Graco Proportioner 281000

Ensure all equipment is grounded. See Grounding, page 20.

Ensure the area where the system will be cleaned is well ventilated and remove all ignition sources.

All heaters turned off and equipment allowed to cool.

Flush mixed material. See Flush Mixed Material, page 30.

Relieve pressure. See Pressure Relief Procedure, page 24.

Shutdown the sprayer and turn off all power. See Shutdown, page 33.

Clean the external surfaces only using a rag soaked in solvent that is compatible with the spray material and surfaces being cleaned.

Allow enough time for the solvent to dry before using the system.

Sign off on the proportioner cleaning

Once a week check, clean, and replace (if needed) the following filters:

• Both pump filters; see lower manual for instructions.

• Main air inlet manifold filter

1. Close the main air shutoff valve on the air supply line and on the system. Depressurize the air line.

2. Unscrew the serrated ring on filter bowl (210).

3. Remove and replace the filter element (210a). See Air Controls, 258983, page 58.

• Spray gun handle filter; see spray gun manual.

NOTE: Only Xtreme XP lower pumps come with a rod coupling.

Check the Varying Parts table on page 57 for the correct pump sizes.

Remove and replace pump. See page 38.

Adjust the position of the air motor. See page 22.

If changing from one type of XP system to another (for example - changing from XP35 to XP70 or from XP70 to XP35): remove the existing over pressure relief valves (302) and install the correct valves for the new system type. See Replace Over Pressure Relief Valves on page 41.

Change air pressure relief valve as required, depending on ratio. See air relief valve (64) in tables starting on page 50.

Sign off on the mix ratio adjustment