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The SQFlex is a reliable water supply system especially suitable for remote locations not connected to the electricity supply grid. The SQFlex system is equipped with the SQFlex submersible pump. The SQFlex system is powered by renewable energy sources.
Two pump types are used, the helical rotor pump type and the centrifugal pump type.
The nameplate is engraved into the pump sleeve.
Pos. Code Description 1 PROD. NO. Product number MODEL A Pump generation P1 Production code - Bjerringbro (P1) + production year and week 2 xx SQF - x Type designation, see section Type key on page 6 3 • Weight: x,x kg • MADE IN DENMARK • CE •Pump net weight • Country of origin • Mark of approval. 4 Rp 1 1/4 Type and size of connecting thread
The nameplate is attached to the suction interconnector.
Pos. Code Description 1 Type 60 SQF -3 Type designation, see section Type key on page 6 2 MODEL A Pump generation 3 Product number 4 Q m³ Rated flow rate (not indicated) 5 Weight 4.9 kg Pump net weight in kg 6 CE Mark of approval 7 Production year and week 8 n min -1 Speed (not indicated) 9 H Head at rated flow rate (not indicated)
The type key is common for helical rotor pump and centrifugal pump. Centrifugal pumps come in two main types: with splined pump shaft and with cylindrical pump shaft. 25 SQF-3 and 25 SQF-6 have a splined pump shaft. 40 SQF-3 and 60 SQF-3 have a cylindrical shaft. X SQF-X Rated flow rate in US GPM at 3000 min-1 (approximate value) • 3 = helical rotor pump • 6 = helical rotor pump • 11 = helical rotor pump • 25 = centrifugal pump • 40 = centrifugal pump • 60 = centrifugal pump Type range Number of stages
The MSF 3 motor is a sealed construction made of stainless steel. It is a brushles, electronically commutated DC-motor with a permanent-magnet rotor.
The nameplate is engraved into the stator sleeve.
Pos. Code Description 1 MSF 3 Type designation 2 PROD. NO. Product number MODEL A Pump generation P1 Production code - Bjerringbro (P1) + production year and week 3 VDC: 30-300 V VAC: 1 x 90-240 V The motor can be supplied with either DC or AC voltage: • DC: 30-300 V or • AC: 1 x 90-240 V P1: 0.9 kW Maximum input power [kW] I: 7 A Maximum input current [A] S1/40 C Suitable for continuous operation up to 40×C 4 CONT. DUTY 104F Suitable for continuous operation at 104°F Ins Cl F Code A Insulation class F. Start-kVA is 0-3.15 per hp 5 PF 1.0 RPM 500 - 3600 Power factor = 1. Rated speed 500 - 3600 rpm 6 IP 68 150 m Enclosure class: IP 68. Max submerged depth: 150 m Weight 6.55/14.4 kg/lb Motor net weight in kg and pounds 7 THERMALLY PROTECTED Temperature sensor built into the electronic unit MADE IN DENMARK Country of origin CE Mark of approval
The CU 200 SQFlex control unit offers: • system monitoring on the basis of sensor signals • system control on the bas is of sensor signals • monitoring of pump operation and alarm indication. Technical data • 30-300 VDC, PE. • 1 x 90-240 V –10%/+6%, 50/60 Hz, PE. Maximum load: 100 mA.
The front cover of CU 200 features a button and various indications: ON/OFF button • Green light on: The system has been switched on. • Red light on: The system has been switched off. • Both lights off: The system lacks the required power to light the display. • Flashing green light: The system has adequate power to light the display but lacks sufficient power to start the pump. Full water reservoir The yellow light indicates that the water reservoir is full. Pump operation A running green light indicates that the pump is operating at more than 500 rpm. Fault indicator Red light indicates fault. Dry running Red light indicates lack of water. Power and fault codes The display indicates 0 Watt until the power supply is sufficient to run the pump at 500 rpm; upon startup, the power consumption of the pump is indicated in kW. When the fault indicator is on, the display indicates fault codes, see Trouble-shooting by means of CU 200 on page 10. F1 = overvoltage F2 = overtemperature F3 = no contact to the pump F4 = overload
Indication/Fault Possible cause Remedy 1. No light in front cover. Pump does not deliver water. No voltage supply. • Reestablish the voltage supply. Position of ribbon cable connector is wrong or cable is defective. • Correct the position of the cable or replace it. 2. No light in front cover, and pump does not deliver water. But the LEDs inside CU 200 indicating 5 V, 10 V and 24 V internal supply voltage are on, and the ‘CONTROL INDICATOR’ LED is not flashing. CU 200 is defective. • Replace the CU 200. 3. Pump does not start. Green indicator light in ON/OFF button is on. No fault indicated. CU 200 or pump is defective. • Check that the ‘CONTROL INDICATOR’ LED is flashing. If not, replace the CU 200. • Check that there is sufficient voltage on the PUMP terminals. If no voltage can be measured, replace the CU 200. If a supply voltage to the pump can be detected, continue as follows: • Switch off the energy supply and wait for one minute. • Switch on the energy supply and observe what happens: If the green indicator light in the ON/OFF button is on and the pump still does not start, the pump or pump cable is defective. • Repair or replace pump or cable. 4. Off light in the ON/ OFF button is on. Pump has been stopped. • Press the ON/OFF button on the CU 200 to start the pump. 5. CU 200 indicates ‘F3 = no contact to pump’. CU 200 defective. • Check - the connection in the CU 200 - the pump cable - the end cover with socket on the pump. Pump cable or connections defective. Pump is defective. • Repair or replace the pump. 6. CU 200 indicates ‘F1 = overvoltage’ Supply voltage is above permissible range. • Disconnect the solar modules to allow the voltage to drop. • Reconfigure the modul es and reconnect them. If a different supply sour ce is used, check that the voltage is within the recommended voltage range. Note: As the voltage is detected at the motor, allow for the voltage drop in the pump cable. 7. CU 200 indicates ‘F2 = overtempera- ture’. Too high water temperature. • Ensure that the water te mperature is below the maximum permissible level. Incrustations on motor. • Remove incrustations on the motor. Pump is defective. • Repair or replace the pump. 8. CU 200 indicates ‘F4 = overload’. Too low input voltage. • Increase the supply voltage, to 30 VDC or higher. Pump is defective. • Repair or replace the pump. Only helical rotor pumps. Pumped liquid is contaminated with oil or similar substance. • Clean the liquid and replace the pump. Motor liquid low / Missing. • Check or refill motor liquid. 9. Green indicator light in ON/OFF button is flashing. Insufficient power supply. • Increase the number of solar modules or connect an alternative energy supply, such as wind turbine, batteries or generator. Pump has seized up. • Clean the pump. 10.Running light on CU 200 but low wattage. System not grounded. • Check system for adequate grounding Pump is defective. • Repair or replace the pump. If a centrifugal pump is us ed: Check that the riser pipe is not blocked. 11. No light in front cover. Pump delivers water. CU 200 is defective. • Replace the CU 200. Ribbon cable not mounted. • Mount the ribbon cable. 12.Pump does not stop when water reservoir is full. Fault indicator light on CU 200 is off. Level switch is dirty or defective. • Clean or replace the level switch. Cable on level switch is damaged. • Replace the cable. 13.Pump does not stop when water reservoir is full. Fault indicator light on CU 200 is on. CU 200 is defective. • Replace the CU 200. 14.Pump does not start when water reservoir is empty. Water reservoir indicator is on. Level switch is defective. • Replace the level switch. Cable on level switch is damaged. • Replace the cable. CU 200 is defective. • Replace the CU 200. Indication/Fault Possible cause Remedy
Technical data: DC: Max. 225 V, PE. AC: Max. 265 V, 50/60 Hz, PE. The IO 50 enables manual starting and stopping of the pump in a solar-powered SQFlex system. In addition, the IO 50 functions as a connection point for all necessary cables.
Technical data: • DC: Max. 225 V, PE. • AC: Max. 265 V, 50/60 Hz, PE. The internal relay in the IO 101 has the following rated voltage: • 115 V –15%/+10%, 50/60 Hz, PE. The IO 101 SQFlex switch box makes it possible to • switch off the voltage supply to the pump and • connect a back-up generator. A back-up generator is useful in periods of insufficient solar energy or in case of an immediate requirement for water supply or a need for water at night.
The IO 102 is applicable in SQFlex systems powered exclusively by a wind turbine The IO 102 SQFlex breaker box makes it possible to • switch off the voltage supply to the pump, and • Stop the wind turbine blades • connect solar modules as well as a wind turbine. The IO 102 is applicable in SQFlex systems provided the system voltages ment ioned below are not exceeded. IO 102 Technical data: • DC: Max. 225 V, PE • AC: Max. 265 V, 50/60 Hz, PE.
Solar modules located in the northern hemisphere should face south. Use a compass to position the modules as precisely as possible. Due to the magnetic de clination it may be necessary to turn the modules some degrees away from the direction of the compass. In case of positive declination, turn the modules some degrees to the west, in case of negative declination, turn the modules some degrees to the east. Solar modules located in the southern hemisphere should face north. Use a compass to position the mod- ules as precisely as possible. Due to the magnetic de clination it may be necessary to turn the modules some degrees away from the direction of the compass. In case of positive declination, turn the modules some degrees to the east, in case of negative declination, turn the modules some degrees to the west.
The solar modules must be mounted on a support structure. When mounting the solar modules, make sure that the mo dule frames overlap in orde r to allow for rain water to run off. For further information on the installation of solar modules, see installation and operating instructions for the modules.
For maximum utilisation of t he solar radiation the tilt angle of the support structure can normally be adjusted from 15° to 45°.
Visual inspection of solar modules • Check that the solar modules are intact. • Make sure that trees, grass, bushes, buildings, etc. do not cast a shadow on the solar modules. Electrical connection GF 80 solar modules Note: Before making any electrical connections, make sure that the solar modules are covered with a non-transparent covering material to ensure that the modules are dead. • The cover must be removed before measuring is made. • Measurements must be made when the solar modules are not connected. • The current to be measured is the short-circuit current ISC. The GF 80 solar modules are equipped with plugs and sockets for easy connection of several modules in parallel or series. The solar modules must be mounted on a support structure, tilted at an angle ensuring optimum utilization of the solar energy. This module is UL, Tüv, CE and IEC 61215 approved. GF 80 Peak power (PMax) 80 W Voltage (Vmp) 33.3 V Current (Imp) 2.4 A Open circut voltage (Voc) 41.5 V Short circut current (Isc) 2.6 A Reference cell temperature (Tcref) 25 °C Solar irradiation at reference cell temperature (Itref) 1000 W/m2
The solar panels must be connected to earth via a Protective Earth (PE) conductor Note: To achieve good earth connection and thus to protec t persons, it is of decisive importance to fit the earth clips and earth terminals Cable sizing chart Note: max. cable length in feet; uses a max. 3 % voltage drop Max. cable length between CU200 and SQF = 650 ft. SQ Flex is most efficient at 120V and above. Grundfos recommends combining panels to produce 120 or above. Panels Power (Wp) Volts (Vmp) Amps (lmp) Volts (Voc) Amps (lsc) 14 AWG 12 AWG 10 AWG series parallel 1 80 33 2.4 42 2.6 82 130 207 1 2 160 67 2.4 83 2.6 164 261 415 2 3 240 100 2.4 125 2.6 246 391 622 3 4 320 133 2.4 166 2.6 328 522 829 4 5 400 167 2.4 208 2.6 410 652 1037 5 6 480 200 2.4 249 2.6 493 783 1244 6 7 560 233 2.4 291 2.6 575 913 1451 7 8 640 266 2.4 332 2.6 657 1044 1659 8 8 640 133 4.8 166 5.2 164 261 415 4 2 9 720 100 7.2 125 7.8 82 130 207 3 3 10 800 167 4.8 208 5.2 205 326 518 5 2 12 960 200 4.8 249 5.2 246 391 622 6 2 14 1120 233 4.8 291 5.2 287 457 726 7 2 15 1200 167 7.2 208 7.8 137 217 346 5 3 16 1280 133 9.6 166 10.4 82 130 207 4 4 18 1440 200 7.2 249 7.8 164 261 415 6 3
Values measured between the three phases must be identical. Wind turbine voltage [VAC] IO 102 voltage [VDC] Breaker Box IO 102
1. Find out if the problem is mechanical or electrical. • Propeller cannot turn = Mechanical problem, see Mechanical problems on page 20. • Propeller turns slowly = Electrical problem, see Electrical problems on page 21. Electrical problems may be in the wind turbine or the IO 102 breaker box. Determine which as follows: 2. Disconnect the three wires from the wind turbine one at a time at the IO 102 breaker box. If the propel- ler starts, the wire that allowed it to start leads to a defective rectifier in the IO 102 breaker box. Replace the breaker box, see Overview of possible system combinations on page 26. 3. If the propeller still does not start, the problem is in the tower wiring or the wind turbine. 4. The propeller is running, but may have an electrical problem. Using a voltmeter, read the voltage across the leads and see the list below as a guide to possible problems. • The voltage increases and decreases slowly with wind speed and equally across all wires = Everything OK. • No voltage across two wires = One wire from wind turbine is not carrying power. Check in order: -the tower wiring to ensure it is properly wired. -slip rings and brushes, -stator connections and stator windings for obvious damage. • The voltage is significantly higher across two wires than the others = Contact the distributor or the fac- tory. • Voltage is produced even after ON/OFF switch is activated = Possibly a faulty ON/OFF switch or a wire has been short circuited to the other two wires or an internal fault has occurred in the IO 102 breaker box. • The voltage is significantly lower across two wires than the others = Bad connection at the wind tur- bine voltage connections or faulty stator winding. 5. Should these steps not solve the problem, proceed directly to Electrical problems on page 21.
Fault Cause Remedy 1. Propeller is stationary, even in high winds. • Ice in wind turbine, or uneven ice on propeller. • Debris between rotor and stator. • Loose magnet. • Worn-out bearing. • Remove ice, or wait for warm weather. • Turn propeller gently by hand and blow or use piece of paper to dislodge debris. • Contact distributor. • Contact distributor. 2. a) Propeller will not turn at all except in high wind b) Scraping or rubbing sound at low rpm c) Propeller always stops in the same position. • Same as above. • Swelled wire keepers due to high moisture. • Same as above. • Contact distributor. 3. a) Propeller is difficult to start b) Output is low c) more propeller noise than usual. d) Propeller seems out of balance. • Ice on blade. • Dirty blade. • Split, warped or damaged blade. • One or more blades fitted wrongly. • Remove ice, or wait for warm weather. • Clean with soap or bug cleaner. • Replace broken or damaged blade. • Fit blade(s) correctly. 4. Propeller turns a little, but never starts properly. • Blades
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