Graco EVR Instructions Manual page 42

Electric variable ratio proportioner
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ADM Screen Overview
The
icon is used for the calibration of a new
motor control board for Unit A. The
for the calibration of a new motor control board for Unit
B. These icons should only be pressed when the appro-
priate motor board is replaced or when error W5N_ is
active.
This screen also allows the user to generate an exces-
sive Pump or Dispense Valve cycles advisory, if the cor-
responding Pump or Valve cycles exceeds the number
entered in the second column limit field. If a non-zero
number is entered in that field, and the corresponding
pump or valve cycles exceeds that value, the EVR will
generate and log an advisory informing the user of the
condition. To remove the advisory, either reset the cur-
rent counter, raise the Limit value, or enter zero for the
limit value.
42
icon is used
Maintenance Screen 2 and 3
This screen allows users to see the line voltage of the
incoming AC power, the motor temperature, the per-
centage of torque on the motor, and the position of the
pumps.
The arrow located to the right of the pumps position
indicates the direction the pumps are moving. When
the arrow is green, the pumps are moving, and when
the arrow is red, the system is going through a change-
over.
A green arrow pointing up means the rod is moving
towards the driver housing, and a green arrow pointing
down means the rod is moving towards the pumps.
A red arrow pointing up signifies a top changeover, and
a red arrow pointing down signifies a bottom change-
over. The outlet and inlet pressure indicate the active
pressures respectively.
The status bits illuminate, indicating when the following
are true: system ready, unit is B, Local Unit Dispensing,
Pair Unit Dispensing.
3A8565C

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