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General Machine Products (KT), LLC
Pressure Switch Setting
Caution
Refer to the section 4
‘
SPECIFICATION
’
for the correct pressure settings for the pressure switch and to
section 14
‘
PROCEDURE TO SET THE PRESSURE SWITCH
’
for the setting procedures.
NOTE:
-
The cable blowing machine is supplied as standard with the pressure switch set at 1015
psi (70 Bar), these settings are suitable for cables in the range 12
-
20mm O.D.
For cables 4
-
12mm O.D. these settings need to be changed, refer to the section 4
‘
SPECIFICATION
’
for the correct pressure settings for the pressure switch and to section 14
‘
PROCEDURE TO SET THE PRESSURE SWITCH
’
for the pressure setting procedures.
Fit the duct into which the cable is to be installed into the air box and duct
clamp.
It is recommended that a length of duct similar in size to the duct into which the cable is to be installed be
fitted in the duct clamp. This length of duct may then be connected to the installed duct (the length of duct
underground into which the cable is to be installed) using a suitable connector.
For duct sizes Ø12
-
22mm slide a suitable size O ring over the end of the duct.
Fit the duct into the end of the air box housing so that it protrudes half way into the housing.
For duct sizes Ø12
-
22mm position the O ring so that it sits against the seal face, as shown in below photo.
For duct sizes over Ø22mm, the seal is permanently located within the seal collet.
Once the duct has been positioned, the duct clamp may be closed and the locking screw tightened; the
duct is now secure.
ENSURE THAT THE INNER
-
DUCT IS FULLY PREPARED FOR USE, I.E.
a.
FULLY CONNECTED
b.
PRESSURE TESTED
c.
CABLE EXIT RETAINING DEVICE FITTED
d.
LUBRICATED
FOR FURTHER DETAILS ON INNER
-
DUCT LUBRICATION REFER TO SECTION 14.
For duct sizes over Ø22mm
For duct sizes Ø12
-
22mm
