Manual
21
7 Inspection and Maintenance
The operational reliability of the solar system may be
impaired, resulting in damge to property or personal injury, if
the inspections and maintenance work are not carried out.
The main maintenance work on the solar system and the
corresponding maintenance intervals are specied in table
7.1.
Maintenance Maintenance interval
Solar circuit
Check the frost protection of the solar uid (use the Glow-worm 0020054984 solar uid tester) Annually
Check the system pressure Annually
Check the pH value of the solar uid (with litmus paper, pH > 7.5) Annually
Check the solar pump function Annually
Bleed the system Annually
Check the circulating volume in the solar circuit Annually
Check the hot water thermostat mixer function Annually
Rell with solar uid if necessary Annually
Check the quantity of blow-off liquid Annually
Release the return ow preventer Annually
Check the charge pressure of the expansion vessel Annually
Collector
Visual inspection of the collector, collector fastenings and connections Annually
Check whether the brackets and collector components are clean and tted properly Annually
Check the pipe insulation for damage Annually
Solar control
Check the pump function (on/off, automatic) Annually
Check the sensor temperature display Annually
Reheating
Check the circulation pump Annually
Check the timer/time programme settings Annually
Reheating: does it deliver the desired deactivation temperature? Annually
Solar cylinder
Bleed the heat exchanger if necessary Annually
Check the connections for leaks Annually
Check the temperature and pressure relief valve Annually
Checking the expansion relief valve Annually
Table 7.1 Maintenance checklist