Igema EWLS, Installation And Operating Instruction

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Caution
10. System maintenance
It is assumed that the person charged with the maintenance tasks is fully conversant with
measurement and control systems. Untrained persons must not carry out maintenance work!
If there is no adequately qualified person available, IGEMA GmbH can be brought in to service
your measurement and control system.
When replacing components, it must be ensured that only original IGEMA GmbH parts
are used.
Any warranty is void if components from other manufacturers are used.
Preventive Maintenance
The following points should be observed to maximize gauge life:
Proper cleaning and maintenance of level gauges in steam service is vital for enhanced
performance and service life.
The user must determine upon evaluation of his or her own operating experience an
appropriate maintenance schedule necessary for the specific application. Note that the
frequency and method of maintenance may affect service life and performance of level gauges.
Realistic maintenance schedules can only be determined with full knowledge of the services
and application situation involved.
The probes must be cleaned annually. Depending on the quality of the boiler water, a shorter
cleaning cycle may be required.
Always depressurise the boiler / add-on housing and allow it to cool down
before dismantling the probes! Mind the danger of scalding through steam
or hot water.The add-on housing must be completely emptied.
Electrodes are wearing parts that must be replaced after prolonged use.
10.1 Depressurising the water column
- Close the valves to the boiler
- Slowly open drain valve and drain off water
- Fully open drain valve
- Wait for the device to cool down
- Remove protective housing
Danger