The solar panel must be regularly inspected/maintained.
This ensures that the system functions correctly for the
whole service life. Routine maintenance is a condition of
any warranty claims.
NOTE
The system must be shut off during maintenance
work. If the sun is shining, all work on the solar
panel system’s components must be carried out
with the solar panels covered, otherwise there
is a risk of damage to the equipment or personal
injury.
The following maintenance items must be carried out
regularly:
Solar panels
Annual check of mountings. Look for signs of corrosion
in the mounting frame and the threaded connections. In
addition, the insulation of the connections and the roof
lead-ins must be checked. Check also for damage from
birds. The solar panels may need cleaning if the roof pitch
is low or if there are lots of trees nearby.
Freeze prot
Under normal operating conditions the frost protection
and medium’s freezing point should be checked every
24 months. In extra ordinary operating conditions it
should be checked every 12 months. (Including over-di-
mensioned systems or too low set value for max tank
temp or other reason that has created abnormal large
numbers of boiling/stagnation incidents.)
The freezing point must be at least -25 °C so that the
solar panel does not freeze during winter. Check the
system pressure on the pressure gauge. If the liquid needs
to be filled the correct ratio of water and glycol must be
observed.
Control
Check that the values from the temperature sensors cor-
respond to the actual temperatures in the automatic
controller annually. Check that the pump’s speed setting
is according to the recommended flow range. (Remember
that if the pump is in speed controlled mode the flow
may be momentarily lower.)
- Checking the safety valve’s function
- Check if the solar pump station’s air trap needs to be
bled. If necessary carefully release until fluid runs out.
- Check that all electrical connections and cables are ok
- Enter information in the maintenance log
Regular maintenance of the system is a condition of any
warranty claims.
If the system is maintained by a specialist he or she will
acknowledge maintenance of the system with a signature.
In this case the following table only need be used for any
warranty claims.
If a filled solar heating system is not used over a longer
period of time and no significant energy is withdrawn
from the heat store, the solar panels must be covered to
prevent recurring stagnation / boiling.
SOLAR FP215 P/PL
Chapter 5 |
Maintenance
64
5 Maintenance
