Hach Lange astroTOC Basic User Manual page 38

Clean the gas liquid separator (GLS)
Electrocution hazard. Turn off all pumps and lamps before servicing the GLS. Disconnect power to the
relays before opening the analyzer top enclosure door.
Personal injury hazard. If the analyzer has not been flushed with deionized water for 20 minutes, some
acid and persulfate is still in the inlet tubes and the peristaltic tubes. Use caution when removing the
tubes as the acid and persulfate may spray out.
1. Turn off main power to the analyzer.
2. Disconnect the four finger-tight connectors and slide the GLS down to remove the GLS from the
analyzer (Figure 20).
3. Invert the GLS to remove accumulated sediment. Flush with deionized water from a squeeze
bottle if necessary. Remove algae accumulations with a cotton swab and deionized water.
Figure 20 Clean the gas liquid separator (GLS)
Fuse replacement
Electrocution hazard. Remove all power from the instrument and relay connections before this
maintenance task is started.
Potential Instrument Damage. Delicate internal electronic components can be damaged by static
electricity, resulting in degraded performance or eventual failure.
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