Potterton SIRIUS THREE FS 130 Installation, User And Service Manual page 128

11 Maintenance
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Fig.182
Fig.183
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128
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MW-4000302-1
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3. Lift the two side panels on the low-loss header kit.
4. Pull the two side panels on the low-loss header kit to remove them.
5. Remove the lower insulating shell.
6. Remove the magnetic ring.
7. Place a container with sufficient capacity underneath the low-loss
header vent valve.
8. Open the vent valve, using the plug.
9. Allow the flow to continue until no more dirt is present.
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