PNEUMATIC UNLOADING PROCESS
NOTICE When pressurizing vessel, look and listen for air leaks. If any air leaks are found, shut down immediately and repair the leak.
16. Open aeration valve on front hopper. 17. SLOWLY open front hopper discharge valve. 18. Close aeration valve on center hopper.
DANGER Do not exceed the maximum working pressure. If pressure eises above the maximum working pressure, shut down immediately and invesƟgate.
19. When tank pressure begins to drop rapidly, close front discharge valve. 20. Purge unit by opening all aeration valves and opening and closing dis-charge valves rear to front. 21. Open blow down line to return the unit to atmospheric pressure.
CAUTION Before opening blow down line valve, make sure no one is in or around the area of the blow down exhaust port. Dust and flying debris could cause personal injury.
22. Disengage blower or compressor.
DANGER Always relieve pressure in discharge line and the receiving container before disconnecƟng the product discharge hose.
23. Disconnect and stow discharge hose. 24. Close all valves except the blow down valve.
19
Made with FlippingBook Annual report maker