
Rev. Date: 1/3/12
Page 20
MODEL #4200-D
Airlock:
(Seal Replacement)
The purpose of the airlock seal is to trap air and fiber until it rotates 180
O
to the 6:00 o'clock position.
At this point, fiber is pushed by air from the blower, out of the chamber. Worn or damaged seals allow
air and fiber to escape back into hopper, thus reducing production and coverage. When it is necessary
to replace seals, follow these directions:
Remove chain and air hoses from both input and output of airlock. Using a 9/16” socket, remove
hold down bolts from airlock. Lower the front of the airlock down by loosening the jamb nuts and
turning the liftbolts counter clockwise. Slide the airlock out of the machine. (See illustration 10) Airlock
rotor plates that are damaged (bent) will need replaced. (Refer to Rotor Plate Replacement below.)
Take out rubber seal by removing seven plate fastening bolts and nuts and top plate. The base plate
will remain attached to airlock shaft. To install a new seal, reverse procedure. Seal should be inserted
tight against the back base plate, pressing the lower tabs of the seal down under the adjacent seal with
a flat blade screwdriver. Make sure all bolt holes are aligned while each side of seal is equally pressed
against the end plates, before tightening bolts. Seal should be bent forwards for
counter clockwise
rotation. (See illustration 12)
Illustration 10
Illustration 11
Base Plate Replacement:
1. Remove damaged baseplate assembly from shaft using
ratchet drive wrench with extension and 9/16" socket.
2. Check seal for wear and damage. (Installing seal and top
plate on the bench is quick and easy). Remove bolts
from plate assembly and replace with new seal. Make
sure seal and top plate are assembled on
correct
side of
base plate before assembling in airlock. Seal should
press backward towards top plate when installed cor-
rectly into airlock chamber. (Illustration 12)
3. Install the rotor plate assembly into the airlock. The
airlock runs
counter clockwise
viewing it from the
sprocket drive shaft. (Illustration 12) Align the base plate
with holes on airlock shaft using a tapered punch.
Cau-
tion:
Do not mount rotor plate backwards. If installed
Illustration 12
(
Note:
Entire rotor plate assembly
may be removed and replaced. This
procedure maybe easier than
replacing just the seals.)
Lift Bolt &
Jamb Nut
Airlock
Hold Down Bolts
Chain
Air Hose & clamps
Содержание 4200-D
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