2-7
2
Vac Sensor Installation
Vacuum Connections within Containment Sump
Figure 2-9.- Attaching Vac Sensor Housing To Support Bracket
Vacuum Connections within Containment Sump
VACUUM CONNECTIONS TO A DOUBLE-WALL PRODUCT LINE
1. Get a 1/4” NPT/ barbed adapter and spring clamp from the Vac Sensor install kit.
2. Apply an adequate amount of fresh, UL classified for petroleum, non-setting thread sealant (herein after
referred to as sealant) to the threads of the 1/4” NPT barbed fitting and screw it into the 1/4” NPT port in the
vacuum termination fitting of the product line (Figure 2-10).
In some installations, the double-walled piping is equipped with one or more Schrader
valves. You can connect the vacuum tubing directly to the Schrader valve using the Schrader
fitting (P/N 576008-672 for North American installations; P/N 576008-504 for EU installa-
tions). Any unused Schrader fittings must be capped to avoid leaks.
3. Get the 1/4” ID tubing from the install kit and measure a piece that will reach the barbed fitting on the bottom
of the plastic valve (see Figure 2-4) that is connected to the Vac Sensor/Vac Float pair you labeled ‘P’. Plan
enough tubing so that it isn’t stretched between fittings or have any sharp bends/kinks in it. Cut and install this
tubing and secure tubing ends with spring clamps.
VACUUM CONNECTIONS TO A DOUBLE-WALL VAPOR RETURN LINE
Repeat steps 1 - 2 of the Product Line connection instructions for the vapor return line connection, except:
•
Install the 1/4” NPT barbed fitting in the vacuum termination port of the vapor return line (see Figure 2-10),
•
Connect one end of the tubing to the vapor return line barbed adapter and the other end to the barbed fitting on
the bottom of the plastic valve that is connected to the Vac Sensor/Vac Float pair you labeled ‘V’. Plan enough
tubing so that it isn’t stretched between fittings or have any sharp bends/kinks in it. Cut and install this tubing
and secure tubing ends with spring clamps.
STP Riser
Vac Sensor housing
support bracket
Route cables through
opening in back of
bracket
Vac Sensor housing
Vac sensor device
connection guide
(use felt pen)
NOTICE
