Startup - Graco PD44 Operation & Maintenance Manual

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
F . 10: Top View of Metering Valve with Top Section
IG
Removed
2. Perform Ratio Check, page 23.
3. Install mixer and shroud.
4. Pressurize the A and B material feed systems con-
nected to the metering valve to prime the system.
See page 3 for maximum inlet feed pressures.
313876L
5. Dispense several full stroke shots until material is
air-free and has good shut-off at the nose.
NOTE: Very viscous, compressible materials may con-
tinue to drool after system is primed. Reduce 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
material is air-free. Remove oil from cups before pro-
ceeding.
Startup
21