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MAINTENANCE
43
CHECK VALVES
Check valves are used to prevent reverse chemical flow. Reverse chemical flow can occur from
backpressure and crossover. Inside the check valve is a spring and a ball. To test the function, depress
the ball. The ball should move freely with slight resistance and spring back. If a one-way check valve fails
to function properly, it should be replaced. The arrow on the check valve indicates the desired direction of
chemical flow. Check valves cannot be repaired or rebuilt.
IMPORTANT: BEFORE INSPECTING CHECK VALVES, BE SURE ALL BALL VALVES ARE CLOSED.
FLOW CONTROLLERS
When removing or replacing flow controllers be sure to use two wrenches to prevent turning or breaking of
adjacent parts and fittings. Thoroughly clean flow controller with
DK 817 solvent after removing from the
gun. Check piston orifice for clogs. Check the flow controller by depressing the piston. Use a small blunt
probe to check the action of the piston. A pencil eraser or wood dowel works well. Be careful not to distort
the orifice or piston face. The piston should have resistance and spring back. If the piston does not move
freely or "hangs up", the flow controller should be replaced. Flow controllers cannot be rebuilt.
IMPORTANT: BEFORE INSPECTING FLOW CONTROLLERS, BE SURE ALL BALL VALVES ARE
CLOSED.
HOSES
While no maintenance on hoses is possible, hoses must be handled carefully, especially when not under
pressure because the hose has a tendency to kink. When under pressure this is less likely to happen. The
hoses must not be subjected to bending radii less than nine inches. Hoses must not be permitted to lie on
plant floors because of the heat sink effect and potential damage from other equipment. Constant scraping
of stainless steel braid on concrete also has a damaging effect.
STRAT ASSEMBLIES
Within the Strat assemblies are filters. The filters are canister type with removable filter screen barrels. It is
rare that filters need replacement but replacement can occur. The SLUG PRO gun must be depressurized
before servicing or replacing the filters. Contact FSI for assistance with depressurizing any equipment and
replacement of filters. Filters CANNOT be used interchangeably.
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Summary of Contents for PROFESSIONAL Series
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Page 7: ...PROCESS DESCRIPTION ...
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Page 11: ...EQUIPMENT DESCRIPTION ...
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Page 17: ...CHEMICAL PREPARATION STORAGE HANDLING ...
Page 21: ...INSTALLATION ASSEMBLY ...
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Page 25: ...PRODUCTION AND QUALITY CONTROL ...
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Page 34: ...29 www foamsupplies com www ecomatetechnology com 1 800 325 4875 ...
Page 35: ...CHANGING CHEMICAL CYLINDERS ...
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Page 41: ...MAINTENANCE ...
Page 49: ...TROUBLESHOOTING ...
Page 57: ...SAFETY HANDLING ...
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Page 63: ...EQUIPMENT DRAWINGS PARTS ...
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