Section II. DESCRIPTION AND DATA - TM-5-4120-352-140009

TM 5-4120-352-14

Section II. DESCRIPTION AND DATA

1-8. Description

c. Condenser Section. The condenser section

contains the hermetically sealed motor compressor,

a. General. Air conditioner model CH609-3

condenser coil, condenser fan and motor, actuator,

(figures 1-1 thru 1-3) is a lightweight, compact, hor-

service valves, filter dryer, equalizer solenoid valve,

izontal unit designed for cooling and heating air to

liquid quench valve, pressure regulator valve, elec-

a desired predetermined range, and circulating the

trical power connectors, and the necessary refrig-

conditioned air to provide heating or cooling of

erant. The compressor mechanically compresses re-

equipment or personnel within the air- conditioned

frigerant vapor to a condensing condition and

area.

discharges it into the condenser coil through the hot

b. Evaporator Section. The evaporator sec-

gas line. Outside air, drawn over the condenser coil

tion contains the evaporator coil, fan motor and fan,

surface by the condenser fan, condenses the refrig-

control module and junction box, air filter, heating

erant vapor to a liquid. The liquid then leaves the

elements and thermal expansion valve. When cool-

condensing coil and returns to the thermal expan-

ing, air in the evaporator section is forced over the

sion valve through the liquid line. Condenser fan

evaporator coil by the evaporator fan which lowers

speed is controlled with a thermostatic switch lo-

the temperature of the air before it is distributed

cated on rear of unit. At ambient temperature of

into the space to be conditioned. When heating, air

100F +5F (38C +3C) or above, the condenser fan

is circulated over the heating elements and distrib-

speed will turn at high speed, but at ambient tem-

uted by the evaporator fan. Evaporator fan speed is

perature below 100F +5F (38C +3C) the con-

controlled by a selector switch located on control

denser fan will turn at low speed. Due to residual

module.

mass heat there will be a delayed reaction time for

this to happen when ambient temperature drops

below the 100F (38C) changeover point.

1-4