4
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If the central unit is to be installed in a cupboard, pay particular attention to instructions relating
to the size and arrangement of ventilation holes.
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In addition to storerooms and other utility facilities, the C series central units can also be installed
within the actual living quarters, such as in the utility room, a den or a cleaning cupboard. Furthermore,
C 30 Premium and C 40 Premium can also be located in damp or even wet areas, such as the
washroom, thanks to their high drip-proof casing class (splash-proof IPX4). C 30 Premium, C 40
Premium = double insulated, protection class II. C 40 Premium LCD = earthed, protection class I.
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The central unit is connected to a 230V power socket protected with a slow fuse of at least 10 A
or an automatic fuse of at least 16 A.
Never store or handle flammable or corrosive materials in the room where the
central unit is located.
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The exhaust pipe of the central unit is always led outside. We recommend that a muffler (accessory)
be fitted onto the exhaust pipe. The muffler should be positioned as close to the end of the exhaust
pipe as possible for maximum power. Mufflers must not be installed on the suction side.
2 MAINTENANCE
2.1 EMPTYING THE DUST CANISTER
The dust canister’s volume is approximately 13 litres. The intervals for emptying the dust canister can be
established with experience. The guideline is that in domestic use the dust canister should be emptied
every three months or so. The canister must be emptied before the level of dust reaches the bottom of
the quick release clips. This helps to prevent dust seeping over the edges of the canister in connection
with emptying it.
Undo the quick release clips (1) of the dust canister. The dust canister (2) is now suspended inside the
central unit. Take hold of the clips and pull the dust canister outwards to empty it. Carefully clean the
sealing (3) and then refit the dust canister into place.
It is recommended that the dust canister be washed with a mild detergent once a year. Make a note of
any maintenance you perform in the Maintenance Log on page 11 to help keep track of maintenance
intervals.