Protection Relays Motor and Pump Protection 234-P Single-Phase Pump Monitor Description The PumpSaver Plus Model 234-P protects single-phase pumps from dry-well, dead-head, rapid-cycle, jammed-impeller, and over/undervoltage conditions. Typical applications include residential waterwells, commercial waterwells, irrigation wells, and golf course and other sprinkler systems. The Model 234-P is designed to be mounted inside a Grundfos* control box to protect /33 hp, 2- or 3-wire, 230 V pumps. An infrared LED communicates directly with a hand-held diagnostic tool called the Informer (sold separately). Features & Benefits Wiring Diagram FEATURES BENEFITS 234-P CONNECTIONS IN GRUNDFOS* CONTROL BOX Proprietary Constant monitoring of voltage and current protects microcontroller pumps from dry-well, dead-head, jammed impeller, based circuitry rapid cycling, and voltage faults Allows user to adjust the current sensitivity for the IR Onboard sensitivity LINK RESTART DELAY/ dry-well / dead-head trip point from 70 % - 90 % of adjustment + the full load. Allows user to select well recovery time delay after a Adjustable restart delay dry-well condition occurs, or to select manual reset 1.5 to 3hp at 230VAC Used with the Informer, allows user to see stored Built in IR faults, run time, and also troubleshoot the pump while communications link its running BLUE LED indication Provides status and diagnostics for troubleshooting BLK YELLOW Accessories ORANGE START CAPACITOR Informer BLACK A hand-held diagnostic tool that uses an infrared receiver to access information which can be RELAY RUN helpful for troubleshooting the system. Includes CAPACITOR the Informer IR Kit-12 Informer IR Kit-12 YELLOW RED BLACK 12 infrared adapter cable attaches to the face of SW L1 L2 YEL RED BLK the unit to provide remote diagnostics without opening the panel. Included with the Informer For installation instructions see the Fresh Water Pumping Catalog. 2019 Littelfuse, Inc. Rev: 2-C-042619 www.littelfuse.com/234pProtection Relays Motor and Pump Protection 234-P Input Characteristics Specifications Supply Voltage 230 V ac Functional Specifications Load Range 3 3 hp Adjustments/Settings Frequency 50/60 Hz Overcurrent 125 % of calibration point (Note: 50 Hz will increase all delay timers by 20 %) Underload (dry-well) Adjustable (70 - 90 % of calibrated run power) Output Characteristics Overvoltage 265 V ac Output Contact Rating (SPST) 3 hp 240 V ac (17 A max.) Undervoltage 190 V ac General Characteristics Number of restarts allowed Operating Temperature -40 C to 70 C (-40 F to 158 F) in a 60-second period Maximum Input Power 5 W (max.) (rapid-cycling) 4 Dimensions Fitted to Grundfos* Control Box Trip Delay Times Weight 14 oz. Overcurrent 5 seconds Mounting Methods Grundfos* Control Box Dry-well 4 seconds Standards Passed Restart Delay Times Electrostatic Discharge (ESD) IEC 61000-4-2, Level 2, 4 kV contact, 6 kV air Over/undervoltage 2 seconds All other faults (dry-well *Grundfos is a trademark of its respective owner. recovery timer) Manual, 2-225 minutes 2019 Littelfuse, Inc. Rev: 2-C-042619 www.littelfuse.com/234p