Marco Flash 1900042 Series, Instruction Booklet

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PLUMBING
Permissible mains inlet water pressure:
Minimum 20kPa / 0.02MPa / 0.2bar / 2.9psi
Maximum 1000kPa / 1MPa / 10bar / 145psi
The inlet water must be potable and free of contaminants.
Inlet water should be 5-30°C, pH 6.5-8.5, maximum chlorine
content of 100 mg per litre, total hardness of 60-180ppm. Do
not connect the machine to pure reverse osmosis water or other
aggressive types of water.
Ensure that the equipment is installed according to local plumb -
ing & water regulations.
Installation procedure:
• Fit a stop valve and suitable fitting on a cold water line (e.g. 3/4”
x 1/2” 311 or washing machine type stop valve).
• The boiler requires a suitable food grade inlet hose with 3/4”
BSP female elbow fitting which will attach to the underside of
the machine.
• Make sure that the pre-attached sealing washer is fitted on
both ends.
• Turn on the water to flush any impurities, dust etc. from the
inlet hose and water pipe. Allow several gallons through.
• Connect right-angled tailpiece of the hose to the inlet valve of
the boiler (again 3/4” BSP). Make sure the sealing washer is
fitted here again.
• Turn on water and check for leaks.
NOTE: Using a non-food grade hose (e.g. a washing ma-
chine hose) will usually result in off-tastes & smells in the
water, and can possibly be toxic.
LIMESCALE
In common with all water boiler manufacturers, service calls
resulting from lime scale are not covered by warranty. Fitting
a scale reducer is recommended, especially in hard water ar-
eas. This can reduce the build-up of scale but may not stop it
altogether. The frequency that descaling is required depends on
the local water supply; hard water areas need more attention.
Machines typically need descaling every 3-6 months. Descaling
of the machine requires removal of panels and must only be car-
ried out by qualified service personnel who must read the full
warnings contained in this manual, and must contact the manu -
facturer for detailed descaling instructions. Aggressive descaling
agents can damage the stainless steel tank. Citric acid based
descaling agents are recommended, the tank must be fully
flushed through at least twice to remove all residues.
It is recommended to de-scale the machine every 3 months in
hard water areas and every 6 months in soft water areas. De-
scaling should be carried out by a service agent. It is also recom -
mended to clean the urn after each days brewing using a propri -
etary urn-cleansing compound.
EN