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Dec 21 10 08:57a MVP Petroleum En ' Bering <br />916 4-1117 p.3 <br />Interstitial !squid Sensor installation Guide ktstalling Boat SWfch <br />Installing Float Swatch <br />To ensure proper operation of the float switch, it is important that the switch rests as close as possible to the bottom of <br />the tank annulus. <br />1. Lower the float switch assembly into the riser pipe until the float touches the bottom of the tank (sec Figure 1). <br />2. Keeping the cable taut, secure the sensor assembly in place by attaching a grip cord. Note: The float switch assembly <br />should not be suspended by the cable, but should rest lightly on the bottom of the tank. <br />3. Secure the riser cap to the riser pipe. <br />4. Tighten the cable bushing nuts on the riser cap and junction box to ensure a water -tight seal at the cable entry. <br />Weatherproof junction box with <br />\ <br />14" min. dia. manhole r1i2-inch N.P.T. threads (16 Cubic � each volume minimum) <br />�- - Cord grips <br />a . p �1 'o• a . > <br />a <br />112° to 2' <br />Reducer Seal -off <br />2" dia. riser <br />Sensor <br />Sensor switch <br />�. C,1OWsLePS <br />Steel tank <br />Sensor Switch must <br />rest on bottom of tank <br />Figure 1. Sensor Dlintenstons and Installation Requirements -Steel Tank <br />5 <br />