Comply with all applicable local, state, and national fire, electrical, and safety regulations.
100 psi (7 bar) maximum working pressure.
section of all equipment manuals. Read the fluid and solvent manufacturer
, gloves, clothing, and respirator as recommended by the fluid and
.
’s
Page 3
WARNING
FIRE AND EXPLOSION HAZARD
Improper
result in a fire or explosion and serious injury
D
D
D
D
D
D
D
grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and
.
Ground all equipment. Refer to
If there is any static sparking or you feel an electric shock while using this equipment,
agitator immediately. Do not use the equipment until you identify and correct the problem.
Do not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents, or
fluids containing such solvents in aluminum pumps. Such use could result in a serious chemical
reaction, with the possibility of explosion.
Do not use kerosene or other flammable solvents or combustible gases to flush the unit.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being dispensed.
Keep the dispensing area free of debris, including solvent, rags, and gasoline.
Do not smoke in the dispensing area.
Grounding
on page 6.
shut off the
MOVING PARTS HAZARD
Moving
body parts and can cause splashing in the eyes or on the skin.
parts, such as the rotating blades of the agitator
, can pinch or amputate your fingers or other
D
Keep clear of all moving parts when starting or operating the agitator
D
Always shut of
drum or check or repair any part of the agitator
f the agitator and disconnect the air line before you remove the agitator from the
.
HAZARDOUS VAPORS
Hazardous
skin, swallowed, or inhaled. When flushing the air motor
fluids or toxic fumes can cause serious injury or death if splashed in the eyes or on the
, keep your face away from the exhaust port.
.
Page 4
Parts
Drawings
Heavy-Duty Stainless Steel Agitator,
Model 238–157
1
5
24
18
17
18
27
2*
9*
8
4
3
7*
22
23 (See DET
AIL A)
Siphon Kit, Model 238–250
52
50
51
54
10
16
2*
26
15*
12*
14*
13
11
4
21
19
28
32
20
05736
6
53
31
05735
DETAIL
A
23a
23b
23c
23d
23e
4308-609
REF 23
03432
Page 5
Parts
PTFE
Lists
Heavy-Duty Stainless Steel Agitator, Model 238–157
Air Motor Repair Kit, Part No. 207–335, is available.
Included in Bearing Replacement Kit 238–251
Extra warning labels are available for free.
VE, needle
Includes items 23a to 23e
.HOUSING, needle valve
ACKING, o-ring
VE, needle
, set
.BARREL, needle valve
FITTING, air line, male
, hex head
(not shown)
; 50 mm
LUG, grounding
BLADE, agitator
LABEL, warning
, lock
, cap
1
1
2
1
1
1
1
3
1
1
4
1
8
8
Ref
No.
50238–161
51190–998RET
52190–999NUT
53191–000
54109–176O-ring; r
Part No.
DescriptionQty.
TUBE, siphon
AINER, siphon tube
, retaining
BEARING; plain
Drum Cover Assembly, Model 238–283
See
manual 308–466.
1
1
1
1
1
5308-609
Page 6
Installation
NOTE:
refer to the callouts in the figures and in the
Drawings.
Reference numbers and letters in parentheses
Parts
Grounding
Proper grounding is an essential part of maintaining a
safe system.
T
o reduce the risk of static sparking, the mounting
cover and all electrically conductive objects or devices
in the dispensing area
Check your local electrical code for detailed grounding
instructions for your area and type of equipment.
To ground the agitator,
ground wire (A) to the ground connector (B) on the
agitator
ground wire to a true earth ground.
For an additional ground wire and clamp, order
Part No. 237–569.
. See Fig.1. Connect the other end of the
must
be properly grounded.
connect one end of the
B
A
Assembling
Agitator Without an
14 in. (36 cm)
Fig. 2
With
or W
ithout an Elevator
1.
Slide the agitator shaft through the large hole in the
center of the drum cover (29).
2.
Rotate the agitator so that the air motor is to the left
of the shaft, as shown in Fig. 2, which will align the
three tapped holes in the bottom of the agitator with
the three through holes in the drum cover
and Positioning
.
Elevator
05734
Fig. 1
Assembling and Positioning the Agitator
With
an Elevator
Mount the drum cover as described in manual
306–287. The elevator must be in the down position
when you do any work on the elevator
cover assembly
is raised. Proceed to step 1 in With or W
Elevator.
Without an Elevator
If your system does not have an elevator
install the Handles Kit to facilitate handling the drum
cover and agitator
and move the drum cover and agitator
.
Do not
go under the elevator when it
. T
wo people are needed to safely lift
Handles Kit, order Part No. 237–524
Place two standard 55 U.S. gallon (45 Imperial gallon)
barrels 14 in. (approximately 36 cm) apart, and center
the drum cover on the barrels with the Graco logo
centered and facing you, as shown in Fig. 2. Proceed
to step 1 in
W
ith or W
ithout an Elevator.
, agitator
ithout an
, you should
.
To order the
.
, or drum
3.
Thread the three hex head screws (25) up through
the drum cover and into the agitator
them to 75 in-lb (8.4 N-m).
4.
Assemble one pair of agitator blades (28) so that
the four through holes in the blade halves are lined
up (see
5.
Push four cap screws (31) through the four holes in
the blades, and start the lock nuts (32) onto the cap
screws.
6.
Slide the loose blade assembly up the shaft, and
position it approximately 13 in. (33 cm) from the
bottom of the shaft.
7. T
blades together until they are tight on the shaft.
T
orque the locknuts to 50 to 55 in-lb (5.6 to 6.2
N-m). A gap will remain between the blade halves.
8.
Repeat steps 4 and 5 with the second pair of
agitator blades.
9.
Position the second blade assembly near the
bottom end of the shaft, but not on the bottom
plug (20).
10.
Rotate the lower blade assembly so that it is
oriented 90 degrees relative to the upper blade
assembly
in-lb (5.6 to 6.2 N-m). A gap will remain between
the blade halves.
Parts Drawing
ighten the four lock nuts (32) evenly to draw the
, and torque the lock nuts (32) to 50 to 55
for blade orientation).
, and torque
Page 7
Installing the Siphon Kit
PTFE
Installation
See
the Siphon Kit, Model
page 5.
1.
Remove the top plug (5) and the bottom plug (20).
2.
Replace the bottom plug (20) with the plain bearing
(53), and tighten the bearing with a wrench.
3. Work the r
retainer (51), and press it into the o-ring groove.
4.
Replace the top plug (5) with the siphon tube
retainer (51). Leave the retaining nut (52) on the
siphon tube retainer
tightened. T
top of the agitator housing with a wrench.
5.
Slide the siphon tube (50) down through the
retaining nut (52), siphon tube retainer (51), and
agitator shaft (6) until the siphon tube touches the
bottom of the drum. Raise the siphon tube
approximately 1/4 in. (approximately 6 mm) so that
it does not touch the bottom of the drum. Hold the
siphon tube at this height with one hand, and
tighten the retaining nut with the other hand
(hand-tight is enough to hold the siphon tube in
place).
ighten the siphon tube retainer into the
238–250,
o-ring (54) onto the siphon tube
, but make sure it is not
Parts List
on
5
52
50
51
54
6
CAUTION
Barrel Heights V
Loosen the retaining nut on the siphon tube retainer
before you raise the drum cover
loosen the retaining nut, the siphon tube may make
contact with the bottom of the barrel when you
lower the drum cover onto a new barrel, which
could damage the siphon tube or the barrel.
ary.
. If you do not
Make sure the center tabs on the
retaining nut ferrule point down.
Fig. 3
53
20
05736
7308-609
Page 8
WARNING
Operation
MOVING P
T
o reduce the risk of serious injury
splashing in the eyes or on the skin, always shut of
agitator) before you raise, check, or repair the agitator
ARTS HAZARD
, including cuts, amputation of fingers by the agitator blades, and
Startup
1.
Make sure the needle valve (23) is closed.
2. T
urn on the air supply
coupler.
3.
Using the needle valve (23) to adjust the agitator
speed, gradually increase the speed until you can
see through the inspection port movement in the
surface of the liquid, but do not increase the
agitator speed enough to create a vortex in the
surface of the liquid. If the surface begins to
vortex, decrease the agitator speed to prevent air
entrainment.
NOTE:
which is approximately 50 rpm of the agitator blades.
Excessive agitator speed may cause vibration, foaming
of fluid, and increased wear on parts. Always agitate
fluid thoroughly before supplying it to the dispensing
equipment. Continue agitating fluid while the
dispensing equipment is being supplied.
Always maintain moderate agitator speed,
, and connect the air line
f the agitator (disconnect the air line from the
.
Shutdown
T
o stop the agitator
needle valve (23), or disconnect the air line coupler
, close of
f the air supply with the
CAUTION
Keep the agitator upright. Do not lay it on its
side or upside down, or liquid may flow down the
shaft and into the gear reducer area.
.
Page 9
Service
Flushing the Air Motor
WARNING
FIRE
AND EXPLOSION HAZARD
Do not use kerosene or other flammable
solvents to flush the air motor. Flushing
with flammable solvents could cause fire
or explosion and result in serious injury
or property damage.
WARNING
HAZARDOUS V
Hazardous fluids or toxic fumes can
cause serious injury or death if splashed
in the eyes or on the skin, swallowed, or
inhaled. When flushing the air motor
face away from the exhaust port, and wear the
appropriate protective clothing, gloves, eyewear
and respirator
If the air motor (1) is sluggish or inef
procedure in a well ventilated area.
1.
Disconnect the air line and muf
Parts Drawing
2.
Add several teaspoons of non-flammable solvent,
or spray the solvent directly into the male
quick-disconnect coupler (24).
NOTE:
and lubricated pumps is Gastr Flushing Solvent
(Part No. AH255 or AH255A) or Penetone
Inhibisolr
.
on page 4.
The recommended solvent for air motors
Safety Solvent.
APORS
, keep your
ficient, follow this
fler (22). See the
Additional Air Motor Service
If
the air motor vanes need to be replaced, or if foreign
material is present in the motor chamber
experienced mechanic may remove the end plate
opposite the drive shaft end of the air motor
pry with a screwdriver
plate and body and cause leaks. Use a puller tool,
which will remove the end plate while maintaining the
position of the shaft.
New vanes should have the edges with cut corners
pointing toward the bottom of the vane slot.
T
o order an Air Motor Repair Kit, order Part No.
207–335.
; it will dent the surface of the
, an
.
Do not
Cleaning the Agitator Shaft and Seal
CAUTION
,
Keep
the agitator upright. Do not lay it on its
side or upside down, or liquid may flow down the
shaft and into the gear reducer area.
If any material is on the shaft (6) within 1/2 in. (13 mm)
of the housing (13), it must be removed to prevent
damage to the bearing seal (14*). If the flexible lips on
the bearing seal are torn or worn such that they do not
make contact all the way around the shaft, the seal
must be replaced. A worn seal may allow foreign
material into the bearing and cause premature failure.
See
Servicing the Gear Reducer
instructions on getting access to the seal and for the
Bearing Replacement Kit Part No.
on page 10 for
Cleaning an Agitator with a Siphon Kit
3.
Reconnect the air line, and slowly increase the air
pressure until there is no trace of solvent in the
exhaust air
4.
Reconnect the muf
5.
Re-lubricate the motor with a squirt of lightweight oil
into the male quick-disconnect coupler (24).
.
fler (22).
Lubricating the Air Motor
If
an air line lubricator is not installed, the agitator air
motor must be manually lubricated after every 8 hours
of use. Lubricate the air motor by placing 2 or 3 drops
of SAE #10 light oil in the motor’s air inlet.
The
procedure for flushing and cleaning the siphon tube
(50) and agitator shaft (6) is as follows:
1.
Raise the agitator out of the drum.
2.
Remove the plain bearing (53) from the agitator
shaft (6), and clean it.
3.
Detach any attachments from the siphon tube, and
flush the siphon tube.
4.
Loosen the retaining nut (52), and slowly lift the
siphon tube (50) out of the agitator
5.
Clean the inside and outside of the siphon tube
(50), flush the inside of the agitator shaft (6), and
clean the agitator blades (28) and the outside of the
shaft.
6.
Reassemble the siphon tube by doing the reverse
of steps 2 through 4.
.
Page 10
Service
Servicing the Gear Reducer
You
may want to have the Bearing Replacement Kit on
hand before you begin this procedure.
Bearing Replacement Kit, order Part No. 238–251.
Disassembling
The following procedure does not require that you
remove the agitator from the drum of material:
1.
If your agitator has a siphon kit, do steps 2 through
4 in
Cleaning an Agitator with a Siphon Kit
page 9. If your agitator does not have a siphon
kit, proceed to step 2 below
2.
Raise/support the drum cover above the drum high
enough so that you can reach the underside of it.
3.
Remove the three hex head screws (25) that hold
the agitator to the drum cover
4.
Raise the agitator housing 4 to 6 in. (100 to
150 mm) above the drum cover
that height with blocks.
5. T
ightly grip the agitator shaft with a clamp to
prevent the shaft from falling into the drum.
6.
Remove the two short bolts (11) and the two long
bolts (19) that hold the upper housing (8) and the
lower housing (13) together
straight up, lift the upper housing off of the lower
housing.
7. T
urn the large gear (10) counter-clockwise to
remove it from the agitator shaft, and lift the
pinion/gear assembly (3, 16) out of the lower
housing.
NOTE:
agitator shaft is well secured. See step 5.
8. T
remove it from the agitator shaft.
9.
Carefully lift the lower housing (13) of
agitator shaft.
Cleaning and Servicing
1.
Clean any foreign material of
upper and lower housings (8 and 13).
Before you do step 8, check to be sure the
urn the 50 mm nut (26) counter-clockwise to
.
. Carefully lifting
To order a
on
.
, and support it at
f of the
f of the outside of the
Reassembling
NOTE:
bearing and seal placement and orientation.
1.
See the
Reposition the lower housing (13) on the agitator
shaft.
Parts Drawing
on page 4 for proper
CAUTION
o prevent damage to the bearings and seals,
T
avoid scraping them against the threaded agitator
shaft while you are lowering the lower housing in
place.
2.
Thread the 50-mm nut (26) onto the agitator shaft
by turning it clockwise, and tighten it hand tight.
3.
Reposition the pinion/gear assembly (3, 16) in the
lower housing, thread the large gear (10) onto the
agitator shaft, and tighten the large gear hand tight.
4.
Make sure the small thrust balls (4) are in place.
5.
Carefully lowering it straight down, reposition the
upper housing (8) on the lower housing (13).
6.
Replace the two short bolts (1
bolts (19) that hold the upper housing (8) and the
lower housing (13) together
75 in-lb (8.5 N-m).
7.
Remove the blocks that you have supporting the
agitator housing, and reposition the agitator on the
drum cover
8.
Thread the three hex head screws (25) up through
the drum cover and into the agitator
them to 75 in-lb (8.4 N-m).
9.
If your agitator has a siphon kit, re-install it by doing
the reverse of steps 2 through 4 in
Agitator with a Siphon Kit
.
Additional Agitator Service
If
the unit requires more than installation of a bearing
replacement kit or gear replacement, it may be
advisable to send the unit to a Graco distributor for
repair or replacement.
1) and the two long
, and torque the bolts to
, and torque
Cleaning an
on page 9.
NOTE:
One is in the upper housing (8), and one is in the
lower housing (13).
2.
Inspect the parts for any wear. If any of the parts
are worn or damaged, replace them. The Bearing
Replacement Kit contains replacement bearings
and seals (items 2, 7, 9, 12, 14, and 15).
Do not lose the two small thrust balls (4).
10308-609
Page 11
Technical
PTFE
PTFE
Data
Maximum
Motor
using 12 cfm (0.34 m3/min)
Maximum
Gear
Weight33.5
Height
Heavy-Duty Stainless Steel Agitator,
Model 238–157
100.
24:1.
lb (15.2 kg)
3 in. (76 mm).
No. 208–536
,
r
Maximum
Maximum
Air
consumption
*
Sound data
*
Sound
{
50 rpm (shaft) agitating 300 cps water
}
100 rpm (shaft) agitating an empty container
Gast
Inhibisol
Delrin
flow at 100 cps
flow at 1000 cps
{ Typical
Sound power
Sound
} Maximum
Sound power
Sound
data was measured per ISO 3744-1981.
r
is a registered trademark of Gast Manufacturing.
r
is a registered trademark of Penetone Corp.
r
and
Drawings
.
. . . . . . . .
.
. . . . . . .
3 to 30 scfm (0.08 to 0.85 m3/min).
. . .
operating conditions
.
. . . . . . . . . . . . . . . . . . .
pressure
noise conditions
pressure
.
. . . . . . . . . . . . . . . . .
.
. . . . . . . . . . . . . . . . . . .
.
. . . . . . . . . . . . . . . . .
12 gpm (45.5 lpm)
1.2 gpm (4.5 lpm)
77.3 dB(A)
63.8 dB(A)
86.4 dB(A)
72.9 dB(A)
-base material
Siphon Kit, Model 238–250
3 in.
(76 mm)
10 in. (254 mm)
32 in.
(813 mm)
(508 mm)
20
in.
38
in.
(965 mm)
43 in.
(1092 mm)
05773
05737
11308-609
Page 12
The
WARRANTY
Graco
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 Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of
this warranty
defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’
written recommendations.
This warranty does not cover
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 with Graco
equipment of 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 claim. 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.
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),
liabilities, including product liabilities, based on negligence or strict liability
consequential damages or loss is expressly excluded and denied. In no case shall Graco’
purchase price. Any action for breach of warranty must be brought within two (2) years of the date of sale.
, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven
including warranty of merchantability or warranty of fitness for a particular purpose
Graco W
, and Graco shall not be liable for
arranty and Disclaimers
s
, any malfunction, damage or wear caused by faulty installation,
, and of any non-contractual
. Every form of liability for direct, special or
s liability exceed the amount of the
EQUIPMENT NOT COVERED BY GRACO WARRANTY
Graco makes no warranty
respect to accessories, equipment, materials, or components sold but not manufactured by Graco. These items sold, but not
manufactured by Graco (such as electric motor
Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.
TO
PLACE AN ORDER
1–800–367–4023 T
, and disclaims all implied
, switches, hose, etc.) are subject to the warranty
Graco
, contact your Graco distributor
oll Free
warranties of merchantability and fitness for a particular purpose
, if any
, of their manufacturer
Phone Number
, or call this number to identify the distributor closest to you:
, with
.
Sales
Foreign Offices:
Belgium, Canada, England, Korea, Switzerland, France, Germany
Offices:
GRACO INC.P.O. BOX 1441
12308-609
Atlanta, Chicago, Detroit, Los Angeles
MINNEAPOLIS, MN
PRINTED
IN U.S.A. December 1995
, Hong Kong, Japan
55440–1441
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