Troubleshooting - Graco E-Flo DC 333389E Instructions - Parts Manual

Troubleshooting

Troubleshooting
Troubleshooting Troubleshooting
• Follow the Pressure Relief Procedure, page
14 before checking or servicing the equipment.
• Check all possible problems and causes before
disassembly.
Problem Problem Problem
Pump output low on both strokes.
Pump output low on only one stroke.
No output.
Pump operates erratically.
Pump will not operate.
16
Cause Cause Cause
Inadequate power.
Exhausted fluid supply.
Clogged fluid outlet line, valves, etc.
Worn piston packing.
Held open or worn ball check valves. Check and repair. See lower manual.
Worn piston packing.
Improperly installed ball check
valves.
Exhausted fluid supply.
Held open or worn ball check valves. Check and repair. See lower manual.
Worn piston packing.
Inadequate power.
Exhausted fluid supply.
Clogged fluid outlet line, valves, etc.
Fluid dried on piston rod.
• The LED on the motor blinks if an error is detected.
See Error Error Code Error Code Troubleshooting Code Troubleshooting in the motor Troubleshooting
manual for more information.
Solution Solution Solution
See Power Requirements, page 8
Refill and reprime pump.
Clear.
Replace. See lower manual.
Replace. See lower manual.
Check and repair. See lower manual.
Refill and reprime pump.
Replace. See lower manual.
See Power Requirements, page 8
Refill and reprime pump.
Clear.
Disassemble and clean pump. See
lower manual. In future, stop pump
at bottom of stroke.
.
.
333389E