Graco 259079 Operation Manuals page 77

Error Error Type
Code Location
DADX MCM ALARM
DE0X MCM ALARM
F9DX MCM ALARM
H1 Hose ALARM
MH
H4 Hose ALARM
MH
K8NM MCM ALARM
3A1705E
Name Cause
Pump Runaway Flow rate is too large
Pump Cycle Faulty or missing cycle
Switch Fault switch.
Pressure Flow Mix chamber is too large
Cutback for the set pressure.
Low Line Line frequency is below
Frequency 55 Hz.
High Line Line frequency is above
Frequency 65 Hz.
Locked Rotor Locked rotor.
Chemical pump is stuck. Repair or replace pump.
Troubleshooting
Solution
Mix chamber too large for
system selected, use mix
chamber rated for system.
Make sure the system
has chemical and the
feed pumps are operating
correctly.
No material in pumps.
Verify pumps are supplying
chemical. If necessary,
replace or refill drums.
Inlet ball valves are closed.
Open ball valves.
Check wiring between
cycle switch and MCM port
6.
Reference the pressure
flow curves and select a tip
size that is the correct size
for the set pressure.
Check frequency. If
out of tolerance, see
supplied 120/240V
alternator manual for
repair instructions.
Check frequency. If
out of tolerance, see
supplied 120/240V
alternator manual for
repair instructions.
Replace motor. See
System Repair manual.
See System Repair
manual.
77