Preparing For Initial Start-Up; Maintenance; Cleaning And Removing Internal Components - Riello 7000 Series Installation Instructions Manual

14 Preparing for the initial start-up
It is essential to perform the following checks before
starting up or testing the functioning of the storage tank.
In particular, check that:
- The supply cocks are all open in the heating water cir-
cuit.
- The water connections to the boiler and to the valve
group of the solar heating system have been made cor-
rectly.
- The solar heating circuit has been correctly flushed out
and filled with water-glycol mix, and all air has been
bled out of the circuit

15 Maintenance

Scheduled maintenance is essential for the safety, efficiency and long working life of your solar storage tank. Proper
maintenance also reduces energy consumption and ensures reliability over time. Have your storage tank serviced either
by a Riello Technical Assistance Centre or by a qualified professional at least once a year.
Perform the following operations before beginning any
maintenance.
- Switch the electricity supply to all the devices in the sto-
rage tank's water circuit and to any associated boiler
OFF at the main switch and at the control panel.
- Close the shut-off cocks for the heating water circuit.
- Drain the storage tank, or its secondary circuit if a pri-
mary circuit is connected.

16 Cleaning and removing internal components

EXTERNAL CLEANING
Clean the outside of the storage tank's insulation with a soft cloth damped in soapy water. To remove stubborn marks,
use a cloth damped in a 50% mix of water and denatured alcohol or a suitable cleaning product. Dry the storage tank
after cleaning it.
Do not use abrasive products, petrol or triethylene.
INTERNAL CLEANING
(Riello 7000.2000/F - 3000/F - 5000/F models only)
- Use a wrench to unscrew the flange fixing bolts and remove the counter-flange complete with the seal.
- Clean inside the tank and remove any residues through the access hole.
Once cleaned, refit all components, following the above steps in the reverse order.
Tighten the flange fixing bolts, proceeding diagonally around the flange to apply pressure uniformly around the
seal.
- Fill the storage tank circuit and check that there are no leaks from any of the seals.
- Check the performance of the storage tank.
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Riello 7000