HDS 2000 Super26GB 6. Care and maintenance6.2 Visual Inspection••••• Checking the connector cableThe connector cable must not be damaged(risk of electricution). A damaged connectorcable must be replaced immediately by anauthorized Customer Service/qualified elec-trician.••••• Check the high-pressure hoseThe high-pressure hose must not be damaged(risk of bursting). A damaged high-pressurehose must be replaced immediately.6.3 Cleaning the fuel Tank••••• Remove the tank from the appliance (firstunscrew the handle, appliance hood and coverfrom the switch box).••••• Dispose of the remaining fuel.••••• Rinse out the tank thoroughly. If you rinse outthe tank with water, allow it to dry completely.••••• Replace the fuel filter.6.4 Pump leaks••••• 3 drops per minute are permissible. Youshould contact customer service if the leakageis more rapid.6.5 Changing the oil••••• If the oil is milky (water in the oil), contactcustomer service immediately.••••• Unscrew the oil drain plug and dispose of theold oil via an authorized collecting point(protection of the environment).••••• When the oil has completely drained, screwthe oil drain plug back in and slowly pour in oilup to the “MAX” position on the oil tank (airbubbles must escape).••••• See technical data, chapter 3 for quantity andtype of oil.6.6 Cleaning the Strainer Upstream ofthe Low-water Safety Device••••• Unscrew the high-pressure hose from thepump head at the safety block.••••• Rotate an M8 screw into the strainer hole anduse it to pull the strainer out.6.7 Protection from frost••••• Frost will damage the appliance if it is notdrained completely of water. In winter theappliance should be kept in a room which isabove freezing point. Otherwise, it isrecommended to drain the appliance or rinseit thoroughly with anti-freeze.••••• Draining the appliance– Unscrew the water intake hose and high-pressure hose from the appliance.– Unscrew the supply line from the base ofthe boiler and allow the heating element todrain.– Allow the appliance to run for a max. of1 minute until the pump and the lines havedrained.••••• Anti-freezeDuring extended down-time periods, it isrecommended to pump an anti-freeze throughthe appliance. This also protects the applianceto a certain degree from corrosion.••••• Observe the following if the unit is connectedto a flue:Danger of damage caused by cold air enteringthrough the flue. Disconnect unit from flue atoutside temperatures below 0°C.