System maintenance and warranty - page 31
Technical changes may be made without notice
System maintenance
and warranty
System maintenance
The solar heat transfer fluid must be checked once every year to
investigate its antifreeze and pH value. These checks can be made using
a refractometer.
• Antifreeze concentration of 40 - 45%. If the reading is below 30% then
the fluid will need to be replaced.
• pH Value of 8.5 - 9.5.
• Refractive index: I.374
The collector/collectors should be visually inspected once a year for any
sign of leakage, damage or any sign of corrosion. Checks should also be
made on the mounting brackets/bolts for any corrosion or damage.
Warranty
The collectors are guaranteed for 10 years and have a life expectancy of 25
years. The warranty will be invalid in the following cases:
• Collectors that are installed damaged or damaged during installation
• Failure of the collector due to frost, lightning strikes, transient voltages
or any act of misuse or any act of vandalism.
• The guarantee does not cover the effects of scale in the system.
• Modifications or tampering will invalidate the warranty.
• The collectors must be installed in an appropriate location and there
use is restricted to potable water only and back up heating.
• Any installation that has taken place and has not followed the
installation and commissioning procedures.
