4.
5.
6.
7.
8.
9.
10.
11.
Using a knife edge, carefully pry off float cap
(See Figure 3).
Pry apart with knife edge.
Clean inside of float. Remove all traces of water
or dirt.
Insure rubber seal is in place in the center of the
float stem (See Figure 4). If the seal comes out,
press it back in place in the recess of the stem.
(Inside view of float)
Replace the float cap (again, be certain the
rubber seal, Figure 4, is in place).
Slide float over float guide.
Snap float cover onto bottom piece.
Install automatic drain into bowl. Be sure O-ring
is in place (between the drain and bowl). Tighten
the plastic retaining nut firmly by hand.
Monitor the automatic drain for proper opera-
tion. If it fails to operate properly, replace with
a new unit.
Note
If the Float Guide inadvertently came apart,
refer to Figure 5 and instructions.
You can confirm the automatic drain is not operating
if the water level in the plastic bowl is higher than
the top of the automatic drain.
To remove water from the float, follow these
instructions. Be careful not to lose or damage any
internal parts of the automatic drain (replacement
parts are not available - complete drain replacement
will be necessary).
Remove automatic drain from plastic bowl by
loosening plastic retaining nut. Keep retaining
nut and O-ring for reassembly later.
Using a knife edge, carefully pry apart the float
cover and bottom piece (See Figure 1).
Slide float off float guide (See Figure 2).
1.
2.
3.
8
Note
Do not wash plastic bowl with automatic drain
installed. The automatic drain includes a float.
If water gets into the float, the automatic drain
may not function properly. Under normal
conditions, water will not enter the float.
However, water can get in the float if the filter
bowl is washed with the drain installed or if air
line contamination causes the drain mecha-
nism to stick.
SERVICE BULLETIN
Figure 2
Float Guide
Float
Figure 1
Float
Cover
Bottom Piece
Pry apart with knife edge.
SB-6-149-B
Replaces SB-6-149-A
HAF-18 AUTOMATIC DRAIN
SERVICE INFORMATION
Figure 3
Cap
Figure 4
Float Stem
Rubber
Seal
