10 Maintenance
64
Combi 2
Caution
Always examine any seals or gaskets, replacing where necessary.
Where a seal or gasket is supplied with a spare part it should be
used, irrespective of the condition of the original. Use only original
spare parts that are intended for use with this type of boiler.
Warning
Ensure that the boiler is cool. Ensure that both the gas and
electrical supplies to the boiler are isolated.
Fig.70
Resetting the upcoming message
10.2.3
Resetting the upcoming maintenance message
Reset an upcoming maintenance message once the intermediate
maintenance service has been carried out.
10.3
Standard inspection and maintenance operations
10.3.1
Annual Servicing
Important
When performing any inspection or maintenance, personal
protective equipment must be used where appropriate.
1.
Ensure that both the gas and electrical supplies to the boiler are
isolated and that the boiler is cool.
2.
Remove the case front panel and hinge down the control panel.
3.
Carefully examine all seals and gaskets, replacing if necessary. Look
for any evidence of leaks or corrosion and if found determine and
rectify the cause.
4.
Complete the relevant Service Interval Record section of the Bench-
mark Commissioning Checklist at the rear of this publication and
then hand it back to the user.
10.3.2
Checking the water pressure
In order for the boiler to operate correctly, the pressure of the water in the
heating circuit, shown on the display, must be between
1.0
and
1.5
bar.
If necessary, restore the water pressure as described in the chapter
entitled "Filling the installation".
10.3.3
Checking the expansion vessel
Check the expansion vessel and replace it if necessary. Check its
pre-charge every year and restore the pressure to 1 bar if necessary.
1.
Navigate to the Counter menu.
2.
Press the
key to open the
menu.
3. Turn the
knob until the code SVC is displayed.
4. Press the
key to access the maintenance message.
5. Turn the
knob until the code 0012 is displayed.
6. Press the
key to confirm.
7. Turn the
knob until the code CLR is displayed.
8. Press the
key for around 3 seconds, to confirm and reset the
maintenance message.
The display shows DONE. The maintenance message is reset.
9. Press the
key several times to return to the main screen.
