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TECHNICAL ASSISTANCE SERVICE
17 MAINTENANCE
Scheduled maintenance is essential for the safety, efficiency and
long working life of your storage cylinder. Proper maintenance
also reduces energy consumption and ensures reliability
over time. Have your storage cylinder serviced either by the
manufacturer's Technical Assistance Service or by a qualified
heating engineer at least once a year.
Perform the following operations before beginning any
maintenance:
− Switch the electricity supply to the storage cylinder's
valve group and to any associated boiler OFF at the main
switch and at the control panel
− Close the shut-off cocks for the domestic hot water circuit
− Drain the storage cylinder's DHW (secondary) water
circuit.
18 CLEANING AND REMOVING INTERNAL COMPONENTS
EXTERNAL CLEANING
Clean the outside of the storage cylinder 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 cylinder after cleaning it.
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Do not use abrasive products, petrol or triethylene.
INTERNAL CLEANING
MODELS 7200 V Plus 200 to 550
Removing and checking the magnesium anode
− Remove the plug (1) and insulation (2), and use a suitable
wrench to unscrew the anode holder (3)
− Check the magnesium anode for wear and replace it if
necessary.
On completion of cleaning, follow the above steps in the reverse
order to refit all removed parts.
NOTE: Tighten the anode plug to a torque of 25-30 Nm.
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Cleaning inside the storage cylinder
− Remove the screws (4)
− Remove the flange cover (5)
− Remove the insulation (6)
− Unscrew the bolts (7) and remove the cover (8)
− Remove the seal (9)
− Clean inside the storage cylinder and remove any residues
through the access hole.
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Check the seal for wear and replace it if necessary.
On completion of cleaning, follow the above steps in the reverse
order to refit all removed parts.
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Tighten the bolts (7), proceeding diagonally around the
flange to apply pressure uniformly around the seal.
− Fill the storage cylinder's DHW (secondary circuit) and
check that there are no leaks from any of the seals
− Check the performance of the storage cylinder.
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TECHNICAL ASSISTANCE SERVICE
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