Heat Exchanger (16Kw); Replacing The Heat Exchanger - Kärcher HDS 9/50 De Tr1 Service Manual

11.8 Heat exchanger (16kW)

11.8.1 Replacing the heat exchanger

108
English 5.906-736.0 Rev. 00 (07/15)
View with opened maintenance flap on the left
1 Thermostat switch water temperature in the float con-
tainer
2 Screw
 Unscrew the maintenance flap on the left.
 Upon changing the temperature sensor: disconnect it at
the thermostat switch.
 Upon replacement with thermostat switch:
Open screws, remove the holder and unscrew the ther-
mostat switch from the holder.
Disconnect the cable connection.
NOTE
Observe the cable run with the electrical connection!
1 Supply from the water distribution
2 Supply to the high-pressure pump
3 Support
4 Connection coolant hose
5 Drain screw coolant
6 Connection from the expansion tank motor coolant
 Lift the trailer, disassembly of both PVC protective
plates at the bottom.
 Open the drain screw coolant and drain the coolant into
a container.
NOTE
When draining the coolant, observe the necessary envi-
ronmental regulations, dispose of coolant properly!
 Disconnect all hose connections from the heat ex-
changer.
 Uninstall the high-pressure line from the safety block to
the booster heater.
 Unscrew the holder of the heat exchanger from the bot-
tom plate.
 Unthread the heat exchanger on the side (towards the
booster heater).