2
Vac Sensor Installation
Attaching Vac Sensor Cables and Tagging Vac Sensor/Vac Float Pairs
2-6
Attaching Vac Sensor Cables and Tagging Vac Sensor/Vac Float Pairs
1. Next get the Vac Sensor cables (with connectors on one end) from the kit(s) and attach the connector of each
cable to each of the Vac Sensor ports labeled TLS (on the Vac Sensor cover). Uncoil each of the Vac Float
cables. Notice that each Vac Sensor, except the one for the tank interstice, has a short piece of tubing
connecting it to a Vac Float beneath it (Figure 2-8). A Vac Sensor/Vac Float tubing connected pair must be
wired together in the junction box.
2. Use a felt pen and write on the top of the Vac Sensor housing to what device each of the Vac Sensors below
will be attached (see Figure 2-9). For example, P = product line, S = containment sump interstice, V = vapor
line, and T = tank interstice. NOTE: If the mark you wrote on the housing over the first Vac Sensor was ‘P’,
locate the cable ends of this Vac Sensor/Vac Float pair, tape them together about every foot along their length
and at their ends, and tag the end of this cable pair ‘P’ or ‘Product Line Vac Sensor’. Repeat this taping and
tagging for each of the Vac Sensor/Vac Float pairs. The Vac Sensor marked ‘T’ will only have one cable, so tag
the end of this cable ‘T’ for ‘Tank Vac Sensor’.
Figure 2-8.- Identifying Vac Sensor/Vac Float Pairs
Installing Vac Sensor Housing onto Support Bracket
Route all of the cables through the opening in the mounting bracket and attach the Vac Sensor housing to the
bracket by pushing the four hooks on the rear of the housing into the four slots in the bracket (see Figure 2-9)
Product
line
Vacuum
input from
STP
Vapor
line
Sump
Tank
