Process Fluid Requirements - Thermo Scientific ThermoFlex Manual De Instrucciones

Section 3
Process Fluid
Requirements
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
3-12 ThermoFlex
Use of any fluid not listed below will void the manufacturer's warranty.
Standard Temp Chillers
Filtered/Single Distilled water
0 - 75% Laboratory Grade
Ethylene Glycol/Water
0 - 75% Laboratory Grade
Propylene Glycol/Water
Deionized water
(1 - 3 MΩ- cm, compensated)*
*For applications requiring resistivity
greater than 1 MΩ- cm please
call and speak to an applications
engineer for additional information.
Ethylene glycol (EG) is poisonous and flammable. Before using any fluid
or performing maintenance where contact with the fluid is likely refer to
the manufacturer's SDS for handling precautions.
EG is also hygroscopic, it absorbs water from its environment. This can
affect the freezing point and boiling point of the fluid over time and may
result in system failure.
To prevent freezing/glazing of the plate exchanger, all ThermoFlex7500
and 10000s require the use of 50/50 EG/water or 50/50 PG/water below
10°C process temperature.
When using a process fluid mixture of ethylene glycol and water or
propylene glycol and water, check the fluid concentration and pH on
a regular basis. Changes in concentration and pH can impact system
performance.
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When using EG/water or PG/water, top-off with plain water. After top-off
check the fluid concentration.
Do not use a Deionization (DI) filter cartridge with Inhibited EG
or Inhibited PG. A DI filter will remove inhibitors from the solution
rendering the fluid ineffective against corrosion protection. Also,
inhibitors increase fluid conductivity.
High Temp Chillers
Filtered water*
0 - 50% Laboratory Grade
Ethylene Glycol/Water*
0 - 50% Laboratory Grade
Propylene Glycol/Water*
*to 88°C for chillers with P1/P2
pumps, to 90°C for chillers with
other pumps (when fluid properly
maintained)
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Thermo Scientific
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