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MEASURES DURING OPERATION
Servicing
Monitoring and regular maintenance are important for ensuring that the district heating substation is kept in good working order.
Use a professional maintenance provider when your equipment needs to be serviced.
Service inspections must be performed at least twice per year, before and after the heating season.
Comprehensive preventive maintenance by a maintenance provider should be performed yearly.
Flow mediums that differ from the technical specification may not be used in the heat exchanger. By default, the medium is water
without a corrosive agent.
In matters related to warranty, contact Gebwell Oy maintenance services. The warranty terms are included in the delivery materials.
Cleaning heat exchangers
Under normal conditions, the heat exchangers do not need to be cleaned. The powerful turbulent flow creates a continuous self-
cleansing effect on the heat delivery surfaces. If the heat exchanger becomes dirty for any reason, it can be cleaned by backflushing
and, if necessary, a suitable detergent solution.
Checklist, general points to monitor
Check at least the following before and after the heating season:
Possible leaks
Secondary side pressure should be in line with plans
No extraordinary sounds during operation
Checklist, annual preventive maintenance by a maintenance provider
Clean the sanitary trap if necessary
Input and output temperatures must be in line with plans.
Control device tuning
Pressure losses in the heat exchangers
Water heat loss must be in line with the requirements of the local district heating provider.
Initial pressure of the expansion tank
Inspecting the pump’s operating point
Regulator tuning orders
Tuning for the Ouman regulator is ordered from Ouman Oy, tel. +358 424 8401.
Tuning of other regulators can be requested from Gebwell Oy, tel. +358 400 897 492 / Olli Koponen.
