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I y OPERATING v I! Built-in protection The motor incorporates an electronic unit which protects the motor in various situations. G' In case of overload, the built-in overload protection will stop the pump ; for 5 minutes. After that period, the pump will attempt to restart. if the pump is started and the well has not recovered, the pump will stop i after 30 seconds. It theP ump has been stopped as a result of dry running, it will start automatically after 5 minutes. f Resetting the pump: Switch off the electricity supply for 1 minute. The motor is protected against the following conditions: - dry running, - voltage surges (up to 4000 V), t - overvoltage, f - undervoltage, - overload - over-temperature. MS 3 Motors: Note: All MS 3 motors are factory set to detect dry running conditions. However, it is important to ensure that the configurations of both the SQ pump and motor are the same configuration. Configurations can be found on both SQ pump and motor nameplates as"Config" EXAMPLE: Config.A-2, must match the other nameplate A-2. See Technical Data on page 17 for quick referencing on all configurations. MSE 3 Motors: Note: To set Dry-Run limit in the MSEISQE pumps, you need to connect the pump to a CU 300. Refer to CU 300 1&0 for proper connections. To set Dry-Run protection, follow these steps: 1. Start the pump against closed discharge. 2. Rapidly read the power consumption value (W) in the R100 # display 2.5. 3. Multiply this value by 0.9. 4.Within the R100, go to display 4.6 and enter the new value (minimum power limit). 5. Go to display 4.7 and change the setting to"Active". i For further information on dry-running, refer to CU 300 I&O. Maintenance and service: The pumps are normally maintenance-free. Deposits and wear may occur. For that purpose, service kits and service , tools are available from GRUNDFOS.The GRUNDFOS Service Manual is available on request. i The pumps can be serviced at a GRUNDFOS service center. i C