Do A Leakage Test - Hach PHOSPHAX sc LR User Manual

Figure 19 Replace piston

5.9 Do a leakage test

Do not start the measuring mode until the leakage test is complete or damage to the instrument
can occur.
After the pump head replacement for the air pump, do a leakage test.
1. Push Menu, then select SENSOR SETUP > PHOSPHAX sc LR.
2. Select DIAG/TEST > MAINTENANCE > SELECT PROCESS > LEAK TIGHT AIR-P
and push Enter.
The analyzer starts an automatic leakage test and counts the remaining time in
seconds down to zero.
If the air pump is free of leakage, the analyzer stays in service mode and waits for the
next input.
If the air pump is not free of leakage "ERROR" shows on the display. The analyzer
remains in service mode and waits for the next input.
1. Repair the leakage. Refer to
piston.
2. Do steps 1 and 2 again to check if the system has leakage.
N O T I C E
Figure 19 on page 49. Check correct placement of the
Maintenance
49