Graco 24J415, Instructions - Parts Manual

Page: 30 / 36

Available Internal Data
30 3A1704N
Controlling Device
CGM Control and Night Mode
When the controlling device sets the HFR into night
mode using the CGM, the controlling device will be
responsible for turning on and off the pumps accordingly
(by setting or clearing the “SYSTEM STARTUP BIT”, or
bit 7 bytes 1-2) when the “CGM Control Enabled” bit is
set (Bit 14, bytes 1-2). Any active night mode periodic or
time of day timer will be over-ridden by the controlling
device when the corresponding timer expires within the
Advanced Display Module (ADM). If the controlling
device clears the “CGM Control Enabled” bit after set-
ting the HFR into night mode, the night mode timers will
operate properly and condition the dispense material
accordingly.
CGM Control and Parking the Pumps
After the HFR is set to Standby mode, the controlling
device (and user by pressing the footswitch) will have
the option to park the pumps. When the pumps are
parked, the red material pump shaft will be immersed
into the red material, hence preventing exposure of the
shaft and red material on the shaft to the atmosphere.
If the system is a full circulation based system, the con-
troller device will need to have the pumps cycling in low
pressure mode (by setting the “SYSTEM STARTUP
BIT”, or bit 7 bytes 1-2) prior to setting the “Pump
Parked” bit (bit 4, bytes 1-2). For a standard HFR, the
user will have to remove the “SYSTEM STARTUP BIT”
immediately after the pump reaches the parked position.
For a recirculation type system, the pump will remain in
the park position, and ignore an active “SYSTEM
STARTUP BIT” request. For a recirculation type sys-
tem, to exit a parked state, the controlling device will
need to clear the “Pump Parked” bit, then set the “SYS-
TEM STARTUP BIT” from a cleared state. When this
occurs, the pumps will start cycling in the last low pres-
sure flow rate executed.
If the system is a stall to pressure type system, the con-
trolling device simply needs to set the “Pump Parked” bit
from an idle state, then the pumps will move to the
parked position. If the system has a manual dispense
valve, the user will need to ensure the pump pressures
are less than approximately 391 psi (2.7 MPa, 27 bar)
prior to setting the “Pump Parked” bit, and ensure either
the dispense valve is opened, or the material is diverted
out of the pressure relief valves at the material manifold.
ADM Screen Information when CGM
Control is Started or ended
When the user or controlling device sets or clears the
“CGM Control Enabled” bit, information provided on the
ADM display may or may not be current. If the user nav-
igates away, then back to the main home run screen,
the information provided will be current.