Walchem WDS100, Инструкция по эксплуатации

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5.0 Maintenance
The sections below describes normal maintenance.
See section 4.0 Troubleshooting for assistance in determining when
maintenance may be required.
Cleaning the Electrodes
It is recommended to clean the electrodes every 4 – 12 weeks or sooner if
calibration is impossible due to unstable or low values are displayed.
Remove the sensor from the flow cell by first closing the water supply
valve, then the water discharge valve, then unscrewing the 1 ¼” fitting. If
the optional cleaning attachment is present, pull the sensor out while turning
it in a CLOCKWISE direction.
Dry the outside of the sensor with a clean paper towel. If necessary hold the
electrolyte
housing
tight to unscrew the cleaning attachment.
Use the emery paper supplied to clean the electrodes. Do NOT move the
emery paper from one electrode to the other! Then put the sensor into
operation again.
If the sensor still displays unstable or too low values, the electrolyte has to
be changed as described in Section 2. It is recommended to change the
electrolyte every 3 – 6 months.
If the electrodes are dirty and the optional cleaning attachment is being
used, it is possible that the cleaning balls need to be replaced.
Sensor Storage
The sensor may be stored for up to one month in the flow cell assuming
that the membrane is always kept submerged in water.
An unused sensor, still in the box with protective cap, may be stored up
to 1 year if the ambient temperature is above freezing.
For long term storage, up to 3 years, follow this procedure:
CAUTION: Wear gloves and safety glasses during disassembly of the
sensor since the electrolyte is a diluted acid. It is recommended to
perform this operation over a sink with running water available. Please