86 GV 640 Service Manual
For internal use only
1 Free flow section
2 Heat exchanger sealing washer
3 Water drainage system on the rinsing cavity
4 Feed from the softening equipment
5 Water discharge to the softening equipment
6 Water intake
7 Feed from the discharge pump
8 Water drainage (to the syphon)
9 Flow sensor
10 Expansion opening
11 Discharge hose ventilation valve
8.7.2 Emptying the heat exchanger
Start up any programme and close the water tap in order to empty the heat exchanger. The heat
exchanger is emptied.
Then reset to pump off the rest of the water.
8.7.3 Replacing the heat exchanger
This is only possible if the left side panel is removed and the heat exchanger is emptied.
1. Remove the plastic screw fittings on the ven-
tilation opening with a special tool.
2. Remove the splash guard cover from the
water intake connections in the interior.
3. Remove the water intake connections with a
special tool.
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