4. Commissioning
-20- B1000 www.nord.com
4.3 Operation with lubricant cooling
Water cooling
Caution!
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 similar thermal capacity as 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 water hardness must be between 1° dH and 15° dH, and the pH value must be
between pH 7.4 and pH 9.5. No aggressive liquids should be added to the coolant!
The coolant pressure must not exceed 8 bar. The required quantity of coolant is 10
litres/minute, and the coolant inlet temperature should not exceed 40°C; we recommend
10°C.
We also recommend fitting a pressure reducer at the coolant inlet to avoid any 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 water and the cooling water flow rate must be supervised
and ensured by the operator.
Air/Oil cooler
This version and all important data concerning the air/oil cooler can be obtained from Catalogue
G1000, or contact the manufacturer of the cooling unit.
4.4 Running-in time for the worm gear unit
Note!
In order to achieve maximum efficiency of the worm gear unit, the gear unit must be subjected
to a running-in period of approx. 25 h – 48 h under maximum load.
There may be a reduction in efficiency before the running-in period is complete.
4.5 Checklist
Checklist
Object of the check Checked on:
Information –
see Section
Is the vent plug activated or the pressure vent screwed in? Sec. 3.3
Does the required configuration conform with the actual installation? Sec. 6.1
Are the external gear shaft forces within permitted limits (chain tension)? Sec. 3.5
Is the torque support correctly fitted? Sec. 3.6
Are contact guards fitted to rotating components? Sec. 3.8
Is the automatic lubricant dispenser activated? Sec. 4.2
Is the cooling cover connected to the cooling circuit? Sec. 3.14/4.3
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