Figure 3 shows an example of an installation with CU 300 as an alarm unit. 3 CU 300 functions as an alarm unit for the pump. Furthermore, you can communicate with the pump via the remote control Grundfos GO, see also section 14. CU 300 with Grundfos GO. Warning Before starting any work on CU 300, make sure that the power supply has. Controller, CU 352. The primary job of the CU 352 is to control how many pumps should be in operation at any given time, as well as control the speed of the individual pump. The advanced controller optimises the performance of the booster system and thereby minimises energy costs. CU 352 Controller The CU 352 controller controls up to six.
Question: What do the colored lights on the Magna refer to?
Grundfos Cu 352 Controller Manual
Answer: Each color and rotation provides status information at a quick glance. It is helpful especially helpful when the pumps are in ceilings. Aside from the Magna series, this feature is now on the newly expanding ECM pumps up to 15 HP such as the CRE, CRE-DP, VLSE and CMBE series. Below is the reference Grundfos “eye chart” that explains specifically what each display means:
Grundfos Cu301 Troubleshooting
Keep in mind that when the eye is yellow it is a important “warning” and the pump will continue to run. However, the cause needs to be addressed with a sense of urgency. If it turns red, game over because it stops dead. For more info on Magna fault codes, go to the Magna 3 FAQ section for the most common errors and fixes at https://pumphvac.com/magna-3-faqs/