| Pump type | Submersible coaxial horizontal piston |
| Nominal depth | 0-150m (within normal materials stresses) |
| Maximum depth | 250 + m |
| Nominal installation below water level | 2-10m.Where less than 1m. consult supplier |
| Maximum installation below water level | 50 + m with panel & controller, 25m. with batteries at 24V |
| Pump height | 760mm |
| Pump diameter | 98mm |
| Number of units in 6" ID borehole | Up to 5 |
| Piston diameter | 2 x 40mm |
| Pump lubrification | 40Ml of non toxic oil |
| Pump weight with motor | 14kg |
| Pump weight without motor | 11kg |
| Outlet, internal diameter | 19mm |
| Valve type | 2 x conical flapper |
| Diameter valves | 60mm external |
| Cam diameters in mm | 2.0; 2.2; 2.6; 3.0 |
| Piston movement acc/to cam size in mm | 1.0; 1.1; 1.3; 1.5 |
| Standard cam size | 2.6mm (3.0mm with Hyboost) |
| Standard spring force | 10kg |
| Maximum hydraulic capacity | 33 liters/minute with Hyboost;16 liters/minute without Hyboost |
| Hyboost pipe (standard) | 140mm |
| Motor type | Brushed DC permanent magnet |
| Cooling | AIR |
| Nominal power rating | 0W-200W |
| Motor speed | 0-3000 rpm optimised at 2000 rpm |
| Voltage | 24V-80V |
| Amperes | 0-4.5; peak 4.5 amps, ave.operational 3.5 amps |
| Amperes | 0-5; peak 5 amps, ave.operational 4 amps (with MK I/C Koala for depths up to 30m only) |
| Motor resistance | Up to B907 1.8 Ohm; B907 and after 1.4 Ohm |
| Start up current | 1.5 amps |
| Start up irradiance | 300 w/m2 |
| Kick starter | Maximum 20 amps for max. 50 milliseconds |
| De-magnetisation | 24 amps |
| Motor protection | B14 |
| Brushes | 2 x special alloy, fail safe |
| Size of brushes | Length mm 15mm, width 13mm, breadth 6mm |
| Rate of wear of brushes | approx 2.5mm per 1000 hours |
| Diameter motor | 83mm |
| Weight of motor | 3kg |
| Dry running | Yes (air-cooled) |
| Water temperature | 4 degrees C - 40 degrees C |
| Operating temperature | Ambient + 50 degrees C |
| Type: | High density polyethylene, nominal pressure 16 bar(10 bar can be used up to 30m depth) |
| Internal diameter | 18mm |
| External diameter | 25mm |
| Resistance to sun’s rays | Acceptable, but imbedding recommended |
| Meters per roll | 100m |
| Weight of roll | 25kg |
| Dimensions of roll | Diam. external 100cm |
| Weight per meter | 0.25kg |
| Type, for submersion in water, subject to national norms | Indicatively 2 x 2.5mm2 up to 80m, 2 x 4mm >80m. Larger cables may occasionally be required. Three wire cables will be required where the use of ground cable is legally unavoidable. NEVER USE POROUS CABLE |
| Type, for submersion > 100 meters) | Use 2 x 6mm. Three wire cables will be required where the use of ground cable is legally unavoidable |
| Class | 5th class CEI 20-29 in metal coated copper |
| Max. resistance of wires (in- and out-) | 1.5 ohms |
| Nominal voltage | 450/470V |
| Max.rated operating temperature | +60 deg.C |
| Mac. rated short circuit temp. | +200 deg.C |
| Insulation | Rubber insulation El 1 quality completely watertight for submersion in water to at least 10 bar pressure |
| Sheath | Neoprene EM2 |
| Metres per roll | 100 |
| Weight of roll | 2 x 2.5 20kg each 100m |
| Weight of roll | 3 x 2.5 22kg each 100m |
| Weight of roll | 2 x 4 27.5kg each 100m |
| Weight of roll | 3 x 4 33.5kg each 100m |
| Typical dimensions of roll | External diameter 40cm, height 15cm |
| Type of protection of length with pump | Submersible, resin packed, leak-proof |
| Cable supplied with pump | 1.5m with 3 sets of internally sealed copper strands, sealed inside an outer neoprene sheath in turn sealed at the point of entry into the pump to the motor cover. |
| Cable ties | Polypropylene |
| Type | Any combination in parallel or in series up to 400Wp, 24-80 V |
| Panels to pump motor | Direct D.C. or through batteries |
| Inverter | None required |
| Battery storage | None required as standard |
| Use of batteries as optionals | 2 x 12V or 3 x 12V (maximum 36V) |
| Switch | Manual on support or with sensor |
| Switch type | Standard hermetically sealed type |
| Current regulation/kick starter | Strongly recommended - see notes Sunprimer |
| Type | Lattice type on 50cm thick concrete slab |
| Dimensions | 250cm x 80cm x 80cm |
| Weight | 120 kg |
| Material | Hot dip galvanised mild steel |
| Daily tracking | 1) Standard no 2) Alternative 3 point manual |
| Height from ground | Recommended 2m-2.5m |
| Resistance to wind | All recorded wind speeds |
| Resistance to shock | Extremely resistant |
| Resistance to abrasion/salt corrosion | Acceptable |
| Material | Hot dip galvanised mild steel |
| Length | 3m. |
| Diameter | 76mm standard |
| Anchoring | 1m below ground |
| Type | Ferrule joints, shrink tubes over plastic tube with epoxy filling |
| Type of shrink tube | Raychem or equivalent internally glued |
| Measurements of shrink tube | Length 35-40cm; internal diameter 20cm |
| Alternative splice kit: part 1 | Duraseal ferrule + heat shrink joints DS 14-16 blue for wires to 2.5mm2, DS 10-12 yellow for wires 4mm2 and 6mm2 |
| Alternative splice kit : part 2 | Raychem internally glued shrink tubes WCSM 20/6 internal diameter 20mm, length 35-40cm |
| Alternative splice kit : part 3 | 2 x Raychem internally glued shrink tubes WCSM 9/3 internal diameter 9mm, length 10cm |
| Alternative splice kit : part 4 | Raychem ES-CAP at least 5cm for sealing off earth wire |
| Type | Double rapid couplings |
| Type | 8mm POLYPROPYLENE rope with rating >400kg (NOT NYLON; USE OF METAL ROPE VOIDS WARRANTY) |
Multiple pump installations are important because they enable considerable savings to be made on drilling costs, to the point where the cost of the solar pumping systems can be lower than the amount saved on drilling costs. Solar Spring pumps are capable of pumping at great heads and of forcing water over several kilmeters if necessary to dedicated water tanks near users' houses.
For a drawing of a multiple pump installation, pease refer to MULTIPLE PUMP SYSTEM
1) To interrupt current connection between the PV panels and the pump when insolation or the battery charge is such that voltage is so low, about 22V, that the pump slows down to the point where it stops. This stops the motor from being put under continuous load when stopped.
2) To start your Solar Spring pump as early as possible in the morning and keep it going as long as possible into the evening (thus extending running time), provided insolation or battery charge is sufficient to keep the pump running. If the pump cannot start, or is turning too slowly, function 1 enters into operation. If insolation is reasonable, function 2) will make another attempt to start the pump. A secondary timer unit attempts to start the pump at intervals of approximately two. This timer also operates on initial starting up, so that the pump will start operating APPROXIMATELY TWO AFTER ELECTRICAL CONTACT HAS BEEN MADE.
3) To switch nominal voltage between 48V and 24V in relation to the available power from the PV panels and pump load, so as to optimise amperage absorbed by the pump motor and adjust motor speed as required to optimise pump capacity. It does this by automatically connecting all the panels in series or in two sets each of two panels in parallel, according to insolation and the load on the pump. This enables the pump to operate better in slightly cloudy conditions and/or earlier in the morning and later in the evening. This device performs some of the functions of traditional "boosters". The controller charges the capacitor to 60V in 48V, 24V direct, and battery applications. The controller starts in 24V mode, then switch to 48V if sufficient current is available.
4) To connect the Solar Spring pump to GOOD QUALITY external float switches and/or other devices such as presostates. This is the smallest cable which comes out of the Sunprimer. It has two wires which, when placed in contact with one another or in an electrical circuit, interrupt the electricity supply. When the two wires are not in contact with one another or in an electrical circuit, the controller feeds current to the pump motor and, assuming insolation is sufficient, the pump will start again after about three minutes. The external controls or switches used should be of high quality and such that on and off contacts be made cleanly, precisely and quickly. Uncertain or irregular contacts may damage the controller.
5) To save pump motor and system components where specifications are not complied with during installation and/or in the presence of particular extreme or unforeseen environmental events (including freezing or blocking of the feed pipe system for any other reason or excessive draw-down of water in the borehole) where a fail-safe system is needed. For instance this function intervenes to cut current where current is greater than 4.5 amps for more than half a second. Normal starting procedures will then be activated, so the pump will attempt to start again after approximately two minutes (Mk II). Another device will act to cut current to the contoller by putting the PV panels into short circuit when for any reason the main transistor in the controller is damaged so that the controller can no longer work properly. The pump will automatically start again once the damaged transistor has been repaired.
6) The Mk II controller does not have a minimum current control to switch the pump off when it is running dry. The pump can run dry for days or even weeks without suffering undue harm. It has been assumed that where dry running is not immediately obvious to users, those interested will carry out periodic checks to make sure the pump is in fact pumping water.
FOR FURTHER PRESENTATION OF THE SOLAR SPRING PUMPS PLEASE GO TO:
PRESENTATION OF THE SOLAR SPRING PUMPS
APPLICATIONS OF THE SOLAR SPRING PUMPS
COMPONENTS DESCRIPTION
