CORNING Universal Access Tool 3 Manuale utente
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 1 of 18
P/N 004-074
Issue 12
Universal Access Tool 3
Operating Instructions
Figure 1
1. General
1.1 The Corning Optical Communications Universal Access Tool 3
(UAT3) is designed to access individual bers or ribbons in single tube
cables in a mid-span location (Figure 1). The tool, Corning part number
UAT3-000, is designed to access bers in buer tubes from 5 to 24 mm
in outer diameter (OD).
1.2 This procedure describes the use of the access tool and
illustrates how to access bers or ribbons in Corning Optical
Communications single tube ribbon, stranded loose tube ribbon, and
single tube (loose or bundled ber) cable designs (see Table 1).
NOTE: Other manufacturer’s tubes may require blade adjustment
derived through experimental cuts on scrap tube sections.
1.3 The UAT3 tool is designed to give innite blade height
adjustment to accommodate a range of both tube diameter and wall
thickness. This is accomplished without the need for a set-up gauge
through the use of both coarse and ne adjustment wheels on both
halves of the tool (Figure 2).
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 2 of 18
1.4 The coarse adjustment setting is obtained from either Table1
or the plastic gauge supplied with the tool. The coarse setting is the
recommended starting point and has been chosen such that the blades
will score the central tube, but not penetrate it. When turned, each
click of a coarse wheel adjusts its respective blade depth in 0.2 mm
increments.
NOTE: The coarse blade adjustment wheels have over 360° of rotation,
which results in both a “Raised A position” (a backed-out,
shallow blade position) and a “Bottomed A position” (all the way
in, or deepest cutting position) (Figure 2, inset).
The ne adjustment wheels are used to dial in the blade to the desired
depth of cut, providing +/-0.15 mm of blade depth adjustment. The ne
adjustment wheels are labeled “+” and “-”, but are not indexed like the
coarse adjustment.
Factors such as tube curvature, variation in cable geometry, and wall
thickness will aect the depth of cut; therefore, a couple of “trial runs”
may be required to “dial in” the desired cutting depth.
NOTE: Top and bottom blade height adjustment assemblies are not
interchangeable. The assembly marked T is the top half of the
tool and the assembly with B is the bottom half of the tool.
1.5 Follow the instructions for the closure or terminal being
installed to determine the length of sheath to remove and the length
of buer tube to be opened.
IMPORTANT: The cable/ber lengths shown in this procedure are for
illustrative purposes only; the lengths required for any
particular terminal or closure may vary.
Coarse adjustment wheel
Fine adjustment wheel
Side view
Coarse adjustment wheel
in Raised "A" Position
Coarse adjustment wheel
in Bottomed "A" Position
Figure 2
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 3 of 18
2. Precautions
2.1 General Precautions
CAUTION: Recommend the use of safety glasses (spectacles)
conforming to ANSI Z87, for eye protection from accidental
injury when handling chemicals, cables or ber. Pieces of glass
ber are very sharp and have the potential to damage the eye.
CAUTION: The wearing of cut-resistant safety gloves to
protect your hands from accidental injury when using sharp-
bladed tools and armored cable is strongly recommended.
Use extreme care when working with severed armor. There
will be a sharp edge where armor is cut. To minimize the
chance of injury from the cut armor, cover the exposed edge
with a wrap of electrical tape. To minimize the chance of
injury from sharp-bladed tools, always cut away from yourself
and others. Dispose of used blades and armor scrap properly.
2.2 Tool Handling Precautions
CAUTION: Never adjust the blade heights with the tool closed,
or close the tool halves together unless the blades are fully
retracted. Failure to follow this precaution may result in
damage to the blade tips.
2.3 Tube Handling Precautions
CAUTION: Buer tubes are sensitive to excessive pulling,
bending, and crushing forces. Great care should be used when
handling buer tubes. Excessive bending will cause kinking
which may damage the bers inside..
2.4 Chemical Precautions
WARNING: Isopropyl alcohol is ammable with a ashpoint
at 54°F. It can cause irritation to eyes on contact. In case
of contact, ush eyes with water for at least 15 minutes.
Inhalation of vapors irritates the respiratory tract. Exposure
to high concentrations has a narcotic eect, producing
symptoms of dizziness, drowsiness, headache, staggering,
unconsciousness, and possibly death.
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WARNING: Filling compound remover contains petroleum
distillates. Harmful or fatal if swallowed. DO NOT INDUCE
VOMITING. Call a physician immediately.
2.5 Fiber Precautions
CAUTION: Cleaved or broken glass bers are very sharp and
can pierce the skin easily. Do not let these pieces of ber stick
to your clothing or drop in the work area where they can
cause injury later. Use tweezers to pick up cleaved or broken
pieces of glass bers and place them on a loop of tape kept
for that purpose alone. Good housekeeping is very important.
2.6 Laser Precautions
WARNING: Never look directly into the end of a ber that
may be carrying laser light. Laser light can be invisible and can
damage your eyes. Viewing it directly does not cause pain. The
iris of the eye will not close involuntarily as when viewing a
bright light. Consequently, serious damage to the retina of the
eye is possible. Should accidental eye exposure to laser light
be suspected, arrange for an eye examination immediately.
3. Kit Contents, Tools, and Materials
3.1 The UAT3 kit has the following contents:
• UAT3 tool (P/N UAT3-000)
• UAT3 tool crank handle (separate from the tool)
(P/N 3230079-01)
• 3/8-in open-end wrench (p/n 3222008-01)
• Plastic gauge card (P/N 3230080-01)
• Small screwdriver (P/N 100302-01)
• Replacement blades (4) (P/N UAT3-BLADES)
• Replacement springs (2) (P/N NAT3-SPRINGS)
• UAT3 operating manual (SRP-004-074)
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 5 of 18
3.2 In addition to the UAT3 kit, ber or ribbon splice tray(s),
and cable closure or terminal, the following tools and materials are
required:
• Utility knife *
• Scissors*
• Fiber Clean® wipes *
• Vinyl tape *
• Cable ties *
• Spatula *
• Tape measure *
• Needle-nose pliers
• Cotton swabs *
• Isopropyl alcohol
• Plastic bristle brush
(e.g., tooth brush)
• Permanent marking
pen *
• Ideal® buer tube
cutters:
• Model 45-163 for 0.125 - 0.218 in tubes (p/n 100107-01)
• Model 45-164 for 0.25 - 0.56 in tubes (p/n 3204002-01)
3.3 Additional items required for grounding:
• Grounding hardware and tools approved by your company
• Pliers
* Items available in the M67-003 Fusion Splicing Tool Kit
4. Cable Preparation
4.1 Prepare the drop cable
according to instructions appropriate
for the cable and the closure or
terminal in which you are placing the
cables. Place the prepared drop cable
aside in a secure place.
4.2 Determine the center of the
slack loop of the cable. Measure and
mark a distance of 100 cm (40 in) on
both sides of this midpoint. Place a wrap of tape at each of these points
to mark a total of 200 cm (80 in) of cable to be accessed (Figure 3).
NOTE: More or less cable may be accessed according to slack need
and availability. This length could be 250 cm (100 in) or more.
When installing aerial terminals (such as the SCA), position the
terminal on the strand and then mark the appropriate section of
cable to be accessed.
Tape
1
0
0
c
m
(
4
0
i
n
)
1
0
0
c
m
(
4
0
i
n
)
Figure 3
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 6 of 18
4.3 To ground armored cables, remove the outer sheath and
armor between the tape marks following the cable manufacturer’s
instructions.
CAUTION: Never permit the UAT3 tool to contact the cable
armor, as blade or tool damage may result.
4.4 Access the cable’s buer tube according to the appropriate
sheath removal procedure.
4.5 Place a mark 12.5 cm (5 in) (or as required for the terminal you
are installing) from the end of each side of the exposed section of
buer tube with a permanent marking pen (Figure 4).
Figure 4
4.6 Depending upon the type of closure or terminal being used,
assembly may be easier if you install cable mounting hardware and
sealants at this time.
For an SCN closure, install the sheath retaining clamps and sealing tape
before proceeding to Section 8 (Figure 5).
Figure 5
5. Tool Preparation and Initial
Adjustment
5.1 Before each use, check the blades for dullness or damage. If
necessary, replace the blades per Section 10 of this manual.
5.2 To attach the tool’s handle , hold the drive shaft with the 3/8-in
wrench provided and thread the handle onto the shaft (Figure 6).
12.5cm ( 5 in)
12.5cm ( 5 in)
Marks
Yarn or rovings ( length per
appropriate procedure)
Sheath retention clamps
Sealing tape
tube
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 7 of 18
CAUTION: The tool must be driven with the handle. do not
pull the tool or attempt to drive it with power tools.
Figure 6
5.3 To initially prepare the tool for use:
a. Use the thumbscrew to open the tool to at least 0.25 in more
than the diameter of the tube to be accessed (Figure 7).
Figure 7
NOTE: In the following steps, a recommended blade setting is
referenced. In most cases you will have to make adjustments to
the blade setting while slitting the buer tube to get the desired
depth of cut.
b. For the tool to operate correctly, the blade depth adjustment
must be made (or veried) prior to accessing any tube.
Determine the buer tube diameter using either Table 1 or
the plastic gauge card supplied with the tool kit.
Drive shaft
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 8 of 18
Initial blade depth adjustment
5.4 The top and bottom halves of the tool are identied with TOP
and BOT, respectively, near their blade depth adjustment wheels. The
blade depth adjustment assemblies are marked T for the top half of the
tool and B for the bottom half. The blade adjustment assemblies must
not be interchanged, as this may alter the actual blade depth.
To set coarse depth, adjust the tool
halves to at least 6.3 mm (0.25 in)
apart, turn the coarse wheel all the
way clockwise (in) to the bottomed
“A” setting at the index mark, and
then back out to the required setting.
This ensures that the setting is made
with the rst revolution of the blade
depth adjustment.
5.5 Turn both the top and bottom FINE adjustment knobs
counterclockwise to their lowest setting, the “minus” signs (Figure 8).
Tube OD (mm) Blade Setting (Top/Bottom)
5 A
6-7 B
8-9 C
10-11 D
12-13 E
14-15 G
16-17 H
18 J
6. Closure or Terminal Preparation
Prepare the closure or terminal according to the instructions supplied
with it.
IMPORTANT: Be sure to read, understand, and follow the steps of this
section before using the tool. If the blade depths are
set too deep, damage to the ber may result. Failure to
carefully follow these procedures may result in ber or
ribbon damage, which in turn may lead to loss of service.
Coarse adjustment
wheel
Fine adjustment
wheel
Index mark and "A"
Figure 8
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 9 of 18
7. Accessing a Tube
7.1 After preparing and opening the tool as described in Section 5:
a. Determine the start point and direction in which you will
make the cut. Position the tool over the central tube so that
the middle of the tool is aligned with the start location of
the cut and the top and bottom arrows are pointing in the
direction of the cut (Figure 9).
Hold the tool in your left hand. Tilt it backward, lifting the
front and pressing down on the rear of the tool. Apply enough
force to compress the front lower and the rear upper “V”-
shaped spring loaded guides. While holding this position
(Figure 9, inset) use your right hand to tighten the knurled
knob, closing the tool on the tube. Tighten until just snug.
Turn the handle slightly to see if the tool will track on the
tube. Tighten the tool in small steps until the tool moves
smoothly along the tube. The purpose of this method of
placing the tool on the tube is to prevent blade damage from
side forces on the blades while they become engaged with
the tube.
Figure 9
NOTE: Centering of the tool on the cable is very important. The conical
shape of the rollers will “self center” the tube in the tool after
a short distance (1-2 in), but care should be taken to center the
tube when performing the positioning procedure. The tool is
designed to straighten the tube as it passes under the cutting
blades; however, it is limited in this respect and larger buer
tubes may not fully straighten. This results in one blade cut-
ting deeper than the other. See Figure 10 for the recommended
position of the tool relative to tube curvature.
Starting point
Direction of cut
Side view
Standard Recommended Procedure 004-074 | Issue 12 | May 2017 | Page 10 of 18
Figure 10
b. Snug the thumbscrew nger-tight to close the tool.
NOTE: If the thumbscrew is too tight it may cause the tool to bind
characterized by excessive force required to turn the drive handle
and the tool slipping on the central tube. If the thumb-screw is
too loose the handle will spin easily and the tool will slip on the
tube. If in doubt leave the screw slightly loose as it can easily be
tightened in the following steps.
Final blade depth adjustment:
7.2 It is recommended to adjust the blades to maximize the score
depth without penetrating the tube (Figure 11). This step is critical to
protect the bers inside the tube.
Figure 11
7.3 With initial blade depths set and the thumbscrew loosely
tightened, advance the tool approximately 6 in (15.24 cm) by turning
the handle in the direction of the arrow marked on the tool (Figure 12).
Side view
Let the tool ride on "top"
of any curvature
A
J
B
C
I
H
G
E
D
F
Top view
A
J
B
C
I
H
G
E
D
F
Top view Incorrect
Correct Correct
Tube walls
Fibers
Not to scale
Blades
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