User Guide for the Price List Applications Applications Product range displayed on page Click here to go back to the contents Produc C t R R F a L n E g X e SOLAR SURFACE PUMPS ► SOLAR SURFACE PUMPS Model name and product description C P R ro F d LE u X c : t S n O a LA m R e SURFACE PUMPS The Grundfos CR Flex is a multi-stage centrifugal, in-line, non-self priming surface pump specifically designed for water transfer, irrigation and pressure boosting in solar-powered applications. It is fitted with the advanced MG Flex variable frequency driven motor that offers the following features: • Runs at varying speeds depending upon the energy input available. • Can be used for DC or AC power supply and can therefore be connected to either PV solar modules, a standby AC generator or mains power supply as required. • Built in protection for under and over voltage and system overload. No additional protection is therefore required. • One set of terminals is included for either high or low-level control functions. Product image Key technical information 4 Multiple models are available, all powered by the same 1250 W motor providing a selection of head and flow outputs depending on the application. Grundfos solar surface pump Liquid temperature : 0°C to +120°C pH : 5 to 9 CRFlex Solar with level switch Sand Handling : 20 grams/cubic metre Pump Material : Wetted components Stainless Steel AISI 316 Warranty and certification icons Enclosure class : IP 55 The Ele C ctr R ic F al l B e o x xe S s : o IO la 5 r 0 o s r y IO st 1 e 01 m allows solar energy to be sto V re ol d tag a e s ran w g a e t : e 1 x r 9 i 0 n -2 a 40 r V e o s lt e (- r 1 v 0% o / i + r 6 i % n , 5 c 0 a /6 s 0 e H s z) s V u AC ch or 3 a 0 s -30 th 0 e VD s C e w : ith maximum current 8.4A 5 6 • Water supply is needed at night. • For short periods, the solar energy is insufficient to run the p P2 u [k m W] p. I [A] Outlet size [mm] • There is a 1.50 need for a backu 8 p .9 water source. 32 24 Model CRNF 5-6 Part. No 98415331 MPG WF Price 4,953.00 10 Chapter number 4 Grundfos solar surface pump 1.50 8.9 32 Benefits 1.50 8.9 32 Connected d 1.5 i 0 rectly to the elec 8 t . r 9 onics box on the 50 1.50 8.9 50 MGFlex motor, the level switch will stop the pump CRNF 1-17 CRNF 3-11 CRNF 10-2 CRNF 15-1 98415305 98415330 98415335 98415336 5,692.00 5,077.00 4,885.00 4,814.00 when the water reservoir is full. CRFlex Solar with level switch The CRFlex Solar system allows solar energy to be stored as water in a reservoir in cases such as these: • Water supply is needed at night. • For run Installation short periods, the solar energy the pump. is insufficient to illustration • There is a need for a backup water source. Benefits Connected directly to the electronics box on the MGFlex motor, the level switch will stop the pump when the water reservoir is full. The system also offers these benefits: • easy installation • maintenance confined to periodic cleaning of the solar panels • few and simple components. The system also offers these benefits: • easy installation • maintenance confined to periodic cleaning of the solar panels 5 6 • few and simple components. 24 Note 1. To calculate the number of solar panels required, please use the sizing tools in Grundfos WinCAPS or WebCAPS. 2. The vertical distance between the inlet of the CRFlex pump and the dynamic level of the water source must be less than 6 metres. See also section Minimum 3 inlet pressure, NPSH on page 11. 3. The CRFlex pump must be protected 7 against rain and direct sunlig 8 ht. 1 3 7 8 Optional Extras - List Price Adders 1 • PT100 used to protect pump from over temp, set up with Grundfos GO dongle • Array Kits - see page 10.36 To order, add the additional price to the pump and include a note in "Additional Comments" on Extranet or on your Purchase Order. Fig. 15 CRFlex Solar with level switch Pos. 1 2 3 Description CRFlex pump Solar panels Support structure Delivery lead time colour coding Refer to Key at the bottom of the page Additional product information and handy tips TM05 0323 0613 TM05 0323 0613 Note 4 IO 50 switch box 1. To calculate the number of solar panels required, please use the sizing tools in Grundfos WinCAPS or WebCAPS. 5 Water reservoir 6 Level switch 7 Water pipe 2. The vertical distance between the inlet of the 8 Non-return valve CRFlex pump and the dynamic level of the water source must be less than 6 metres. See also Fig. 15 CRFlex Solar with level switch section Minimum inlet pressure, NPSH on page 11. 3. The CRFlex pump must be protected against rain Australia only - prices effective 3 July 2023 All price P s a o re s i . n AU$ a D nd e a s r c e e r x ip clu t s i i o ve n of GST. Delivery from stock 3-5 days to dispatch 7-10 days to dispatch Contact Grundfos 10.35 and direct sunlight. 1 CRFlex pump Chapter & Page Number 2 Solar panels 3 Support structure 4 IO 50 switch box 5 Water reservoir 6 Level switch 7 Water pipe Lead Time Key 8 Non-return valve Please note that a freight charge applies to all products in this chapter Lead times displayed are a general guide If the lead time is critical, please confirm availability with Grundfos at the time of order For more information, refer to the Terms & Conditions of Sale 14
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