Graco HFRL Setup And Operation Manual page 38

Operation
2. Calibrate HFR
The HFR calibration procedure is a two step process.
The first step, Learn Mode, must be performed when-
ever the pump line is rebuilt or if any other maintenance
is performed that may affect the mechanical tolerances
in the pump line. If the machine does not appear to be
utilizing the full extent of the pump stroke, or if the
machine appears to be contacting the end of the
hydraulic cylinder, follow the Learn Mode procedure.
The Learn Mode procedure will teach the system the
mechanical limits of travel.
Learn Mode Procedure:
a. Navigate to the Calibration screen.
b. Place a waste container below the dispense
valve. The next steps will cause the machine to
dispense material.
c. Press the go right button
pense button
right most extreme position.
d. After the pump stops moving, press the go left
button and then press the dispense
button . The pump will travel to the left most
extreme position.
e. After the pump stops moving, press the con-
tinue button
calibration process or the page back button
to return to the main Calibration screen.
NOTE: During this process, the system learned the
mechanical limits of travel. If the pump did not reach
both the left and right extreme limits for any reason,
repeat the procedure.
38
and then the dis-
. The pump will travel to the
to go on to the next step in the
If the system is to be used in a Time or Volume Dis-
pense Mode, system calibration is complete after the
Learn Mode procedure described above. However, if
the system is to be used in Weight Dispense mode and
the application requires that the dispense amount be
accurate and consistent then the weight calibration
procedure below must be followed.
3. Set system control and dispense modes: See Sys-
tem Screen 1 on page 65.
4. Set pump sizes: See System Screen 1 on page 65.
5. Define Shot Recipes
a. Navigate to the Shots screen.
b. Press to enter the screen.
c. Use the directional keypad to navigate to the
shot detail column for the desired shot number.
d. Type the desired setting for that item then
press .
e. Repeat the previous two steps for all desired
shot numbers.
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