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Maintenance
312062W 45
Fluid Inlet Strainer Screen
The inlet strainers filter out particles that can
plug the pump inlet check valves. Inspect the
screens daily as part of the startup routine, and
clean as required.
Use clean chemicals and follow proper stor-
age, transfer, and operating procedures, to
minimize contamination of the A-side screen.
1. Close the fluid inlet valve at the pump inlet
and shut off the appropriate feed pump.
This prevents material from being pumped
while cleaning the screen.
2. Place a container under the strainer mani-
fold (59d) to catch fluid. Remove the
strainer plug (59j).
3. Remove the screen (59g) from the strainer
manifold. Thoroughly flush the screen with
compatible solvent and shake it dry.
Inspect the screen. If more than 25% of the
mesh is blocked, replace the screen.
Inspect the gasket (59h) and replace as
required.
4. Ensure the pipe plug (59k) is screwed into
the strainer plug (59j). Install the strainer
plug with the screen (59g) and gasket (59h)
in place and tighten. Do not overtighten.
Let the gasket make the seal.
5. Open the fluid inlet valve, ensure that there
are no leaks, and wipe the equipment
clean. Proceed with operation.
* See Reactor Repair-Parts manual 312063 for
fluid filter screen replacements.
Clean the A-side screen only during
daily startup. This minimizes moisture
contamination by immediately flushing
out any isocyanate residue at the start
of dispensing operations.
F
IG
. 6. Fluid Inlet Strainer
59g*
59h
59j
59k
ti9886a
59d