler containers as described in chapter 4.
Should the unit be out of operation for a prolonged period, turn off unit and 
remove contents. After defrosting, the cooler should be cleaned carefully and 
dried.
To avoid any unpleasant smells forming in the cooler, the lid should be left 
slightly open.
15. Measures after prolonged periods of disuse
Should the refrigerator not function correctly after being switched on, place the 
unit upside down WITHOUT ANY CONNECTING POWER SUPPLY. After a few 
minutes return the refrigerator to its correct position and switch on again.
Should the unit still not fuction correctly, repeat the process several times.
16. Maintenance
Changing the gas filter: the cellulose gas filter is situated at the back in the gas 
connection piece. When it becomes necessary to replace the gas filter, remove 
the filter from the duct and replace it with a new one. Any other maintenance and 
repair works, especially those relating to the cooling aggregate and the gasburner system, may only be undertaken by authorized customer service points.
17. After-sales service
Should a problem arise with the unit, please check the following before 
contacting customer service:
- is the unit suitably placed and is it well ventilated?
- is the unit placed on a flat surface?
- does the socket supply current?
- is the connecting cable damaged in any way?
- is there a loose connection?
- has the plug been properly plugged into the socket?
- has the electrothermostat been correctly adjusted?
- in the case of gas operation, has the safety pilot knob (regulator) been 
pressed down long enough?
- has the regulating knob been turned to the correct position?
- is the gas cylinder or pressure regulating valve open?
- does the liquid gas cylinder still contain gas? If no liquid movement is evident 
on shaking the cylinder, then the gas cylinder is empty.
- are several operating methods being used simultaneously?
- have warm foodstuffs been stored in the cooler?