ATI
Q46H/65 Residual Chlorine Dioxide System
Part 10
– Troubleshooting
61
O&M Manual
Rev-J (11/18)
NOTE:
Every ATI Q25P Sensor includes a spare bottle of Reference Buffer Solution, 7.0 pH. This
is NOT typical pH 7 bu
ffer, it is a special “high-capacity” buffer developed to ensure the
highest possible stability of the reference portion of the pH measurement. No
substitutions should be made.
Figure 28 - Replacing Saltbridge and Reference Buffer
9.7
Flow Cell Maintenance
The maintenance on the flow cell is simple cleaning. The flow cell is clear to
make examination of the condition of the sensor easier without interfering with
operations. The flow cell may be cleaned by wiping or by washing with
detergents or dilute acids. Do not try to clean with solvents as the acrylic may
craze or crack.
Change the o-ring in the flow cell yearly or if any damage is observed. If
insertion of the sensor into the flow cell becomes difficult, use silicon grease to
lubricate the o-rings that hold the sensor in place. Use only enough grease to
provide surface lubrication. Excess grease could foul the sensor membrane.
