Graco 24G621 Stücklistenhandbuch

Instructions-Parts

3A1315A

24G621 Agitator Speed Controller

Accessory ENG

Accessory kit to control and automatically maintain the speed of an air-powered agitator.

For professional use only.

Important Safety Instructions

Read all warnings and instructions in this manual

and in your separate agitator manual. Save these instructions.

Patent Pending

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PROVEN QUALITY. LEADING TECHNOLOGY.

Contents

Installation.......................................................... 3

Operation........................................................... 5

Troubleshooting.................................................. 6

Repair................................................................ 7

Kit Parts............................................................. 8

Technical Data ...................................................10

Notes ............................................................... 11

Graco Standard Warranty.................................... 12

23A1315A

Installation

The agitator speed controller ﬁts the following Graco

pneumatic rotary motors:

Motor Part No.

101140

16A871

101388

111310

NOTE: Before installing, ensure that the agitator

air motor has at least 5 in. (12.7 cm) of vertical

clearance and 4 in. (10.2 cm) of horizontal clearance

in all directions around it.

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 these parts in a safe place; they will be

needed if the speed controller is ever removed.

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2. Install the push-to-connect air tube connector

(21) in place of the needle valve.

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3. Screw the compression nut (24) onto the ﬂange

connector (23) ﬁnger-tight. Place the connector

assembly (23, 24) onto the exposed shaft of the

air motor, ﬂange connector side down.

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3A1315A 3

4. Using the allen wrench (25) and multi-function

wrench (26), tighten the compression nut (24)

onto the ﬂange connector at least 1/8 turn past

ﬁnger tight. This provides a ﬁrm connection to

the motor shaft.

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5. Ensure 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.

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

controller tube connector (29) and the air motor

tube connector (21).

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

line to the quick-disconnect ﬁtting (28) on the

speed controller.

43A1315A

Operation

Connect the main air line to the quick disconnect

ﬁtting (28) on the agitator speed controller. Do not

exceed the maximum air inlet pressure of 100 psi

(0.7 MPa, 7.0 bar).

Set the agitator speed using the knob (16) on

the top of the speed controller. 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 that speed by

regulating the airﬂow to the air motor.

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Turn knob counterclockwise

to increase speed. Turn knob clockwise

to decrease speed.

To shut off the agitator, disconnect the air supply or

turn the speed adjustment knob clockwise until it is

fully closed.

3A1315A 5

Troubleshooting

Problem Solution

The speed controller does not adjust for a change in

load, or shuts off before the knob (16) is turned all

the way down.

Remove the needle (13). and liberally lubricate the

needle and o-ring (33) with multi-purpose lithium

based grease.

The speed controller does not maintain 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 controller slows it down.

Ensure that the compression nut (24) and ﬂange

connector (23) are securely tightened to the motor

shaft. See Installation, page 3 .

63A1315A

Repair

NOTE: To repair the agitator, see your separate

agitator manual.

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: 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: 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.

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3A1315A 7

Kit Parts

The kit contains all necessary parts and tools to

install the agitator speed controller.

Ref.

No.

Description Qty

1HOUSING, lower, speed controller 1

2HOUSING, upper, speed controller 1

3* BALL BEARING 1

4 SHAFT, drive 1

5BAR, mounting 2

6SCREW, machine, pan-head; 8–32

x3/4in. (19mm)

7NUT, hex; 8–32 1

8ARM,cam 2

9BEARING, sleeve; bronze 2

10 PIN 2

11* PACKING, u-cup; UHMWPE 1

12 WASHER, speed controller 1

13* NEEDLE, speed controller 1

14 SEAT, needle 1

15 NUT, adjustment 1

16 KNOB, adjusting 1

18* O-RING; chemically resistant

ﬂuoroelastomer; 0.816 in. (20.7

mm) OD

19* O-RING; chemically resistant

ﬂuoroelastomer; 1.5 in. (38 mm) OD

20* BALL BEARING 1

21 CONNECTOR; 1/4 npt(m) x 1/4 in.

(6 mm) OD tube

22 O-RING; chemically resistant

ﬂuoroelastomer; 0.441 in. (11.2

mm) OD

23 CONNECTOR, ﬂange; 3/16 hex

socket

24 NUT, compression 1

25 WRENCH, allen; 3/16 hex 1

26 WRENCH, multi-function 1

Ref.

No.

Description Qty

27 TUBE, nylon; 1/4 in. (6 mm) OD; 2

ft (0.6 m)

28 FITTING, quick-disconnect, air; 1/8

npt(m)

29 CONNECTOR; 1/8 npt(m) x 1/4 in.

(6 mm) OD tube

33* O-RING; buna-N; 0.375 in. (9.5

mm) OD

* These parts are included in Repair Kit 24J886.

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83A1315A

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3A1315A 9

Technical Data

Maximum air supply pressure 100 psi (0.7 MPa, 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 range 100–1000 rpm

Diameter 4in. (102mm)

Height (installed) 4.5 in. (114 mm)

Weight 1.4 lb (0.64 kg)

10 3A1315A

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