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 TM 55-1915-200-10
2-7.11. Main Engine Cold Weather Start. (FIGURE 2-
NOTE
240)
NOTE
When it is necessary to dewater
against a high discharge head,
To maintain a constant state of
connect pumps in series.
readiness, main engine coolant
temperature must be kept above 125
F. In cases of extreme temperatures,
a. Connect pumps in accordance with FIGURE 2-
pre-heat the coolant as follows:
243.
a. Open preheater circulating pump discharge
CAUTION
valve (3).
Submerse Pump #1 before applying
b. Open preheater circulating pump suction valve
(13).
power to prevent overheating.
c. Open main engine preheater suction valve (31).
b. Apply power by plugging general purpose
d. Open discharge gauge cutout valve (5).
extension box into the nearest receptacle.
e. Turn HAND-OFF-AUTO switch (3, FIGURE 2-
241) to AUTO position on circulating pump motor
NOTE
controller.
There is no power switch on the
CAUTION
pump.
Observe discharge pressure gauge
2-7.13. Workboat Launching.
(4, FIGURE 2-240).
If discharge
pressure is not observed within 30
2-7.13.1. Heavy Weather Conditions.
seconds, turn the HAND-OFF-AUTO
switch (3, FIGURE 2-241) to the OFF
WARNING
position.
Vessel must be positioned to place workboat davit
f. Turn HAND-OFF-AUTO switch (2, FIGURE 2-
and launch area on leeward side of weather to
242) on main engine sump heater to the AUTO position.
reduce risk of personal injury and damage to
equipment.
2-7.12. Firefighting Equipment.
Clear working area of unnecessary personnel and
NOTE
equipment prior to davit operations.
All
portable
damage
control
Safe pre-operation set-up requires three persons to
equipment including submersible
elevate the boom and a fourth soldier to install
pumps,
portable
fire
pumps,
boom support pin.
Failure to follow set-up
eductors, and desmoke blowers are
procedures could result in serious injury and
located in the Damage Control
damage to equipment.
Locker on the main deck, portside.
a. Inspect work area around davit to ensure safe
operating area.
2-7.12.1. Operation of Submersible Pumps Against
High Discharge Head.
2-619
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