User's Manual

Operation

3A2175A 39

Flushing

• Flush out old fluid with new fluid, or flush out old

fluid with a compatible solvent before introducing

new fluid.

• Use the lowest possible pressure when flushing.

• All fluid components are compatible with common

solvents. Use only moisture-free solvents. See

Accessories on page 91 for list of wetted compo-

nents to verify compatibility of solvent with wetted

materials. See solvent manufacturers information for

material compatibility.

• To flush feed hoses, pumps, and heaters separately

from heated hoses, set PRESSURE RELIEF/DIS-

PENSE valves (SA, SB) to PRESSURE

RELIEF/CIRCULATION . Flush through bleed

lines (N).

• To flush entire system, circulate through gun fluid

manifold (with manifold removed from gun).

• 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 14.

• Solvent pails used when flushing: follow your local

code. Use only metal pails, which are conductive,

placed on a grounded surface. Do not place pail on

a nonconductive surface, such as paper or card-

board, which interrupts grounding continuity.

• To maintain grounding continuity when flushing or

relieving pressure, hold a metal part of dispense

gun firmly to the side of a grounded metal pail, then

trigger gun.

Flush equipment only in a well-ventilated area. Do not

dispense flammable fluids. Do not turn on heaters

while flushing with flammable solvents.

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