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The ferrule size decides which fiber connector cleaner should be used. LC and MU connectors use a 1.25 mm interface, while SC, FC and ST connectors use a 2.5 mm interface. Using the correct size keeps the cleaning surface aligned with the ferrule and avoids forcing an unsuitable tool into an adapter.
The CLE-PEN cleaner is built for this selection. The 1.25 mm MU/LC model cleans LC and MU adapters and ferrules. The 2.5 mm model cleans SC, FC and ST adapters and ferrules. The nozzle can remain short for accessible ports or be extended for recessed interfaces. The operator aligns the guide cap, inserts the tip or connector plug, pushes the outer shell in a straight motion and stops when the audible click indicates that the stroke is complete.
The cleaning cloth advances inside the pen and the indicator shows whether the remaining material is full, low or empty. This makes the consumable state visible during routine maintenance. When the cloth is empty, the pen must be removed from service until the correct replacement or refill is installed. The cleaning surface must stay protected and must not be touched or reused.
Main product benefits
- Correct interface matching: Separate 1.25 mm and 2.5 mm models make the connector choice clear: LC/MU for the small-ferrule version, and SC/FC/ST for the larger-ferrule version.
- Standard and extended reach: The lock button and pull-out nozzle give technicians a short configuration for open ports and an extended configuration for recessed adapters or crowded panels.
- Adapter and connector-plug cleaning: The guide cap can be removed when cleaning an adapter, or opened so a connector plug can be inserted into the cleaning guide. This supports both sides of a typical patching workflow.
- One-click stroke with audible completion: The operator uses a single controlled push of the outer shell. The click provides a simple end-of-cycle signal without relying on a visual guess about how far to push.
- Visible cleaning-cloth status: The indicator identifies full, low and empty cleaning material. This helps a technician remove an exhausted tool before it can contact a ferrule without cleaning cloth
- Compact field format: The pen shape fits a fiber installation kit, test case or maintenance pouch and can be stored with its guide-cap cover closed.
- Dry routine cleaning:The manual describes a cleaning-cloth process, so routine use does not require a bottle of cleaning fluid. Oil, salt residue or stubborn film may need a connector-approved wet-to-dry method and post-cleaning inspection rather than repeated dry strokes.
Product Structure and Function
| Component | Function |
|---|---|
| Tip | Leads the cleaning cloth to the connector end face |
| Nozzle | Guides the tip toward the optical connector end face |
| Lock Button | Extends or retracts the nozzle |
| Outer Shell | Provides the push stroke that cleans the connector |
| Guide Cap | Protects the tip and works as a cleaning adapter for a connector plug |
| Cover | Closes over the connector-plug opening when not in use |
| Indicator | Shows the remaining cleaning cloth |
| Cleaning Cloth / Tape | Transfers dust and loose contamination away from the ferrule |
Compatibility and Application Map
| Work Area | Recommended Version | Typical Use |
|---|---|---|
| LC Patch Panels | 1.25 mm LC/MU | Clean LC ferrules and adapter sleeves before mating |
| MU Interfaces | 1.25 mm LC/MU | Clean MU connector end faces where the guide matches the port |
| SC Distribution Frames | 2.5 mm SC/FC/ST | Clean SC adapters and connector plugs in telecom and FTTH work |
| FC Test Equipment and Panels | 2.5 mm SC/FC/ST | Clean threaded FC ferrules before measurement or reconnection |
| ST Legacy Networks | 2.5 mm SC/FC/ST | Clean bayonet-style ST connector end faces |
| Recessed Adapters | Matching 1.25 mm or 2.5 mm model in extended mode | Reach interfaces set behind a panel or inside a crowded rack |
| Field Repair and Maintenance | Select by Connector Family | Keep the correct pen in a portable fiber-tool kit |
| Link Acceptance Testing | Select by Connector Family | Clean before inspection, power measurement, and final mating |
A four-step process for verifiable cleaning.
Clean before mating, and re-inspect the end-face upon completion. The cleaning pen performs the wiping, while the microscope verifies the results.
Examine the end-face
Check for dust, oil, or residue, and ensure the connector specification matches the cleaning tip diameter.
01
Align the guide tip
Remove the protective cap and align the cleaning tip vertically with the SC/LC end-face or the adapter's cleaning port.
02
Press until it clicks
Apply a gentle axial push; a mechanical "click" indicates the cleaning cycle is complete. Do not rock or tilt the tool.
03
Re-inspect before mating
Check the end-face again to ensure it is clean before mating; the cap is for protection only and cannot replace cleaning and inspection.
04
Manufacturer context
FOCC Fiber Co., Limited presents itself as a fiber-optic communication manufacturer and OEM/ODM supplier founded in 2014. Its public product system includes fiber connectors, LC and SC products, MTP/MPO cable assemblies, adapters, fiber-tool kits and inspection/testing equipment. That product context supports the placement of this cleaning pen within a complete connector installation and maintenance workflow.
The current About Us page describes a Shenzhen sales operation, Guangzhou production activity, clean-workshop capacity and international export experience. Use the current company profile and certificates supplied with a quotation when a buyer needs formal supplier qualification. Do not place a changing factory number, certificate year or country count on the product page without checking the current document.
FAQ
Which cleaner should I use for LC connectors?
Use the 1.25 mm CLE-PEN Cleaner MU/LC model. It is designed for LC and MU connector interfaces.
Which cleaner should I use for SC, FC or ST connectors?
Use the 2.5 mm CLE-PEN Cleaner SC model. The supplied manual identifies it for SC, FC and ST connectors.
Can one pen clean both LC and SC connectors?
No. The connector families use different ferrule sizes. Use the 1.25 mm model for LC/MU and the 2.5 mm model for SC/FC/ST, or order a set containing both.
Can the pen clean adapters and connector plugs?
Yes, the manual shows separate procedures for a connector inside an adapter and a connector plug. The guide cap is used differently in the two procedures.
What is the extended mode for?
Extended mode pulls the nozzle forward to provide additional reach for recessed or crowded adapters. Confirm the required clearance with the buyer's panel before ordering.
How do I know when the cleaning cloth is nearly used up?
The built-in indicator shows full, low or empty remaining cleaning cloth. Stop using the pen when the indicator shows empty.
Does the pen need alcohol or cleaning fluid?
The manual describes a dry cleaning-cloth operation and does not instruct the operator to add liquid. Stubborn oil or film may need a connector-approved wet-to-dry method followed by inspection.
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