27
4.5 Flushing
Bypass
Flushing bypass
Unit bypassed
Isolation valves are closed (Handles in horizontal
position) and bypass is open. Turn screw in
horizontal position for flushing of primary system.
Unit in normal operation (Open to primary system)
Isolation valves are opened (Handles in vertical
position) and bypass valve is closed with screw in
vertical position. HIU is open to primary system for
normal operation.
