Miele S 648 Panduan Petunjuk Pengoperasian - Halaman 25

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When to change the dustbag

Change the dustbag when the colour

marker in the dustbag change indicator

fills the display.

When first switched on it is normal for

the indicator to show half-full. This does

not mean the bag is half-full.

The dustbags are disposable and in-

tended to be used only once. Do not

attempt to re-use as suction would

be reduced.

Checking the dustbag change indica-

tor

^ Attach the floorhead to the vacuum

cleaner. Other attachments, for exam-

ple the crevice nozzle, can affect the

function of the dustbag change indi-

cator. Therefore only test with the

floorhead fitted.

^ Switch the vacuum cleaner on and

select the highest power setting.

^ Lift the floorhead off the floor a little. If

the marker completely fills the indica-

tor window, then the bag needs to be

changed. It can also indicate a

blockage in the hose.

Maintenance and care

How the dustbag change indicator

works

The indicator is designed to show when

the bag is full of common household

dust and works by measuring the air

permeability of the dustbag. Normal

household dust is composed of a mix-

ture of dust, hair, carpet fluff, threads,

grit etc.

However, if an amount of fine dust,

such as plaster, brick dust, cement or

flour is vacuumed then the pores of the

dustbag become blocked very quickly.

The marker will indicate that the bag is

"full" even when it is not. In this instance

the dustbag must be changed as suc-

tion power is reduced when the pores

of the dustbag are blocked.

If, on the other hand, a large quantity of

hair, wool or carpet fluff is vacuumed,

the dustbag change indicator may not

full. This is because the air permeability

of the dustbag may still be high enough

not to activate the marker to show maxi-

mum. The dustbag should still be

changed.