Hach-Lange ORBISPHERE A1100 Family - Manual (Page 32)

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Maintenance and Troubleshooting
5.1.3 Membrane replacement and sensor head cleaning
A sensor recharge kit is required as it contains all the required components necessary for this
membrane replacement and sensor head cleaning process (see details in
Sensor recharge kit
on page 14 ).
CAUTION
Avoid all eye and skin contact with the electrolyte in the sensor and replacement
cartridge as it is corrosive and can cause burning. If eyes or skin come into contact with
electrolyte, rinse immediately with water. In addition, the electrolyte can permanently
stain clothing so exercise care in handling. It is highly recommended to wear protective
gloves and glasses during this process.
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. 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. If you are using a protection cap
with a grille, then remove the Dacron
® mesh
from inside the cap and discard it.