Zanussi ZBS 862 - Manual (Page 16)

75
Fig. 18
- When water stops flowing out the water tank,
turn the pipe connector clockwise to close the
exhaust-valve.
Warning! - The connector "A" has not a block fitting.
Take care this connector doesn't slip off the pipe during
the water tank exhaust procedure.
- After the water tank has been drained, melt
two spoonful of citric acid (about 50-60 grams)
into 800 cc. of water.
Citric acid is a natural substance, which
looks like white small grains of sugar. It is
normally used in food industry and can be
purchased in drugstores, wine shops or
chemist's shops.
- Pour the citic acid and water solution into the
water tank drawer, as explained in chapter 5,
page 8.
- Fit the connector "B" to one of the edges of the
exhaust-pipe, then insert the connector "B"
into the steam injector (Figure 18, letter "D").
Place the free pipe edge in a vessel, to collect
the limestone residues.
- Let the citric acid and water solution stay into
the water tank for about 60 minutes, with the
oven cooled down.
- After 60 minutes, switch on the oven by turning
the function control knob on the "STEAM
COOKING" function (symbol:
) and set the
thermostat knob on 140
°
C.
- After about 20-25 minutes, turn the knobs off.
- Allow the oven to cool down, then drain the
water tank following the procedure previuosly
explained.
- When the procedure is carried out, rinse the
water tank by pouring water into the tank
drawer and letting the water flow out through
the exhaust pipe, until you see clear water
without limestone residues coming out.
While carrying out this procedure, a lemon flavour will
be smelt in the room.
If you foresee not to use the steam oven for 2-3 weeks,
we recommend to drain the water tank.
i
i
Using different water types
If you use bottled mineral water or water with low
limestone content, the need of cleaning the water tank
will be reduced (e.g., every 150-200 cookings). If a
water conditioner or a water softener has been installed
in your house, then the main water supply of your house
can be normally used.
Using hard waters (that is, waters with high
limestone content) will make the necessity
of cleaning procedures more frequent, but
this will not affect in any way the oven
operation.
Cleaning the exhaust pipe
When a cleaning procedure has been cariied out,
carefully wash the exhaust pipe in warm soapy water.
Don't use acids, spray cleaners or abrasives to clean the
exhaust pipe and connectors, this could damage them.