6
GF 263X Series Chlorine Electrodes
Maintenance
Verifying the sensor's accuracy using the DPD method should be performed to determine if the sensor requires maintenance.
1.
Inspect the membrane for dirt or damage. Replace the membrane if it's torn or if the gold cathode is visible.
2.
If the membrane is dirty clean the membrane by soaking it in 1 - 5% HCL and gently wash with a stream of DI water.
(do not use any mechanical device on the membrane)
Re
fi
ll Procedure:
When adding electrolyte, be prepared for an accidental spill.
Working near a sink is recommended.
1.
Remove the membrane cap from the front of the sensor.
2
. Turn the sensor upside down and shake the sensor vigorously to remove
the internal electrolyte.
3
. Fill supplied syringe with electrolyte solution.
4.
Place the electrode on a level surface.
5.
Insert syringe needle fully into one of the eight electrode holes while
injecting with electrolyte solution. Slowly injecting the electrolyte solution
into the sensor to avoid introducing air bubbles. The electrode holds
approximately 14 milliliters of solution. Slowly
fi
ll until solution begins to
fl
ow out of holes. Do not allow the solution to run down the electrode and
wet the electrical contacts in the DryLoc connector.
6
. Slowly screw on the membrane cap
fi
nger tight. Do not use tools.
To avoid damage and contamination, do not touch the white membrane
surface on the membrane cap.
Avoid skin or eye contact with electrolyte solution.
Wear rubber gloves and goggles.
*Safety Data Sheets (SDS) are available online at www.gfsignet.com.
Additional caution should be taken when handling the Chlorine Dioxide electrolyte solution.
If a fresh water rinse does not clean the membrane, it will need to be replaced.
Keep spare membrane caps available. Membrane caps carry no warranty.
Diluted HCl can irritate the eyes and skin, use proper safety equipment.
Do not use surface tension reducing chemicals, detergents or solvents on the membrane.
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