Manual

<3. Commissioning>
14
IM 12A01A02-12E 4th Edition : Sep. 3, 2013-00
4. Maintenance
n Periodic maintenance
TheFLXA21requiresverylittleperiodicmaintenance,excepttomakesurethefrontwindow
iskeptcleaninordertopermitaclearviewofthedisplayandallowproperoperationofthe
touchscreen. If the window becomes soiled, clean it using a soft damp cloth or soft tissue.
To deal with more stubborn stains, a neutral detergent may be used.
Whenyoumustopenthefrontcoverand/orglands,makesurethatthesealsarecleanand
correctlyttedwhentheunitisre-assembledinordertomaintainthehousing’sweatherproof
integrity against water and water vapor.
The pH measurement uses high impedance sensors and may otherwise be prone to problems
caused by exposure of the circuitry to condensation.
CAUTION
Never use harsh chemicals or solvents. In the event that the window does become heavily
stained or scratched, refer to the parts list for replacement part numbers.