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Summary of Contents for Grundfos ALPHA1 L Series
- Page 1 GRUNDFOS INSTRUCTIONS ALPHA1 L Installation and operating instructions...
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Page 2: Table Of Contents
The hazard statements are structured in the following way: Pump performance Setting the product 1.2 Notes Setting the PWM input signal The symbols and notes below may appear in Grundfos Servicing the product installation and operating instructions, safety instructions and Dismantling the product service instructions. -
Page 3: Receiving The Product
2. Receiving the product 3.1 Mechanical installation 2.1 Inspecting the product The mechanical installation must be carried out by CAUTION trained persons in accordance with local regulations. Crushing of feet Minor or moderate personal injury 3.1.1 Mounting the product - Wear safety shoes when opening the box and 1. -
Page 4: Pump Positions
3.2 Pump positions 3.3.1 Changing the control box position Always install the pump with a horizontal motor shaft within ± 5 °. Step Action Illustration Do not install the pump with a vertical motor shaft. See fig. 4, bottom row. Make sure that •... -
Page 5: Electrical Connection
3.4 Electrical connection 3.4.1 Assembling the installer plug DANGER Step Action Illustration Electric shock Death or serious personal injury - All electrical connections must be carried out by a Loosen the cable qualified electrician in accordance with local gland and regulations. -
Page 6: Insulating The Pump Housing
3.5 Insulating the pump housing Step Action Illustration Refit the terminal cover. See A. Note: It is possible to turn the power supply plug on the side for a 90 ° cable entry. See Fig. 6 Insulating the pump housing Tighten the union You can reduce the heat loss from the pump and pipe by nut. -
Page 7: Starting Up The Product
4. Starting up the product 4.3 Venting the pump 4.1 Before startup Do not start the pump until the system has been filled with liquid and vented. Make sure that the required minimum inlet pressure is available at the pump inlet. See section 10. -
Page 8: Product Introduction
5. Product introduction 5.1 Product description ALPHA1 L can be used as stand-alone or integrated circulator pump in existing systems as replacement or in new systems with either variable or constant flow rate. 5.1.1 Model type These installation and operating instructions cover ALPHA1 L. The model type is stated on the packaging and nameplate. -
Page 9: Identification
Maximum head [dm] <XXW GFNXX L.avg. [ ]: Cast-iron pump housing Model:XXXXXX X Min.XX°C P/N:XXXXXXXX PC:P1XXXX N: Stainless-steel pump housing S/N:XXXXXXXX Grundfos Holding A/S Port-to-port length [mm] DK-8850 Bjerringbro Made in XXXXXXX D en m a rk Fig. 8 Nameplate... -
Page 10: Accessories
5.5 Accessories 5.5.1 Unions and valve kits Product numbers, unions ∅22 ∅28 ∅15 ∅18 ∅22 ∅28 ∅42 1 1/4 1 1/4 1 1/4 25-xx 529921 529922 529821 529925 529924 G 1 1/2 25-xx N 529971 529972 519805 519806 519807 519808 519809 529977 529978 529979... - Page 11 5.5.3 Cables and plugs The pump has two electrical connections: the power supply and the control signal connection. Power supply connection The installer plug is both supplied with the pump and available as an accessory. Power cable adapters are also available as accessories. Control signal connection The control signal cable connection has three conductors: the signal input, the signal output and the signal reference.
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Page 12: Control Functions
6. Control functions 6.2 Control modes The pump has seven different control modes. Learn more about 6.1 Operating panel them in the following sections. 6.2.1 Radiator heating mode (factory setting) The radiator heating mode adjusts the pumps performance to the actual heat demand in the system following a proportional-pressure curve. -
Page 13: Control Signal
6.2.3 Constant curve or constant speed, I, II or III 6.3 Control signal At constant-curve or constant-speed operation, the pump runs at The pump can be controlled via a digital low-voltage pulse-width a constant curve. The pump performance follows the selected modulation (PWM) signal. - Page 14 6.3.2 PWM input signal profile A (heating) Data The pump runs on constant-speed curves depending on the PWM Maximum rating Symbol Value input signal. The speed decreases when the PWM value increases. If PWM equals 0, the pump runs at maximum speed. PWM frequency input with high-speed 100-4000 Hz optocoupler...
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Page 15: Pump Performance
6.4 Pump performance Figure shows the relation between pump setting and pump performance by means of curves. Fig. 19 Pump setting in relation to pump performance Setting Pump curve Function Constant curve or constant The pump runs at a constant speed and consequently on a constant curve. speed I At speed I, the pump is set to run on the minimum curve under all operating conditions. -
Page 16: Setting The Product
7. Setting the product To set the product use the button on the operating panel. Every time you press the button, the pump setting is changed. The LEDs will indicate the chosen control mode. See fig. 20. A cycle is five button presses. The pump automatically enables the PWM input-signal control mode when the signal cable is plugged in and the PWM signal is detected by the pump. -
Page 17: Setting The Pwm Input Signal
7.1 Setting the PWM input signal 8. Servicing the product To enable the external control mode (PWM profile A), you need a DANGER signal cable connected to an external system. The cable Electric shock connection has three conductors: the signal input, the signal output and the signal reference. -
Page 18: Fault Finding The Product
The supply voltage supply to the pump. <160 V is low. 1/On Replace the pump and Alarm send the pump to the 0/Off The pump stops. nearest Grundfos Electrical error. Service Center. Fig. 23 Fault finding table... -
Page 19: Deblocking The Shaft
9.1 Deblocking the shaft If the pump is blocked it is necessary to deblock the shaft. The pump deblocking device is accessible from the front of the pump without having to demount the control box. The force of the device is high enough to deblock pumps, which are seized by lime, for example if the pump has been turned off during summer. -
Page 20: Technical Data
10. Technical data Operating conditions Sound pressure level The sound pressure level of the pump is lower than 43 dB(A). Relative humidity Maximum 95 %, non-condensing environment System pressure PN 10: Maximum 1.0 MPa (10 bar) Liquid temperature Minimum inlet pressure Inlet pressure 75 °C 0.005 MPa (0.05 bar), 0.5 m head... -
Page 21: Dimensions, Alpha1 L Xx-40, Xx-60
10.1 Dimensions, ALPHA1 L XX-40, XX-60, 15-65 Fig. 25 ALPHA1 L XX-40, XX-60, 15-65 Dimensions [mm] Pump type ALPHA1 L 15-40 ALPHA1 L 15-60 ALPHA1 L 15-65 ALPHA1 L 20-40 G 1 1/4 ALPHA1 L 20-40 N G 1 1/4 ALPHA1 L 20-60 G 1 1/4 ALPHA1 L 20-60 N... -
Page 22: Dimensions, Alpha1 L
10.2 Dimensions, ALPHA1 L 25-65 Fig. 26 ALPHA1 L 25-65 Dimensions [mm] Pump type ALPHA1 L 25-65 G 1 1/2 11. Performance curves 11.1 Guide to performance curves Each pump has its own performance curve. A power curve, P1, belongs to each performance curve. The power curve shows the pump power consumption in watt at a given performance. -
Page 23: Performance Curves, Alpha1 L Xx-40 (N)
11.3 Performance curves, ALPHA1 L XX-40 (N) [kPa] Q [m³/h] Q [l/s] Q [m³/h] Fig. 27 ALPHA1 L XX-40 Setting Min. 0.05 Max. 0.26... -
Page 24: Performance Curves, Alpha1 L Xx-60 (N)
11.4 Performance curves, ALPHA1 L XX-60 (N) [kPa] 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 Q [m³/h] Q [l/s] 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 Q [m³/h] Fig. -
Page 25: Performance Curves, Alpha1 L Xx-65 (N)
This product or parts of it must be disposed of in an environmentally sound way: 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. The crossed-out wheelie bin symbol on a product means that it must be disposed of separately from household waste. - Page 26 Appendix WEEE Directive The crossed-out wheelie bin symbol on a product means that Зачеркнатият символ на кофа за отпадъци върху it must be disposed of separately from household waste. продукта означава, че той трябва да бъде изхвърлен When a product marked with this symbol reaches its end of отделно...
- Page 27 Ant produkto esantis perbraukto šiukšlių konteinerio simbolis nurodo, kad produktą draudžiama išmesti su buitinėmis 가위표가 표시된 바퀴 달린 쓰레기통 기호는 제품을 가정용 폐기물과 별도로 atliekomis. Kai šiuo simboliu pažymėtas produktas 폐기해야 한다는 것을 뜻합니다 . 이 기호가 표시된 제품의 수명이 종료되면 , 현지 폐기물...
- Page 28 Biểu tượng thùng rác bánh xe bị gạch chéo trên một sản 產品上打叉的帶輪垃圾桶符號表示此產品必須與家庭廢棄物分 phẩm có nghĩa là nó phải được vứt bỏ tách riêng với rác sinh 開丟棄。 標示此符號的產品在使用壽命結束時，請將此產品送 hoạt. Khi có sản phẩm được đánh dấu biểu tượng này đến 到當地廢棄物處理主管機關指定的收集站。...
- Page 29 GRUNDFOS Pumps (Hong Kong) Ltd. Turkey Norway BOMBAS GRUNDFOS DO BRASIL Unit 1, Ground floor GRUNDFOS POMPA San. ve Tic. Ltd. Sti. Av. Humberto de Alencar Castelo Branco, Siu Wai Industrial Centre GRUNDFOS Pumper A/S Gebze Organize Sanayi Bölgesi 29-33 Wing Hong Street &...
- Page 30 99253352 0419 ECM: 1259256 www.grundfos.com...
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