Graco EVR Instructions Manual page 37

To name a recipe, press the
desired recipe is selected. A new screen, shown below,
will appear and allow the user to edit the name of the
selected recipe. Use the arrow keys to select the
desired letter and press
Setup Screen 1
This screen allows the user to change the dispense
mode, rate units, pressure units, pressure imbalance
alarm, and the pump line, and size of the A and B
pumps.
Valve Type: the valve type can be set to TC or MD2
depending on which valve is installed on the system.
NOTE: If Voltex valve is connected, the system will
automatically display Voltex as the only option.
Rate Units: The rate units can be set to minute, sec-
ond, or hour.
Pressure Units: The pressure units can be set to either
psi or bar.
Size: The user can enter the size of the A and B pumps
on the unit here.
Ratio Direction: The user can define which pump is set
to 1.
Ratio: The user can enter a desired ratio that the sys-
tem will run at. The limits are defined by the software
using the pump sizes, and the ratio direction. Note: Any
time the user changes the pump sizes on the screen,
the software will default back to the fixed ratio of the
pumps. After the sizes have been changed, the variable
3A8565C
icon when the
to accept the letter.
ratio can be adjusted up to five times the fixed ratio.
Example: if pump A is 40cc and pump B is 20cc, the
variable ratio can vary between 10:1 and 2:1.
Ratio Offset: The user can enter a ratio offset, which is
intended to calibrate the system and take into account
any offset between materials. The limits are defined by
the software using the pump sizes and ratio direction.
Setup Screen 2
This screen allows the user to monitor inlet and outlet
pressures of the EVR during a dispense. The user can
specify a minimum and maximum allowable value for A
and B for both inlet and outlet pressures. The user can
also specify the level of alerts for each individual pres-
sure limit. The alert options include Disabled, Deviation,
and Alarm.
Disabled: No pressure monitoring will occur.
Deviation: The user will be notified if the pressure goes
below the minimum or above the maximum, but further
dispensing will be allowed to occur.
Alarm: If the pressure goes below the minimum or
above the maximum, the current dispense will stop and
further dispensing will not be allowed until the alarm is
acknowledged.
Pressure Imbalance Alarm: When checked, the pres-
sure imbalance alarm will watch the pressure for both A
and B pumps. If the pressure difference between
pumps is greater then the pressure defined in the alarm
box, an alarm will be triggered.
ADM Screen Overview
37