You must read the manufacturers instruction book
for each machine and become familiar with all its
operating characteristics and its basic design. If
routinely cleaned, descaled, and properly maintained,
scullery machines will not have any problems. But
these procedures must be done on time as specified by
the planned maintenance schedule or by the
manufacturers manual. Any necessary repairs and
parts replacement requests must be submitted by the
responsible division on Ships Maintenance Action
Form, OPNAV 4790/2K. Following this procedure and
using this form will provide you, as the maintenance
person, a document of repairs and parts that failed.
From time to time, you may be called upon to repair
scullery machines that have become defective. Figures
7-5 and 7-6 illustrate the types of scullery machines used
by the Navy. Some common difficulties, the usual
reasons for their occurrence, and possible remedies for
those difficulties are listed in table 7-4.
REPAIRS OR OVERHAULS
Scullery machines must be inspected by the
maintenance personnel according to the PMS schedule.
Listed here are some common inspections,
maintenance, repairs, or overhauls you may encounter
with these machines. You should perform the following:
1. Check the adjustment of tension on the conveyor
chains if the machine is equipped with a conveyor. If
the chain is equipped with lugs, make sure the lugs on
both chains are directly opposite each other.
2. See that the guide sprockets are properly located
on their shaft so that the conveyor chain will ride
properly on the track assembly.
3. Inspect the operation of the doors and make sure
all the counterweights are properly attached and the
doors are held in the open position when raised.
4. Check the operation of thermometers, pressure
gauges, thermostats, and automatic mixing valves or
5. Adjust the thermostat so that the machine will
not start up unless the desired temperature is reached.
6. Inspect the pump packing and adjust as
necessary to stop leakage around the pump shaft.
Figure 7-6.Cutaway view of a double-tank automatic dishwasher.