8KS
8KBS
5 Set-up and connection
32
Version 08/2012, Rev. 1.6 of 04/02/2014 • sb
Translation of the original operating manual
Pos: 113 /10 0 Sigm a/11 0 BA Z entrif uge n (Pr ojekt e)/8KS_ 8KBS/050 Auf stellu ng u nd Ansc hluss/ 050 -00 60 So nde raus statt ung: Wasse rkühl ung @ 7\ mod _13 074 331 590 96_ 68.d ocx @ 442 83 @ 2 @ 1
5.5
Special equipment: water cooling system
Centrifuges with water cooling are equipped with a special refrigeration unit
with a refrigerant (CFC-free), modified electronic system, and a special
software version. The housing of the GMP version is completely closed. All
of the other units have vent slots for the motor and electronic power
system.
Operating conditions
• The centrifuge must only be operated with media-neutral water of
drinking water quality (hardness <8) or with another suitable refrigerant.
We recommend using a filter (to be provided by the customer).
• The operating pressure of the water must be between 1.5 and 5 bar.
We recommend using a pressure reducer (to be provided by the
customer).
• The maximum flow rate depends on the operating conditions (e.g.
speed and rotor temperature). The minimum cooling water consumption
at maximum power is approximately 5 l/min. At a standstill, the water
supply is stopped by a solenoid valve. In the case of the GMP version
(ref. no. 10857), the valve is opened in two steps:
1. reduced flow, only for the internal air cooler
2. unlimited flow, when the compressors are running.
• The maximum temperature at the water inlet is 20°C. The lower the
water temperature, the more efficient the cooling.
• The centrifuge is equipped with a ¾-inch water connector .
1
Connector for the
cooling water inlet
2
Connector for the
cooling water outlet
Fig. 11:
Connections for the water cooling system
Pos: 114 /01 0 Univ ersal mod ule/ Ab schnitt swechs el @ 0 \mo d_1 202 124 514 062_ 0.d ocx @ 418 @ @ 1
Pos: 115 /01 0 Univ ersal mod ule/ Sei tenwe chsel @ 0\ mod _12 021 1624 431 2_0 .docx @ 1 05 @ @ 1
