TM 10-4610-241-10
TO 40W4-13-41
2-7. ROWPU ASSEMBLY AND PREPARATION FOR USE - cont.
u. Install Ground Rod. Refer to figure 2-43 and ground the ROWPU as follows:
WARNING
ELECTRICAL HIGH VOLTAGE CAN KILL YOU
· Electrical high voltage cannot be seen but it can kill you. Electricity is unlike most other
dangerous things you can come in contact with because it gives no warning and no symptoms to
be wary of. Its effect is immediate. It can kill you, render you unconscious, or severely burn you.
To ensure your safety and that of other personnel, always observe the following precautions:
· ALWAYS make sure the unit is properly grounded.
· Extreme care must be taken to prevent injury to fingers or hands when driving the ground rods.
Do not place hands between the ram and drive collar. Gloves should be worn. Be sure all
connections are tight so as to avoid a possible spark between the units and ground rod.
(1)
Loosen both bolts on plates securing ground rods to control panel.
(2)
Swing plates out from under lower bolts, and remove three ground rod sections from control panel.
(3)
Locate ground rod section with the drive bolt screwed into the coupler. The drive bolt prevents damage to
the coupler when the rod is driven into the ground.
(4)
Drive the first 3-foot round rod section into the ground with the 8-pound hammer.
NOTE
If driving gets too hard, soak the earth with water and try driving rod until! eight feet of rod is in
the ground. If this does not work initially, continue alternately soaking ground and driving rod. If
unable to get eight feet of rod into the soil, then keep soil moist around the rod for the duration of
the operation.
(5)
When the rod coupler of the first ground rod section is about 6 inches above ground, remove the driving
bolt.
(6)
Screw another ground rod section into the one already in the ground. Install the drive bolt into the coupler
and drive the ground rod section the same as the first section. Continue until there are 8 feet of rod in the
ground.
(7)
(Model WPES-10) Remove nut from GROUND lug located on the ROGEN frame. Insert ground strap in
GROUND lug and install nut. Connect other end of ground strap to clamp on ground rod and tighten
clamp.
(8)
(Models WPES-20 and WPES-30) Remove nut from GROUND lug on ROWPU frame. Insert ground strap
in GROUND lug and install nut. Connect other end of ground strap to clamp on ground rod and tighten
clamp.
2-76
