This section gives instructions on starting and stopping the compressor, instructions on the basic motions of the
compressor, and instructions on how to coordinate the basic motions to perform the specific tasks for which the machine
is designed. Since nearly every job presents a different problem, the operator may have to vary the given procedure to fit
the individual job.
30. Starting the Compressor
a. Refer to paragraph 45c for before-operation services to be performed.
b. Open both receiver service valves (fig. 9).
c. Set the ignition switch (fig. 13) to the ON position.
d. Push the starter switch (fig. 13). Use the choke if necessary, until the engine has started and begun to warm up.
Caution: Never operate starter for more than 30 seconds at a time without pausing to allow starting motor to
cool. Excessive cranking periods will cause starter to overheat and fail.
f. Allow the engine to warm up for several minutes.
g. Close the receiver service valves in order to build up air pressure within the receiver.
h. When air pressure reaches 70 psi, manually operate the safety valve on the air receiver (par. 15).
i. Check all gages and meter readings on the instrument panel (fig. 13) and listen for unusual noises.
j. Perform the during-operation services (par. 46d).
k. Connect the appropriate pneumatic tool. The various pneumatic tools and their method of installation is
thoroughly discussed in chapter 4.
31. Stopping the Compressor
b. Disconnect pneumatic tools.
c. Set ignition switch (fig. 13) to the OFF position.
d. Open all drain cocks (par. 28), in order to remove moisture, dirt, and oil, from the air receiver and air lines.
e. Open all service valves (figs. 9 and 10) in order to empty the compressed air from the air receiver.
f. Perform the after-operation services indicated in paragraph 45f.
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