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Fig. 24

Exhalation Valve Replacement

1. Remove 3M™ Head Harness Assembly & Valve Cover 6582 by pulling away from faceseal (Fig. 24).

2. Remove 3M™ Exhalation Valve 6583 from valve seat by grasping the valve and pulling each valve stem out from the valve seat (Fig. 25).

3. Inspect valve seat, making certain it is clean and in good condition.

4. Replace 3M™ Exhalation Valve 6583 by inserting stems into the two holes until they are visible from inside the facepiece and then pulling the

stems through until they are seated and secured (Fig. 26).

5. Replace 3M™ Head Harness Assembly & Valve Cover 6582 by positioning the peg on the facepiece into the notch at the top of the valve cover.

Press the bottom of the valve cover into the facepiece. When properly engaged, an audible snap should be heard.

Fig. 25

Fig. 26

NOTE: Conduct a negative pressure user seal check to ensure exhalation valve is functioning properly.

Inhalation Valve Replacement

Inhalation valves are located on the inside of the facepiece inhalation ports. These valves should be inspected before each respirator use and

during cleaning. Replace whenever valves become damaged or lost.

1. Remove existing valve(s) by grasping valve and pulling valve off the center post.

2. Replace valve(s) by pressing the hole of the valve over the center post on the v`alve seat (Fig. 27). Be certain valve(s) is fully engaged through valve

post(s) and lays flat.

Fig. 27

3M™ Rugged Comfort Quick Latch Half Facepiece Reusable Respirator 6500QL Series Replacement

Parts & Accessories

Number

Description

6501QL

Small

6502QL

Medium

6503QL

Large