BIANCHI VENDING GAIA BV303 Mode D'emploi page 17

6.2.2 Coffee group maintenance
Monthly extraction of the unit and thorough rinsing in hot water is recom-
mended.
The necessary requirement for this operation is that the coffee unit is in
idle position.
Then detach the pipe indicated in Fig. 6.9, unscrew knob A, rotate lever B
(Fig. 6.10) and then remove the entire coffee unit.
Every 5000 vends and anyhow monthly, it is advisable to lubricate all the mo-
bile parts of the group, using silicone grease for alimentary use Fig. 6.11):
– lower filter piston (1)
– connecting bar (2)
– piston guide (3)
Every 10000 vends we advise to substitute the gaskets and the filters.
– gaskets
– Loosen the screw (Fig. 6.12), wash the filter and replace if necessary.
– re-assemble everything in the inverse order.
COFFEE MACHINE TIMING CHECK PROCEDURE
Ensure that during the idle state, the rotating index is aligned with the stage
index (see fig.6.13)
Ensure that during the delivery stage that the rotating index is not more than
1.5 mm in advance of the delivery reference point (the rotating index must be
at a delivery position of between 0 and 1.5 mm from the delivery point).
6.3 Regulations
6.3.1 Dosage and grinding regulations
The distributor is supplied regulated with standard values and i.e.:
– TEMPERATURE of the coffee in the cup of about 78°C for 38 cc of dispensed
product
– TEMPERATURE of the instant products in the of about 73°C
– grams of coffee powder, about 7,0 grams
– Soluble powder basic weight according to what is stated on product
packaging.
In order to obtain the best results with the product used we advise to check:
- Ground coffee gram weighting: vary the quantity using the knob positioned
on the measuring device (Fig.6.14).
Each notch of the regulation knob corresponds to a value of 0.05
grams.
By turning in a clockwise sense the amount decreases.
By turning in an anti-clockwise sense the amount increases.
The variation in the product can be controlled by means of the reference
notches on the body of the measuring unit (see figure 6.14)
Coffee pellets must be have a compact consistency and be slightly
damp.
– Regulation of the degree of grinding. Turn the screw (fig.6.15) to obtain
the desired results.
Turn clockwise for fine grinding, turn anti-clockwise for coarser grin-
ding.
After regulation, three product regulations must be carried out in order to
assess the efficiency of the regulation, the finer the granules the greater
the time required for product delivery.
6.3.2 Regulation of the instant solenoid water delivery valves (version
soluble only)
In the case of soluble products you can regulate the quantity of water and the
powder dosage electronically by varying the standard parameter, according
to the procedure indicated in chapter 5.0 SOFTWARE INSTRUCTIONS.
Due to problems caused by the formation of lime scale the instant solenoid
valves can have a reduced water delivery.
6.4 Inactivity
If the automatic vending machine remains inactive for a long time it is
necessary to perform some prevention operations:
– disconnect the machine electrically and hydraulically.
– empty completely the instant boiler and the floater reservoir removing
the plug located on the hose along the drain chute.
– Put the plug back in once the draining has been done.
– unload all the product from the containers (Fig. 6.16)
– perform a thorough cleaning of all the parts in contact with food sub-
stances according to what has already been described.
– empty the liquid waste bin carefully
– eliminate the spent grounds bag
– clean with a cloth all the internal and external surfaces of the machi-
ne.
– protect the outisde of the machine with a plastic film wrapping or bag.
– stock in a dry and protected place where the temperature is not less
than 1° C.
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ENGLISH