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LD-3000 Description

The Vaporless  LD-3000 series leak detector is a piston-actuated mechanical Line Leak Detector with an integral check valve and pressure relief.  Specific design and metering tolerance match the higher pressure and flow characteristics of three (3) and (5) horsepower submersible pumps.

This leak detector is designed to handle the longer piping systems associated with these submersible pumps.  Certification allows the LD-3000 to be used in up to 700 feet of 3-inch fiberglass pipe.

Before installation is considered complete a 3GPH test must be completed to insure the leak detector is functioning.  Contact factory if problems are encountered during 3 GPH testing.

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LD-3000 Installation

The LD-3000 should be installed directly into the 3-inch discharge port of the submersible pump.  The leak detector will function in any position from horizontal to vertical including upside-down.  As the plumbing diagram shows, a 3-inch ball valve should be installed within 18-inches of the discharge port of the leak detector.  This facilitates start-up, trouble-shooting, diagnostics, and annual test requirements. 

A 3-inch union should be installed between the LD-3000 and the 3-inch ball valve.  This is to facilitate removal of the leak detector housing if it should become necessary.

A “UL Classified” (QLSR) pipe joint sealing compound (for use with petroleum products) should be used on all threads during assembly.

All connections and equipment should be checked for leaks (with pump running) upon completion of installation.

***The LD-3000 leak detector is shipped with the Piston Assembly in the open position.  The leak detection function is disabled for line purging at start-up.***

Read Step (2) of the installation instructions to insure leak detector function

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Step One:

• The first step of installation is to install the 3-inch male inlet of the leak detector into the discharge of the submersible pump (any position including upside-down).  A 90-degree elbow is installed on the 3-inch male discharge of the leak detector then a pipe nipple.  A 3-inch union, a 3-inch pipe nipple, and a 3-inch ball valve should follow.  At this point piping to the dispensing system may be attached.

• With the ball valve in the closed position, start the submersible.  Check installation up to the ball valve for leaks. 

• Open the ball valve, charging the line.  Check the line system for leaks.  Open the nozzle of the nearest dispenser to discharge any air that has accumulated in the line.  Do the same with all nozzles working from the nearest hose to the farthest nozzle.  Upon completion of this procedure, the line should be purged of air and the piping completely pressurized.

Step Two:

• The second step of installation is to remove the hold-down screw from the top of the leak detector.  This screw must be removed to allow the leak detector to detect leaks.

Step Three:

• The third step of installation is to install the vent assembly from the top of the leak detector to the tank test port of the submersible pump.  This consists of copper tubing and compression adaptors to be screwed in the leak detector and the pump with the tubing in between. 

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LD-3000 Testing 

Upon completion of the above procedures, the leak detector must be tested as per LDT-890 Installation & Operation Protocol. 

If a VMI leak detector fails to detect a leak in the line system, please follow the instructions on Adjustment of VMI Leak Detector dated March 28^th, 2005.  This is included with your leak detector or can be located on our website at www.vaporless.com under Technical Bulletins: Technical Bulletin 032805 Adjustment of VMI Leak Detector.