3M 6700 User Instructions page 12

Converting from the Standard Center Adapter 6864 to the DIN Port Adapter 6884
Any 3M™ Full Facepiece 6000 Series can be converted to the desired center adapter assembly by following the instructions in 3M™ Center Adapter
Assembly Replacement and installing the Bayonet Caps 6880 with Inhalation Port Gaskets 6895 or the Full Face Plug 7800 with Breathing Tube
Gasket 6876 as appropriate.
3M™ Nose Cup Assembly 6894 Replacement
The nose cup assembly replacement 6894 consists of a nose cup and inhalation valves. It is designed to install onto the center adapter and
comfortably fit over the respirator wearer's mouth and nose to aid in purging exhaled breath and prevent lens fogging.
1. Remove the nose cup assembly by pulling away from center adapter inside facepiece (Fig. 15).
2. To replace, position nose cup assembly onto center adapter aligning arrows (Fig. 17).
3M™ Center Adapter Gasket 6896 Replacement
The center adapter gasket replacement is designed to seal the interface between the center adapter and the lens of the Full Facepiece 6000 Series.
1. Remove nose cup assembly by pulling away from center adapter inside facepiece (Fig. 15).
2. Grasp center adapter at cover and twist counter-clockwise 1⁄4 turn to disengage from facepiece lens. Withdraw center adapter from lens center
port.
3. Remove old gasket 6896 from center adapter and replace with new replacement gasket 6896.
4. Re-install center adapter into facepiece lens (Fig. 16).
5. Replace nose cup assembly.
3M™ Inhalation Valve 6893 Replacement
Inhalation valves are located on posts at the inside of the facepiece inhalation ports and inside the nose cup inhalation ports. These valves should be
inspected before each respirator use and replaced whenever valves become damaged or lost.
1. Remove existing valve(s) by lifting from post(s).
2. Install new valve(s) onto post(s). Be certain valve(s) is fully engaged under all three lugs on post(s), lays flat, and moves freely (spins) on post.
3M™ Exhalation Valve 7583 Replacement
1. Remove center adapter cover by pulling out from bottom latch.
2. Grasp valve and pull each valve stem out from valve seat (Fig. 18).
3. Inspect valve seat making certain it is clean and in good condition.
4. Place new exhalation valve replacement over the exhalation port by inserting stems and pulling through from the opposite side until they are both
snapped in place (Fig. 19 and 20).
5. Replace valve cover by aligning and inserting the top opening in the valve cover with the top tab on the center adapter base. Rotate the cover
down until it snaps to the center adapter base. An audible click should be heard.
NOTE: Conduct a negative pressure user seal check to ensure exhalation valve is functioning properly.
Fig. 16
6898 w/6864asmbl
4/12/04 K&K
6864
Fig. 17
11
(English)
6864_bkView
8/16/04 K&K