Install Instructions
Caleffi North America, Inc.
3883 W. Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
8
Leave this manual at the service of users for their use 
9-10-18
The drain valve (code NA39753 - 1 inch or code NA59600 - 2 inch) installed on the drain pipe at the 
base of the steel DISCALDIRT
®
 and DISCALDIRTMAG
®
 air and dirt separator (8) can be used to 
remove any debris that has settled at the bottom of the separator, even while the system is in operation. 
To inspect the internal element of brass DISCALDIRT
®
 and DISCALDIRTMAG
®
 air and dirt separators, 
unscrew the large dirt separation chamber (6) with a 
26 mm hexagon wrench. The internal element can be 
removed for cleaning. Additionally, the brass and steel 
5461 series air and dirt separators have a lever operated 
shut-off drain valve code 538402 FD, and ¾" garden 
hose attachment with plug (7), to drain accumulated 
debris as needed.
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Draining off dirt and ferrous impurities
The dirt separator collection chamber has a drain valve. Using the handle provided it is possible to 
drain off the accumulated dirt particles even with the system in operation.
For the brass and steel 5461 series DISCALDIRTMAG
®
, captured ferrous impurities are easily flushed 
by unclamping the magnetic 
collar and purging. 
To purge the ferrous impurities in the steel 546 and 
NA546 series DISCALDIRTMAG
®
, the flexible magnetic 
stack is removed from the brass dry-well and, with the 
system still running, the drain valve is opened. Aided 
by the system pressure, the dirt and ferrous impurities, 
including magnetite, flushes out quickly and effectively. 








