Grundfos CU 241 Installation And Operating Instructions Manual

Grundfos CU 241 Installation And Operating Instructions Manual

Dual pump unit
Table of Contents

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GRUNDFOS INSTRUCTIONS
CU 241
Dual pump unit
Installation and operating instructions

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Table of Contents
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Summary of Contents for Grundfos CU 241

  • Page 1 GRUNDFOS INSTRUCTIONS CU 241 Dual pump unit Installation and operating instructions...
  • Page 3 CU 241 English (GB) Installation and operating instructions ............5 Български...
  • Page 4 ..............599 CU 241...
  • Page 5: Table Of Contents

    Setting the maximum number of restarts with Grundfos GO Remote .......
  • Page 6: General Information

    Read this document before you install the product. Installation and operation must comply with local regulations and accepted codes of good practice. 1.1 Hazard statements The symbols and hazard statements below may appear in Grundfos installation and operating instructions, safety instructions and service instructions. DANGER Indicates a hazardous situation which, if not avoided, will result in death or serious personal injury.
  • Page 7: Mechanical Installation

    • Place the product in a flood-safe place. • Make sure that the ambient temperature is within the limits. • Install the product as close as possible to the connected pumps, sensors, and accessories. • The product must be protected from direct sunlight. •...
  • Page 8 Remove the screw in the back cover of the CU product. Remove the back cover. Break off the tap.
  • Page 9 Fit the CIM module.
  • Page 10 If supplied, place the labels on the back cover. CIM XXX Type: Kit Funct. module - Geni/RS485Op Prod. No. 96824795 P. C. 0538 Version Serial No. 9854 Refit the back cover to the CU product and secure it with the mounting screw. Secure cables using the cable tie holders.
  • Page 11: Electrical Connection

    6.22 Starting the startup wizard with the operating panel 3.4 How to enable Bluetooth on the operating panel If the Bluetooth signal on the operating panel has been disabled for some reason, you are not able to connect with Grundfos GO Remote. You must enable Bluetooth first.
  • Page 12: How To Disable Bluetooth On The Operating Panel

    An alarm is indicated in case of for example high-water level in the tank or sensor failure. Basic settings are configured via the operating panel and advanced settings are configured with Grundfos GO Remote. Furthermore, you can read important operating parameters with Grundfos GO Remote.
  • Page 13 Empty Pos. Description High level Start level P2: start level for pump 2 Start level P1: start level for pump 1 Stop level Dry-running level The pump will start to empty the tank or pit when Start level P1 is reached. A second pump will start if the liquid level reaches Start level P2.
  • Page 14: Terminals

    Serial number Enclosure class Max. ambient temperature Max. power consumption Factory code Markings and approvals Production site Supply voltage Version number Product name 4.6.2 Type key Example CU 241 Pos. Pos. Description Type • CU 241 Number of pumps supported...
  • Page 15: Supported Communication Interface Modules And Protocols

    • Press these buttons to navigate between submenus or change the value settings. OK button: • Press this button to save changed values. Connect button: • Press this button to connect the control unit to Grundfos GO Remote via Bluetooth.
  • Page 16: Setting The Product

    6. Setting the product Make sure that all settings are entered according to the pump and system requirements to avoid malfunction. 6.1 Setting the application type with Grundfos GO Remote Go to Settings > Level control > Application type. Select the type.
  • Page 17: Setting The Stop Level

    The settings have now been stored. 6.4 Setting the stop level 6.4.1 Setting the stop level with Grundfos GO Remote The settings apply to analog sensors. For digital sensors, the setting is automatically activated. The stop level is the same for pump 1 and pump 2.
  • Page 18: Stop Delay

    The stop delay is the time from when the stop level is reached until the pump stops. The stop delay prevents the pump from starting and stopping too frequently and reduces water hammer in long pipes. 6.6.1 Setting the stop delay with Grundfos GO Remote Select Settings > Level control > Stop delay > State Select Stop delay time.
  • Page 19: Antiseizing

    6.14 Setting the service interval with Grundfos GO Remote You can set a time in Grundfos GO Remote in order to get a reminder that the pump needs service when the time comes. Go to Settings > Service > State Select Enable and press OK.
  • Page 20: Alarm Reset

    6.18 Setting units for Grundfos GO Remote Changing units as described here will only change the units shown in Grundfos GO Remote. It will not affect the units shown on the operating panel of products connected to Grundfos GO Remote.
  • Page 21: Setting Units For The Operating Panel With Grundfos Go Remote

    6.19 Setting units for the operating panel with Grundfos GO Remote Changing units as described below changes the units shown in the operating panel of the product connected to Grundfos GO Remote. It does not affect the units shown in Grundfos GO Remote.
  • Page 22: Starting The Startup Wizard With The Operating Panel

    3.3 Startup wizard on the operating panel 7. Operating the product 7.1 Manual operation 7.1.1 Starting and stopping the pump manually with Grundfos GO Remote Go to Settings > Control, pump 1 or Control, pump 2. Start the pump by selecting On and pressing OK.
  • Page 23: Servicing The Product

    ‐ Make sure that the power supply cannot be switched on accidentally. Remember to save the controller's settings in Grundfos GO Remote under Settings. The settings can then be transferred to the new control unit when installed. Switch off the power supply to the product and other components with external supply.
  • Page 24: Fault Finding The Product

    • The alarm symbol on the display turns red and the pump stops. • Alarm code Too many motor restarts is displayed in Grundfos GO Remote. Cause The pump has been blocked or partly blocked causing overload in the motor.
  • Page 25: Code 12 (Service Needed)

    Contact Grundfos or an authorised service workshop. • In order for the product to determine the service time, you must have enabled the service countdown with Grundfos GO Remote: Settings > Service 9.6 Code 22 (Moisture in motor of pump) •...
  • Page 26: Code 84 (Memory Storage Media Faulty)

    The signal from the sensor is out of the configured range. Remedy • Go to Settings > Level Control in Grundfos GO Remote and ensure that the configured range corresponds to the physical application type. • Change the sensor, if needed.
  • Page 27: Code 225 (Communication Error Pump Module)

    Maximum power dissipation 99347488 3.4 W Enclosure class IP54, 3R for CU 241 built into panel of similar or higher enclosure class. GENIbus terminal - 7 VDC to + 12 VDC. Nominal current condition: 4 mADC. Short-circuit current condition: 328 mA.
  • Page 28: Disposing Of The Product

    Use the public or private waste collection service. If this is not possible, contact the nearest Grundfos company or service workshop. Dispose of the waste battery through the national collective schemes. If in doubt, contact your local Grundfos company. See also end-of-life information at www.grundfos.com/product-recycling.
  • Page 29 Tel.: +387 33 592 480 Centre Turkey Fax: +387 33 590 465 29-33 Wing Hong Street & 68 King Lam GRUNDFOS Pumper A/S GRUNDFOS POMPA San. ve Tic. Ltd. Sti. www.ba.grundfos.com Street, Cheung Sha Wan Strømsveien 344 Gebze Organize Sanayi Bölgesi E-mail: grundfos@bih.net.ba...
  • Page 30 99506145 0119 ECM: 1239476...

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