Troubleshooting - Graco Hydra-clean 24V616 Instructions - Parts Manual

Troubleshooting

Troubleshooting Troubleshooting
1. Follow the Pressure Relief Procedure, page
Problem
Problem Problem
Pump fails to operate.
Pump operates, but the output is
low on both strokes.
Pump operates, but the output is
low on the downstroke.
Pump operates, but the output is
low on the upstroke.
Erratic or accelerated pump speed.
* To determine if the fluid hose or gun is obstructed, follow the
Disconnect the fluid hose and place a container at the pump fluid outlet to catch any fluid. Open the hydraulic
supply valve just enough to start the pump. If the pump starts, the obstruction is in the fluid hose or gun.
334187H
12. 2. Check all possible problems and solutions before
Cause
Cause Cause
Restricted hydraulic line or
inadequate hydraulic supply;
closed or clogged valves.
Obstructed fluid hose or gun; fluid
hose ID is too small.
Fluid has dried on the displacement
rod.
Dirty, worn, or damaged motor
parts.
Restricted hydraulic line or
inadequate hydraulic supply;
closed or clogged valves.
Obstructed fluid hose or gun; fluid
hose ID is too small.
Bleeder valve is open.
Worn packings in the displacement
pump.
Held open or worn intake valve.
Held open or worn piston valve or
packings.
Exhausted fluid supply.
Held open or worn piston valve or
packings.
Held open or worn intake valve.
disassembling the pump.
Clear any obstructions; check
that all valves are open; increase
hydraulic supply pressure.
Open, clear*; use a hose with a
larger ID.
Clean; always stop the pump at
the bottom of the stroke; keep the
wet cup 1/3 filled with compatible
solvent.
Clean or repair. See Manual
307158.
Clear any obstructions; check
that all valves are open; increase
hydraulic supply pressure.
Open, clear*; use a hose with a
larger ID.
Close.
Replace packings. See
displacement pump manual
311825 or 311827.
Clear valve; service. See
displacement pump manual
311825 or 311827.
Clear valve; replace packings.
See displacement pump manual
311825 or 311827.
Refill and prime.
Clear valve; replace packings.
See displacement pump manual
311825 or 311827.
Clear valve; service. See
displacement pump manual
311825 or 311827.
Pressure Relief Procedure, page
Troubleshooting
Solution
Solution Solution
12.
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