Prior To Preparation For Use; Determining The Water Flow Rate; Filtration - Burkert T-CUT Manuel D'utilisation

9.2 Prior to Preparation for Use
When starting up the system for the first time, the modules should be rinsed with water for 15 minutes to flush
any residual preservation fluid out of the module. Then the water flow can be determined or transferred immedi-
ately for filtration.
Irrespective of whether the system is used for rinsing, filtering or cleaning, please proceed as described below
in "9.3 Filtration".
CAUTION!
Mildly toxic preservative fluid.
▶ Avoid contact with eyes and skin.
The water used for flushing purposes must satisfy certain purity requirements. These are product-specific
and must be inquired about.
Any concentrate and permeate generated during rinsing will be rejected. Please observe any applicable national
environmental regulations.
9.2.1 Determining the Water Flow Rate
The water flow rate is the maximum achievable permeate flow rate for a certain trans-membrane pressure value.
As no separation of substances takes place at the membrane, no covering layer will develop and the permeate
flow rate is determined solely by the hydrodynamic properties of the membrane.
The effectiveness of cleaning the membrane can be defined by measuring the water flow rate before and after
cleaning and then comparing both measurements.
The use of demineralized water, pre-filtered to 10 µm, is recommended for determining the water flow rate.
Please consult a representative of Bürkert Fluid Control Systems if you wish to use tap water.
To avoid pressure surges, we recommend operating the module for around 2 minutes at low pressure before
gradually increasing the pressure to the recommended values (refer to product-specific data sheet).
9.3

Filtration

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Ensure that the permeate can flow out at zero pressure (open permeate valve(s)!).
When using centrifugal pumps for the feed:
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Close the feed valve
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Open the concentrate outlet valve
When using displacement pumps for the feed:
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Leave the feed valve slightly open
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Open the concentrate outlet valve
With either type of pump:
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Switch on pump. Select low frequency for speed-controlled pump.
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Open feed valve deliberately slowly to avoid pressure surges when deaerating the system.
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english
Type T-CUT
PreparationforUse