7800 - Disassembly
© 3M June 2006. All rights reserved.
3M™ Full Facepiece 7800
Disassembly
Let’s begin with the facepiece.
1) To prepare the full facepiece for use with the GVP:
a. Remove the 701 Cartridge Inlets from either side of the facepiece.
b. Install a 7890 Plug into each inlet. The plugs should be replaced
when they are dirty or damaged.
c. Remove the 7890 Plug from the front DIN port.
2) To prepare the full facepiece for use with the Dual Airline:
a. Remove the 7890 Plugs, if it is not already fitted with a 701
Adapter. The 701 adapter allows you to attach the dual airline
breathing tube to the 7800 full facepiece.
b. Thread the assembled 701 adapters with the orange gaskets facing
outward into the cartridge connector port – do not tighten.
c. Install a 7890 Plug into the front DIN port.
3) The 7993 is the Welding Shroud, the 7915 is the Tyvek® Shroud.
The shrouds should be replaced when they are damaged, frayed or torn.
To remove the shroud:
a. Pull it up and over the facepiece, pulling the material from around
the DIN port and side ports when needed.
Tyvek is a registered trademark of E.I. DuPont Company.
4) The 7894 is the Standard Eyeglass Frame. Replace the frame when it
is damaged. To remove the it:
a. Lift the frame kit out of the inside of the facepiece.
b. An alternative frame is the 7925 Universal Frame Kit. It should be
replaced when it is damaged.
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