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200SE-2S - 300SE-2S
6.7
Inspection and maintenance of the solar circuit
26/04/2016 - 7607575-05
6.7.1.
Maintenance operations to be performed
WARNING
Use only the same fluid as for refilling. Do not mix different
fluids.
1. Check the level of the heat transporting fluid. Top up the solar fluid
if necessary.
2. Check the antifreeze protection.
3. Check the pressures of the installation and the expansion vessel.
4. As the heat transporting fluid leaks much more readily than water,
carry out a visual check on the tightness of all fittings and gaskets.
5. Check operation of the installation.
6.7.2.
Adding heat transporting fluid
CAUTION
Addition of heat transporting fluid after the safety valve has been
switched on
When the safety valve is switched on, a certain quantity of heat
transporting fluid overflows into the glycol collection vat. Top up the
solar circuit again by pumping the fluid from the glycol collection vat.
¼See chapter: "Filling the primary solar circuit", page 38.
4 The filling pressure must be more than 0.5 bar (0.05 MPa) above
the expansion vessel pre-load pressure.
CAUTION
Check the installation of the collector sensor.
4
Do not use a manual filling pump.
4
CAUTION
As the heat transporting fluid leaks much more easily than
water, carry out a visual check on the tightness of all
fittings and gaskets after a few hours' operation at normal
operating pressure.
6. Checking and maintenance
59
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