Condux Deluxe Blower - Manual (Page 12)

12
Cable Crash Test
Cable Crash Testing is a very quick and easy step to be completed before attempting
the installation of cable with the Deluxe Blower. This test is necessary to set the
hydraulic motor pressure of the blower
below the point that it may cause cable
damage as a result of over pushing or encountering an obstruction in the
sub-duct system.
Every cable has different pushing values and these values vary depending on
duct I.D. Example: A cable with a crash test value of 75 bar in 33 mm I.D. duct,
may have a crash value of only 60 bar in a 40 mm I.D. duct. This is because the
area of lateral movement is larger as the duct size increases.
!CAuTION: Always wear protective equipment: hard hat, safety glasses,
safety shoes and work gloves.
NOTE: The hydraulic motor pressure adjustment will have no effect on the
installation speed of the blowing unit. This is not a flow adjustment. This is a
pressure adjustment to prevent damage to the cable that can be caused by excessive
pushing force.
ImPORTANT: For the Crash Test to work properly use the same size cable and duct
that will be used for the job.
Set the hydraulic motor pressure on your Deluxe Blower using the following
procedure.
1. Attach 12' (4 m) of duct to the Deluxe Blower (Figure 6).
2. Install
Conduit Pulling Eye on the receiving end of the duct (Figure 7).
3. Cut a piece of fiber optic cable 15' (5 m) long. This is your test piece of cable.
4. Attach the correct size
Venturi to fit the cable being installed (Figure 8).
Figure 6. Placement of Conduit in
Conduit Seal & Conduit Clamp
Figure 7. Installing Conduit
Pulling Eye
6.