Troubleshooting; System Troubleshooting - Graco ProMix PD2K Repair Parts Manual

Troubleshooting

NOTE: Check all possible remedies before disassembling the system.

System Troubleshooting

Problem
Unit will not operate.
Pump output low on both strokes.
Pump output low on only one
stroke.
No output.
Pump operates erratically.
3A2800B
Cause
Inadequate power supply.
Power switch is off.
Main power is shut off.
Exhausted fluid supply.
Clogged fluid outlet line, valves,
etc.
Fluid dried on piston rod.
Inadequate power supply.
Exhausted fluid supply.
Clogged fluid outlet line, valves,
etc.
Worn piston packings.
Held open or worn dosing valves.
Worn piston packing.
Improperly installed dosing valves. Check solenoid connections to
Exhausted fluid supply.
Held open or worn dosing valves.
Worn piston packing.
Troubleshooting
Solution
See Technical Data, page 59.
Turn switch on.
Turn main power switch on.
Refill and reprime pump.
Clear.
Disassemble and clean pump.
See pump manual. In future, stop
pump at bottom of stroke.
See Technical Data, page 59.
Refill and reprime pump.
Clear.
Replace. See pump manual.
Check and repair. See valve
manual.
Replace. See pump manual.
valves. See pump manual.
Refill and reprime pump.
Check and repair. See pump
manual.
Replace. See pump manual.
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