Burkert Flowave 8098, Руководство по эксплуатации

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Maintenance and troubleshooting
Type 8098 FLOWave L
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Rinse the measurement tube with water of the best quality available in the factory (ideally, water for
injection or purified water) under the same conditions as the first rinse.
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If needed, let a second cleaning agent circulate through the measurement tube, under the same condi-
tions as the first cleaning agent, to neutralize any alkaline residues that remain.
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Do a final rinse of the measurement tube, under the same conditions as the first two rinses. Monitor the
conductivity value of the final rinse to make sure all the cleaning agents have been removed.
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Blow air through the measurement tube to remove moisture and to ensure maintenance of a good
passive layer.
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If needed, do a de-scaling by letting a solution made of water, nitric acid HNO
3
[15 %...20 %] and
hydrofluoric acid HF [2 %...5 %] at a temperature between 20 °C and 60 °C circulate through the meas -
urement tube for 5...30 minutes.
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After a de-scaling, or to prevent any corrosion effects after 1 or more (depending on the application)
CIP-procedures, do a passivation by letting a solution made of water and nitric acid HNO
3
[3 %...5 %] at
a temperature between 70 °C and 80 °C circulate through the measurement tube for the same duration
as the CIP-procedure. Then, rinse the measurement tube with water with the best quality available in the
factory (ideally, water for injection or purified water) under the same conditions as the other rinses.
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Blow air through the measurement tube to remove moisture and to ensure creation of a uniform passive
layer.
24.5 Sterilisation In Place (SIP) of the device
The measurement tube of the device can be sterilised in place in all the applications the device is used in.
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Do the sterilisation in place procedure using dry saturated steam at a temperature between 121 °C and
140 °C for max. 1 hour.
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