Graco ProMix 2KE Operation page 50

System Errors
Alarm and Description
QTA1 or QTB1
Dose Time Error
The gun trigger is active, but
no A pulses (QTA1) or no B
pulses (QTB1) are detected
during the dose time selected.
QLAX or QLBX
Leak Error
Pump A (QLAX) or Pump B
(QLBX) is running with all
valves closed.
DJA1 or DJB1
Linear Sensor Error
System does not detect the
pump A (DJA1) or pump B
(DJB1) linear position sensor,
or has an invalid position read-
ing.
DKA1 or DKB1
Reed Switch Error
System does not detect the
pump A (DKA1) or Pump B
(DKB1) reed switch sensor, or
detects an invalid state.
P4A1 or P4B1
Pressure High Error
System detects a high pres-
sure reading on pump A
(P4A1) or pump B (P4B1).
P6A1 or P6B1
Pressure Transducer Error
System does not detect pres-
sure transducer A (P6A1) or
pressure transducer B (P6B1).
50
Cause
System is in Mix mode and gun is only
partially triggered, allowing air but no fluid
to pass through gun.
Fluid flow rate is too low.
Dose time setting is too short for the cur-
rent flow rate.
Slow actuation of component A or B
valves.
A or B pump has no air pressure.
There is an air leak downstream from the
air flow switch.
The air flow switch is stuck open.
A or B dose valve leak
A or B pump is not seating and continues
to move/creep.
Sensor not recognized by system.
Magnet fell off.
Sensor readings are out of range.
Reed switch installed backward.
Reed switches are stuck, or both reed
switches are on at once
Magnet in air valve not functioning prop-
erly.
Pump air pressure is set too high.
Thermal expansion occurring in lines.
Pressure transducer malfunction.
Pressure transducer malfunction.
Solution
Fully trigger the gun.
Increase flow rate.
Increase the dose time setting.
See Ratio Low Error and Ratio High
Error, pages 48-49.
Verify that main air supply is turned on
and valves are open.
Check the air lines for leaks and repair.
Clean or replace air flow switch.
Replace valve needle and seat.
Replace pump packings, balls, and
seats.
Verify that sensor is plugged in. Verify
that sensor and AFCM are operational.
Verify cable connections. Replace any
malfunctioning component.
Replace magnet and holder on top side
of air motor piston.
Verify that the sensor is threaded down
completely.
Flip reed switch 180 degrees to align
with magnet in air valve.
Verify cable is connected on both ends.
Verify that reed switch, cable, and
AFCM are operational. Replace any
malfunctioning component.
Verify that magnet is installed properly
and is operational.
Reduce pressure on air supply to sys-
tem or pumps.
Relieve pressure if system has been
idle. Decrease environmental
temperature.
Replace transducer. Verify that cable
and AFCM are operational.
Replace transducer. Verify that cable
and AFCM are operational.
3A0868A