Empty And Flush Entire System (New Sprayer Or End Of Job) - Graco XM Series Operation Manual

Empty and Flush Entire System (new sprayer or end of job)

Empty and Flush Entire System
(new sprayer or end of job)
NOTE:
• If the 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 sol-
vent.
• Cover fluid container and 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 the fluid manifold, see Flush Mixed
Material, page 36.
Guidelines
Flush new systems if coating materials will be contami-
nated 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
46
Procedure
1. Follow Prime, page 27 and Flush Mixed Material,
page 36, as required. Engage trigger lock. Turn
main pump air regulator (CD) fully counter-clock-
wise to shut off.
2. Move circulation return lines to separate fluid con-
tainers to pump remaining fluid out of system.
3. Increase main pump air regulator (CD) pressure to
20 psi (138 kPa, 1.38 bar).
4. Select . Press
NOTE:
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 35 psi (241 kPa, 2.4
bar).
CD
.
or
as needed to clean.
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