Graco HFR Setup page 81

Error
Code Error Name Error Description
The MCM attempted to move
Pump Failed
N4A1 the pump but no movement
to Move
was detected
Material
Material dispense is above the
N4D0 Dispense
defined limit
Above Alarm
Low AC Power Pack pressure too
P1H3 Accumulator low, or failed to reach desired
Pressure pressure.
Pressure has risen to an
unsafe level due to thermal
Thermal
P400 expansion of materials. All
Pressure Rise
conditioning zones have
automatically been turned off.
Red Pressure
P4A1
Shutdown
The material pump pressure
exceeded the maximum
operating pressure as defined
Blue Pressure
P4B2
Shutdown in the setup screens
The pressure difference
Pressure between the Red and Blue
P4D0
Imbalance material is greater than the
defined amount
3A2797ZAA
Error
Type Cause
Motor failure
Hydraulic power pack
failure
Loose/bad connection to
the linear position sensor
Failure of the linear
position sensor
Deviation
Motor no longer coupled
to hydraulic pump
Supply tube from
hydraulic pump to
manifold is loose or
broken
Broken motor shaft
Over-pressure valve
dumping to tank
Cable unplugged/loose
Alarm
power
Alarm Accumulator Directional
Valve will not shift to
charge position.
Deviation High pressure
Dispense valve failed to
open
Bad dispense valve
Restriction in the
material lines
Alarm Invalid maximum
pressure defined
Orifices blocked
Hose blocked
Dispense valve failed to
open
Dispense line is clogged
Pressure imbalance is
defined too low
Orifice blocks closed off
too much on one or both
Alarm
sides
Debris in the orifice
block
Material fillers may have
packed out in an orifice
Out of material
Feed system defective
Appendix D - ADM Error Codes
Solution
Visually check to ensure the pump is moving, if not
ensure the motor is wired properly
If motor is moving but pump is not and pressure is
not building they hydraulic power pack may need
servicing
Check to ensure the linear position sensor is properly
connected to the MCM and the wiring has not be
damaged
Replace the linear position sensor
Reset coupler per specifications and retighten set
screws
Retighten or replace supply tube
Replace motor
Verify that no outside forces are stopping the pump
from moving, then inspect over-pressure valve for
damage or debris
Check for loose or disconnected wires or plugs
Check control line to Directional Valve. Replace
Directional Valve.
Open the dispense valve manually or open the valves
to bleed pressure
Check to make sure the dispense valve is properly
configured and connected to the MCM
Replace dispense valve
Check to ensure there is no blockage
Make sure the requested pressure is within the max
operating pressure, which can be found on the setup
screen System 1
Clear blockage
Clear blockage or replace hose as necessary
Check to make sure the dispense valve is properly
configured and connected to the MCM
Ensure the material flow is equally restricted on both
material lines
On the ADM go into the setup screens -> System->
and ensure the pressure imbalance value is the
maximum acceptable to prevent unnecessary alarms
which will abort dispenses
Verify that one or both of the orifice blocks dispense
when adjusted to the fully open position then adjust
accordingly
Relieve system pressure then remove the orifice from
the orifice block and inspect for debris in the cavity
Relieve system pressure and remove the orifice from
the orifice block and inspect for pack out. Clean or
replace as necessary.
Fill tanks with material
Replace defective item
81