Germfree BZ Series, User Manual

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8
Installation and Operation
Manual
Series A3 & A4
The series A3 and A4 were designed to give the user maximum feedback and
flexibility. The process arch LED’s are designed to mimic the indicating needle
of a mechanical gauge. The process arch will light up from left to right as the
pressure moves away from zero. Negative pressure will be indicated by the
negative sign before the numerical indication. The 4 digit LED displays the
numerical pressure reading and will show either 3 or 4 digits based on the users
preference. The LCD (or OLED) display is used for programming and displaying
the unit of measure and up to 4 other user selected program parameters. The LED
indicators for SP1, SP2, and Alarm give indication when the parameter is in the
actuated state.
The A3 and A4 have four buttons located on the face of the control used for
programming. There is an up arrow, a down arrow, a left arrow/cancel, and a
right arrow/accept button as shown below.
up arrow
down arrow left arrow / cancel right arrow / accept
LED Pressure
Indication
LCD or OLED
Programming Display
Setpoint and
Alarm Indicators
Process Arch Negative
Indication
3. OPERATION
3.1 Display
3.2 Key Function