Disassembly And Assembly - Hach ORBISPHERE 31 Série Manuel D'utilisation Simplifié

Section 6 Maintenance

6.1 Disassembly and assembly

6.1.1 Taking the sensor apart (membrane removal)
1.
1. It is important to install the electrochemical sensor standing on its base. This base offers good
protection for the delicate connector socket, at the same time providing a suitable work stand.
2. Remove the plastic storage cap. Unscrew the protection cap, using the tool provided in the
maintenance kit.
3. Pay attention to the components inside the protection cap. Note the assembly order of each item.
4. Pull up the attaching ring with the tool provided in the maintenance kit. Remove the membrane
and mask (if applicable). Drain the electrolyte into a sink and rinse the sensor cavity with tap
water.
Avoid eye or skin contact with electrolyte which can be slightly corrosive.
5.
5. Insert the prongs of the membrane support removal tool into the membrane support holes.
6. Unscrew the membrane support.
7. Note: The membrane support is individually machined and paired with the sensor. For correct sensor
operation, it is ESSENTIAL to keep a membrane support with its respective sensor. Should the membrane
support require replacement, contact your Hach Lange representative.
6.1.2 Sensor assembly (membrane installation)
Before starting the sensor reassembly, proceed to the sensor maintenance section for anode and
cathode cleaning instructions.
2.
C A U T I O N
6.
3.
7.
4.
English 11