32
Installation instruction
for flat collectors on flat roof or foundation.
8. Maintenance and Service
During maintenance work and other work, the collector must be in a stable position to
exclude the danger of tipping or falling.
- It is forbidden to carry out repairs and maintenance work under a raised or not protected
against self-falling collector.
- Repair and maintenance work should be carried out by the means of suitable tools and
protective gloves and shoes.
- Before g the maintenance work it is necessary to wait till the temperature of a collector
lowers to such an extent that a burn hazard of fingers or hands is excluded,
- Solar system servicing should be carried out according to warranty indications of
particular installation elements.
In order to guarantee failure-free operation of the whole system it is recommended to carry
out the following maintenance works at least once a year:
- Frost protection – check the solar fluid resistance to frost by the means of a control device
(refractometer). In case of a significant decrease of resistance of fluid against freezing it is
necessary to replace it and vent the whole system once again.
- System pressure – working pressure in the solar system needs to be monitored. After the
start-up period no pressure drop is allowed.
- Expansion vessel – input pressure of an expansion vessel should be monitored. In order to
do so, disconnect the vessel from the system and measure the pressure. The input pressure
should be 2,5 bar. It is also necessary to check the control and safety system and the
supporting or fixing structure of the collectors.
In order to guarantee the proper operation of the whole system in every case, it is
recommended to sign a contract for maintenance services with specialized installation
companies.
Copyright laws: Energetyka Solarna ensol Sp. z o.o.
Copying, replication and use of this work or its elements without authors’ permission is strictly prohibited.
Energetyka Solarna ensol Sp. z o.o.
47-400 Racibórz, ul. Piaskowa 11
Tel. +48 32 415 96 65
www.ensol.pl
