3M 250-900 User Manual

The Network of Networks.

3M™ No Polish ST Connector SM and MM,
Flat Splice, 250/900 µm

Instructions

November 2012
78-0013-6978-0-B

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Safety Precautions

Protective Eyewear

 CAUTION

To reduce the risk associated with eye injury:|

- Safety glasses should be worn when handling chemicals and cleaving the optical fiber.

Chemical Precautions

 WARNING

To reduce the risk associated with fire:

- Storage, use and disposal of isopropyl alcohol should be per your company health, safety and environmental instructions. Refer to
material safety data sheet for health hazards, safe handling, proper use and control measures.

 CAUTION

To reduce the risk associated with eye or skin irritation from fiber gel in connector:

- Product contains phenylmethyl silicone (63148-58-3), hydrophobic silica (68611-44-9) and may cause minimal eye irritation. Avoid
contact with eyes and wash hands before eating or smoking. Upon eye contact, immediately flush eyes with water while holding eyelids
open and continue flushing for ten minutes. Contact a physician. Upon skin contact, wash with soap and water. Product Information:
Material Safety Data Sheet or call 3M at 1-800-364-3577 or 651-737-6501 (24 hours).

Bare Fiber Handling

 CAUTION

To reduce the risk associated with handling sharp glass fibers:

- Cleaved glass fibers are sharp and can pierce the skin. Use tweezers when handling shards and dispose of them properly per your com­pany health and safety instructions.

Fiber/Cable Handling

NOTICE

To reduce the risk associated with fiber damage:

- Optical fiber can be damaged by excessive tensile, compressive and bending forces. Consult the manufactures’ specifications for proper
handling instructions. Laser Safety

Laser Safety

 CAUTION

To reduce the risk associated with eye damage from exposure to laser light:

- Take the proper precautions when working with optical fiber because invisible laser light may be present. The principal laser hazard
when working with fiber optics is injury to the eye. Never look directly into the fiber or connector using the naked eye or a microscope.

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1.0 Connector and Tool Diagram

1.1 The diagrams below show the parts of the 3M™ No
Polish ST Connector (singlemode pictured) and the

™

No Polish ST Connector Assembly Tool 8835-

3M
AT. Please review these drawings to understand the
instructions in the following pages.

the cut segment will be noticeably difficult to remove
without the aid of a tool.

Note: When using loose tube or semi-tight buffered
fiber, and after stripping and cleaving the fiber, it is
important that the 250 µm acrylate coating on the
bare glass not protrude more than 1 mm (.04 inches)
beyond where the 900 µm buffer is stripped away. One
way to help ensure this is to use the clamp on the fiber
holder during the stripping process. Here’s how. Place
the fiber holder on the fiber facing backwards (clamp
closet to cut end) and 20 cm (8 inches) from the end
of the fiber. Secure the fiber into the SEMI-TIGHT
BUFFER groove of the clamp. Proceed to strip the fi­ber as though it were tight buffered. Remove the fiber
holder and proceed with the preparation and termina­tion processes.

Another way to help ensure this is to use the clamp
on a second fiber holder during the entire prepara­tion and termination processes. Place the second fiber
holder on the fiber facing backwards and 20 cm (8
inches) from the end of the fiber. Secure the fiber into
the SEMI-TIGHT BUFFER groove of the clamp.
Proceed to strip, clean, and cleave the fiber as though
it were tight buffered, and terminate the connector
onto the fiber. Remove the second fiber holder from
the fiber after the entire process is complete.

Carefully follow safety, health and environmental
information given on the product label or the Material
Safety Data Sheet (MSDS) for the no polish connec­tor. Emergency phone: [phone] or (651) 737­6501 (24 hours).

2.0 3M™ No Polish ST Connector SM
and MM 250/900 µm, Termination
Instructions

Note: To determine if a fiber is tight buffer or not,
perform this test. Using a sample of the fiber and the
fiber stripper, cut the buffer between 5 and 50 mm (.2
to 2 inches) from the end. Withdraw the stripper from
the fiber. (Do not remove the cut buffer segment using
the stripper.) Attempt to remove the cut segment of
buffer from the fiber using only finger pressure. If the
fiber is loose tube or semi-tight buffered, the cut seg­ment will come off very easily. If it is tight buffered,

2.1 Prior to each termination, clean all tools, including
the fiber holder, with a lint-free cloth and reagent
grade isopropyl alcohol.

2.2 Remove the dust cap from the front of the
connector. Raise the actuator button on the
assembly tool. Pivot the receptacle upward. Then
insert the connector into the receptacle by aligning
the key on the connector with the keyway in the
receptacle and pushing it in until it stops. Move the
pivot receptacle back to the horizontal position.

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78-0013-6978-0-B