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Repair

Repair

Repair

Repair

NOTE:

NOTE:

NOTE: To repair the agitator, see your separate
agitator manual.

NOTE:

NOTE:

NOTE: Repair Kit 24J886 is available. Order the kit
separately. Kit parts are marked with an asterisk, for
example (3*). For the best results use all the parts
in the kit.

NOTE:

NOTE:

NOTE: Use multi-purpose lithium based grease
where ever lubrication is required. Order Part No.
111920.

1.

Disconnect the main air line to the speed
controller.

2.

Disconnect the tube (27) connecting the speed
controller and air motor.

3.

Unscrew the adjustment nut (15) from the upper
housing (2). Turn the knob (16) fully clockwise
(inward) to access the o-ring (18) on the bottom
plate of the seat (14). Remove the o-ring and
replace with the new o-ring (18*). Lubricate the
o-ring.

4.

Remove the large o-ring (19) on the upper
housing (2). Replace with a new o-ring (19*).
Lubricate the o-ring.

5.

Unscrew the upper housing (2) from the lower
housing (1). The drive shaft (4) and cam arms (8)
may come out of the lower assembly.

6.

Remove the two ball bearing assemblies (3, 20)
from the drive shaft (4). Replace with the new
ball bearing assemblies. Install the larger ball
bearing assembly (3) on the bottom of the shaft.
Install the smaller ball bearing assembly (20*) on
the top of the shaft, above the large washer (12).

NOTE:

NOTE:

NOTE: The ball bearing assemblies each consist
of one bearing and two washers. Place one
washer above the bearing and the other washer
below the bearing before installing the assembly.

7.

Push the needle (13) out of the upper housing
(2) from the top. Using an o-ring pick, remove
the u-cup (11) and o-ring (33) from the upper
housing. Lubricate the new o-ring (33*) and
u-cup (11*) and install in the upper housing. The
lips of the u-cup must face up.

8.

Lubricate the new needle (13*) and install in the
upper housing (2) from the bottom, being sure to
align the flat face on the needle with the mating
flat surface in the housing.

9.

Ensure that the cam arms (8) align with the
groove on the bottom side of the large washer
(12). Install the drive shaft (4) and cam arm
assembly into the lower housing (1), making sure
the bearing (3*) seats fully in the recess of the
housing.

10. Screw the upper housing (2) fully onto the lower

housing (1).

11. Turn the adjustment knob (16) all the way

counterclockwise (outward). Screw the
adjustment nut (15) fully onto the upper housing
(2).

12. Connect the air tubing (27) between the speed

controller tube connector (29) and the air motor
tube connector (21).

13. Return the unit to service. Connect the main air

line to the quick-disconnect fitting (28) on the
speed controller.

ti17005a

3A1315E

7

Summary of Contents for 24G621

Page 1: ...automatically maintain maintain maintain the the the speed speed speed of of of an an an air air air powered powered powered agitator agitator agitator For For For professional professional profession...

Page 2: ...Contents Contents Contents Installation 3 Operation 5 Troubleshooting 6 Repair 7 24G621 Kit Parts 8 Technical Data 10 Notes 11 Graco Standard Warranty 12 2 3A1315E...

Page 3: ...NOTE If you are using an air line lubricator install it in the air line upstream of the speed controller 1 Remove the air motor top cap A and needle valve B using the multi function wrench 26 Store th...

Page 4: ...that the drive shaft hex C engages the hex socket D in the flange connector Screw the base of the speed controller into the threads at the top of the air motor until hand tight TI17259a 1 6 Connect th...

Page 5: ...Turn the knob counterclockwise outward to increase agitator speed Turn the knob clockwise inward to decrease agitator speed Once the desired agitator speed is set the speed controller will maintain th...

Page 6: ...ntain a consistent speed or the speed rapidly fluctuates Replace the needle 13 u cup 11 and o ring 33 using Repair Kit 24J886 Upon startup the motor runs away for a few seconds before the speed contro...

Page 7: ...smaller ball bearing assembly 20 on the top of the shaft above the large washer 12 NOTE NOTE NOTE The ball bearing assemblies each consist of one bearing and two washers Place one washer above the bea...

Page 8: ...djusting 1 18 117610 O RING chemically resistant fluoroelastomer 0 816 in 20 7 mm OD 1 19 102895 O RING chemically resistant fluoroelastomer 1 5 in 38 mm OD 1 20 BALL BEARING 1 21 C19407 CONNECTOR 1 4...

Page 9: ...24G621 Kit Parts ti17005a 3A1315E 9...

Page 10: ...7 bar Minimum air supply pressure 70 psi 0 5 MPa 4 9 bar Maximum speed 1000 rpm Maximum speed controller air temperature 130 F 55 C Main air inlet size 1 8 npt quick disconnect fitting Speed control...

Page 11: ...Notes Notes Notes Notes 3A1315E 11...

Page 12: ...ARRANTY WARRANTY WARRANTY AND AND AND DISCLAIMS DISCLAIMS DISCLAIMS ALL ALL ALL IMPLIED IMPLIED IMPLIED WARRANTIES WARRANTIES WARRANTIES OF OF OF MERCHANTABILITY MERCHANTABILITY MERCHANTABILITY AND AN...

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