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The compressor pump-down control is accomplished
by a liquid-line solenoid valve used in conjunction
with a low pressure switch.
The Liebert manufactured low profile, direct drive
propeller fan type air cooled condenser provides
quiet, efficient operation.
It is constructed of aluminum with a copper tube and
aluminum fin coil for corrosion resistance. An inte-
gral, factory wired and tested control panel reduces
installation time.
The winter control system features a variable speed
motor and a specially designed solid-state fan speed
control transducer.
The transducer senses refrigerant pressure and var-
ies the speed of the fan motor to maintain constant
condensing temperature and system capacity. This
system permits operation at ambient temperatures
as low as -20°F (-29°C).
The Lee-Temp winter control system’s heated receiv-
ers permit startup and positive head pressure control
at ambient temperatures as low as -30°F (-34.4°C).
The Lee-Temp package includes insulated receiver, a
pressure relief valve, three-way head pressure con-
trol valves, and rotalock valves (see Figure 7 below).
The Series PB condenser converts the Challenger
3000/Lee-Temp system into a self-contained package
when an outdoor location is not practical.
Quiet-Line Condensers can help your facility meet
the strictest noise codes, and do so at less cost than
traditional condensers with acoustical shielding.
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