General Machine Products 89066 1 1/4" SDR Cable Overblowing Junction Box - Manual (Page 8)

Page 8 of 12 General Machine Products Co., Inc.
duct, to assist
the incoming
cable / duct it
may be benefi-
cial to cut part of
the end of the
innerduct end to
fit around the
existing cable,
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 fitted,
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 blow-
ing machine has reduced to zero before opening.
A
B
C
D
E
F
G
G
H
I
EXIS
TING
DUC
T
BLO
W
ER