Line Interface Module (LIM)

The LIM is an external device that controls submersible turbine pumps (STP) and monitors the input/output status of fuel dispenser hook signals and STP relays.

Usually, the dispenser sends a “hook signal” to the submersible pump controller. The LIM intercepts this hook signal and communicates with the console. The LIM sends a signal to the STP controller to turn the submersible pump ON (unless an alarm condition is sensed, then no signal is sent). A high-voltage feedback signal will make sure that the submersible pump is turned ON.

The LIM operates with the console to do a test of the lines during periods of inactivity to constantly monitor the site for leaks in the line(s).

• You can install a maximum of two (2) LIM modules in a system. Each LIM module can monitor up to four (4) STP motors for a total of eight (8) STP motors.
• For manifold tank installations, when one (1) Pressurized Line Leak Detector (PLLD) sensor is installed, the system must use one (1) LIM position for each STP pump.

Part Number: FM20-8321-LIM