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HAPI™ Miniflex
®
Cable
Installation Tool
User Manual
3.0 Using The Tool
There are a number of considerations to take into account when planning to use the HAPI™ Tool to install Miniflex
®
cable into microducts. These are considered below and in the following pages.
Before using the HAPI tool, it is recommended that a crash test be performed to determine the maximum force/
torque that can be safely applied to the cable. A crash test helps the operator to understand how much force can be
safely applied to the crank handle without causing the cable to slip or become damaged.
The distances quoted in the chart (see 3.3 on pg. 13) are benchmark guidelines but should not be considered exact.
Depending on the nature of the route and the performance of the microduct, shorter or longer distances might be
achieved. The operator should not simply assume that the cable can be installed a certain distance without first
performing a crash test.
The crash test will indicate to the operator the safe level of force to use when turning the drive wheel. The crash test
should be undertaken whenever a different size/type/fiber count of cable or microduct is used.
The steps below outline a simple way to perform a crash test to prevent excessive force being applied.
Crash Test Method
1.
Cut a short length of microduct (the length should be long enough to allow acceleration of the cable to achieve
a realistic pushing speed).
2.
Block the end of the duct with a suitable end cap or plug. Kinking the end of the microduct will have the same
effect if no end cap is available.
3.
Using a scrap length of cable that is at least 0.5 m longer than the microduct, set the tool up as outlined in
sections 3.4 to 3.6 of this user guide.
4.
Crank the handle as detailed in section 3.6. When the cable meets resistance at the end of the microduct,
gradually apply more force until the cable slips or becomes damaged. If necessary, tighten the tensioning knob
to provide maximum grip from the drive wheel.
5. When no more tension/grip can be applied and the drive wheel continues to slip or the Miniflex cable becomes
damaged, the maximum pushing force has been witnessed.
6. Take note of the force being applied before the cable slipped or became damaged. This represents the maximum
pushing force and should be recalled when using the HAPI tool to prevent undesirable cable damage.
7. Remember that using a different cable construction or microduct will require further crash testing.
3.1 Crash Test
12
Summary of Contents for PPC HAPI Miniflex
Page 1: ...HAPI Tool User Manual ...
