Graco ProMix PD2K Repair Parts page 19

Type Description
Code
DKD# Alarm Position
Failed
Pump #
Alarm Position
DKF#
Overspeed
Pump #
Rec- Home
EBH#
ord Complete
Pump #
EF0# Alarm Timeout
Startup
Pump #
EF1# Alarm Timeout
Shutdown
Pump #
F1D# Alarm Flow Low Mix
Pump #
332709D
Problem
Pump was unable to
reach it's drive position.
Pump moved beyond it's
drive position.
Record of pump homing
is complete.
Pump tried but was not
able to move to the
home position within a
specified amount of time.
Pump tried but was not
able to move to the park
position within a specified
amount of time.
The Mix Unit was unable
to maintain it's target flow
rate.
Cause
Not enough air is
supplied to the dosing
valves.
The pressure at the
pump outlet is too high.
The pump was knocked
out of position.
An indication on the
display that the pump
completed the home
function
Pump dose valves did
not actuate.
Motor could not drive
pumps and linear
actuator.
Pump stroke length is
shortened by mechanical
system tolerance.
Pump dose valves did
not actuate.
Pump is filled with thick
paint and could not drive
piston to end of stroke.
Motor or drive is worn or
damaged.
There is a restriction
in the hose or gun that
is preventing the pump
from dispensing at it's
target rate.
Troubleshooting
Solution
Ensure that at least 85
PSI is being supplied to
the dosing valves.
Check for an obstruction
downstream of the pump
that would increase
pressure. Ensure the
feed pressure is within
1/2 – 1/3 of the target
pressure.
There is no fluid pressure
at the outlet of the pump,
run the pump at a lower
pressure to fill the lines.
Check that the feed
pressure is not more
than 1/2 – 1/3 greater
than the target pressure.
No action required.
Verify air pressure to
solenoid valves. Verify
the valves are actuating.
Verify motor is driving
the pump.
Verify correct assembly
of linear actuator and
pump piston rods. See
pump manual.
Visually inspect valves
to ensure they are
operating properly; verify
they have air pressure
above 85 psi (0.6 MPa,
6.0 bar).
Observe motor and drive
assembly to verify that
the motor is generating
force.
Check for restrictions in
the hose along the entire
fluid path after the pump
and also that the gun is
triggered.
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