Graco VRM 24F872 Instructions Manual page 74

Appendix D - ADM Event and Error Codes Overview
Error
Code Error Name Error Description
Red Pressure
P4A1
Shutdown
The material pump pressure
exceeded the maximum
Blue
operating pressure as defined
P4B2 Pressure
in the setup screens
Shutdown
The pressure difference
Pressure between the Red and Blue
P4D0
Imbalance material is greater than the
defined amount
Red Pressure
P6A1
Sensor Fault The pressure sensor is
providing invalid/no pressure
Blue
P6B2 Pressure readings
Sensor Fault
R4D0-A
The Ratio of Materials
dispensed is high, exceeding
tolerances entered; Too much
High Ratio
R3D0-D
Blue material with respect to
Red.
R1D0-A
The Ratio of materials
dispensed is low, exceeding
tolerances entered; not
Low Ratio
R2D0-D
enough Blue material with
respect to Red.
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Error
Type Cause
Dispense valve failed to
Alarm
open
Bad dispense valve
Restriction in the
material lines
Invalid maximum
pressure defined
Alarm
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
Alarm Loose/bad connection
Bad sensor
Alarm
No material in pump
Alarm Red Tank Empty, or out
of Red material.
Blockage or Red material
Deviation feed. Blockage of Red
Material in Flow Meter, or
elsewhere.
Alarm Blue Tank Empty, or out
of blue material.
Blockage or Blue
material feed. Blockage
Deviation
of Blue material in Flow
Meter, or elsewhere.
Solution
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
Check to ensure the pressure transducer is properly
installed and all wires are properly connected
Replace pressure transducer
Fill tanks
Fill Red material tank or drum.
Check for blockages in Red material flow.
Fill Blue material tank or drum.
Check for blockages in blue material flow.
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