Graf SILENTIO light 15/4 Instrucciones De Instalación Y Mantenimiento página 24

6.1 Service
The complete system must be serviced at regular intervals (approximately every 3 to 4 months). For
every service all of the threaded connections must be checked for leaks. Also the condition of the function
of the float valve for the back-up tank must be checked. If the system has been out of use for a long
period or there has been the danger of frost then the pump and controlmatic should be emptied. Any
temporary storage should only be at a dry and well ventilated location.
6.2 Care
For care and cleaning of the system it is sufficient to use a damp cloth, for more thorough cleaning a mild
detergent may also be used. Under no circumstances should a solvent or cleaning agents containing
solvents be used.
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6. Service and care
Emptying plug
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