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Page 30 

 

10.4

 

T

ROUBLESHOOTING 

C

HECKLIST

 

The following items may be causing the solar water pumping system to have less than expected flow 
rate  or  pump  failure.    Be  sure  to  go  through  the  list  before  contacting  your  Authorized  SunRotor

®

 

Dealer or calling the SunRotor

®

 Technical Services Team. 

1.

 

Is  the  solar  array  receiving  shadow-free  light?    It  only  takes  a  small  shadow  to  reduce 
efficiency.    Is  the  solar  array  oriented  properly  toward  the  south,  and  tilted  at  the  proper 
angle?  See 

Section 5 Solar Array Installation

2.

 

Has  any  additional  lift  or  pressure  requirements  been  added  or  changed?    The  system  was 
sized  based on specific information provided; if this  is changed,  there may be a reduction in 
flow rate. 

3.

 

Are the wires and pipes undersized?  If the pump wires and pipe were not adequately sized 
for the distances used, the flow rate may not be consistent due to loss in current and/or friction 
loss. 

4.

 

Inspect and test the solar array input and controller output.  Are the values lower than what 
the  system  is  rated  for?    This  may  be  caused  by  a  short  in  the  wire,  bad  connection  or 
improperly configured wiring. 

5.

 

Are there any leaks in the pipe  from the pump?   There should be little or no leakage over a 
period of hours. 

6.

 

Has  the  pump’s  speed  control  setting  been  moved  lower  than  the  maximum?    The  speed 
control can slow the pump down to 30% of maximum power, and may be causing lower than 
expected flow rates if moved. 

7.

 

Look in the water tank or pipes: 

a.

 

Is  the  AC  motor  current  lower  than  normal?    The  rotor  and/or  stator  may  have  been 
worn  from  too  much  abrasive  materials  or  particles  (sand  or  clay)  in  the  water.    See 

Section 11 Maintenance

 for more details on how to change the rotor/stator. 

b.

 

Is the AC motor current higher than normal?  Does it have trouble starting in low light?  
This is likely related to a blockage in the pump and/or pipe.  

c.

 

Is  there  sediment  accumulating  in  the  pipes  or  tank?    Additional  accessories  may  be 
needed  to  keep  from  damaging  the  system  (See 

Section  7.10  Coping  with  Dirty  Water 

Conditions

). 

Additionally, age may be a factor.  After many years of use, it may be necessary to  have the motor 
rebuilt  or  replace  the  pump  end.    For  more  information  and  services  provided,  please  contact  the 
SunRotor

®

 Technical Services Team. 

11

 

M

AINTENANCE

 

One of the defining features of the SunRotor

® 

solar pump product line is its ability to be repaired at a 

fraction of the cost of buying a new replacement.  A little care and attention can extend the life of the 
system drastically and save money in the long run. 

Summary of Contents for Solar Pump

Page 1: ...SunRotor Solar Pump Installation and Resource Manual...

Page 2: ...ing Pole Guide for Top Of Pole Mounts 9 5 6 Seasonal Tilt of the Solar Array 10 5 7 Solar Array Wiring 10 5 8 Grounding and Lightning Protection 12 6 Pump Controller Installation 15 6 1 Pump Controlle...

Page 3: ...gs 24 9 2 Wiring the Controller 24 9 3 Wiring Power to the Controller 26 9 4 Post Installation Testing 26 10 Troubleshooting 26 10 1 If the Pump Doesn t Run 26 10 2 Inspect the System 27 10 3 Electric...

Page 4: ...LLC All Rights Reserved REGISTRATION FORMS Please look through the following form and fill out before during and after as needed This form is necessary to REGISTER YOUR WARRANTY The information provi...

Page 5: ...Pump Serial Number Controller Model Controller Serial Number System Power PV Direct Battery System If PV Number of Panels Solar Panel Brand Solar Panel Wattage Watts Operating Voltage V Well Depth ft...

Page 6: ...pump Protect the pump from sunlight or other heat sources SunRotor solar pumps are CLEAN WATER PUMPS Extreme sand or silt may cause the pump to stop or fill the pipe with debris Running it under these...

Page 7: ...Module Mounting Rack 3 Water Pipe 4 Well Seal Assembly 5 Low Water Sensor 6 Submersible Pump 7 Conduit and Wiring from Controller to Well Seal 8 Wiring Harness from Controller to Solar Modules 9 DC I...

Page 8: ...al weather resistant connection box with cooling fins cast on the back It has a clear cover which allows visible inspection of all of the connections and LED status lights It offers a wide operational...

Page 9: ...ill reduce the power substantially slowing or possibly stopping the pump 5 3 SOLAR ORIENTATION For optimal performance the solar array must be oriented within 10 of true solar south Depending on locat...

Page 10: ...local soil conditions is consulted FIGURE 5 1 MOUNTING POLE GUIDE Module Area Pole Size Steel Pipe Depth in Ground Height Above Ground Hole Diameter 15 SQ FT 2 SCH40 2 3 8 OD 30 36 48 72 8 12 20 SQ FT...

Page 11: ...WIRING WARNING Photovoltaic arrays generate hazardous voltages A 48 Volt nominal array can generate nearly 100 volts when disconnected from load All wiring MUST be done by qualified personnel in compl...

Page 12: ...ts to the controller completing the circuit Since this array is wired in series the voltage doubles to 76 VDC VMP or average up to 90 72 VDC open circuit the watts double to 390W 195W x 2 and the curr...

Page 13: ...ns are not taken A proper connection to ground earth is important as it allows static electricity to discharge to earth helping to prevent the attraction of lightning In case of a nearby lightning str...

Page 14: ...er s ground terminal is connected to an effective ground path Bond the structural components and electrical enclosures Interconnect the PV array frames the mounting rack and the ground terminals of al...

Page 15: ...negative ground If the wiring distance to the pump exceeds 100 feet particularly in a high lightning area or a charge controller that requires negative grounding DC rated surge protection devices are...

Page 16: ...tor controller features adjustable speed control low water and tank full sensor connections linear current boosting technology and an adjustable timer that allows well recovery up to 30 min after the...

Page 17: ...6 2 LOCATING AND MOUNTING THE CONTROLLER CAUTION Direct sunlight can reduce the life of the controller Mount the controller so it is shaded from the mid day sun The easiest location is under the PV a...

Page 18: ...ses and closes the circuit The pump will shut down until the water level decreases and the remote switch returns back to the open position Well_L Solid or flashing Red This indicator light is illumina...

Page 19: ...ving it in the reverse direction which could generate potentially harmful voltage to the controller Most check valves have an arrow indicator displaying the direction of flow make sure the arrow is fa...

Page 20: ...ram 7 4 SAFETY ROPE It is recommended that the safety rope be polypropylene or polyethylene water well safety rope It can be purchased from your Authorized SunRotor Dealer or local pump supply store I...

Page 21: ...rope must be bound to the drop pipe with tape of an industry approved UL listed variety See Figure 7 2 Binding Diagram Pipe wrap tape is recommended First wind tape around the pipe more than one turn...

Page 22: ...ht The use of flexible conduit running from the top of the well seal or cap to the controller is recommended This will help against contamination and damage from animals Please inform your Authorized...

Page 23: ...tize the well prior to pump installation This can be done with chlorine bleach or a dry chlorine compound poured down the well just before or just after a pump is installed Consult a local supplier or...

Page 24: ...ng these warnings will void the warranty Lay a barrel metal oil drum or similar rounded object next to the wellhead Run the pipe cable and rope over the round surface to ease the downward bend and to...

Page 25: ...ety or correct wiring are present this process please contact your Authorized SunRotor Dealer or the SunRotor Technical Services Team at 1 866 246 7652 9 2 WIRING THE CONTROLLER Run the pump and senso...

Page 26: ...Your Wires attach them accordingly otherwise use Figure 9 1 SunRotor Pump Controller Wiring Diagram to wire the pump properly typically terminal 1 black terminal 2 blue terminal 3 brown on most SunRot...

Page 27: ...losed switch removing one end of the sensor cable or jumper will trigger the circuit logic to turn off the pump To test the timer function set the timer to a low setting somewhere between 0 and 5 arou...

Page 28: ...new installation 2 Make a visual inspection of the condition of the wires and connections Wires are often chewed by animals if they are not enclosed in conduit or buried Inspect the Controller 1 Open...

Page 29: ...a choice of probe sockets The black negative probe ALWAYS goes in the COM common socket The red positive probe varies and is specified below on each of the tests FIGURE 10 1 ELECTRICAL TESTING Test P...

Page 30: ...e a short circuit and can damage the equipment Access Open the controller cover to access the terminals The appearance of the terminals and or wiring may vary WARNING These tests pose potential shock...

Page 31: ...the pump There should be little or no leakage over a period of hours 6 Has the pump s speed control setting been moved lower than the maximum The speed control can slow the pump down to 30 of maximum...

Page 32: ...d remove the pump housing Remove the setscrews in the motor coupler rubber piece and unscrew the rotor from the motor shaft counter threaded turn clockwise to remove Install the new rotor and replace...

Page 33: ...or replaced contact the SunRotor Technical Services Team at 1 866 246 7652 or 1 580 303 4015 You will be provided with an RMA number ATTENTION DO NOT send any equipment back to SunRotor Solar Products...

Page 34: ...complements the SunRotor solar submersible pump product line Pairing the two products many of our customers are finding new and inventive ways to meet any number of water demand applications It is th...

Page 35: ...mping http www solarpowerandpump com why go solar Database of State Incentives for Renewables Efficiency another site very useful in trying to maximize your savings http www dsireusa org Renewable Ene...

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