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TM 55-1905-223-24-17
Natural convection fan
Manual ON/OFF
Internal adjustable thermostat
b.
Ventilation System. The ventilation system consists of the axial, centrifugal, and panel fans in
the supply air and exhaust air systems.
(1)
Axial Fans
Duct mounted
Electric motor
V-belts on belt drive fans are oil, heat, and static resistant
Manually started
Self-aligning
One-piece propeller and hub construction
Access doors for cleaning and maintenance
2)
Centrifugal Fans
For small to medium exhaust and supply ventilation applications (toilets, galley hood, and A/C-
emergency generator room)
Electric, easy access motor
V-belt drive
Hinged motor mount to aid in belt adjustment
Non-overloading backward inclined wheel (fan)
Manually operated
(3)
Panel Fan
Small, blade type ring fan
Panel mounted with guard
Direct drive
c.
Air Conditioning (Recirculation) System.  The recirculation air system consists of three air
conditioning units that provide local filtering and cooling of air to the pilothouse, equipment
operating spaces (EOS), and living spaces on the vessel. The system contains two 3-ton units
and one 16-ton unit.
(1)
3-Ton Koldwave refrigeration units (A/C-1, pilothouse; and A/C-3, engine control room)
Self-contained unit
Hermetic (sealed) compressor
Thermostat controlled
Manual and automatic start
Direct motor drive fan (blower)
Direct expansion coil
Condensate pump
1-4

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