Graco 24M178 User Manual

Operation 

1.

Attach air hose(s) to air regulator outlet valve 
289165.

2.

Attach air hose to main shut-off valve 288798.

3.

Open main shut-off valve 288798.

4.

Turn the T-hand adjusting screw in or out to adjust 
regulator to desired setting.

5.

Open outlet valve 289165 to supply air to spray 
guns or tool.

6.

With air flowing, readjust air pressure regulator if 
necessary.

7.

Turn off unit when not in use. Follow Pressure 
Relief Procedure, page 8.

1.

Attach air hose(s) to outlet elbow fitting 120375.

2.

Attach air hose to inlet elbow fitting C19024.

3.

Open main shut-off valve 288798.

4.

Turn off unit when not in use. Follow Pressure 
Relief Procedure, page 8.

The automatic drain is equipped with a float actuated 
device which automatically ejects liquid contaminates 
under pressure.

The differential pressure drop indicator provides early 
detection of a clogged coalescing filter element. As the 
filter element becomes clogged, the red indicator starts 
to rise while air is flowing through the unit. When the 
pressure drop across the element reaches 10-12 psi 
(69-83 kPa, 0.7-0.8 bar), the red indicator will be in full 
view, and the element should be replaced. Failure to 
replace the element when the pressure drop exceeds 
10 psi (69 kPa, 0.7 bar) will affect your air quality and 
tool efficiency.

Do not exceed the Maximum Incoming Air Pressure 
of the equipment. Over pressurizing can cause 
component rupture and serious injury.