Hach CL17sc User Manual page 19

7.1 Maintenance schedule
Table 6 shows the recommended schedule of maintenance tasks. Facility requirements and
operating conditions may increase the frequency of some tasks.
Task
Clean the cell on page 19
Replace the reagent bottles
Replace the stir bar and tubing harness
Clean the screen in the Y-strainer
7.2 Clean the cell
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Clean the cell at 1-month intervals or more frequently if necessary.
Items to collect:
Cotton swabs
1. Put on the personal protective equipment identified in the safety data sheets (MSDS/SDS).
2. Push menu, then select SENSOR SETUP > [select analyzer] > TASKS > CLEAN CELL.
3. Push enter to stop measurements.
4. Select an option.
Option
HOLD
TRANSFER
5. When the status light flashes, do the illustrated steps that follow. Make sure that there is no
unwanted material in the cell. When done, push enter.
2
Clean the cell more or less frequently as necessary.
3
Refer to the instructions supplied with the Tubing Kit.
4
Refer to Replacement parts and accessories
Table 6 Maintenance schedule
on page 20
3
on page 21
C A U T I O N
4
Description
The controller outputs are held at the last measured value.
The controller outputs change to the transfer value.
1 month 6 months
2
X
X
Sulfuric Acid Solution
on page 25.
As necessary
X
X
4
English 19