4 Commissioning
B 1050 en-1819 59
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4.6 External cooling system (Option: CS1-X, CS2-X)
NOTICE!
Gear unit damage
The gear unit may be damaged by overheating.
• When commissioning the cooling system, the operating instructions of the oil / air cooler (CS1) or oil / water
cooler (CS2) must be observed.
• The drive unit may only be commissioned after the cooling system has been connected and commissioned.
The system consists of at least a motor pump, a filter and a heat exchanger. In addition, a pressure
switch is usual in order to monitor the pump and therefore the cooling.
For oil / water cooling (CS1) the cooling water temperature and the flow rate must be checked and
ensured by the operator. The maximum permissible cooling water inlet temperature is defined during
the planning phase and can be found in the order data.
If there is a danger of frost the operator should add a suitable anti-freeze solution to the cooling water.
With oil/air coolers (CS2) an adequate air intake must be ensured. A free space of at least 30° must
be provided for the air intake. The air inlet grille and the fan blades must be kept clean.
Temperature regulation is provided by means of a resistance thermometer (PT100), which is installed in the oil
sump of the gear unit.
It is recommended that the cooling unit is only switched on above an oil temperature of 60 °C and switched off
below an oil temperature of 45 °C.
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