30-ton R.L. Chiller Package Model LM2-WC30-6S

TM 55-1915-200-10

1-10.2.3.1. 30-ton R.L. Chiller Package Model LM2-

system.

A low pressure control switch stops the

WC30-6S. The chilled water package generates and

compressor in the event of low pressure in the low side

of the system.

distributes chilled water to all space air conditioning

units via the chilled water piping system. The chilled

1-10.2.3.5.

15-Ton Sea Water Condensers.

The

water package is a nominal 30-ton, dual circuit

refrigerant to cooling water plant designed for complete

condensers are heat exchangers in which the

automatic operation. The two refrigeration systems of

compressed high temperature refrigerant gas is lowered

the package comprise two compressors, two cleanable

in temperature and condensed to a liquid. Sea water is

sea water condensers, two individual sets of controls,

pumped through the tubes absorbing the heat given off

and one dual circuit liquid chiller barrel. The design of

by the refrigerant and then back overboard.

the package is such that mechanical or electrical failure

in one refrigerant circuit will not affect operation of the

1-10.2.3.6.

Water Regulating Valve.

The water

other circuit.

regulating valve automatically controls the sea water

flow through the condenser to maintain a relatively

1-10.2.3.2. 30-Ton Dual Circuit Chiller. The chiller

constant condensing pressure and temperature. This

circulates water to be cooled around refrigerant tubes for

valve is actuated by the refrigerant high (discharge)

cooling. The chiller is of the shell and tube type with two

pressure in the condenser and must be adjusted to

separate refrigerant circuits. Water to be cooled is

maintain the required condensing pressure and to

circulated through the shell and cold refrigerant flows

restrict water flow when the compressor is stopped. The

through the inner tubes. The fresh water system is

water regulating valve is located in the condenser sea

charged with a 35% (65 gallon) Ethylene Glycol mixture

water inlet line.

down to 0 . The approximate system total volume is

200 gallons of liquid. The hand valve is located on the

1-10.2.4. Model 39BA-050 Air Handling Unit. This air

suction side of the chilled water pump. By use of this

handling unit provides cooling, heating and positive

valve, some of the system mixture can be drawn off and

pressure for the galley and passageway areas of the

tested with a hydrometer. The systems solution is

officers deck, poop deck, bridge deck, and mezzanine

protected to 0 .

decks. The system passes outside air through the

chilled water coil using a continuously operating blower.

1-10.2.3.3.

15-Ton 460 Volt Compressor.

The

Chilled water at 40 is circulated through the coil from

the chiller package and reduces the 95 entering air to

compressor withdraws refrigerant gas from the

approximately 57 .

evaporator and delivers it to the condenser at an

increased temperature and pressure. This temperature

This conditioned air is then circulated through the duct

is such that refrigerant heat can be absorbed by sea

system.

water at ordinary temperatures. The drive motor turns

the compressor by means of a common crankshaft.

1-10.2.5. Model TFZU 22 kW Heater. The 22 kW

1-10.2.3.4. Control Box Assembly. The control box

heaters are duct mounted heating sources. The heaters

assembly controls and monitors chiller package

are controlled by two stage heating thermostats. The

operation. It contains starting controls and a high

first stage, 7 kW,

pressure control switch which stops the compressor in

the event of excessive pressure in the high side of the

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