Graco Oven 24G621 User Manual

Instructions-Parts  
24G621 Agitator Speed Controller  
Accessory  
3A1315A  
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  
TI17253a  
PROVEN QUALITY. LEADING TECHNOLOGY.  
 
2. Install the push-to-connect air tube connector  
(21) in place of the needle valve.  
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.  
TI17256a-1  
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.  
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.  
TI17254a-1  
TI17257a-1  
TI17255a-1  
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.  
6. Connect the air tubing (27) between the speed  
controller tube connector (29) and the air motor  
tube connector (21).  
TI17258a-1  
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.  
TI17253a-1  
7. Return the unit to service. Connect the main air  
line to the quick-disconnect fitting (28) on the  
speed controller.  
TI17259a-1  
4
3A1315A  
 
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).  
16  
Turn knob counterclockwise  
to increase speed.  
Turn knob clockwise  
to decrease speed.  
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.  
28  
TI17260a-1  
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 Remove the needle (13). and liberally lubricate the  
load, or shuts off before the knob (16) is turned all  
the way down.  
needle and o-ring (33) with multi-purpose lithium  
based grease.  
The speed controller does not maintain a consistent Replace the needle (13), u-cup (11), and o-ring (33),  
speed, or the speed rapidly fluctuates.  
using Repair Kit 24J886.  
Upon startup, the motor runs away for a few seconds Ensure that the compression nut (24) and flange  
before the speed controller slows it down.  
connector (23) are securely tightened to the motor  
6
3A1315A  
 
 
(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.  
Repair  
NOTE: To repair the agitator, see your separate  
agitator manual.  
10. Screw the upper housing (2) fully onto the lower  
housing (1).  
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.  
11. Turn the adjustment knob (16) all the way  
counterclockwise (outward). Screw the  
adjustment nut (15) fully onto the upper housing  
(2).  
NOTE: Use multi-purpose lithium based grease  
where ever lubrication is required. Order Part No.  
111920.  
12. Connect the air tubing (27) between the speed  
controller tube connector (29) and the air motor  
tube connector (21).  
1. Disconnect the main air line to the speed  
controller.  
13. Return the unit to service. Connect the main air  
line to the quick-disconnect fitting (28) on 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.  
ti17005a  
9. Ensure that the cam arms (8) align with the  
groove on the bottom side of the large washer  
3A1315A  
7
 
 
Kit Parts  
Ref.  
No.  
Description  
Qty  
1
The kit contains all necessary parts and tools to  
install the agitator speed controller.  
27  
28  
29  
33*  
TUBE, nylon; 1/4 in. (6 mm) OD; 2  
ft (0.6 m)  
Ref.  
No.  
Description  
Qty  
FITTING, quick-disconnect, air; 1/8  
npt(m)  
1
1
HOUSING, lower, speed controller  
HOUSING, upper, speed controller  
BALL BEARING  
1
1
1
1
2
1
CONNECTOR; 1/8 npt(m) x 1/4 in.  
(6 mm) OD tube  
1
2
O-RING; buna-N; 0.375 in. (9.5  
mm) OD  
1
3*  
4
SHAFT, drive  
* These parts are included in Repair Kit 24J886.  
5
BAR, mounting  
6
SCREW, machine, pan-head; 8–32  
x 3/4 in. (19 mm)  
7
NUT, hex; 8–32  
1
2
2
2
1
1
1
1
1
1
1
8
ARM, cam  
9
BEARING, sleeve; bronze  
PIN  
10  
11*  
12  
13*  
14  
15  
16  
18*  
PACKING, u-cup; UHMWPE  
WASHER, speed controller  
NEEDLE, speed controller  
SEAT, needle  
NUT, adjustment  
KNOB, adjusting  
O-RING; chemically resistant  
fluoroelastomer; 0.816 in. (20.7  
mm) OD  
TI17004a-1  
19*  
O-RING; chemically resistant  
fluoroelastomer; 1.5 in. (38 mm) OD  
1
20*  
21  
BALL BEARING  
1
1
CONNECTOR; 1/4 npt(m) x 1/4 in.  
(6 mm) OD tube  
22  
23  
O-RING; chemically resistant  
fluoroelastomer; 0.441 in. (11.2  
mm) OD  
1
1
CONNECTOR, flange; 3/16 hex  
socket  
24  
25  
26  
NUT, compression  
1
1
1
WRENCH, allen; 3/16 hex  
WRENCH, multi-function  
TI17253a-1  
8
3A1315A  
 
 
ti17005a  
3A1315A  
9
 
Technical Data  
Maximum air supply pressure  
Minimum air supply pressure  
Maximum speed  
100 psi (0.7 MPa, 7 bar)  
70 psi (0.5 MPa, 4.9 bar)  
1000 rpm  
Maximum speed controller air temperature  
Main air inlet size  
130°F (55°C)  
1/8 npt quick-disconnect fitting  
100–1000 rpm  
Speed control range  
Diameter  
4 in. (102 mm)  
Height (installed)  
4.5 in. (114 mm)  
1.4 lb (0.64 kg)  
Weight  
10  
3A1315A  
 
 
Notes  
3A1315A  
11  
 
 
Graco Standard Warranty  
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its  
name to be free from defects in material and workmanship on the date of sale to the original purchaser for  
use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a  
period of twelve months from the date of sale, repair or replace any part of the equipment determined  
by Graco to be defective. This warranty applies only when the equipment is installed, operated and  
maintained in accordance with Graco’s written recommendations.  
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction,  
damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper  
maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall  
Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment  
with structures, accessories, equipment or materials not supplied by Graco, or the improper design,  
manufacture, installation, operation or maintenance of structures, accessories, equipment or materials  
not supplied by Graco.  
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an  
authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco  
will repair or replace free of charge any defective parts. The equipment will be returned to the original  
purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material  
or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of  
parts, labor, and transportation.  
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR  
IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY  
OF FITNESS FOR A PARTICULAR PURPOSE.  
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above.  
The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages  
for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall  
be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.  
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IN CONNECTION WITH  
ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY  
GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.),  
are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable  
assistance in making any claim for breach of these warranties.  
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from  
Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other  
goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or  
otherwise.  
FOR GRACO CANADA CUSTOMERS  
The Parties acknowledge that they have required that the present document, as well as all documents,  
notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or  
indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du  
présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés,  
donnés ou intentés, à la suite de ou en rapport, directement ou indirectement, avec les procédures  
concernées.  
Graco Information  
To place an order, contact your Graco Distributor or call to identify the nearest distributor.  
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505  
All written and visual data contained in this document reflects the latest product information available at the time of publication.  
Graco reserves the right to make changes at any time without notice.  
Original Instructions. This manual contains English, MM 3A1315  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441  
Copyright 2011, Graco Inc. is registered to ISO 9001  
 
 

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