Little Giant Pump Station has many applications. New technology makes it possible to provide a wide variety of standard pump control functions at a low price. Here’s a sampling of uses for this innovative water pump control:
1. Fully Adjustable “Pressure Switch” with Safety Shutoffs.
Where water needs to be under constant pressure Little Giant Pumps can be used to select the pressure level which turns the pump on (low pressure on) and off (high pressure off). Available standard pressure ranges are 0-25.0 PSI, 0-100 and 0-250 PSI. Pressure settings can be adjusted anywhere within that range. That makes it easy to create a “pressure window” of any size to service virtually any constant pressure pumping installation.
Low pressure safety shutoffs will shut the pump off – and keep it off – until manually reset if the pressure goes below what you define as a “safe” level. Most often the low pressure safety is used to detect a leak or loss of intake water. The pressure must go below this low pressure safety level for at least 30 seconds continuously before it triggers the low pressure safety shutoff.
2. Tank Fill control.
Little Giant Pumps can maintain tank level using floats, probes or by measuring the pressure at the bottom of the tank – down to 0.1 PSI! With tank storage the system pressure (when the pump is off) is determined solely by the elevation of the water in the pipe or tank – not by the amount of water in the system so the tank level can be used start and stop the fill pump. The pressure safety shutoffs are always active so as to shut down the pump if there’s inadequate water from the tank. The Little Giant Pumps control unit can also be configured to “lock out” a pressure pump in case the tank level is too low and needs time to refill and can start and stop the tank fill based on time. Example: Start the tank fill pump every 10 hours and run for two hours.
3. Minimum run timers.
Little Giant Pumps also features minimum run timers…a minimum on timer and a minimum off timer…both independently adjustable. The minimum “on” time and the minimum “off” time is adjustable from 0-240 seconds (4 minutes). If the minimum “on” time is adjusted at 30 seconds when the pump turns on it will stay on for at least 30 seconds even the pressure rises above the high pressure shutoff level. Likewise if the minimum “off” time is adjusted to 30 seconds the pump will stay off for at least 30 seconds after the “high pressure off” function turns the pump off. The safety shutoffs always remain active and will shut off the pump even if the minimum run timer has not timed out.
4. “Suspend” Mode.
With the “suspend” feature it’s possible to turn off the pump so that it does not go into the safety mode – requiring a manual reset. It’s great for water systems that don’t operate under constant pressure. An inexpensive sprinkler pump timer can be used to allow the pump to run at preset times.
5. Hour Meter.
Little Giant Pumps can log up to 9,999 hours of operation and can be reset to zero at any time.
6. Cycle Counters.
Little Giant Pumps keeps track of how many times each pump turns on and off (cycles).
8. Non-Volatile Memory for Data Storage.
Little Giant Pumps features on board non-volatile memory which retains the settings without power for 200+ years. Serial numbers and installation date can also be logged. Little Giant Pumps settings can even be pre-programmed in the office prior to field installation.
9. Reliable and Durable.
Little Giant Pumps employs programming techniques used by life-support systems to ensure reliability.
Little Giant Pumps: Simple and Efficient.
Simple, efficient design: Little Giant Pumps is modular in construction and consists of three (3) major components:
1. The control unit and display that is mounted on the faceplate.
2. Output Relay(s) that switches the high voltage pump starter.
3. Pressure transmitter that senses the pressure.
All components are “plug in” with “keyed” connectors that cannot be hooked up backwards and each component can be replaced in minutes. Little Giant Sprinkler Pumps routinely replaces $10,000 custom control systems for 10-20% of that price. For critical installations customers may purchase a back up unit that can be quickly changed out for near zero down time. Standard power source is a plug-in 120 VAC input “Wall Cube” transformer. A universal internally “hard wired” 85-265 volt AC 50/60 Hz power supply is optional.
