General Machine Products 89300 AirStream Cable Blowing Machine - Manual (Page 16)

Page 16 of 44
Set up for installing cable with the machine mounted below ground:
The set up is similar to the set up for installing cable above ground, (described above) typically this type of
installation is demanded for “series blowing” i.e. when a length of cable is already installed, and the limit of
installation distance is reached. In such cases it is customary to couple a “series machine” sited down a
manhole some distance from the point of main installation. This machine operates in conjunction with the
machine sited at the main point of installation. The GMP Airstream machine is ideally suited to this type of
operation, it may be coupled with a second machine to increase the distance a single cable can be installed
without joins. The only difference between this set up, and the set up for installing cable with the machine
above ground, is that there will be no drum stand carrying the cable drum. The cable will be exiting from one
side of the manhole and blown into the tube at the other side of the manhole. The machine should be aligned
with both the incoming cable and the outgoing tube path, both side to side and up and down.
NOTE: THE MACHINE MUST NOT BE SUBMERGED IN WATER.
If the hole is full of water it must be pumped out before placing the machine on the bottom of the hole.