5.3 Maintenance work by the operator
❒ Regular cleaning of the boiler extends its life and is a basic requirement for
smooth running.
❒
Recommendation: use an ash vacuum for cleaning.
5.3.1 Weekly inspection
Checking the system pressure
❒ Check the system pressure on the pressure gauge
➥ The value must be 20% above the pre-stressed pressure of the expansion tank
NOTICE! Check that the position of the pressure gauge and rated pressure of
the expansion tank match your installer's specifications!
If the system pressure decreases:
❒ Top up with water
NOTICE! If this happens frequently, the seal of the heating system is faulty! Inform
your installer
If large pressure fluctuations are observed:
❒ Ask an expert to inspect the expansion tank
Check the thermal discharge valve (from T4e 130)
❒ Check the seal of the discharge valve
➥ The discharge pipe must not drip
NOTICE! Exception: Boiler temperature > 100 °C
If water is dripping from the discharge pipe:
❒ Clean the discharge safety device in accordance with the manufacturer's
instructions or have it checked/replaced by the installer if necessary
Checking the safety valve
❒ Check the seal of the safety valve regularly and ensure that the valve is not dirty
NOTICE! Inspection work must be carried out in accordance with the
manufacturer’s instructions.
Servicing the system
5
Maintenance work by the operator
Operating Instructions T4e | B1560520_en 53
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