Graco P20-VM User Manual

Troubleshooting
309474U 11
Troubleshooting
Relieve the pressure (page 10) before checking or repairing the equipment.
To repair the regulator, refer to page 12.
Problem Cause Solution
Drop in fluid outlet pressure. Ruptured diaphragm (15). Replace diaphragm.
Air escaping (pneumatic regulators
only).
Check air hose and connections.
Replace piston seal (21).
Fluid outlet pressure increases to
level of fluid inlet pressure.
Valve ball (5) and seat (2) are worn
or stuck open.
Clean ball and seat. Replace worn or
damaged parts.
Fluid leaking from upper housing. Ruptured diaphragm (15). Replace diaphragm.

Graco P20-VM Specifications

General

Brand	Graco
Model	P20-VM
Category	Controller
Language	English