Hach PHOSPHAX sc Addendum page 14

Maintenance
1 Overflow vessel
2 Fitting of sample tube
3 Blind plug
6.4 Shut the analyzer down
6.4.1 Shut the analyzer down for an extended period
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Figure 1Modification of PHOSPHAX sc
4
5
No special measures are necessary for taking out of operation for a
short period (up to a few days in frost-free ambient conditions).
Note: If the power supply to the controller is interrupted, frost
damage may occur. Ensure that the instrument and tubing cannot
freeze.
1. Interrupt the measurement and switch the instrument to the
service state.
2. Isolate the analysis instrument from the controller.
Note: Always wear safety equipment when handling chemicals.
Use the following procedure if the instrument is to be taken out of
operation for an extended period, or in the case of risk of frost.
1. Immerse the tubing for reagent and cleaning solutions in
distilled water.
Valve block
Sample tube
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