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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.
Technical changes may be made without notice
System maintenance and warranty - page 31
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