BAC FXVT 288 Series, Инструкция по эксплуатации и техническому обслуживанию

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OPERATING LEVEL AND MAKE-UP
Before initial start up the straps, that prevent the float ball from moving during transport, as well as the protective
bag around this ball, need to be removed.
Fixation and wrapping of float ball
As the water circulating through the unit is cooled, it collects in the cold water basin and passes through the
strainers into the system.
The operating water level is controlled by the make-up valve and should be maintained at the operating water level
shown in the table below.
Model number
Height of water in the cold water basin
(mm)
FXVT 288-x xx, FXVT 364-x xx 267
Cold water basin operating heights
The "x" represents the variable numbers or characters in the model numbers.
The operating water level in the cold water basin will vary somewhat with system thermal load (evaporation rate),
the bleed rate employed and the make-up water supply pressure. Because the typical winter load is less than the
summer load, the winter evaporation rate is frequently less than the summer evaporation rate. With this reduced
evaporation rate in winter, the water level in the cold water basin will increase unless the float is readjusted. The
operating water level should be checked monthly and float re-adjusted as necessary to maintain the recommended
operating level.
A float operated water make-up assembly is furnished as standard equipment on evaporative cooling equipment. It
is located inside the unit within easy reach from the access door.
The standard make-up assembly (see figure below) consists of a make-up valve connected to a float arm
assembly and actuated by a large diameter plastic float. The float is mounted on an all-thread rod which is held in
place by wing nuts. The operating water level in the cold water basin can be adjusted by repositioning the float and
all-thread rod using the wing nuts provided.
W W W . B A L T I M O R E A I R C O I L . E U
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