Maintenance Istructions For The Safety Valve (Water Block ® ) - W&H Osmo Manual Del Usuario

MAINTENANCE ISTRUCTIONS FOR THE SAFETY VALVE
WATER BLOCK (WB) SAFETY VALVE
Indispensable device for washing machines, dishwashers and demineralizers as, under the conditions defined in the technical
features herewith described, it prevents a flow of water greater than the one for which it has been set by the adjustment
pointer. This avoids continuous leaking. The Water Block also has a particular non-return valve (antipollution). The device
should be installed vertically (see fig. 2) and following the instructions carefully.
TECHNICAL FEATURES
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Burst pressure: 500 N/cm²
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Max. static pressure: 100
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Max. controllable volume: about 50 lt.
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Min. operating capacity: 2 lt/min.
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Max. operating capacity: 30 lt/min
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Max. water temperature: 70° C
USER INSTRUCTIONS
WATER BLOCK should be installed between the tap and the supply hose of the
demineralizer (fig. 2). Using the enclosed plastic key, turn pointer 'P' (fig. 1)
anticlockwise to the required setting (example, position 1,5).
CAUTION:
For use on other fixtures, set the pointer to a position suitable for that particular application, considering that each number on
the scale corresponds to a controlled volume of approx. 4-6 litres.
In case of installation on fixtures which foresee dispensing of drinking water for alimentary use it is advisable to let flow at least
10 litres of water inside the device before the connection, so as remove eventual impurities banked during the storage.
INSTALLATION
1. Manually screw the WB to the tap having suitable thread (3/4" gas),
inserting the filter 'E' with its convex side facing upwards (fig. 2). The
WB will not operate properly if the filter is not installed correctly. If the
WB is tightened or loosened with the aid of a wrench, the same must
be applied to the appropriately octagonally shaped part of the housing
'A'.
2. Screw the supply hose 'C' to the lower end of the WB. If the supply
hose is equipped with a filter, the latter must be substituted by a flat
rubber washer 'F'. If the said hose has to be tightened or loosened with
the aid of a wrench, the same must be applied to the appropriately
octagonally shaped part of the WB housing 'B' so as to hold it firmly
while performing this operation.
If a failure occurs causing a continuous water leak, the WB will shut off
when the volume of water flowing through equals the amount to which it
was previously set with the pointer 'P'.
To reset the Water Block again after it has shut off, turn the tap off and
carry out the necessary repair work. Remove the supply hose 'C' from
the Water Block and press the coloured plunger 'H' which is located
inside the lower housing of the device itself (fig. 1). It may be difficult to
press this plunger if there is high pressure at the inlet side of the WB. In
this case, slacken the device from the tap: the plunger 'H' can then be
pressed with ease. Repeat the operation as described in the section
headed 'Installation'.
CAUTION:
To avoid any possible damage that may be caused by water freezing inside
the WB after its installation, the ambient temperature should never be below
2° C. We decline all responsibility deriving from th e incorrect use of the WB
or from its use for applications and/or solutions not expressly foreseen by the
above instructions.
MAINTENANCE:
Depending on the conditions and frequency of usage of the water block, it is recommended to
clean out the inlet filter 'E' periodically and to replace the seal 'F' .We reserve the right to modify any
features without prior notice.
Osmo
(WATER BLOCK
N/cm²
®
)
Fig. 1
Produced by
ELTEK s.p.a.
Tel. 0142 335511
Fax 0142 335555
15033 Casale Monf. (Italy)
salesdept@eltekgroup.it
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