Maintenance Schedule; Remove The Safety Panel - Hach CODmax III User Manual

8.1 Maintenance schedule

Table 6 shows the recommended schedule of maintenance tasks. Facility requirements and
operating conditions may increase the frequency of some tasks.
Task
Schedule automatic cleanings
on page 33
Manually clean the digestion cuvette
on page 34
Manually clean the dosing cuvette
on page 37
Clean the instrument
Dry the leak detector
Replace the solutions
Examine for dump and piston pump waste
liquid on page 40
Replace the pharmed tubing
Replace the pharmed tubing
Replace all of the tubing
Replace the digestion cuvette o-rings
on page 43
Replace the digestion cuvette²
Replace the dosing cuvette o-rings
on page 45
Replace piston²
Replace the piston pump

8.2 Remove the safety panel

Remove the safety panel to do maintenance tasks in the analysis section (tubes, pumps, valves,
digestion unit and/or cuvettes). Make sure to install the safety panel when the maintenance task is
complete. A lock mechanism stops the analyzer when the safety panel is removed.
Do the steps that follow to remove the safety panel.
1. Push the circular START/STOP button to stop the analyzer operation. Select YES to confirm. The
analyzer starts a sequence of procedures to prepare the system for maintenance. Wait for all of
the procedures to stop.
2. Remove the safety panel. Refer to
1
For one calibration every 3 days and one cleaning cycle every 24 hours.
2
Contact technical support.
32 English
Table 6 Maintenance schedule
on page 39
on page 39
on page 39
on page 42
on page 42
2
on page 47
Figure
4 weeks 6 months 1 year 2 years As necessary
X
X
X
1
X
X
X
X
15.
X
X
X
X
X
X
X
X
X
X
X
X
X