Repair; Before Beginning Repair; Pressure Relief Procedure - Graco Reactor E-20 Series Manual

Repair

Repair
Repairing this equipment requires access to parts
that may cause electric shock or other serious injury if
work is not performed properly. Have a qualified elec-
trician connect power and ground to main power
switch terminals, see operation manual. Be sure to
shut off all power to the equipment before repairing.

Before Beginning Repair

1. Flush if necessary; see Flushing.
2. Park component A pump.
a. Press .
b. Trigger gun until pump A stops. After fluid pres-
sure drops below 700 psi (7.9 MPa, 79 bar),
motor will run until component A pump is at bot-
tom of its stroke, then shut off.
c. Check ISO reservoir for component A pump. Fill
wet cup on component B pump. Refer to Reac-
tor Operation manual 312065.
3. Turn main power OFF
4. Relieve pressure.

Pressure Relief Procedure

1. Relieve pressure in gun and perform gun shutdown
procedure. See gun manual.
26
.
2. Engage gun piston safety lock.
3. Close gun fluid manifold valves A and B.
4. Shut off feed pumps and agitator, if used.
5. Turn PRESSURE RELIEF/SPRAY valves (SA, SB)
to PRESSURE RELIEF/CIRCULATION
fluid to waste containers or supply tanks. Ensure
gauges drop to 0.
SA
6. Disconnect gun air line and remove gun fluid mani-
fold.
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ti2421a
. Route
SB
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