User's Instructions

3M Confidential
NOTE: To maintain the safety of the device, it is recommended to replace the battery with a UL or ETL
marked / listed CR2450 Lithium Manganese Dioxide coin cell battery.
2.3 M-Series Mounting
Refer to the 3M™ Versaflo™ M-Series Headgear User Instructions for proper use, operation, care,
inspection and maintenance of your M-Series helmet, as well as all other headgear accessory installation
and replacement instructions not included in these User Instructions.
The 3M™ Headtop Peripheral Carrier HTP-1-HC-CX is field replaceable and can be added to any
existing M-Series headgear that does not already have one installed. Components such as the headtop
visor and pivot may need to be replaced as a result of wear or sensor mounting requirements. Carrier and
magnetic components must be mounted on the headtop’s right pivot for proper operation of the Headtop
Peripheral’s visor positioning sensor.
NOTE: For M-100, M-200 & M-300 Series users, you must first detach the faceseal from the suspension
headband. Re-attach faceseal before use. See M-935, M-936, & M-937 Faceseals in this section for
additional information.
Figure 2 shows key components. From the top down, the part marked “3M” is the post (1), the next part is
the “carrier” (2), and the bottom part is the “metal spring clip” (3).
1. With the headgear upside down and the visor frame in the up (open) position, pull down on metal
spring clip (towards inside of headgear) until it touches the backplate. Pull out to remove (Figure
2.1). Gently use a tool if necessary (i.e., flat-head screwdriver).
2. Push backplate out from shell slightly (towards outside of headgear) and slide out from slot on
headgear shell to remove (Figure 2.2).
3. To re-install the visor frame, insert “3M” post into visor frame. Ensure “3M” is positioned such
that it is right side up when worn and not upside down.
4. Install carrier into the headgear shell. When installing, the “windmill” pattern should be facing
outwards. Insert the rounded edge first and slide completely into the slot (Figure). Gently push
down on carrier to ensure it is flush to bottom of slot.
5. Line up visor frame over attachment slots and slide spring clip into place. With the post and
carrier back plate engaged, the visor frame should be in the fully open or fully closed position
before the spring is installed (Figure).
6. Verify the visor frame and carrier is correctly installed by raising and lowering the visor several
times. Ensure the visor stays firmly in the up (open) and down (closed) positions.
Figure 2
Figure 2.1
Figure 2.2