Empty And Flush Entire System; Of Job) - Graco XM Series Repair Parts

Flush

Empty and Flush Entire System

(new sprayer or end of job)
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To avoid fire and explosion, always ground equipment
and waste container. To avoid static sparking and
injury from splashing, always flush at the lowest
possible pressure.
Hot solvent may ignite. To avoid fire and explosion:
• Flush equipment only in well-ventilated area.
• Ensure main power is off and heater is cool
before flushing.
• Do not turn on heater until fluid lines are clear of
solvent.
NOTE:
• If system includes heaters and heated hose, turn
them off and allow to cool before flushing. Do not
turn on heaters until fluid lines are clear of
solvent.
• Use the lowest possible pressure when flushing to
avoid splashing.
• Before color change or shutdown for storage, flush
at a higher flow rate and for a longer time.
• To flush only mix manifold, follow the Flush Mixed
Manifold, Hose, and Spray Gun procedure on
page 18.
Guidelines
Flush new systems if coating materials will be
contaminated by 10W oil.
Flush system when any of the following situations occur.
Flushing will help prevent materials from clogging the
line between hoppers and pump inlets.
• Anytime sprayer will not be used for more than one
week
• If materials used will settle
• If using thixotropic resins that require agitation
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Procedure
1. Follow Pressure Relief Procedure, page 17, and
Flush Mixed Manifold, Hose, and Spray Gun
procedure on page 18. Engage trigger lock. Turn
main pump air regulator (CD) fully
counter-clockwise to shut off.
NOTE: When flushing coating materials, remove pump
fluid filters, if installed, and soak in solvent to decrease
cleaning time. If flushing a new system, leave filters in
place. Proceed with Step 2.
2. Move circulation return lines to separate fluid
containers to pump remaining fluid out of system.
3. Increase main pump air regulator (CD) pressure to
30 psi (21 kPa, 2.1 bar).
4. Select . Press
When running pumps independently set to
. Press and
NOTE: If sprayer does not start with static pressure,
increase air pressure by 10 psi (69 kPa, 0.7 bar)
increments. To avoid splashing do not exceed 40 psi (28
kPa, 2.8 bar).
CD
air regulator
.
or
as needed to clean.
313289W