ADS Environmental Services Model 3600 530002 A2 - Manual (Page 83)

Monitor Installation and Activation 5-9
through conduit since it is not direct burial cable. To install this cable, refer to
Installing the Communication Cable Using Conduit on page 5-10.
However, when installing the communication cable between the DAA and the QS3601
monitor, ADS does not require running the cable through conduit because the cable
used in this application is direct burial cable. To install this cable directly in the
ground, refer to Installing the Communication Cable Directly in the Ground on page
5-11.
Use the following procedure to install the communication cable in the manhole.
z Dig the trench to the manhole and widen the trench enough to accommodate
the drill. If conduit is used for the communication cable, place it so that it
drains toward the pavement box.
z Drill the hole from outside the manhole straight into the manhole, at the very
bottom of the trench.
Y
Drill the hole so that the conduit exiting the manhole wall lies on the very
bottom of the trench. This position decreases the chance that damage will
occur at the junction of the conduit and cable while back-filling and tamping
the trench.
Note: When using PVC primer and PVC glue, carefully follow the safety
instructions on the labels to avoid injury.
z Prepare the conduit and fittings.
Y
Apply Noalox® compound to all threaded conduit junctions.
Y
Attach the 13 mm (0.5 in.) capped elbow to the nipple that will pass
through the manhole wall.
Y
Tighten firmly. Over-tightening will crack the elbow casing.
Y
Attach a 13 mm
×
25 mm (0.5 in.
×
1 in.) nipple to the elbow, then attach
the seal-off fitting (XP fitting).
Y
Orient the close-up plug to so that it faces away from the nipple that will go
through the manhole wall.
Y
Attach another 13 mm
×
25 mm (0.5 in.
×
1 in.) nipple to the bottom of the
seal-off fitting. Then, screw on a 13 mm (0.5 in.) plastic bushing.
z Apply regular electrician's tape to the threaded portion of the nipple. Pass the
nipple through the hole in the manhole wall. The elbow should be flush with
the inside manhole wall and pointing straight down. Use wedges to hold the
assembly in position.
z Using gasoline or alcohol, remove all grease and Noalox from the conduit near
the manhole walls.
z Moisten the concrete blocks or bricks around the conduit.