Graco EcoQuip EQ200T Operation, Repair, And Parts page 25

Problem
Problem Problem
A strong hose recoil occurs
frequently when the blast
control switch is engaged.
334666B
Cause
Cause Cause
The unit is not on a level surface.
The initial pot pressure is not set
correctly.
The Auto-Vent is malfunctioning.
The diaphragm needs to be
flushed.
Troubleshooting
Solution
Solution Solution
Place the unit on a level surface. If this
is impossible, the Auto-Vent must be on
the higher side of the unit.
Confirm that the auto-vent valve is
working and set initial pot pressure 30
psi (2.0 bar, 0.20 MPa) above the blast
pressure.
Perform auto-vent clean-
ing procedure (see
Cleaning the Auto-Vent Valve, page
Perform the diaphragm
flush procedure (see
Flushing the Diaphragm Valve, page
If flushing does not solve the problem, see
Repairing the Diaphragm Valve, page
31).
29).
30.
25