Decommissioning 11
0020265768_01 eloBLOCK Installation and maintenance instructions
17
10.11 Replacing the expansion vessel
B
C
A
1.
Remove the left-hand side section.
2.
Undo the screwed connection for the water connection
on the underside of the expansion vessel.
3.
Undo the retaining clips on the expansion vessel.
4.
Remove the expansion vessel from the product by
pulling it forwards.
5.
Insert a new expansion vessel from the front into the
product.
6.
Use new seals.
7.
Tighten the screwed connection for the water connec-
tion on the underside of the expansion vessel.
1
8.
Before filling the heating installation, measure the pre-
charge pressure of the expansion vessel at measuring
stub pipe
(1)
of the expansion vessel with the boiler
depressurised.
–
The pre-charge pressure must be 0.02 MPa
(0.2 bar) higher than the static height of the heating
installation.
9.
Fill and purge the heating installation.
–
The water pressure must be 0.02 MPa to 0.03 MPa
(0.2 bar to 0.3 bar) higher than the pre-charge pres-
sure of the expansion vessel.
10. Check the water connection for tightness after you have
filled the expansion vessel.
10.12 Replacing the PCB and the display
1.
Disconnect all of the connection cables from the PCB
and the display.
2.
Replace the PCB and the display.
3.
Plug all of the connection cables into their original slots.
4.
Check all of the connections using the connection dia-
gram. (
→
Page 24).
5.
Connect the product to the power mains.
6.
Switch on the product.
7.
Check the set product variant (
→
parameter
d.93
).
8.
Set the correct product variant, if necessary.
9.
Exit the diagnostics level.
10. After approximately one minute, switch the product off
and on again.
◁
The electronics are now set to the product variant
and the parameters of all diagnostic codes are set
to the default settings. If the electronics detect an in-
correct product variant when the product is switched
on, switch the product off and check the connec-
tions to the display.
11. Make the system-specific settings.
10.13 Completing inspection and maintenance
work
1.
Install all of the components in reverse order.
2.
Install the front casing. (
→
Page 8)
3.
Open all of the isolation valves.
4.
Re-establish the power supply.
5.
Start up the product.
6.
Check that the product functions correctly and check
the tightness.
7.
Log all maintenance work that is carried out.
11 Decommissioning
▶
Use the on/off button to switch off the product.
▶
Disconnect the product from the power grid.
▶
Close the stopcock on the cold water connection.
▶
Drain the product.
12 Recycling and disposal
Disposing of the packaging
▶
Dispose of the packaging correctly.
▶
Observe all relevant regulations.
