Fig. 9: Maximum and minimum fill level
Check the supply of coolant regularly. The coolant level must be within the maximum and
minimum fill levels. The minimum fill level is defined by the coolant feed inside the tank.
Only use clean, lime-free water when topping up.
Pay attention to contaminations in the coolant. If it is too dirty, the coolant must be replaced
(→ Chapter "Replacing the Coolant").
Check the cooling system regularly for leaks.
Error message E46
Flowmeter
− The following error sources can lead to an E46 error message:
▪ No or too little coolant in the cooling system
▪ Flowmeter sensor faulty
▪ Pump faulty
▪ Blockage in the cooling system
• Check whether sufficient coolant is in the coolant tank.
5.2 Connection to an External Cooler
If the internal cooling is not sufficient for the application, an additional external cooling can be
connected to the two connections (R) and (P). The internal cooling is then supported via a heat
exchanger by the external cooling.
Maximum coolant
volume ~ 600 ml
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