DAYLIFF SUNFLO-S 300 Manuale d'installazione e d'uso - Pagina 6

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2.1 MODULE POSITIONING

When positioning the PV Modules avoid all shade .

WARNING

The PV module array should be positioned ideally on an East-West axis at 15 from the

horizontal facing North in the Southern hemisphere and South in the Northern

hemisphere. It is essential that modules are fully exposed to direct sunlight as any shading

will greatly reduce performance.

PV modules are light and simple to fix, frame mounting being recommended. This can be

sited either on a roof or on a ground structure. Frames are available on request.

2.2 PUMP INSTALLATION

For borehole installations it is important to ensure adequate

water availability as damage can occur in the event of dry

running. This should be checked from the Driller's report if

WARNING

available or by careful testing during commissioning.

Pumps can be installed in wells or boreholes and should be provided with fittings as

indicated in Fig1. Piping options are Dayliff PVC for deep wells, galvanized steel or HDPE.

The latter is recommended for shallower wells due to simplified lowering. When installing

the pump ensure to fit the safety rope which can be used to lower the pump down. The rope

should be secured at the well head.

When lowering, it is recommended that the drop cable, electrode cable (if fitted) and rope

are secured to the drop pipe by the tape provided and are not left loose.

A wide range of pump models are available and the pump selected must be matched

to the well/borehole output to provide optimal operating performance. This should

be done with reference to the borehole drillers report in consultation with a borehole

installation specialist where applicable. As a rule pump output should not exceed

65% of maximum tested borehole yield.

Minimum Borehole Diameter 3"pumps-84mm, 4" pumps-110mm.

Maximum Pump Immersion Depth SunFlo-S- 30m, SunFlo-A/B - 20m.

Pumped liquid should be clean, thin and non-explosive containing no solid particles

or fibres. Sand content should not exceed 50gm/m or else pump life will be reduced

and any warranties will be invalidated .

Liquid temperature should not exceed 40 C in order to preserve rubber components.

Pumps can be installed either vertically or at an angle, though if installed at an angle

the discharge outlet should never fall below 10 to the horizontal plane as shown in

Fig. 2. For all angled installations a flow sleeve should be used with a minimum of

0.5m water depth above the pump to prevent the formation of a vortex.