Graco 25M404, Instructions Manual

Page: 10 / 32

Installation
10 3A6711C
Pre-Installation Procedure
1. Relieve pressure , page 9.
2. Close shut-off valve (B, F
IG
. 6, page 8).
3. Ground the hose and reel or console.
Leave at least two threads bare when
using PTFE tape. The bare threads
ensure a ground is maintained.
4. Flush equipment. See Flushing , page
10.
Flushing
The equipment was tested with lightweight
oil, which is left in the fluid passages to
protect parts. To avoid contaminating your
fluid, flush the equipment with a compatible
solvent before using it.
1. Close the fluid shut-off valve (B, F
IG
. 6,
page 8) at each dispense position.
2. Make sure:
•
the main fluid outlet valve at the
pump is closed.
•
the air pressure to the pump motor
is adjusted to minimize the system
flow rate without the metered
dispense valve attached.
•
the air valve is open.
3. Slowly open the main fluid outlet valve.
a. Place the hose end (with no
metered dispense valve connected)
into a container for waste oil.
b. Secure the hose in the container so
it will not come out during flushing.
c. If you have multiple dispense
positions, first flush the dispense
position farthest from the pump and
work your way toward the pump.
4. Slowly open the shut-off valve (B) at the
dispense position. Flush out a sufficient
amount of oil to ensure that the entire
system is clean; then close the valve.
5. Repeat Step 4 at all other positions.
NOTICE
•
If this is a new installation or if the fluid
lines are contaminated, flush the lines
before you install the metered
dispense valve. Contaminated lines
could cause the metered dispense
valve to leak.
•
Never dispense compressed air with
metered dispense valve. Dispensing
compressed air will damage the
metered dispense valve.