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General Machine Products Co., Inc.
fit the innerduct
clamp
(A)
and
tighten the two
retaining cap
screws
(H)
. Do
not over tighten
the retaining
screws.
10.
For installing
duct tubes, tube
end caps will
need to be fit-
ted, the duct
tubes may also need to be pressurized.
11.
Apply a smear of silicon grease to the edge of the cable / tube
(s) entry point on the junction box base and lid.
12.
The cable blowing machine should be set up ready to install
the new cable/duct-tube(s), (refer to procedure in the cable blow-
ing machine operator and maintenance manual). The cable / duct-
tube(s) must be fed through the short slave length of innerduct
from the cable blowing machine and into the existing innerduct fed
into the Cable Overblowing Junction Box by approx. 6 - 15’ (2 –
5m).
13.
Close the Cable Overblowing Junction Box lid and secure by
tightening all 4 retaining cap screws. Do not over tighten.
14.
The system is now ready to begin installing the new cable /
duct tube(s).
15.
On completion of the installation it may be necessary to re-
move the short length slave innerduct with a duct slitter.
16. DO NOT OPEN THE CABLE OVERBLOWING JUNCTION
BOX WHILE UNDER PRESSURE
.
Always check that the air pressure gauge on the blowing machine
has reduced to zero before opening.
A
B
C
D
E
F
G
G
H
I
EXISTING
DUC
T
BLO
WE
R
