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 1⁄3–3 hp, 2- or 3-wire, 230 V pumps. An infrared LED communicates directly with a hand-held diagnostic

tool called the Informer (sold separately).

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.

NOTE: The PumpSaver® models have a sensitivity adjustment for the dry-well trip point. After calibration is done, you can adjust the sensitivity for the dry-well/dead-head trip point

from 70 - 90 of the full load. This makes the unit even more adaptable to varying pumping applications. If you have a very low producing well, increase the sensitivity closer to the

90 mark, or if you have a very heavy producing well, decrease the sensitivity around the 70 mark.

* Grundfos is a trademark of its respective owner.

**The Model 234-P is not recommended for use with the Grundfos Deluxe Control Box.

FEATURES BENEFITS

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/deadhead

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 it’s running

LED indication Provides status and diagnostics for troubleshooting

234-P属于工业自动化与控制 > 监控器 - 继电器输出。力特公司制造生产的234-P监控器 - 继电器输出继电器输出监控器检测工业继电器的异常输出，并触发逻辑输出或触头组。常见的检测类型包括：AC 和 DC 电流或电压、电压不对称、接地故障、温度监控、缺相，以及相位序列或不平衡。这些器件可根据跳闸范围、延迟时间、供电电压、安装类型和开关电路进行选择。