Bosch Rexroth MSK030B-0900-NN Project Planning Manual page 232

230/279 Bosch Rexroth AG
Operating conditions and application notes
Potential equalization of the cooling system
Manufacturers of cooling units
Coolants
Connect all components within the cooling system (e.g. motor, heat exchang‐
er, pipe system, pump, pressure compensation container) with a potential
equalization. The potential equalization must be carried out with a copper rail
or copper strand with a corresponding conductor cross-section.
Cooling water pipes must never touch live parts. Ensure an insulation dis‐
tance > 13 mm! All lines must be firmly fixed mechanically and checked for
leaks at regular intervals.
The following table shows several manufacturers of cooling units. The list is
not exhaustive and represents only a small number of cooling unit manufac‐
turers. Of course, products of other manufacturers can be used.
However, the machine manufacturer is responsible for the suita‐
bility test for the cooling media used and the design of the liquid
cooling system.
Bosch Rexroth does not claim any warranty for third-party prod‐
ucts.
Rittal GmbH & Co KG
KKT Kraus Kälte- und Klimatechnik GmbH
Glen Dimplex Deutschland GmbH
BKW Kälte-Wärme-Versorgungstechnik GmbH
Hyfra Industriekühlanlagen GmbH
Tab. 9-10: Manufacturers of cooling units
The performance of the cooling system must be rated by the machine or
coolant system manufacturer such that all requirements regarding flow, pres‐
sure, cleanliness, temperature gradient, etc. are maintained in every ope‐
rating state.
The cooling medium must be provided by the customer. Water must be used
as cooling medium. Water which is to be used as cooling water must comply
with certain criteria and treated accordingly if necessary (see
ty of the cooling water). Coolant additives must be admixed into the coolant
for corrosion protection and chemical stabilization. The selected coolant addi‐
tives must comply with the materials in the cooling system (e.g. copper,
brass, stainless steel, etc.) and may not contain any environmentally hazard‐
ous substances.
A cooling with floating water from the supply network is not recommended.
Normal water can be heavily calcified and cause sediments or corrosion with‐
in the cooling system. For any alues regarding composition of floating water,
please refer to your local water supplier. Your manufacturer for coolant addi‐
tives is on hand for further notes about necessary quality of the coolant water
or additional water.
Should other coolant mediums than water be used, a perform‐
ance reduction of the motor can be necessary to dissipate the
created power loss within the cooling medium. In this case,
please contact your Bosch Rexroth sales partner.
DOK-MOTOR*-MSK********-PR12-EN-P
Synchronous Servomotors MSK
http://www.rittal.com
http://www.kkt-chillers.com
http://www.riedel-cooling.com
http://www.bkw-kuema.de
http://www.hyfra.de
Fig. 9-11, Quali‐