Fuse; Pressure Switch Adjustment; Drainage Safety - Astralpool VRAC III Basic Series Installation And Maintenance Manual

ENGLISH

2.4 FUSE .

The valve's electronics board incorporates a safety fuse to prevent any damage being caused to the J10
connection (terminals 4 and 5).
As stated in the previous point, incorrect connections or other connected components which increase
power consumption at the connection between the solenoid valve of the pump contactor and the valve
may result in operational faults.
A fuse therefore prevents the consumption through this conductor exceeding 0.4 A, thus preventing such
faults. In the event that the fuse fails, check the electrical installation to ensure that it matches the electrical
diagram before replacing the fuse with a new one of the same specifications.

2.5 PRESSURE SWITCH ADJUSTMENT.

Use the filter or valve manometer as a reference guide when reading the pressure gauge. Proceed as
follows:
1º Turn the pressure switch screw (1) (APPENDIX 1 - fig. 1) until it is flush with the black piece (it is not
necessary to tighten it all the way).
2º With the pump running, close the return valve to the swimming pool until you can read on the
manometer the maximum pressure you wish the equipment to be run on. This point is the pressure
value at which the valve will start the backwash and rinse process of the filter.
3º Gently loosen the screw (1) (ANNEX 1 - Fig. 1) of the pressure switch until the green LED backwash
button light of the control panel comes on (see chapter 4.1 of this manual). After approximately 20
seconds, the pump will stop and start the wash routine.
4º IMPORTANT. Open the pool return valve.
The pool's return tube has to be equipped with a ball valve to ensure a correct adjustment.

2.6 DRAINAGE SAFETY.

The valve comes ready to be installed in an electrovalve in the drainage circuit. Its use is recommended in
order to avoid water loss in case there is no electrical connection and the valve ends up in a position that
could lead to the pool emptying. The electrovalve used should have as low a pump pressure orifice as
possible, maximum 40 - 50 kPa (0.4 - 0.5 bar). The voltage of the solenoid should be 24 Vac (See APPENDIX
1 - Fig. 9).
F 400mA L 250 V
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