Armstrong 21-312AR Installazione e manutenzione - Pagina 4
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Check the sideways motion of the valve lever in the lever
clip.
Total motion should be about l/32" (l/64" to the left
and to the right of center).
tapping the ears of the valve lever clip VERY LIGHTLY left
or right with a SMALL HAMMER (4 oz.).
8.
Check the seating of the valve.
should easily drop into the orifice with no hang-up on the
edges of the orifice.
lever should be visually parallel to the valve lever clip.
of the lever pin ears by tapping VERY LIGHTLY with a SMALL
HAMMER.
9 .
Use the float screw to assemble the float to the valve
lever.
10.
Remove the cap from the vise, invert it, and assemble it to
the air vent body.
11.
Remove the plug in the cap of the air vent.
Turn the air vent over so that the cap is at the bottom.
12.
13.
Insert a pencil or rod into the plug hole to lift the float.
The float should readily move upward and strike the body
All motion must be free and easy.
wall.
should result in the valve seating in the orifice and no
contact between the float and the body of the air vent.
When moving the float,
up and down.
14.
When the valve is in position to function properly,
disassemble the cap from the body. Remove the float.
the valve VERY L.IGHTLY
produce
a
15.
Replace
the
16.
Put the body gasket in place.
Assemble the cap to the body.
17.
18.
Check the float motion as in step 13 above.
seats
properly, replace
IB-22 9/85
ARMSTRONG 21AR AND 21-312AR AIR VENTS
When the valve is shut, the valve
8) Adjustments maybe made to the front or back
the pencil or rod should travel l/4"
seating
ring.
float.
the
Adjustments
The point of the cone valve
with a SMALL HAMMER (4 oz.) to
plug.
4
can
be
made
Lowering
the
float
If the valve
by
Tap