nord B 1050, Operating And Assembly Instructions Manual

Page: 57 / 112

4 Commissioning
B 1050 en-4419 57
4.5 Internal cooling system (Option: CC)
NOTICE!
Gear unit damage due to overheating
• The drive may only be commissioned after the cooling spiral has been connected to the cooling
circuit, and the cooling circuit has been put into operation.
The coolant must have a thermal capacity similar to water (specific thermal capacity at 20 °C
c=4.18 kJ/kgK). Industrial water without any air bubbles or sediments is recommended as a coolant.
The hardness of the water must be between 1°dH and 15°dH; the pH value must be between pH°7.4
and pH°9.5. No aggressive liquids may be added to the coolant!
The
coolant pressure
must not exceed
8 bar
. The required
coolant flow rate
is
10 l / min.
The
maximum permissible coolant inlet temperature must not exceed 20 °C.
We also recommend fitting a pressure reducer at the coolant inlet to avoid damage due to excessive
pressure.
If there is a danger of frost, the operator should add a suitable anti-freeze solution to the cooling water.
The temperature of the cooling fluid and the cooling fluid flow rate must be monitored and ensured by
the operator.
Information
With a thermostat in the cooling water inlet, the volume of cooling water can be adjusted to the actual
requirements.