inspections, talk to galley personnel about the
operation of the coppers. These personnel can give
you information that will assist you in diagnosing
possible operational or maintenance problems. A few
factors for inspecting direct-steam coppers (fig. 5-1)
are as follows:
inspection and maintenance of coppers are provided in
table P of appendix II.
Check the faucets, valves, and piping for leaks.
Check the steam pressure-reducing valve to
ensure it is in good condition and functions
Lubricate the hinges of the cover with mineral
Steam chests are used to cook food through a
steaming process. The escape of steam from a steam
chest harms the food being prepared and also poses a
safety hazard to personnel. To ensure steam-tight
operation, ensure the door latches, hinges, and gaskets
are kept close fitting. A physical preventive
maintenance inspection of the steam chests (fig. 5-2)
should be made each week.
The weekly inspection should ensure the
Check the copper for leaks, cracks, and dents.
Examine the cover, hinges, and latch for warp
The compartment drains are free of obstructions.
The door hinges, locking devices, and shelf
drawbars work well.
Check the steam and condensate piping, valves,
and traps for leaks and obstructions.
The pressure setting of the gauge pressure is
Remove the safety valves and remove any rust
and corrosion using Navy-approved solvents.
Then, lubricate and calibrate the valves before
Other than visual inspections, each individual
piece of galley equipment requires its own type of
When a plunger type of valve is used with the
locking device, the plunger must be adjusted so the
valve is fully depressed when the door is closed. This
action allows a full measure of steam to enter the
compartment. When the door is opened, the valve
must function to stop the steam supply completely. To
ensure a tight fit of the doors, replace hinge pins and
bushings when they show too much wear. Some
full-floating doors are adjustable by means of
hexagon-head bolts extending through the door near
each corner. When door gaskets must be replaced, you
must remove the door from the unit because this makes
it easier to remove the worn gasket and to clean the
channel. Failure to complete these actions can provide
a path for steam leakage. Apply gasket cement, and
then force the new gasket into the channel at the
corners, working it in toward the center of the sides and
ends. You are now ready to hang the door; but first,
place paper along the edge of the door opening to
prevent excess cement from adhering to the mating
surfaces when the door is closed. Any surplus cement
can be cleaned off after it has hardened. When the door
has hexagon-head bolts, adjust them so the closed door
touches the steamer evenly without binding at the
corners. Unless you have a good fit, the gasket will cut
by the corners of the door and steam will escape. For
inspection and preventive maintenance of the steam
service and condensate system, include those items
that apply in table P of appendix II.
preventive maintenance. Recommended schedules for
Figure 5-1.A pedestal and a trunnion or tilt type of