50 / 60 (50 will increase all delay timers by 20%)
Input Load Range (hp)
37624
Output Form
SPST
Output Load Rating (VA)
3 hp @ 240 Vac (17 A max.)
Rapid Cycle Timer (s)
4 restarts allowed in 60 s period
Restart Delay Range
Over/Under Voltage: 2 s; All other faults: Manual; 2 - 225 m
Trip Delay Range
Overcurrent: 5 s; Dry-well: 4 s
Overvoltage Trip Voltage (%)
265 Vac
Undervoltage Reset Voltage (%)
190 Vac
Overcurrent Trip Class
125% of calibration point
Underload (%)
Adjustable (70 to 90% of calibrated run power)
Power Consumption
?5 W
Mounting Method
Inside a Grundfos® control box
Operating Temperature
-40° to 70°C (-40° to 158°F)
Series Features
34-P Series - Single-Phase Pump Monitor
Series Description:The PumpSaver® Plus Model 234-P protects single-phase pumps from dry-well, dead-head, rapid-cycle, jammed impellers, and over/undervoltage conditions. Typical applications include residential waterwells, commercial waterwells, irrigation wells, golf courses, and other sprinkler systems. The Model 234-P is designed to be mounted inside a Grundfos* control box** to protect 1?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).
Series Operation:A calibration adjustment allows the 234-P to be calibrated to your specific pumping applications, reducing the possibility of false or nuisance tripping. A unique microcontroller-based voltage and current-sensing circuit constantly monitors the incoming power for fluctuations, overcurrent, and undercurrent. When an abnormality such as loss of suction is detected, the 234-P deactivates its output relay and directly disconnects the pump motor. The 234-P then begins its user-selectable restart delay (dry-well recovery) timer. When the timer counts to zero or power is removed and reapplied, the 234-P reactivates its output relay and turns the pump back on. By leaving the restart delay knob in the reset position, the 234-P will operate in manual reset mode.
The Informer displays parameters including calibration points, trip points, run time and last faults. An IR Kit-12 (12 fiber optic kit) allows the Informer to access these parameters even when the 234-P is enclosed in a control box. This is valuable for troubleshooting the pump while it is running.
Series Applications:Residential waterwells, Commercial waterwells, Irrigation wells, Golf courses
Proprietary microcontroller-based circuitry: Constant monitoring of voltage and current protects pumps from fault conditions
Onboard sensitivity adjustment: Allows user to adjust the current sensitivity for the dry-well/dead- head trip point from 70 %90 % of the full load
Adjustable restart delay: Allows user to select well recovery time delay after a dry-well condition occurs, or to select manual reset
Built-in IR communications link: Used with the Informer, allows user to see stored faults, run time, and also troubleshoot the pump while its running
LED indication: Provides status and diagnostics for troubleshooting
