nord 6052902/0213, Manual With Installation Instructions

Page: 65 / 128

4 Commissioning
B 1050 en-3921 65
4.7 Cooling coil (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.
If there is a danger of frost, a suitable anti-freeze solution must be added to the cooling water in due
time.
The coolant must have a thermal capacity similar to water.
• Specific thermal capacity of water at 20 °C: c = 4.18 kJ/kgK
Clean, 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 . We also recommend fitting a pressure reducer at the
coolant inlet to avoid damage due to excessive pressure.
The required quantity of coolant depends on the size of the cooling coil. Depending on the housing
connection, the following flow rates apply:
• Cable cross section G3/8“: 5 l/min
• Cable cross section G1/2“: 10 l/min.
The coolant inlet temperature must not exceed 20 °C. The coolant inlet temperature may only be
higher in individual cases according to the order documentation. In case of other coolant inlet
temperatures, observe the special documentation provided by Getriebebau NORD or contact
Getriebebau NORD.
The temperature and the flow rate of the cooling fluid must be monitored and ensured. The drive must
be shut down if the permissible temperature is exceeded.
Information
With a thermostat in the cooling water inlet, the volume of cooling water can be adjusted to the actual
requirements.