Grundfos ALPHA1 L Instructions Manual
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Grundfos ALPHA1 L Instructions Manual

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GRUNDFOS INSTRUCTIONS
ALPHA1 L
Installation and operating instructions

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Summary of Contents for Grundfos ALPHA1 L

  • Page 1 GRUNDFOS INSTRUCTIONS ALPHA1 L Installation and operating instructions...

  • Page 2: Table Of Contents

    Dismantling the product Dismantling the plug Fault finding the product Deblocking the shaft Technical data 10.1 Dimensions, ALPHA1 L XX-40, XX-60, 15-65 10.2 Dimensions, ALPHA1 L 25-65 Performance curves 11.1 Guide to performance curves 11.2 Curve conditions 11.3 Performance curves, ALPHA1 L XX-40 11.4 Performance curves, ALPHA1 L XX-60...

  • Page 3: Notes

    1.2 Notes 3. Installing the product The symbols and notes below may appear in Grundfos DANGER installation and operating instructions, safety instructions and Electric shock service instructions. Death or serious personal injury - Switch off the power supply before starting any Observe these instructions for explosion-proof work on the product.

  • Page 4: Pump Positions

    Fig. 5 Possible control box positions 3.3.1 Changing the control box position Step Action Illustration Make sure that the inlet and Fig. 3 Tightening the fittings outlet valves are closed. 3.2 Pump positions Unscrew the Always install the pump with a horizontal motor shaft within ± 5 °. screws on the Do not install the pump with a vertical motor shaft.

  • 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

    4. Starting up the product Step Action Illustration 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 Refit the terminal is available at the pump inlet. See section 10.

  • Page 7: Venting The Pump

    The speed can be controlled by a low-voltage PWM (Pulse Width Modulation) signal. High-efficiency ECM (Electronically Commutated Motor) pumps, such as ALPHA1 L, must not be speed-controlled by an external speed controller varying or pulsing the supply voltage. 5.1.1 Model type These installation and operating instructions cover ALPHA1 L.

  • Page 8: Identification

    Crossed-out wheeled bin according to EN 50419 Maximum system pressure Maximum input power [W] Minimum input power [W] ALPHA1 L 25-65 5.4.2 Type key (W) MPa Example ALPHA1 L 25 -40 Min. X.XX Max. X.XX Pump type Nominal diameter (DN) of inlet and outlet ports [mm]...

  • Page 9: Accessories

    5.5.1 Unions and valve kits insulating shells enclose the entire pump housing and are easy to fit around the pump. Product numbers, unions Pump type Product number ALPHA1 L XX-XX 99270706 1 1/4 1 1/4 25-xx G 1 1/2 529921...
  • Page 10 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.

  • Page 11: 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 12: Control Signal

    6.2.3 Constant curve or constant speed, I, II or III Example At constant-curve or constant-speed operation, the pump runs at a constant curve. The pump performance follows the selected performance curve, I, II or III. See fig. where II has been selected.
  • Page 13 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 the PWM signal equals zero (0 VDC), the pump will PWM frequency input with high-speed 100-4000 Hz switch to the control mode selected before connecting to a PWM...

  • Page 14: 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 15: 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. A cycle is five button presses. Display Control mode Constant curve 1...

  • Page 16: Setting The Pwm Input Signal

    2. Detach the terminal cover. 3. Loosen the screws on the power supply plug and disconnect the cable conductors. 4. Pull the power cable back through the cable gland and terminal cover. Fig. 21 Connecting the signal cable to ALPHA1 L...

  • Page 17: Fault Finding The Product

    Replace the pump and Alarm send the pump to the 0/Off The pump stops. nearest Grundfos Service Electrical error. Center. Fig. 22 Fault finding table 9.1 Deblocking the shaft If the pump is blocked it is necessary to deblock the shaft. The...

  • Page 18: Technical Data

    The pump requires no external motor protection. Enclosure class IPX4D Temperature class (TF) TF95 ALPHA1 L XX-40: EEI ≤ 0.20 ALPHA1 L XX-60: EEI ≤ 0.20 Specific EEI values ALPHA1 L XX-65: EEI ≤ 0.20 To avoid condensation in the stator, the liquid temperature must always be higher than the ambient temperature.

  • Page 19: Dimensions, Alpha1 L Xx-40, Xx-60

    10.1 Dimensions, ALPHA1 L XX-40, XX-60, 15-65 Fig. 24 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 20-60 G 1 1/4 ALPHA1 L 25-40...

  • Page 20: Dimensions, Alpha1 L

    10.2 Dimensions, ALPHA1 L 25-65 Fig. 25 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 21: Performance Curves, Alpha1 L

    11.3 Performance curves, ALPHA1 L XX-40 [kPa] Q [m³/h] Q [l/s] Q [m³/h] Fig. 26 ALPHA1 L XX-40 Setting Min. 0.05 Max. 0.26...
  • Page 22 11.4 Performance curves, ALPHA1 L XX-60 [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]...

  • Page 23: Performance Curves, Alpha1 L

    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 24 YETKİLİ GRUNDFOS SERVİSLERİ Telefon İlgili Kişi Firma Adres Cep telefonu Eposta Faks GEBZE ORGANİZE SANAYİ BÖLGESİ. İHSAN 0262 679 79 79 GRUNDFOS POMPA EMRAH ŞİMŞEK DEDE CADDESİ.2.YOL 200.SOKAK.NO:204 0553 259 51 63 KOCAELİ esimsek@grundfos.com GEBZE KOCAELİ 0262 679 79 05 0322 428 50 14 SUNPO ELEKTRİK...
  • Page 25 GRUNDFOS Pumps (Hong Kong) Ltd. Turkey Brazil Norway Unit 1, Ground floor GRUNDFOS POMPA San. ve Tic. Ltd. Sti. BOMBAS GRUNDFOS DO BRASIL Siu Wai Industrial Centre GRUNDFOS Pumper A/S Gebze Organize Sanayi Bölgesi Av. Humberto de Alencar Castelo Branco, 29-33 Wing Hong Street &...
  • Page 26 99253352 01.2021 ECM: 1303117 www.grundfos.com...

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