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7. Cleaning, maintenance and recalibration
7.2 Cleaning of the diaphragm
To clean the diaphragm, the diaphragm seal system must be dismounted.
See chapter 8.1 "Dismounting".
With contaminated, viscous or crystallising media, it may be necessary to clean the
EN
diaphragm from time to time. Only ever remove deposits from the diaphragm with a soft
brush and suitable solvent.
7.3 Cleaning in place (CIP) cleaning process
When cleaning from outside ("wash down"), observe the permissible temperature and
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ingress protection.
Only use cleaning agents which are suitable for the seals used.
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Cleaning agents must not be abrasive nor corrosively attack the materials of the
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wetted parts.
Avoid thermal shocks or fast temperature changes. The temperature difference
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between the cleaning agent and rinsing with clear water should be as low as possible.
Negative example: Cleaning with 80 °C [176 °F] and rinsing at +4 °C [+39 °F] with cold
water.
7.4 Maintenance
Checks should be carried out on a regular basis to ensure the measurement accuracy of
the pressure gauge. The checks or recalibrations must be carried out by qualified skilled
personnel with the appropriate equipment.
Apart from that, the instrument is maintenance-free.
WARNING!
Repairs must only be carried out by the manufacturer or appropriately qualified
skilled personnel.
7.5 Recalibration
Calibration certificate - official certificates:
We recommend that the instrument is regularly calibrated by the manufacturer, with time
intervals of approx. 12 months.
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WIKA operating instructions, model DSSA11SA
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