Empty and Flush Entire System (new sprayer or end of job)
3A0420H
27
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 the heaters until the fluid lines
are clear of solvent.
•
Cover fluid containers and use the lowest possi-
ble pressure when flushing to avoid splashing.
•
Before color change or shutdown for storage,
circulate the solvent at a higher flow rate and for
a longer time. Change the solvent when it gets
dirty.
•
To only flush the fluid manifold, see Flush Mix
Manifold, Hose, and Spray Gun, page 26.
•
If the machine is inoperable, use drain plugs on
the pump inlet fittings.
Guidelines
Flush new systems if the coating materials will be con-
taminated by mineral oil.
Flushing will help prevent materials from settling or gell-
ing in the pumps, lines, and valves. Flush the system
when any of the following situations occur.
•
anytime the sprayer will not be used for more
than one week (depending on materials used)
•
if the materials used have fillers that will settle
•
if using materials that are moisture sensitive
•
before servicing
•
If the machine is going into storage, replace the
flush solvent with light oil. Never leave the
equipment empty of any fluid.
Procedure
1.
Follow
Prime Empty Sprayer
, page 21 and
Flush
Mix Manifold, Hose, and Spray Gun
, page 26, as
required.
2.
Engage the trigger lock. Turn the main pump air reg-
ulator (CB) fully counter-clockwise to shut off.
3.
Move the recirculation lines (U) to separate fluid
containers to pump remaining fluid out of the sys-
tem.
4.
Open the circulation handle (AC). Increase the main
pump air regulator (CB) pressure to 20 psi (138 kPa,
1.38 bar).
5.
Open the main air shutoff valve (CA).
NOTE: If the sprayer does not start with static pres-
sure, increase the air pressure by 5 psi (35 kPa, 0.35
bar) increments. To avoid splashing, do not exceed
35 psi (241 kPa, 2.4 bar).
CB
TI1949a
r_571100_3A0420A_11a-1
U
CA
