GE Xcellerex XDM Series, Operating Instructions Manual

Page: 288 / 322

10.7.3 TCU coolant specifications
TCU water quality specifications
Tap water can be used to prepare the coolant, when the coolant temperature (mixer
jacket temperature) is designated to be between 6°C and 65°C (the temperature of the
disposable bag contents is between 10°C and 60°C ). The water quality must be within
the guidelines shown below. Deionized water is not suitable.
Contact the TCU manufacturer for additional information.
Specification Parameter
None Suspended solids
50 to 600 µS/cm Conductivity
< 80 °dH Hardness
7.8 pH
None CO
2
aggressive
< 0.3 mg/L Iron
< 0.05 mg/L Manganese
< 250 mg/L Sulfate
< 250 mg/L Chloride
< 40 mg/L COD
< 1000 CFU/mL Bacteria
TCU coolant composition
The use of corrosion inhibitor in the coolant is optional. If the vessel jacket temperature
is expected to be below +6°C, antifreeze needs to be added to TCU coolant.
The table below shows an example coolant composition (containing corrosion inhibitor)
that allows the vessel jacket temperature to decrease to -15°C without freezing.
Component Amount (%)
OptiShield
®
Plus 10
propylene glycol 50
water 40
288 Xcellerex XDM 50-1000, XDUO 100-1000 mixers Operating Instructions 29251615 AD
10 Reference information
10.7 Temperature control unit
10.7.3 TCU coolant specifications