Tempo Communications 920CL User manual

INSTRUCTION MANUAL
52083126 REV 1 © 2019 Tempo Communications Inc. 12/19
920CL
Optical Fiber Cleaver
Preface
Description
The Tempo Communications 920CL Optical Fiber Cleaver is intended to
precisely cleave fiber optic cables.
Safety
Safety is essential in the use and maintenance of Tempo Communications
and equipment. This instruction manual and any markings on the tool provide
information for avoiding hazards and unsafe practices related to the use of
this tool. Observe all of the safety information provided.
Purpose of This Manual
This instruction manual is intended to familiarize all personnel with the safe
operation and maintenance procedures for the Tempo Communications
920CL Optical Fiber Cleaver.
Keep this manual available to all personnel.
All specifications are nominal and may change as design improvements occur.
TempoCommunications Inc. shall not be liable for damages resulting from misapplication or
misuse of its products.
Important Safety Information
Read and understand all of the instructions and safety
information in this manual before operating or servicing
this tool.
Failure to observe this warning could result in severe
injury or death.
Electric shock hazard:
Contact with live circuits could result in severe injury or
death.
Wear eye protection when using this tool.
Fiber fragments can be extremely dangerous if they come
into contact with eyes or skin or are ingested.
• Collect all fiber scraps in the dust bin and dispose of them in an
approved fiber disposal unit.
• Do not touch the cleaving wheel blade cutting area.
• Do not disassemble or lubricate. Contact Tempo Communications for
maintenance and repairs.
• Store in a dry, clean location in the protective container.
• New Bullet
• Store the 920CL with the two foam chips to stabilize the cleaving
mechanism from moving.
Failure to observe these precautions may result in injury and may
damage the unit.
KEEP THIS MANUAL
Register this product at www.TempoCom.com

920CL Cleaver
Tempo Communications, Inc. 1390 Aspen Way •Vista, CA 920081 USA • 800-642-2155
2
Operation
1. Open the fiber dust bin.
2. Open cleaving handle mechanism.
3. Insert prepared fiber into the fiber clamp at the desired cleave length.
4. Close fiber clamp.
5. Close cleaving handle mechanism down.
6. Push cleaving wheel backwards to cleave the fiber.
7. Open the cleaving handle mechanism.
8. Open fiber clamp.
9. Make sure that the cut fiber is safely in the dust bin.
Hint: It is easier to load the fiber into the adapter if the fiber is curled in a
downward direction from the fiber clamp.
Normal Use and Maintenance
Make sure that the rubber presser feet and the fiber guide groove are clean
(no dust and fiber debris). Keep the fiber contact surfaces clean by using
isopropyl alcohol with a lint free cleaning wand.
Change the position of the cleaving wheel if the cleaving quality degrades
due to the blade being worn (usually 1000 cleaves per blade position). After
the cleaving wheel has been rotated through all 16 positions, the height can
be increased and the wheel can be reused through all of the 16 positions
once again. The cleaving wheel can be rotated two times for a total of 48,000
cleaves.
Blade Position Change
1. Loosen blade locking screw.
2. Rotate blade to next scale position.
3. Hold side face of blade and lock screw at new position.
4. Lay 0.7 mm pencil lead across both pressure pads.
0.7 mm
Pencil
Lead
5. Move slider back and forth and check if blade touches pencil lead.
• If blade touches pencil lead: Perform a cleave and check cleave angle
on 915 fusion splicer.
If cleave is not good: Check if blade is damaged or dirty at
new position.
• If blade drags pencil lead all the way across: Go to “Blade Height
Adjustment”.
• If blade does not touch pencil lead: Rotate pencil lead ≈180°
and try again.
If not sure: Perform a hcleave and check cleave angle on 915 fusion
splicer.
If cleave is not good: Go to “Blade Height Adjustment”.

920CL Cleaver
Tempo Communications, Inc. 1390 Aspen Way •Vista, CA 920081 USA • 800-642-2155
3
Blade Replacement
1. Lay down cleaver with scale numbers on blade facing up.
2. Remove blade locking screw.
3. Remove old blade and replace with new blade. Do not touch blade (very
sharp!) Use tweezers to remove old blade and insert new blade.
4. Lock new blade at position “1”.
5. Lay 0.7 mm pencil lead across both pressure pads.
Normal Use and Maintenance (con’t)
0.7 mm
Pencil
Lead
6. Move slider back and forth and check if blade touches pencil lead.
• If blade touches pencil lead: Perform a cleave and check cleave angle
on 915 fusion splicer.
If cleave is not good: Check if blade is damaged or dirty at
position“1”.
• If blade drags pencil lead all the way across: Go to “Blade Height
Adjustment”.
• If blade does not touch pencil lead: Rotate pencil lead ≈180°
and try again.
If not sure: Perform a cleave and check cleave angle on 915 fusion
splicer.
If cleave is not good: Go to “Blade Height Adjustment”.

920CL Cleaver
Blade Height Adjustment
1. Loosen both compression screws and height locking screw.
1 – Height adjustment screw
2 – Height locking screw
3 – Compression screws for blade height adjustment arm
2. Turn height adjustment screw:
• CW if blade did not touch pencil lead (moves blade up).
• CCW if blade dragged pencil lead across (moves blade down).
3. Tighten height locking screw and both compression screws.
4. Lay 0.7 mm pencil lead across both pressure pads.
0.7 mm
Pencil
Lead
5. Move slider back and forth and check if blade touches pencil lead.
• If blade touches pencil lead: Perform a cleave and check cleave angle
on 915 fusion splicer.
If cleave is not good: Check if blade is damaged at current position.
• If blade drags pencil lead all the way across: Go back to step 1 and
adjust CCW until good.
• If blade does not touch pencil lead: Rotate pencil lead ≈180°
and try again.
If not sure: Perform a cleave and check cleave angle on 915 fusion
splicer.
If cleave is not good: Go back to step 1 and adjust CW until good.
Normal Use and Maintenance (con’t) Specifications
Fiber Type Single and multimode fiber
Fiber Size 0.25 and 0.9 mm
Coating Diameter 125 μm
Cleaved Length 5~25/10 mm
Cleaved Angle ≤0.5°
Blade Life 48,000 cleaves
Mode Semi-automatic
Dimensions (H×W×D) 54 mm × 58 mm × 58 mm
Weight 290g
Troubleshooting
Failure Mode Cause and Solution
Fiber does not cleave. 1. Acrylic coating not removed from fiber.
2. Fiber surface not clean.
3. Clean rubber presser feet.
4. Increase height of cleaving wheel.
End face has lip. 1. Increase height of cleaving wheel.
2. Clean rubber feet.
3. Check rubber feet for wear or abrasion.
End face has shadow
or incline angle.
Increase height of cleaving wheel.
Core missing. Lower height of cleaving wheel.
Lip Incline
Note: Contact Tempo if the above chart does not provide a solution to attain-
ing a reliable cleave.
1390 Aspen Way • Vista, CA 92081 • USA • 800-642-2155
An ISO 9001 Company • ©2019 Tempo Communications, Inc.
Tempo Europe Ltd.
Brecon House, William Brown Close Cwmbran, NP44 3AB, UK
Tel: [phone]
www.TempoCom.com
1390 Aspen Way • Vista, CA 92081 • USA • 800-642-2155
An ISO 9001 Company • ©2019 Tempo Communications, Inc.
Tempo Europe Ltd.
Brecon House, William Brown Close Cwmbran, NP44 3AB, UK
Tel: [phone]
www.TempoCom.com