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4.
For the service technician
4.3 Checking and servicing the thermal discharge
safeguard
(Please inform your customer)
WARNING
The function of the thermal discharge safeguard must be checked once a year by a
technician and the amount of limescale in the thermal safety device must be checked.
If there is limescale in the thermal safety device then it must always be removed.
– Press the red cap against the valve (Fig. 99) > Water must flow out into the
funnel.
– Little outflow at funnel > Limescale in thermal safety device (pump limescale re-
move – e.g. formic acid – through the thermal safety device).
– Thermal discharge safeguard dripping > Clean the seal on the piston and valve
seat. If the seal is damaged > Replace the piston.
Note:
There is no need to remove the fitting for this purpose!
Fig. 99 Thermal discharge safeguard; press-
ing the red cap against the valve