Startup - Graco PD44 Operations & Parts List

Metering valve for high wear material

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Startup

1. Fill the spool valve ports with compatible lubricant.

Consult with your material supplier to select an

acceptable lubricant. Regularly verify that lubricant

is present.

Spool Valve Ports/Oil Cups

. 8: Top View of Valve with Top Section Removed

1. Perform the ratio check procedure. See Ratio

Check on page 17.

2. Install the static mixer and shroud to the metering

valve outlet nose (L) as shown in Figure 9.

. 9: Install Static Mixer

Metering Rod Ports

3. Pressurize the A and B fluid supply pumps (AA, AB)

connected to the metering valve (AC) to prime the

system. See Model Information on page 3 for max-

imum inlet working pressures.

4. Dispense several full stroke shots until the material

is air-free and has good shut-off at the nose.

NOTE: Very viscous, compressible materials may con-

tinue to drool after the system is primed. Reduce the

flow rate as required to produce air-free dispense.

NOTE: Very thin materials may require tilting the valve

greater than 45 degrees and dispensing shots until the

material is air-free. Remove oil from the spool valve oil

cups before proceeding. See Figure 8.

3A7284B

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