Checking gaskets and thermal insulation components
1.
Check gaskets and the packing
cord in the boiler door for damage.
2.
Check the thermal insulation com-
ponents of the boiler door for possi-
ble damage.
3.
Replace all faulty parts.
Checking all heating water connections and the sensor well
for leaks
Danger
There is a risk of injury when
working on pressurised compo-
nents.
Only open the connections on
the heating water side after the
boiler has been de-pres-
surised.
Only drain the boiler with a
vacuum pump when the boiler
air vent valve is open.
1.
Remove cap
A
from the back of
the boiler.
2.
Check sensor well
B
for leaks.
3.
Fit cap
A
.
Checking the function of the safety equipment
Check the safety valves, the water
level and pressure limiters in accor-
dance with manufacturer's details.
Further details regarding the individual steps
(cont.)
11
Commissioning, inspection, maintenance
56
92
405
GB
Summary of Contents for VITOCROSSAL 300
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