Hach C1100 Basic User Manual page 6

Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Note: It is advisable to perform this procedure with the plastic sensor base installed so as to avoid any damage to
the connection socket and also to provide a suitable stand for the sensor when required.
1.
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. Remove the Dacron
cap and discard it.
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. If present, remove the cotton washer 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.
5. 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
6 English
C A U T I O N
2.
6.
3.
®
mesh from inside the
7.
4.
8.