TM 55-1930-209-14&P-16
4-12 Shutdown procedures
4-12.1 AC unit
a.
Rotate right cooler switch on AC controls fully counterclockwise to unload compressor (Figure 4-2).
b.
Turn left OFF/FAN/COOL switch on AC controls to OFF.
c.
Turn selector switch to OFF (Figure 4-1).
d.
Turn HEAT/OFF/AC switch to OFF (down position).
e.
If seawater pumps are NOT operating and cooling water pump is NOT being used to supply water to chlorination
unit, turn cooling water pump off and close seawater valves SW3, SW27, SW28, SW35 and SW36
f.
If seawater pumps are NOT operating and cooling water pump is supplying water to chlorination unit, close
W2.
g.
If seawater pumps are operating, close seawater valve SW47.
4-12.2 Heating unit
a.
Turn thermostat to lowest possible setting by moving control lever to bottom of its travel (Figure 4-2)
b.
Turn left OFF/FAN/COOL switch on AC controls to OFF.
c.
Turn HEAT/OFF/AC selector switch to OFF (Figure 4-1).
d.
Turn AC electrical switch to OFF (down position)
4-13 Emergency shutdown procedures
4-13.1 General. Paragraph 2-12 explains the barge's emergency shutdown systems. Any of the total shutdown buttons
will cut off power to the HAC system. Any of the individual system shutdown buttons that shut down a generator
supplying power to the switchboard will also shut down the HAC system.
4-13.2 Emergency shutdown procedures
a.
In an emergency, push the appropriate RED button to shut down either all operating systems or the generator set
providing power to the switchboard.
b.
When emergency situation has been corrected, reset emergency button by turning collar behind button one-
quarter turn clockwise. Button will pop out and again be in ready position
c.
When emergency button is reset, HAC must be restarted by performing procedures in paragraphs 4-10 and 4-11.
Section III. Maintenance instructions
4-14 General
4-14.1 Maintenance concept
4-14.1.1 Unit level and IDS/IGS maintenance on the HAC system Is performed onboard by crewmembers whenever
possible.
4-14.1.2 Any IDS/IGS maintenance beyond capability of crewmembers will be provided by a shore-based area support
maintenance unit. This unit also determines if depot support maintenance is required
4-14.1.3 Intermediate support maintenance is accomplished by replacing components or major end items
4-14.1.4 Unless other intermediate support maintenance procedures are directed, IDS/IGS maintenance normally is
provided by an Army Transportation Corps floating craft intermediate support maintenance unit serving terminal
operating area Components to be disposed of are processed by this unit.
4-8
