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6.1  Installing pump in the well  

To reduce noise transmission it is advised to use plastic pipes. 
The pump must always be secured in the well through a special rope attached to loop on the pump head. 
It is recommended not to drop the pump in the well by using the electric cable, its integrity must be preserved in all 
operations. In this regard it is recommended to fix the cable on cable support or on the pipe. 
During operation the pump suction must always remains at least 1.5 meters below the dynamic water level. 
 

 

 

 

Do not drop the pump in the well by using the electric cable 
Make sure about the electric cable integrity during all the operations. 
Ensure the pump in the well with a stainless steel rope to be fixed to the 
hole in the pump head

 

 

6.2 Installing the pump in a solar pumping system 

 
All protections of overload, overvoltage and dry running protection are integrated into the on board inverter. 
It is recommended anyway to install the DC switch to start and stop the pump and to ensure a proper disconnection 
between the pump and panels during maintenance. 

 

Содержание NERA Series

Страница 1: ...NERA solar submersible pumps Installation and Operating Manual ...

Страница 2: ...2 Safety Instructions 3 3 Stocking conditions 3 4 Packing content 4 5 General technical features 4 6 Pump installation 4 6 1 Installing pump in the well 5 6 2 Installing the pump in a solar pumping system 5 6 3 Pump cable 6 6 4 Water level sensing 7 7 Troubleshooting 8 ...

Страница 3: ...ir must be carried out by trained skilled and qualified personnel Failure to observe and follow the instruction of this manual may result fatal in dangerous electric shock The unit must be connected to the power supply by a switch granting the complete visual disconnection separation from the line before any operation Disconnect the unit from the power supply before any operation NERA and pump sys...

Страница 4: ...able ACS KTM WRAS approved Supply Voltage 70 190 VDC Max input power 800 W CERTIFICATIONS CE 6 Pump installation Entire installation procedure must be performed verifying that pump is not connected to the power supply Pump can be installed both vertically and horizontally but the outlet should never be below the horizontal line Minimum head of 10 than max pump head must be granted If the pump is n...

Страница 5: ... pump suction must always remains at least 1 5 meters below the dynamic water level Do not drop the pump in the well by using the electric cable Make sure about the electric cable integrity during all the operations Ensure the pump in the well with a stainless steel rope to be fixed to the hole in the pump head 6 2 Installing the pump in a solar pumping system All protections of overload overvolta...

Страница 6: ...ower supply is longer than the supplied cable it is necessary to make a junction performed by the special kit supplied as standard The cable section for additional power conductors must be calculated considering the maximum allowed power loss 𝑆 2 𝜌 𝐿 𝑃1 100 𝑉2 𝑃 S wire section mm 2 𝜌 specific resistance 0 018 Ω mm 2 m L cable length m P1 pump electrical power W V voltage at maximum power P allowed...

Страница 7: ...onnecting to power supply a test of insulation join together the two power cables and applying a voltage of 500V an insulation resistance from the ground higher than 100 Mohm must be verified Join together the two signal cables and applying a voltage of 500V an insulation resistance from the ground higher than 100 Mohm must be verified WATER LEVEL SENSOR Water level sensing is based on variation o...

Страница 8: ... doesn t provide any water please verify correct wiring voltage conditions 70 190 VDC enough power available solar irradiance water presence if pump during operation runs dry an alarm occurs and pump will stop Every 5 minutes pump will attempt to restart the operation after 5 minutes ...

Страница 9: ...42 EC EMC Directive 2004 108 CE Low Voltage Directive 2006 95 EC We Nastec srl Via della Tecnica 8 36024 Mossano Vicenza Italy declare that NERA solar pumps conform to the following regulations EN 55011 Class A EN 60335 1 EN60335 2 41 Ing Marco Nassuato Operation Manager ...

Страница 10: ...ons in this manual without any notice Nastec srl Via della Tecnica 8 36024 Mossano Vicenza Italy Tel 39 0444 886289 Fax 39 0444 776099 www nastec eu info nastec eu Watertorque Group Address Lot 1 Brand Highway Muchea WA 6501 Phone 08 9195 0351 Email nastec watertorque com au ...

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