Graco 15X303, Instructions And Parts Manual

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Operation (ProMix 2KS Only)
312782J 7
Operation (ProMix 2KS
Only)
Settings and Adjustments
Set the actuating air to at least 75 psi (0.52 MPa, 5.2
bar) and start the pump. Adjust the pump speed and
pressure to obtain the desired flow rate. Always use the
lowest pump speed necessary to get the results you
want.
To decrease needle travel, turn the cap (11, see pages
10, 11, and 13) clockwise; to increase, turn counter-
clockwise. The valve is factory set at one open turn.
The
maximum setting is four turns open.
Pressure Relief Procedure
1. Shut off the fluid supply to the dispense valve.
2. Actuate the dispense valve to relieve fluid pressure
in the valve.
3. Relieve fluid pressure upstream and downstream of
the dispense valve. See your system operation
manual.
4. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after follow-
ing the steps above,
very slowly loosen tip guard
retaining nut or hose end coupling to relieve pres-
sure gradually, then loosen completely. Clear hose
or tip obstruction.
Operation (ProMix PD2K
Only)
See the ProMix PD2K Electronic Proportioner Operation
manual (332562) for operating instructions.
Maintenance
Clean the Dispense Valve Daily
An important part of the care and maintenance of your
automatic dispense valve is proper flushing. Flush the
valve daily with a compatible solvent until all traces of
fluid are removed from the valve passages.
Relieve the
pressure before flushing.
Clean the outside surfaces of the valve by wiping with a
soft cloth dampened with a compatible solvent.
Flushing
Before flushing, be sure the entire system and flushing
pails are properly grounded. Refer to
Grounding on
page 3. Relieve the pressure . Always use the lowest
possible fluid pressure, and maintain firm metal-to-metal
contact between the dispense valve and the pail during
flushing to reduce the risk of fluid injection injury, static
sparking, and splashing.
Start the pump and flush the system with a compatible
solvent as explained in the instructions for your pump.
Check the system under pressure for leaks; if any are
found,
relieve the pressure and repair the leaks. Pres-
surize the system again and make sure the leaking has
stopped.
NOTICE
Be sure the solvent used is compatible with the fluid
being dispensed, to avoid clogging the valve’s fluid
passages.
NOTICE
Never immerse the entire dispense valve in solvent.
Immersing in solvent removes lubricants and may
damage the o-rings.