Learning Event 3
OPERATE THE M12A1 PDDA UNDER NORMAL AND UNUSUAL CONDITIONS
When operating the M12A1 PDDA, you should know when the apparatus is functioning properly and be
alert for occurrences that indicate trouble with the unit. You should know during-operation services and
procedures for operating the M12A1 PDDA in unusual conditions.
All personnel operating the M12A1 PDDA will wear adequate protection when performing
Wear protective clothing and a mask when engaged in decontaminating
operations. STB decontaminating agent and slurry are harmful to the skin,
eyes, lungs, and clothing. Personnel must wear protective clothing and
mask when handling STB decontaminating agent, performing
decontaminating operations, and spraying slurry. If STB decontaminating
agent or slurry gets in the eyes, flush them immediately with clear water.
If agent or slurry is taken internally, drink raw egg white, milk, or rice
gruel. Follow with emetic (a tablespoon of dry mustard in a glass of
water). If agent or slurry contacts the skin, wash the agent off
immediately with clear water.
INDICATORS OF NORMAL OPERATION
When you are operating the M12A1 PDDA, observe the components for signs of trouble (leaking hoses,
fuel lines, unusual noises, changes in sound of engine, and so forth). Watch all gages and the
tachometer to be sure they are working and read within the proper range. The proper reading for each
gage found on the pump unit control panel is shown in Figure 25.
Figure 25. Correct readings of pump unit control panel gages.