Flushing Procedure With An External Water Supply; Cylinder Maintenance - CaptiveAire EWC Installation, Operation And Maintenance Manual

Flushing Procedure with an External Water Supply

1. Check the pressure gauge on each cylinder to ensure it has been depressurized.
2. Remove the vent plug, clean thoroughly with warm soapy water, and rinse with water. Dry thoroughly
with dry air or nitrogen and set aside.
3. Disconnect the Primary Actuator Kit (PAK) stainless steel hose from the primary cylinder valve.
4. Remove all cylinders from the system. Refer to "Removing a Cylinder" on page 69.
5. Attach a suitable container (or hose to a container or other point of disposal) at each pipe outlet where
a nozzle was installed, and at each cylinder inlet supply tee, to collect the water discharge.
6. Connect the external clean water supply to the vent plug tee.
7. Turn on the external water supply and run for one minute.
8. Turn off external water supply.
9. Remove containers or hoses from all collection points.
10. Connect a nitrogen service tank to system piping service port and blow out the discharge piping to
remove all excess water. Disconnect the nitrogen service tank.
11. Install new or recharged cylinders at each cylinder location.
12. Re-install vent plug.
13. Re-install nozzles, ensuring that all nozzles are in the correct location and properly aimed. Refer to
"Nozzles" on page 39 for nozzle placement and aim directions.
14. Complete the Start-up/Test Procedure. Refer to "Start-up/Test Procedure" on page 60.

Cylinder Maintenance

EWC cylinders need to be recharged or replaced every 12 years, and after any system discharge.
Never assume that a cylinder is unpressurized. Handle all cylinders as if they are pressurized until
verified otherwise. Pressurized cylinders are extremely hazardous.
When performing any cylinder maintenance procedure, the cylinder must be properly secured to a
rigid structure capable of withstanding the full thrust that would result if the valve were to open
inadvertently.
Any time a cylinder assembly is unsecured, the anti-recoil plate must be installed on the valve
outlet to provide a safe, controlled discharge in the event of accidental actuation.
Failure to take proper precautions could result in death, serious personal injury and/or property
damage.
WARNING!
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