Honeywell North 5400,7600, RU6500 Series Instruction Manual

7600 RESPIRATOR 1. Remove the respirator’s components. a. Remove the oral/nasal cup it by gently pulling it away from the speech diaphragm housing (Figure 43). b. Pull out the inhalation valves and valve seats in the oral/nasal cup (Figure 44). c. Unthread the exhalation valve guard from the seat. Remove the valve and valve seat, and threaded flange holding the valve seat (Figure 45). d. Remove the speech diaphragm assembly by unthreading the speech diaphragm nut on the outside of the mask (Figure 46). e. Push the speech diaphragm housing into the mask to remove it (Figure 47). f. Turn the locking ring counter-clockwise to remove the speech diaphragm, being careful not to lose the two orange O-rings (Figure 48). g. Push in on the cartridge connectors to unseat them from the gaskets (Figure 49). h. Pull the cartridge gaskets out of the lens (Figure 50).

Figure 43

Figure 44

Figure 45

Figure 46

Figure 47

Figure 48

Figure 49

Figure 50

2. Inspect all components for any wear or damage. a. Check components for holes, tears crazing or other signs of wear. b. Replace any components that are damaged or missing. 3. Wash the facepiece components. a. Prepare a solution of cleaner sanitizer according to instructions. b. Wash the facepiece and components thoroughly in the cleaner sanitizer solution. Use a soft brush on the facepiece and headgear assembly to loosen any caked on dirt. c. Rinse the facepiece and components in clean warm water and then let dry completely. 4. Reassemble your facepiece after following all steps outlined in the printed manual under the section INSPECTION. Use the REPLACEMENT PARTS schematic at the end of the printed user instructions. a. Inspect all components as they are being assembled. Replace any that are damaged or missing. Verify that the oral/nasal cup is the same size as the facepiece by verifying the letter(s) on the front of the oral/nasal cup. If you have a 760008A the cup should have an “M/L” (medium/Large) (P/N 80815-H5), and if you have a 760008AS the cup should have an “S” (small) (P/N 80800-H5). b. Place the grommet (P/N 80871A) in the lens, making sure that the larger flange is on the inside and the inner and outer flanges lie flat against the lens. c. Put one set of inhalation valves (P/N 770017) on the cartridge connectors (P/N 770016), making sure they lie flat against the connectors. d. Insert the cartridge connectors by pushing through the grommets from the inside of the facepiece. Make sure the connectors are all the way through and lying flat against the flanges. e. Insert the speech diaphragm (P/N 80870-H5) into the speech diaphragm housing (P/N 80858-H5) so the holes in the speech diaphragm are facing out, and the smaller orange O-ring (P/N 80857A) is between the speech diaphragm and the housing. Put the locking ring on top of the speech diaphragm and hand tighten by turning clockwise. f. Place the larger of the O-rings (P/N 80861A) onto the speech diaphragm housing and insert the speech diaphragm assembly into the larger port of the lens so thekeys in the port line up with the notches in the housing, and the O-ring is between the inside of the lens and the speech diaphragm housing. When inserted properly the threads of the housing will be completely through the lens and the housing will be flush up against the inside of the lens.

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