3-10. REMOVE/INSTALL MANOMETER.
This task consists of:
Wrench, Open End Adjustable, Appendix C, Item 21
Flat-tip Screw Driver, Appendix C, Item 89
Cross Tip Screw Driver, Appendix C, Item 86
Naphtha or Acetone, Appendix E, Item 1,
Mercury, Appendix E, Item 15
General Safety Instructions
Mercury is a poisonous material which may enter the body by ingestion,
inhalation, or skin absorption. Mercury has such density, high surface
tension, and low viscosity that pouring without splashing and spilling is
almost impossible. When mercury is poured, always use a funnel and
make the transfer over spill trays. If a mercury spill occurs, do not
vacuum or sweep the area. This will disperse mercury throughout the
laboratory. Spills may be cleaned up by using a glass tube of about 1
mm and connected by rubber tubing to a filter flask connected with a
vacuum pump or aspirator, the flask acting as a trap. Control of mercury
vapor should not be attempted with Flowers or Sulfur as this is not
effective. Spills must be reported to the Environmental Science Officer
providing services to the unit. Protective equipment must be worn when
Dry cleaning solvent P-D-680 (safety or Stoddards Solvent) is
potentially dangerous. Avoid repeated and prolonged breathing of
vapors and skin contact with the liquid. Do not use near open flame,
arcing equipment or other ignition sources, Always wear eye protection
and protective clothing. The flash point of P-D-680 is 100° to 138°F (30°
Remove Manometer. (Figure 3-7)
Turn the air pressure regulator off.
Remove vent plug and replace with rubber cork.
Loosen hose clamp screw on manometer and disconnect hose.
Remove three mounting screws and remove manometer.