Graco ProMix PD2K Electronic Operation page 67

Code Type Description
P9F# Alarm Press.
Sens.
Failed Inlet
#
QADX Alarm Differential
Pressure A
Over B
Alarm
QBDX Differential
Pressure B
Over A
332562B
Problem
Inlet pressure
transducer has failed.
Low differential
pressure. This alarm is
active only during Mix
mode.
High differential
pressure. This alarm is
active only during Mix
mode.
Cause
Inlet pressure
transducer has failed or
the pressure is above
the readable range.
There is a leak on the
B side.
The B side pump is
cavitating.
There is a leak on the
A side.
The A side pump is
cavitating.
System Errors
Solution
Relieve system
pressure. Verify
connections, or replace
if reconnecting does
not eliminate the alarm.
Check the system
for internal and
external leaks on all
catalyst manifolds and
plumbing.
Check paint supply on
the B side, increase
paint supply pressure.
Check the system
for internal and
external leaks on all
color manifolds and
plumbing.
Check paint supply on
the A side, increase
paint supply pressure.
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