Troubleshooting
Problem
Problem
Problem
Cause
Cause
Cause
Solution
Solution
Solution
Suction line is loose.
Tighten.
Diaphragm (or backup) ruptured.
Replace.
Loose manifolds, damaged seats or
o-rings.
Tighten manifold bolts or replace
seats or o-rings.
Air bubbles in fluid.
Loose diaphragm shaft bolt.
Tighten.
Loose manifold clamps or fluid cover
clamps.
Tighten.
Pump leaks fluid externally
from joints.
Manifold o-rings worn out.
Replace o-rings.
A GFCI has tripped.
Remove the controller from the GFCI
circuit.
Supply power is poor.
Determine and fix the source of the
power problem.
The controller faults or shuts
down.
Operational parameters are
exceeded.
See manual 3A3167 for event codes.
NOTE:
NOTE:
NOTE: For problems with a Variable Frequency Device (VFD), see your VFD manual. For problems with the
Graco Motor Control, see your Operation Manual.
3A3168R
11
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