Scheduled Maintenance; Replace The Membrane Cap, Electrolyte And Electrode - Hach AMTAX sc User Manual

6.4 Scheduled maintenance

Description
Reagent pump for sc analyzer (Valve pumps)
Pump head piston pump 10 mL
(Pre-greased cylinder and piston)
Switchable Compressor 115/230V
Solenoid stirring bar
Electrode

6.5 Replace the membrane cap, electrolyte and electrode

Figure 20 Determine the electrolyte volume in the electrode body with a measuring tape
Table 7 lists items, except the electrode, that need to be maintained
by service personnel ONLY. Contact the manufacturer for more
information.
Table 7 Repair maintenance items
When to replace
2 years recommended
Check continuously after 1 year.
Electrode is OK, when slope
with new membrane cap and
electrolyte is in the range of
–57 to –67 mV after 24 h of
membrane cap replacement.
Important Note: Never lubricate the membrane cap or the
electrode with grease, silicone oil or Vaseline. This will cause
damage to the Teflon membrane which will cause poor
performance.
Note: The service life of the Teflon membrane will be reduced by tensides
or organic solvents in the waste water.
For optimal performace, replace the the membrane cap, electrolyte
and electrode regularly (refer to
While operating the instrument, the amount of electrolyte should be
between 4 mL and 11 mL. With less amount of electrolyte, the
accuracy will be reduced for low measured values in the related
measuring range. To determine how much electrolyte remains in
the electrode body, refer to
1 year
1 year
1 year
Table 6, page
Figure 20.
Maintenance
Warranty
1 year
1 year
2 years
1 year
1 year
48).
49