Graco 307792C AGITATOR Owner's Manual
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INSTRUCTIONS-PARTS LIST ($
307-792
ORACO
Rev. C
Supersedes B
WARNINGS AND INSTRUCTIONS
READ AND RETAIN FOR REFERENCE
AGITATORS
700 psi (7 bar) MAXIMUM WORKING PRESSURE l l
Model 220-356, Series A
For 5 gallon pressure tank
Model 220-357, Series A
For 10 gallon pressure tank
Model 220-358, Series A
For 15 gallon pressure tank
Air driven, gear reduced, l/2 hp (373 W) air motor
20: 1 ratio gear reducer: shaft rpm is l/20 of air motor rpm
TABLE OF CONTENTS
INSTALLATION.. ..........................................
OPERATION.. ..................................................
SERVICE
Lubrication ......................................................
.2, 3
.3
Air Motor Service.. ...........................................
Gear Reducer Service .........................................
4
.4
Setting the Output Shaft Coupling.. ...................... .
5
Replacing the Agitator Shaft.. .............................
Replacing the Coupling .......................................
Replacing the Shaft Seals.. ................................
PARTS DRAWING.. ..........................................
AIR CONSUMPTION CHART.. .............................
PARTS LIST .....................................................
.5
5
.5
.6
.6
7
HOW TO ORDER REPLACEMENT PARTS.. ............. 7
WARRANTY ......................................... Back Page
Model 220-356 shown
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
0 COPYRIGHT 1986, GRACO INC.
NOTE: Reference numbers and letters in paren- theses refer to the callouts in Figures l-6 and the Parts Drawing.
WARNING
Pressure Relief Procedure
To reduce the risk of serious bodily injury, in- cluding splashing in the eyes or on the skin or in- jury from moving parts, which can result if the tank pressure is not fully relieved, always follow this procedure before opening the pressure tank cover or fill port.
1. Shut off the air supply to the tank.
2. Close the air inlet valve. See Fig 1.
3. Open the air relief valve by turning the thumb- screw counterclockwise.
4. Wait until there is no air escaping through the valve before removing the cover or opening the fill port.
5. Leave the air relief valve open until you have reinstalled the cover or fill port.
I. Follow the Pressure Relief Procedure above.
Then remove the pressure tank cover from the tank.
2. Unscrew the jam nut, and remove the jam nut, plug, and o-ring from the tank cover. See Fig 2.
3. Place the gasket (17) on top of the tank cover’s center hole. Insert the drive shaft (14) through the center hole.
NOTE: Position the air motor so it faces away from the air regulator mounting as shown in Fig 1.
CAP
O-RING
-16
AIR \
VALVE -
AIR-
INLET
VALVE
Fig 2
4. Install the jam nut (16) below the tank cover.
Tighten the jam nut firmly to assure a seal between the gasket (17) and tank cover.
5. Install the support (11) and clamp (10) onto the shaft housing (9).
Fig
2
6. Align the agitator paddle (12) on the drive shaft as instructed for your model, below.
Models 220-357 and 220-358
Align the top of the paddle hub (A) with the mark (C) on the drive shaft (14).
Model 220-356
If a 5 gallon pail is to be placed inside the pressure tank (5 gallon tank only), align the top of the paddle hub (A) with the upper mark (B) on the drive shaft (14).
If a pail will not be p/aced inside the tank, align top of hub (A) with the lower mark (C) on the drive shaft (14).
After the paddle (12) is properly aligned, apply low strength sealant to the two setscrews (13) and firmly secure the paddle with the setscrews.
7. Slide the baffle (23) over the pressure tank supply tube (E). Position the baffle about l/2 in. above the highest point on the agitator paddle (12). Secure the baffle with the two screws (24) and nuts (25). See
Fig 3.
8. Connect the air hose (21) to the pressure tank’s air inlet manifold (F). See Fig 4.
9. Remove the gear reducer’s oil level plug (G) from the street elbow and check the oil level in the reducer housing. See Fig 4. The oil should never be higher than the oil level plug. If necessary, drain or add oil until the proper oil level is attained. Screw the oil level plug back onto the street elbow.
NOTE:
Special high temperature synthetic gear oil is required for the gear reducer. Use only
Grace oil, part number 204-559.
To reduce the risk of serious bodily injury which can result if the tank pressure is not fully relieved, always follow the Pressure Relief Procedure on pane 2 before opening the tank cover or fill port.
1. Fill the pressure tank as explained in the Pressure
Tank Instruction Manual 307-232.
2. Screw on the fill port cap (J), or if the tank cover was removed, place the agitator and cover on the pressure tank and secure the cover with the c-clamp handles (K). See Fig 4.
WARNING
Overpressurizing the tank or accessories could cause a part to rupture. To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, and property damage, never exceed the maximum air and fluid working pressure of the lowest rated component in your system.
3. Close the tank air regulator(s) by turning the knob(s) counterclockwise. Turn on the air supply.
4. To start the agitator, slowly open the needle valve
(20). Adjust the speed of the agitator, with the nee- dle valve, to about 40 to 60 RPM. Operate the agitator continuously while using the pressure tank.
CAUTION
DO NOT operate the agitator at a high speed for a long period of time. Excessive agitator speed can cause foaming of fluid (making the fluid unusable), vibration, and increased wear on parts. Always agitate the fluid only enough to maintain even mixing.
5. To stop the agitator, close the needle valve (20).
24
Fig 3
JI I
Fig 4
307-792 3
Lubrication
Air Motor: To lubricate the air motor, place one drop of oil in the motor’s air inlet after about every 49 hours of operating time. The air motor may require more or less frequent lubrication, depending on the condition of the air supply.
Gear Reducer: After the first 100 hours or two weeks of operation, remove the drain plug, drain the oil, and thoroughly flush the housing with light flushing oil.
Remove the oil level plug, and refill with Grace oil (part number 204-559) to the proper level. Afterward, change the oil every six months or 2500 hours of operation
(whichever occurs first) under normal operating condi- tions. More frequent oil changes are needed under severe operating conditions or in atmospheres contain- ing excessive moisture or abrasives. Contact your Grace representative for recommendations.
Air Motor Service (See Fig 5)
If the air motor operation is erratic or sluggish, flush the motor as follows. Remove the muffler, and fill the cavity with kerosene. Wait 10 minutes, then operate the agitator slowly until all the kerosene is blown out.
If air motor operation is still sluggish, flush again.
DO NOT attempt to repair the air motor yourself. Con- tact an authorized Grace Service Center.
When replacing the air motor, place one-half of the coupling (3a) on the air motor shaft (L), flush with the end of the shaft. Tighten the coupling setscrew against the flat on the shaft.
Install the load cushion (MI on the gear reducer coupling half. Slide the clamp (2) onto the collar (4).
Align the two coupling halfs, and push the air motor hub into the collar (4) until it bottoms out, then back it out
0.015 in. Make sure the air motor inlet and outlet face up.
Apply Loctite@ No. 222 to the two clamp setscrews
(32). Align the setscrews to one side of the slots on the collar (41, and tighten them.
Apply PTFE tape to the inlet (20) and outlet (22) fit- tings, and install them in the air motor.
4 307-792
Gear Reducer Service (See
Fig 6)
DO NOT attempt to repair the gear reducer (5) yourself.
Contact an authorized Grace Service Center.
When replacing the gear reducer, turn it upside down and remove the cap screws.(33) from the bottom of the old gear reducer. Remove the top coupling half (19a) from the old gear reducer, and install the coupling half on the new gear reducer. Wipe the screw holes clean with a rag.
Apply Loctite No. 271, or equivalent, to the four cap- screws (33). Install them through the bracket (6) and into the gear reducer. Torque the screws to 220 in-lb (25 N.m).
Leave the gear reducer upside down for 30 minutes to allow the Loctite to cure. Make sure the three hole pattern on the bottom of the bracket (6) is orientated as shown in
Fig 6. Set the coupling as instructed under Setting the
Output Shaft Coupling.
CAUTION
DO NOT use the four screws supplied with the new gear reducer to secure it; those screws will not properly secure the gear reducer. Use the cap screws (33) which were removed from the old gear reducer. Be careful not to spill any oil from the gear reducer.
Setting the Output Shaft Coupling (See
Fig 6)
With the agitator shaft (14) pushed up against the washer
(15a), secure the lower portion of the coupling half (19b) to the shaft by tightening the coupling setscrew against the flat on the shaft. Leave about a 0.015 in. gap between the coupling half and washer (15b).
Secure the upper coupling half (19a) to the gear reducer shaft by tightening the coupling setscrew into the keyway.
Leave about a 0.015 in. gap between each of the coupling halfs (19a, 19b) and the load cushion (N).
Replacing the Agitator Shaft (See
Fig 6)
Remove the setscrew from the lower coupling (19b). Pull out the agitator shaft (14) and install the new shaft.
Set the coupling as instructed above.
Replacing the Coupling (See
Fig 6)
Remove the three cap screws (18) from the mounting bracket (6). Pull the two coupling halfs (19a, 19b) out through the bottom of the mounting bracket (6).
Install the new coupling halfs in the mounting bracket.
Screw the three cap screws (18) back into the mounting bracket.
Replacing the Shaft Seals (See
Fig 6)
Remove the setscrew from the lower coupling half (19b).
Pull out the agitator shaft (14).
Remove the three cap screws (18) from the mounting bracket (6). Remove the shaft housing (9). Remove the seals (9a, 9b) from the shaft housing, and install the new seals.
Reinstall the shaft housing and shaft.
Fig 6
G
307-792 5
PARTS DRAWING i : ,.,g,; I,
,:-..? .&Ab’
.20
AIR CONSUMPTION CHART
37-i
F-24
6 307-792
-0 500 1000 1500 ZDDO 2500 3000
(OUTPUT)
PARTS LIST ”
Model 220-356, Series A
Includes items l-36
Model 220-357, Series A
Includes items l-37
Model 220-358, Series A
Includes items l-37
REF PART
NO. NY.
DESCRIPTION
I, j ,;
,,
Q-I-Y
20a
20b
2oc
20d
20e
20f
21
;:
32
;:
35
36
37 z i
7
: lla
12
13
14
15
I
17
18
: i
Fit
17
100-718
108462
171-970
220-463
108-544
181-746
181-747
181-748
104-373
157-674
171-968
102-598
108-463
206-264
166-529
166-532
164-698
157-628
165-722
166531
166023
156-969
171989
103-782
102-025 loo-655
MOTOR, air
CLAMP
COUPLING, flexible
COLLAR, mounting
Includes items 4a 8 4b
.SLEEVE, mounting, air motor
.PLATE, mounting
REDUCER, gear
BRACKET, mounting
LOCKWASHER, int. shkprf, no. 10
SPACER
HOUSING, shaft
Includes replaceable items 9a & Sb
.SEAL, shaft
.SEAL, shaft
CLAMP, hose
SUPPORT, shaft
Includes replaceable item 1 la
.BEARING,
104-121 NUT
171-970 BUSHING;
PTFE
PADDLE, agitator
SCREW, set, slot hd, 1/4-20x 0.5
SHAFT, 15”. 5 gal size
SHAFT, 20.75”, IO gal size
SHAFT, 31”, 15 gal size
WASHER thrust; l/2” ID x 1” OD
NUT, jam, hex; I-l/2”-12
GASKET, cork w/buns-N
SCREW, cap, socket head;
10-32x 0.5
COUPLING, flexible
NEEDLE VALVE ASSY.
Includes items 20a to 20f
.NEEDLE, valve
.NUT, packing
.KNOB, packing
.O-RING; buna-N
BODY, valve
.WASHER, nylon
HOSE, couoted: 400 osi (28 bar) maximum working pressure
MUFFLER
BAFFLE, agitator
SCREW, cap, socket head; l/4-20 x 1”
NUT, hex, regular; l/4-20
SCREW, cap; 5116-18 x3/4
101-118 SCREW, set, sch; 10-24x0.25
105-509 SCREW, cap, sch; 5/16-18x 0.875
107-278 U-CLAMP
104-123 WASHER, lock
Included with Models
220-357 and 220-358 ONLY
PTFE is a registered trademark of the Company,
Loctite@ is a registered trademark of the Loctite Corporation.
1
:
:
;
1
1
1
3
1
1
1
1
1
1
1
:
:
:
1
2
2
1
1
2”
4
1
2
2
:
1
1
1
NOTE: All agitator “wetted parts” are stainless steel except for the agitator paddle (item 12), which is nylon.
HOW TO ORDER REPLACEMENT PARTS
1. To be sure you receive the correct replacement parts, kit or accessories, always give all of the information requested in the chart below.
2. Check the parts list to identify the correct part number; do not use the ref. no. when ordering.
3. Order all parts from your nearest Grace distributor.
6 digit
PART
NUMBER QTY PART DESCRIPTION
307-792
7
Listed below by the assembly changed are ADDED parts.
ASSEMBLY
CHANGED
PART
STATUS
220-356, ADDED
ADDED
REF
NO. PART NO. NAME i:
36
1 lo-278
104-121
U-clamp
Nut
I
220-357 & ADDED 37 171-970 Bushing
I
THE GRACO WARRANTY AND DISCLAIMERS
WARRANTY
Grace warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Grace distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this warrantv, Grace will, for a equipment is installed, operated and maintained in accordance with Grace’s written recommendations.
This warranty does not cover, and Grace shall not be liable for, any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Grace component parts. Nor shall Grace be liable for malfunction, damage or wear caused by the incompatibility with Grace equipment of structures, accessories, equip- ment or materials not supplied by Grace, or the improper design, manufacture, installation, operation or maintenance of structures, ac- cessories, equipment or materials not supplied by Grace.
This warrantv is conditioned uoon the oreoaid return of the eouioment claimed to be defective for examination bv Grace to verifv the claimed defect. If the’ claimed defect is verified; Grace will rapair 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 the costs of parts, labor and transportation.
DISCLAIMERS AND LIMITATIONS
THE TERMS OF THIS WARRANTY CONSTITUTE PURCHASER’S SOLE AND EXCLUSIVE REMEDY AND ARE IN LIEU OF ANY OTHER
WARRANTIES (EXPRESS OR IMPLIED), INCLUDING WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PAR-
TICULAR PURPOSE, AND OF ANY NON-CONTRACTUAL LIABILITIES, INCLUDING PRODUCT LIABILITIES, BASED ON NEGLIGENCE OR
STRICT LIABILITY. EVERY FORM OF LIABILITY FOR DIRECT. SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS .IS EXPRESSLY EX-
CLUDED AND DENIED. IN NG CASE SHALL GRACO’S LIABILITY EXCEED THE AMOUNT OF THE PURCHASE PRICE. ANY ACTION FOR
BREACH OF WARRANTY MUST BE BROUGHT WITHIN TWO (21 YEARS OF THE DATE OF SALE.
EQUIPMENT NOT COVERED BY GRACO WARRANTY
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PAR-
TURED BY GRACO. These items sold, but not manufactured bv Grace (such as electric motor, switches, hose, etc.), are subject to the warran- ty, if any, of their manufacturer. Grace will provide purchaser with reasonable assistance in making any claim for breach of these warranties.
Factory Branches:
Atlanta, Chicago, Dallas, Detroit, Los Angeles, West Caldwell (N.J.)
Subsidiary and Affiliate Companies:
Canada; England; Switzerland; France; Germany; Hong Kong; Japan
GRACO
INC.
P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
PRINTED IN U.S.A. 807-792 12-86 Revised 9-89

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