Veeder-Root Red Jacket FXT, Manual

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Introduction Applications
5
When using 117-182 Big-Flo Diaphragm Valve, refer to installation instructions #042-108-1 included
with the valve. When using an FXV model leak detector with adapter housing #038-072-5, refer to
installation instructions #041-415-1 included with the housing. FXV Leak Detectors are for use with
all UL-listed 4-inch Red Jacket models containing a “P” or “AG” prefix; FE Petro UL-listed 4-inch
“STP” models; Tokheim UL-listed 4-inch models — 585A-34 and 585A-150.
WARNING! Tampering with the screws or seals on this leak detector may inhibit operation and will
void warranty.
DO NOT wire submersible pumps to run continuously. Red Jacket line leak detectors will not perform
leak tests on pumping systems that run continuously.
NOTICE! ALL AIR MUST BE OUT OF THE SYSTEM FOR THE LEAK DETECTOR TO WORK PROPERLY.
Before installing leak detector in the pump, fill the system with product by running the pump and
delivering product from each dispenser (starting with the farthest from the pump and working to the
pump) until all air is removed from system.
Certain regulatory bodies require that leak detectors remain in the system after the lines have been installed. The
lines may be purged of air by back-pressuring the lines with an inert gas, such as helium or nitrogen, to a pressure
of 25 psi (172 kPa). This may be done at the impact valve under the dispenser. When this pressure has been
reached, the leak detector will be in the open position. By turning on the pump and gradually bleeding the gas from
the line through a valve at the impact valve of the farthest dispenser, the line may be purged of air.
Applications
Static Head Pressure on Mechanical Leak Detector
The FX Leak Detector is designed to operate when installed into systems which impose a static head on 11
(eleven) feet or less.
When installing a mechanical leak detector in an underground submersible pumping system, the installer must be
aware of the static head that will be placed on the leak detector when in operation (see ‘A’ in Figure 1). The static
discharge head is the vertical elevation from the leak detector body to the point of free discharge.
Figure 1. Static head
‘A’
106-7.ep s