Endress+Hauser Memosens COS51E, Operating Instructions Manual

Page: 31 / 48

Memosens COS51E Maintenance
Hauser 31
Clean the sensor:
• Before every calibration
• At regular intervals during operation as necessary
• Before returning it for repair
Type of contamination Cleaning
Salt deposits 1. Immerse the sensor in drinking water.
2. Then rinse it with copious amounts of water.
Dirt particles on the sensor shaft and shaft
sleeve (
not membrane! )
‣
Clean sensor shaft and sleeve with water and a suitable
sponge.
Dirt particles on the membrane or membrane
body
‣
Clean the membrane carefully with water and a soft cloth
‣
After cleaning:
Rinse with copious amounts of clean water.
Use a fully automated cleaning system for regular automated cleaning.
9.2.2 Cleaning the cathode
The cathode only needs to be cleaned if it is coated or silver-plated.
L
CAUTION
The standard electrolyte is a strong irritant
Danger of severe skin and eye irritation!
‣
Be absolutely certain to observe the corresponding workplace safety regulations.
‣
Wear protective gloves and goggles when handling the electrolyte.
‣
In case of eye contact: Remove contact lenses, rinse eyes with water for a few minutes
and contact a doctor.
‣
In case of skin contact: Take off wet clothing immediately, wash the skin or take a
shower.
Also pay attention to the safety datasheet of the electrolyte on
www.endress.com/downloads .
1. Disassemble the sensor →  35.