Flushing - Graco VRM 24F872 Instructions Manual

Flushing

Flush equipment only in a well-ventilated area. Do not
dispense flammable fluids. Do not turn on heaters
while flushing with flammable solvents.
Flush out old fluid with new fluid, or flush out old fluid
with a compatible solvent before introducing new fluid.
All fluid components are compatible with common sol-
vents. Use only moisture-free solvents. See Technical
Data on page 86 for list of wetted components to verify
compatibility of solvent with wetted materials. See sol-
vent manufacturers information for material compatibil-
ity. To prevent moisture from reacting with isocyanate,
always leave the system dry or filled with a mois-
ture-free plasticizer or oil. Do not use water. See
Important Two-Component Material Information on
page 8.
Grounding the solvent pails used when flushing: follow
your local code. Use only metal pails, which are conduc-
tive, placed on a grounded surface. Do not place pail on
a nonconductive surface, such as paper or cardboard,
which interrupts grounding continuity.
If flushing with a compatible solvent, perform the follow-
ing procedure.
1. Perform Shutdown procedure, page 44.
2. Close the feed system ball valve at inlet near the
pump lower.
3. Connect solvent flush feed system to unused inlet
port near the pump lower.
4. Open solvent flush ball valve.
5. Perform Startup procedure, page 24.
6. Press repeatedly to select Operator Mode
then press to accept.
7. Press to enter editing mode.
8. Navigate to the flow rate value, change the value to
50-75% of the maximum flow rate, then press
to accept.
313873J
9. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of dispense
valve firmly to the side of a grounded metal pail,
then press . Continue to dispense until the sys-
tem is thoroughly flushed then press
dispensing.
10. Close the solvent flush ball valve.
11. Disconnect solvent flush feed system.
12. Open the feed system ball valve.
13. Perform Priming procedure, page 25.
Flushing
to stop
43