Repair
312063Z 27
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.
• To flush feed hoses, pumps, and heaters separately
from heated hoses, set PRESSURE
RELIEF/SPRAY 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
moisture-free plasticizer or oil. Do not use water.
Proportioning Pumps
NOTE: See your proportioning pump manual for repair
instructions.
1. Shut off , , and heat zones.
2. Flush, page 27.
3. If pumps are not parked, press . Trigger gun
until pumps stop.
4. Turn main power OFF . Disconnect power
supply.
NOTE: Use drop cloth or rags to protect Reactor and
surrounding area from spills.
Flush equipment only in a well-ventilated area. Do not
spray flammable fluids. Do not turn on heaters while
flushing with flammable solvents.
5. Shut off both feed pumps. Close both fluid inlet ball
valves (B).
6. Turn both PRESSURE RELIEF/SPRAY valves (SA,
SB) to PRESSURE RELIEF/CIRCULATION .
Route fluid to waste containers or supply tanks.
Ensure gauges drop to 0.
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