Hach ORBISPHERE GA2X00 O2 EC Manuel D'utilisation De Base page 10

1. Hold the main body of the sensor and unscrew the protection cap locking washer by turning
counter-clockwise. Remove it from the sensor and put to one side.
2. Pull/twist off the protection cap and put to one side.
3. Hold the sensor with the membrane facing down to avoid spilling any electrolyte, then carefully
unscrew the shipment cartridge. Drain the old electrolyte into a sink and flush away. Discard the
shipment cartridge and membrane. Remove the cotton washer and silicone disc from the top of
the anode and discard.
4. Rinse the sensor head under a tap for 15 seconds, aiming the jet of water directly onto the sensor
head. Do not dry the center electrode area, as the gap between cathode and guard should be left
filled with water.
5. Take a silicone disc from the recharge kit, hold it between thumb and forefinger and position it on
top of the anode. Take a new cotton washer from the recharge kit. Hold it between thumb and
forefinger and position it on top of the silicone disc.
Note: During this step, it is very important to ensure your finger does not come into contact with the cathode
(golden surface) as it could leave greasy deposits on the surface.
6. Place the recharge cartridge container on a flat work surface and, keeping the container upright
to avoid spilling any of the electrolyte inside, carefully unscrew the top. Remove the packing
component from the center of the cartridge, making sure that the O-ring on top of the cartridge
remains in place. If it comes away then replace it before continuing. If there are any visible
bubbles in the electrolyte, remove them using a stirring motion with the packing component.
Note: The recharge cartridge container will be colored black for all applications except for the 6110 TPA where
it will be colored white.
10 English