Graco Eagle C Series Instructions-Parts List Manual page 12

WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 10.
PROBLEM
Pump fails to operate.
Pump operates, but out-
put low on both strokes.
Pump operates, but out-
put low on downstroke.
Pump operates, but out-
put low on upstroke.
Erratic or accelerated
pump speed.
* Relieve the pressure, and disconnect the fluid hose. Turn on the air. If the pump starts when the air is turned on, the clog is in
the fluid hose or dispense valve.
Troubleshooting
CAUSE
Inadequate air supply pressure or restricted
air line.
Closed or clogged air valves.
Obstructed fluid hose or gun/valve;
fluid hose ID is too small.
Dirty, worn, or damaged air motor parts.
Obstructed priming tube.
Inadequate air supply pressure or restricted
air line.
Closed or clogged air valves.
Obstructed fluid hose or gun/valve;
fluid hose ID is too small.
Exhausted fluid supply.
Air leaking into supply container.
Fluid too heavy for pump priming.
Worn seals in displacement pump.
Fluid too heavy for pump priming.
Held open or worn intake valve or seal (105). Clear valve; replace seal. See page 18.
Held open or worn piston valve or seal (103). Clear valve; replace seal. See page 18.
Exhausted fluid supply.
Fluid too heavy for pump priming.
Held open or worn piston valve or seal (103). Clear valve; replace seal. See page 18.
Held open or worn intake valve or seal (105). Clear valve; replace seal. See page 18.
Before servicing this equipment, always make sure to
relieve the pressure.
NOTE: Check all possible problems and solutions
before disassembling the pump.
SOLUTION
Increase air supply (see Technical Data on page 30).
See Maximum Working Pressure warning on page 8.
Clear line.
Open valves; clean.
Open, clear.* Use hose with larger ID, or use shorter
hose.
Clean or repair; see pages 20 to 25. Lubricate with
grease.
Open, clear.
Increase air supply (see Technical Data on page 30).
See Maximum Working Pressure Warning on page 8.
Clear line.
Open valves; clean.
Open, clear.* Use hose with larger ID, or use shorter
hose.
Refill and reprime or flush.
Check follow plate or inductor plate seal.
Use inductor or follow plate.
Replace seals. See page 18.
Use inductor or follow plate.
Refill and reprime or flush.
Use inductor or follow plate.