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CHAPTER 3 - OPERATIONAL PROCEDURES
1. When the operator is ready to begin handling, loading, or unloading
flammable material, the truck must be grounded.
2. Connect one clamp to a metal object which looks like it should be
grounded, and connect the other clamp to another metal object
at least 20 feet away which also looks like it should be grounded.
Ideally, both objects should have a buried portion. See Chapter 2 on
"Clamp Placement Guidelines".
3. Check the display, it should show "
is good but that loading or unloading has not been started. The actual
ground resistance in ohms can be recorded from the top display if
desired.
4. Loading or unloading can now be started. If loading is attempted
before the ground connection is made, the warning horn will sound
for a set time, and then the final alarm will activate unless the ground
connection is made within the set time period.
5. If the ground connection is lost during loading, the warning horn will
sound for a set time, and the final alarm will activate unless the ground
connection is remade within the set time period.
6. When loading is complete, shut down the loading system and then
disconnect the grounds.
7. If the ground has been lost and the warning horn is sounding, shutting
down the loading system will silence the warning horn.
8. If the PosiGround shows "
then there is a defect in the wiring of the ground cables which must
be corrected before the PosiGround can be used.
9. Each time a proper grounding connection is established, or the loading
system is shut down, the timer is reset.
10. The PosiGround system must be tested periodically to make sure
that the warning horn sounds and that the final alarm activates. The
system must also be tested by any new operator to ensure that he is
familiar with PosiGround operation for that particular vehicle.
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" or "
" when the cables are connected,
", indicating that the ground
672-H Manual
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