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Pressure controls serve various
functions, which may be divided into control and protection
functions. Examples for control functions are compressor
cycling, pump-down or defrost control. Protection
functions include, pressure limiting and cut our against
excessive pressures, against loss of charge or for freeze
protection.
Our pressure controls are
equipped with display scale and pointers to indicate the
approximately settings. The display scales are printed in
relative pressure units "bar" and "psi".
For precise setting of the controls, external gauges must be
used.
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