Endress+Hauser Liquiline System CA80TN, Operating Instructions Manual

Page: 131 / 162

Liquiline System CA80TN Maintenance
Hauser 131
12 Maintenance
Effects on process and process control
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Take all the necessary precautions in time to ensure the operational safety and
reliability of the entire measuring point.
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WARNING
Process pressure and temperature, contamination, electrical voltage
Risk of serious or fatal injury
‣
Avoid hazards posed by pressure, temperature and contamination.
‣
Make sure the device is de-energized before you open it.
‣
Power can be supplied to switching contacts from separate circuits. De-energize these
circuits before working on the terminals.
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CAUTION
Maintenance activities in automatic mode
Risk of injury from chemicals or contaminated media
‣
Before releasing the hoses, ensure that no action is running or about to start.
‣
Set the device to the manual mode.
‣
Wear protective clothing, goggles and gloves or take other suitable measures to protect
yourself.
NOTICE
Electrostatic discharge (ESD)
Risk of damaging the electronic components
‣
Take personal protective measures to avoid ESD, such as discharging beforehand at PE
or permanent grounding with a wrist strap.
‣
For your own safety, use only genuine spare parts. With genuine parts, the function,
accuracy and reliability are also ensured after maintenance work.
NOTICE
Failure to observe the maintenance intervals
Possibility of material damage
‣
Observe the recommended maintenance intervals.
12.1 Maintenance schedule
Interval Maintenance work
3 months • Replace reagent CY80TN (typically; with a measuring interval of 1 h)
• Replace standard solution CY80TN (typically; with a calibration interval of 96 h)
6 months • Clean filter mats
• Replace hose of peristaltic pump
• Replace sample hose (if necessary)
• Replace PharMed hoses of pinch valves
12 months • Replace pump head
• Replace filter mats
24 months Replace O-rings of pressure reactor (Hauser Service)
If required • Clean the housing
• Check the fan of the cooling module for dirt and vacuum clean if necessary
• Clean dilution vessel
• Rinse the system
• Replace plug-in connectors of hoses
• Tighten connectors finger-tight
• Replace PTFE hoses
• Depending on measuring interval and dilution factor:
Visual inspection of the level of the waste vessel