Air Dryers—A-4400 Series Technical Bulletin
7
3. Use the expected life calculated in Step 2 to determine the
replacement date, and record this date on the servicing label on the
carbon filter element.
4. Remove the red plastic dust cap from the carbon filter pipe
connection.
5. With the black sealing washer in position on the base of the carbon
filter element, screw the element onto the male pipe thread and hand
tighten to complete the installation.
Table 2: Carbon Filter Element Life
Carbon Filter Element
Code Number
Flow
Capacity
Element Life
A-4000-147
10 scfm (4.7 L/s)
4,000 scfm-Days (1,888 L/s-Days)
A-4000-146
20 scfm (9.4 L/s)
13,000 scfm-Days (6,136 L/s-Days)
The automatic condensate drain trap assembly has a 1/8 in. internal NPT
drain connection and the coalescing oil removal filter assembly
(on air dryers with an optional factory mounted Air Purification System)
has a 1/8 in. external NPT drain connection. Two styles of couplers are
available for connecting the drain line to the coalescing oil removal filter
assembly if needed: the F-400-20 kit is a 1/8 in. external NPT x 1/8 in.
internal NPT coupler, and the F-400-10 kit is a 1/8 in. internal
NPT x 1/4 in. O.D. compression coupler. Both coupler kits must be
ordered separately.
Attach tubing to the connections on the automatic condensate drain trap
assembly and the coalescing oil removal filter assembly (if present),
keeping the runs as short as practical in order to reduce back pressure on
the automatic drains. Use separate drain lines for the automatic
condensate drain and the coalescing oil removal filter drain; never connect
the lines together.
Note: An override feature is incorporated in the coalescing oil removal
filter and automatic condensate drain trap, which allows manual
draining of the bowl. To activate the override, it will be necessary
to remove the tubing and connections from the 1/8 in. NPT drain
connection at the bottom of the bowl. Then, using a 1/8 in.
diameter or smaller rod, insert it up into the drain connection until
it contacts the override needle. This will cause the bowl to drain.
When the bowl has been drained, replace the connections and
tubing.
Drain
Connections
