Graco G3 Series User manual

Instructions
G3 Stirring Paddle
Replacement Kit
Instructions for replacing stirring paddle. For professional use only.
Part No.: 571044, 571045, 571046, 571047
Kit Parts
Important Safety Instructions
Read all warnings and instructions in this
manual and the G3 Pump instruction manual
that was included with your unit. Save these
instructions.
Ref. Description Qty
1 WIPER, stirring 1
2 BEARING, sleeve 1
3 O-RING, 258, green 1
4 PADDLE, stirring 1
1
4
3
2
2 Liter Model shown
3A0535C
ENG

Instructions
23A0535C
Pressure Relief
Relieve pressure in system by using two wrenches
working in opposite directions on pump element and
pump element fitting to only loosen fitting.
NOTE: When loosening pump element fitting, do NOT
loosen pump element. Loosening pump element will
change the output volume.
Instructions
Reference numbers used in these instructions corre-
spond to parts included in Kit and are provided on page
1. Parts identified with an alpha character are user pro-
vided, already installed components or locations neces-
sary to correctly complete these instructions.
Disassembly
NOTE: Unless otherwise noted, all illustrations show 2L
pump models.
1. Disconnect power source.
2. Relieve pressure using Pressure Relief Procedure
provided.
3. For 2 Liter models only: use a strap wrench
around reservoir (a) to turn reservoir 1/4 turn coun-
ter-clockwise (FIG. 2).
For 4L or larger reservoirs: be sure strap wrench
is positioned around the lower portion of the reser-
voir. Turn reservoir counter-clockwise approximately
to full turns until it is loose enough to remove it from
reservoir adapter.
SKIN INJECTION HAZARD
High-pressure fluid from dispense device, hose leaks, or
ruptured components will pierce skin. This may look like
just a cut, but it is a serious injury that can result in ampu-
tation. Get immediate surgical treatment.
Follow Pressure Relief Procedure in this manual, when
you stop dispensing and before cleaning, checking, or
servicing equipment.
FIG. 1
FIG. 2
a

Instructions
3A0535C 3
4. Remove reservoir (a) and o-ring (b) from (FIG. 3).
Discard o-ring (b).
5. Step 5 (a - d) is for G3 Pumps with a follower
plate ONLY:
a. Verify the following parts were removed with
reservoir (FIG. 4):
• Spring (S)
• Follower Pate (FP)
• Follower Plate Seal (FPS)
•Rod(R)
b. Remove any parts still installed in the G3 base.
c. Be sure parts remaining in reservoir were
removed to reuse them for reassembly.
d. Examine follower plate seal (FPS) for wear or
damage. If it is damaged, it must be replaced.
Part No. 278139 is available from Graco. Con-
tact customer service to order this part or your
local Graco distributor.
NOTE: For models that include a Low Level paddle
and/or follower plate, be careful when removing stirring
paddle from G3 that bearing (2) does not fall into the
unit.
6. For all installations, turn paddle (d) clockwise to
loosen and remove it from G3 base (FIG. 5).
FIG. 3
b
2 Liter Models
4 Liter and Larger Models
b
FIG. 4
FIG. 5
R
S
FP FPS
d

Instructions
43A0535C
7. Step 7 (a - b) is for G3 Pumps with Low Level
Paddle ONLY:
a. Remove bolt (f) and washers (g) holding low
level paddle (e) to stirring paddle (d) and com-
pletely separate these parts from stirring pad-
dle. Keep bolt and washers for reassembly (FIG.
6.
b. Examine the low level paddle (e), if undamaged
it can be reused. If damaged, a replacement low
level paddle, part no. 278136 is available from
Graco customer service.
8. For all installations, discard old stirring paddle (d)
(this part is not reused).
Reassembly
Always use new parts from kit when available.
1. Lightly grease stirring paddle arm (4a) with same
grease you are using in the pump (FIG. 7).
2. Slide wiper (1) over arm (4a) on stirring paddle (4)
(FIG. 7).
3. Step 3 (a - g) is for G3 Pumps with Low Level
Paddle ONLY. If your G3 Pump model does not
include a Low Level paddle, continue installa-
tion with Step 4, page 5.
To assemble low level paddle to stirring paddle (4):
a. Align washers (g), with hole in the base (h) of
the stirring paddle (4). One washer should be
on the top of the hole and one on the bottom
(underside) as shown in FIG. 8.
FIG. 6
e
f
e
d
g
FIG. 7
FIG. 8
1
4a
4
g
g
h
4

Instructions
3A0535C 5
b. Examine low level paddle (e). It is designed with
a slot / gap on one side.
c. To correctly assemble the low level paddle (e) to
the stirring paddle (4), slide the stirring paddle
and washers into the slot / gap (FIG. 10).
d. Align hole (j) in top of low level paddle (e) with
hole in center of washers (g) and stirring paddle
(4) (FIG. 11).
e. Insert bolt (f), making sure it passes through the
low level paddle (e), holes in washers (g) and
base of stirring paddle (4) (FIG. 11).
f. Using a screwdriver, tighten bolt (d). Torque bolt
to 4 in. lbs (0.45 N•m). Bolt should be tight
enough to the hold low level paddle securely in
place while still allowing the paddle to move
freely back and forth. It also must not protrude
from the bottom of low level paddle (e).
NOTE: Over tightening bolt (d) will cause low
level paddle to not function.
g. Install bearing (2) in paddle (4) as shown in FIG.
12.
4. Install stirring paddle (4) in base of G3. Turn paddle
counter-clockwise until it is tighten securely in
place (FIG. 13). (Illustration does NOT show low
level paddle.)
NOTE: If a low level paddle (e) is installed, to pre-
FIG. 9
FIG. 10
slot / gap
e
j
e
g
4
slot/gap
FIG. 11
FIG. 12
f
e
g
4
j
2
4

Instructions
63A0535C
vent damage, hold low level paddle in its full out
position while installing stirring paddle (FIG. 14).
5. Step 5 (a - g) is for G3 Pumps with a follower
plate ONLY. If your G3 Pump does not include a
follower plate, continue Reservoir Installation
instructions, page 7.
a. Verify low level paddle (e) is in full out position
as shown in FIG. 14.
b. Install follower plate (FP) on stirring paddle (4).
Be sure the seal (FPS) is facing down (toward
ricer plate) as shown in FIG. 15.
c. Install spring (S) into spring pocket (k).
d. Install Rod (R) into reservoir (a).
e. Slide rod (R) through center of spring (S) and
follower plate (FP).
f. Seat spring (S) in spring pocket in top of reser-
voir (a).
g. Compress spring (S) to install reservoir (a). See
Reservoir Installation instructions.
FIG. 13
FIG. 14
4
e
FIG. 15
4
FP
S
R
FPS
k

Instructions
3A0535C 7
Reservoir Installation - 2 Liter Models Only
1. Grease new o-ring (3) (included in kit) and install
o-ring in ricer plate groove (c) (FIG. 3).
2. Install reservoir (a) with vent (m) facing toward the
rear left (n) of the G3 base. See FIG. 17 for correct
orientation of these parts to ensure proper installa-
tion.
3. Position strap wrench over reservoir and use it to
turn reservoir 1/4 turn clockwise till reservoir will not
turn any farther.
Reservoir Installation - 4 Liter and Larger
Models Only
1. Grease new o-ring (3) (included in kit) and install
o-ring around reservoir adapter (p) as shown in
(FIG. 18).
1. Install reservoir onto adapter. Position strap wrench
around lower portion of reservoir as indicated in FIG.
19 and use it to turn the reservoir clockwise to
tighten it to the base.
To ensure the reservoir is tightened sufficiently, but
not over tightened:
a. First turn reservoir clockwise one full turn.
b. Then continue to turn the reservoir clockwise for
a second turn until the vent (q) in the reservoir
faces the back of the G3 pump and the horizon-
tal lines (r) molded into the reservoir align with
the pump outlets (s) on each side of the pump
base as shown in FIG. 19.
FIG. 16
FIG. 17
NOTICE
Be careful when installing reservoir that o-ring is not
pinched. If the o-ring is not correctly installed,
grease could leak out of the bottom of the G3 reser-
voir.
c
3
a
n
m
FIG. 18
3
p
ti16430

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 3A0535
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2010, Graco Inc. is registered to ISO 9001
www.graco.com
6/2010, revised 10/2010
c. When reservoir is correctly aligned and tight-
ened to the base you will have turned it approxi-
mately 2 full turns.
NOTE: Be careful to not overtighten reservoir.
FIG. 19
ti15454
qr
s
strap wrench