ADS Environmental Services FlowAlert QR 775011 A2 - Manual (Page 155)

Monitor Installation 6-3
Mounting the Monitor to the Manhole
Wall
Mount the monitor to the manhole wall in the following way:
1. Determine the appropriate location to mount the monitor
handle (i.e., bracket) (ADS p/n I40-0003/9) to the manhole
wall. This mounting bracket will connect to the welded flange
on the monitor housing. Consider the following when selecting
the proper location:
 Select a location that will allow you to remove the monitor
easily during service visits using the mounting bracket.
 Select a location that provides only a minimal potential for
the monitor to experience surcharge conditions.
 Select a location that will prevent the manhole lid from
potentially damaging the monitor during removal or when
rotating in the opening.
 Select a location that will allow personnel to enter/exit the
manhole without removing the monitor.
2. Hold the top end of the mounting bracket against the manhole
wall, and mark the location for the mounting hole through the
keyhole in the bracket.
3. Drill a hole 2½ inches deep at the mark, and install a 3/8-inch x
3-inch anchor bolt in the hole.
Note: Make sure all anchor bolts, studs, nuts, and
washers used in mounting the monitor are stainless steel.
4. Twist a nut onto the anchor bolt, but do not tighten it down.
Leave enough space between the nut and the wall for the
thickness of the mounting bracket.
5. Mount the bottom of the bracket onto the monitor flange with
two 3/8-inch x 1-inch hex bolts, 3/8 – 16 hex nuts, and 3/8-inch
washers.