Graco 332339B User Manual

Instructions-Parts

Dosing Pumps

To pressurize and proportion fluid in a ProMix® PD2K Electronic Positive Displacement Proportioning
System.
For professional use only.

Important Safety Instructions
Read all warnings and instructions in this manual
and in your PD2K proportioner manual. Save these
instructions.

Seepage2
informat

for model part numbers and

ion.

332339B

EN

PROVEN QUALITY. LEADING TECHNOLOGY.

Contents

Models............................................................... 2

Warnings ........................................................... 3

Setup................................................................. 5

Pump Components ...................................... 5

Air Connections ........................................... 6

Fluid Connections........................................ 8

Electrical Connection.................................... 8

Repair................................................................ 9

Preventive
Disconnect
Driver Rep
Lower Repa

Maintenance Schedule ................ 9

the Lower from the Driver............ 9

air ............................................... 10

ir............................................... 12

Models

Pump Part No.

24T788 A 35cc low pressure pump

24T789 A 35cc high pressure pump

24T790 A 70cc lo

24T791 A 70cc high pressure pump

Series Description (see NOTE below)

w pressure pump

Reconnect the

Parts.................................................................. 17

Pump Assembly........................................... 17

Lower Pump Assembly................................. 18

Pump Driver Assembly ................................. 20

Repair Kits, Related Manuals, and

Accessories .......................................... 21

Dimensions

Technical Data ...................................................23

Graco Standard Warranty.................................... 24

........................................................ 22

Lower to the Driver ................ 16

Maximum Fluid Working Pressure,
psi (MPa, bar)

300 (2.1

1500 (10.5, 105)

300 (2.1, 21)

1500 (

,21)

10.5, 105)

NOTE:
pump
pump

Fi

Lower pumps marked with a 3 on the bottom right of the identification label are 35cc displacement
s. Lower pumps marked with a 7 on the bottom right of the identification label are 70cc displacement
s.

gure 1 35cc Pump Identification Label

Figure 2 70cc Pump Identification Label

2

332339B

Warnings

Warnings

The following
exclamation p
risks. When th
Warnings. Pr
the body of th

warnings are for the setup, use, grounding, maintenance and repair of this equipment. The
oint symbol alerts you to a general warning and the hazard symbol refers to procedure-specific

ese symbols appear in the body of this manual or on warning labels, refer backtothese

oduct-specific hazard symbols and warnings not covered in this section may appear throughout

is manual where applicable.

WARNING

FIRE AND EXPLOSION HAZARD

Flammable
prevent fir

• Use equipment only in well ventilated area.

• Eliminat
plastic d

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable
fumes are present.

•Grounda

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless
they are antistatic or conductive.

• Stop op
equipm

• Keep a working fire extinguisher in the work area.

fumes, such as solvent and paint fumes, in work area can ignite or explode. To help

e and explosion:

e all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and

rop cloths (potential static arc).

ll equipment in the work area. See Grounding instructions.

eration immediately if static sparking occurs or you feel a shock, Do not use

ent until you identify and correct the problem.

SKIN INJECTION HAZARD

High-pressure fluid from gun, 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 amputation. Get immediate surgical
treatment.

•Dono

• Engage trigger lock when not spraying.

• Do not point gun at anyone or at any part of the body.

•Dono

• Do not stop or deflect leaks with your hand, body, glove, or rag.

• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before

•Tig

• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

332339B 3

t spray without tip guard and trigger guard installed.

t put your hand over the spray tip.

cleaning, checking, or servicing equipment.

hten all fluid connections before operating the equipment.

Warnings

WARNING

MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

•Pressurized
equipment, f

equipment can start without warning. Before checking, moving, or servicing

ollow the Pressure Relief Procedure and disconnect all power sources.

TOXIC FLUID
Toxic fluids
inhaled, or

• Read MSDSs to know the specific hazards of the fluids you are using.

• Store haza
guideline

• Always wear chemically impermeable gloves when spraying, dispensing, or cleaning
equipment.

PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury,
including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective
equipment includes but is not limited to:

• Protective eyewear, and hearing protection.

• Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.

EQUIPM
Misuse

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

•Donot

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data

• Do not leave the work area while equipment is energized or under pressure.

•Turn

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine

• Do not alter or modify equipment. Alterations or modifications may void agency approvals

•Mak

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

•Do

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

can cause death or serious injury.

m component. See Technical Data in all equipment manuals.

syste

in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request MSDS from distributor or retailer.

off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

manufacturer’s replacement parts only.

and create safety hazards.

e sure all equipment is rated and approved for the environment in which you are using it.

not kink or over bend hoses or use hoses to pull equipment.

OR FUMES

or fumes can cause serious injury or death if splashed in the eyes or on skin,

swallowed.

rdous fluid in approved containers, and dispose of it according to applicable

s.

ENT MISUSE HAZARD

exceed the maximum working pressure or temperature rating of the lowest rated

4

332339B

Setup

Setup

Pump Componen

ts

Component

A

BDriver

C

DUpInletDoseValve

E Down Inle

F

G Down Outlet Dose Valve

H

J

K

L

M

N

Description

Stepper Motor

Pump Lower

tDoseValve

Up Outlet Dose Valve

Fluid Ou

Fluid Inlet Check Valve

Fluid Inlet Manifold

Fluid
Valve

Fluid Outlet Pressure
Sensor

Cable Connection to
Pump Control Module

tlet Manifold

Outlet Check

Figure 3 Pump Components

P Fluid Inlet Pressure

Gauge

R

SF

T

Fluid Outlet Fitting (1/4
npt(m)

luid Inlet Fitting (1/4
pt(m)

n

Jam Nuts, for mounting
pump

332339B 5

Setup

Air Connectio

Red and green 5/32 in. (4 mm) tubing connects the
solenoid manifold to the pump’s dosing valves. See
the Pump Tubing Schematic on the next page.

NOTE: Tubing
mm ± 13 mm) for
lengths of tu
Lengths lon
valve respo

1. On the bottom of the solenoid manifold are four

ports with tube fittings: UP OPEN, UP CLOSED,
DOWN OPEN, and DOWN CLOSED. These
ports provide air to open and close the pump’s
inlet dosing valves.

bing, to balance the timing of the valves.
ger than 18 in. (457 mm) will increase
nse time.

ns

lengths must be 18 in. ± 1/2 in. (457

all connections. Always use equal

Figure 5 Inlet Manifold Tubing Connections

2. On the side of the solenoid manifold are four

ports with 90° tube fittings (not shown): UP
OPEN, UP CLOSED, DOWN OPEN, and DOWN
CLOSED. These ports provide air to open and
close the pump’s outlet dosing valves.

Figure 4 Tubing Connections at Solenoid
Manifold, to Pump Inlet Manifold

a. Connect green tubing (G) from the UP OPEN

fitting to the 90° tube fitting on the side of the
INLET UP dosing valve.

b. Connect red tubing (R) from the UP CLOSED

fitting to the 90° tube fitting on the end of the
INLET UP dosing valve.

c. Connect green tubing (G) from the DOWN

OPEN fitting to the 90° tube fitting on the side
oftheINLETDOWNdosingvalve.

d. Connect red tubing (R) from the DOWN

CLOSED fitting to the 90° tube fitting on the
end of the INLET DOWN dosing valve.

Figure 6 Tubing Connections at Solenoid
Manifold, to Pump Outlet Manifold

a. Conne

b. Conne

ctgreentubing(G)fromtheUPOPEN

g to the 90° tube fitting on the side of the

fittin
OUTLE

fitti
OUTL

Figure 7 Outlet Manifold Tubing Connections

TUPdosingvalve.

ct red tubing (R) from the UP CLOSED

ng to the 90° tube fitting on the end of the

ET UP dosing valve.

6 332339B

Setup

c. Connect green tubing (G) from the DOWN

OPEN fitting to the 90° tube fitting on the side

of the OUTLET DOWN dosing valve.

d. Connect red tubing (R) from the DOWN

CLOSED fitting to the 90° tube fitting on the

end of the OUTLET DOWN dosing valve.

3. Repeat these steps for each pump in your

system.

UP

EXH

G
R
G

R

See the following table to understand the relationship
between pump stroke and dose valve actuation.

Table 1 Dose Valve Actuation

Pump
Stroke

Up

Down

Up Inlet

Valve

Down

Inlet

Valve

Up

Outlet

Valve

Down
Outlet
Valve

Open Closed Open Closed

Closed Open Closed Open

OPEN

INLET UP

CLOSED

OPEN

CLOSED

OUTLET UP

DOWN

ure 8 Pump Tubing Schematic

Fig

EXH

OPEN

G
R
G

R

CLOSED

OPEN

CLOSED

INLET DOWN

OUTLET DOWN

332339B

7

Setup

Fluid Connect

1. Connect a 1/4 npt(f) fluid hose from the fluid

source to the check valve (J) at the pump’s fluid
inlet manifold (K). The inlet dose valves (D, E)
will open and close alternately at the pump stroke
changeover, to maintain a steady flow into the
pump.

2. Connect a 1/4 npt(f) fluid outlet hose from the

check valve (L) at the pump’s fluid outlet manifold
(H). The outlet dose valves (F, G) will open and
close alternately at the pump stroke changeover,
to maintain a steady flow out of the pump.

ions

Electrical Co

nnection

NOTICE

To avoid electrical component damage, remove all
system power before plugging any connectors.

Connect the cable from the pump control module in
the proportioner’s electrical control box to the cable
connector (N) on the pump motor (A).

The cable has two connectors, one for the motor
control and the other for encoder feedback. The
connectors are keyed differently to ensure correct
installation.

Figure 9 Fluid Connections

8 332339B

Repair

Repair

Preventive Maintenance Schedule

The operatin
determine ho
Establish a p
recording w
needed, and
checking yo

g conditions of your particular system

w often maintenance is required.

reventive maintenance schedule by

hen and what kind of maintenance is

then determine a regular schedule for

ur system.

Disconnect the Lower from the Driver

This equi
is manual
injury fr
splashi
Pressur
when you
checkin

1. Follow

pment stays pressurized until pressure

ly relieved. To help prevent serious

om pressurized fluid such as skin injection,

ng fluid, and moving parts, follow the

e Relief Procedure in your system manual

stop spraying and before cleaning,

g, or servicing the equipment.

the Pressure Relief Procedure in your

tioner manual. Stop the pump at the

propor
bottom

of its stroke.

6. Disconnect all air and fluid lines from the dosing

valves and manifolds. Be sure to label the lines
to ensure they are re-connected correctly.

7. Pull the lower away from the driver.

a. To service the driver, see

Driver Repair, page 10.

b. To service the lower, see

Lower Repair, page 12.

2. Remove

expla

3. Remov

4. Unscr

5. Move t

rod (
the p

NOTE
rod (
to co
dri
Dis
rod
pis

the pump from the proportioner, as

ined in your proportioner manual.

e the TSL inlet fitting (17) and set aside.

ew the connecting nut (207).

he o-ring (106) down onto the pump piston

2) to allow access to the pin (103). Remove
in.

: If you are only repairing the piston

2) and its packings, it is not necessary
mpletely remove the lower from the

ver. After removing the pin (103), go to

assemble the Lower, page 12 and push the

down out of the cylinder. Disassemble the

ton rod as explained there.

Figure 10 Disconnect the Lower from the Driver

332339B 9

Repair

Driver Repair

Disassemble t

1. See Disconnec

9.

2. Remove the fo

the motor (20
motor-side c
come off with

3. Pull the act

(203). Do no
from the rec
guide (205
be removed
replacing

he Driver

oupler (201a) and insert (201b) will

uator (201) out the top of the housing

t remove the actuator-side coupler

ess at the top of the actuator. The

) and coupling nut (204) should only

if they are damaged or you are

the actuator.

t the Lower from the Driver, page

ur screws (201e) and remove

2) from the actuator (201). The

the motor.

Reassemble th

1. If the guide (2

removed, appl
the bottom th
the guide and
nut to 15–25 f
for the adhes

2. Apply threa

actuator sl
housing (20
in the groov
into the ho

eDriver

05) and coupling nut (204) were
y primer and thread adhesive to

reads of the actuator (201). Install

coupling nut. Torque the coupling

t-lb (20–34 N•m). Allow 12 hours

ivetocure.

d adhesive to the threads on the

eeve. Insert the actuator (201) into the

3) so the tabs of the guide (205) slide
e in the housing. Screw the actuator

using.

NOTICE

To prevent
motor-si
flush with

3. Check that the motor-side coupler (201a) surface

is flush with the end of the motor shaft. Torque
the two screws (201c) to 35–45 in-lb (4–5 N•m).

4. Ensure that the coupler insert (201b) is in

place. Mount the motor (202) onto the actuator
so the two couplers engage. Inspect the
motor-to-actuator fit; the motor must rest flat on
the actuator housing.

possible damage to the motor, the

de coupler (201a) surface must be

the end of the motor shaft.

NOTICE

motor does not rest flat on the actuator

If the

ng, determine the cause and correct

housi

e installing the screws (201d). An

befor

rect fit will create a thrust load on the

incor

r shaft, which will cause motor failure if

moto

ated.

oper

5. Install the four screws (201d).

6. See Reconnect the Lower to the Driver, page 16.

10 332339B

Repair

Figure 1

1DriverAssembly

332339B

11

Repair

Lower Repair

Disassemble t

1. Remove the low

Disconnect th

2. Remove the to

to expose the

3. Push the pist

bottom of th

4. Disassembl

flats on both
(12–16, 42)

5. Unscrew th

upper thro
(7), packi

6. Remove th

packing n
(4). Remo
bearing (

he Lower

e Lower from the Driver, page 9 .

p and bottom throat cartridges (4)

piston rod (2a/2b).

on rod assembly down out the

e cylinder (1).

e the piston rod (2a, 2b), using the

ends. Remove the piston parts

from the lower rod (2b).

e upper packing nut (5) from the

at cartridge (4). Remove the o-rings

ngs (10), and bearing (11).

e rod guard (8). Unscrew the lower

ut (6) from the lower throat cartridge

ve the o-rings (7), packings (10), and

11).

er from the driver; see

NOTE: The 70 cc
u-cups (10) in
cc lower 24T7

7. Unscrew the d

manifolds (1
and o-rings (

8. Disconnect

the cylinde
o-rings (33

9. Remove the

(19, 20) to
(21).

10. Clean and i

9 and 20). Remove the seats (23)

22, 24).

the inlet (29) and outlet (28) tubes at

r (1). Remove the adapters (27) and

).

screws (26) holding the manifolds

the cylinder (1). Remove the o-rings

nspect all parts.

lower 24T793 includes two

the lower throat cartridge; the 35

92 includes one.

osing valves (25) from the

2

1

332339B

Repair

Figure 12 Lower Pump Assembly

332339B 13

Repair

Reassemble the Lower

1. Install the manifolds (19, 20) on the cylinder (1).

Lubricate the o-rings (21) and ensure they are
in place on the mating surfaces. Apply thread
adhesive to the screws (26) and torque to 13–23
in-lb (1.5–2.5 N•m).

2. Lubricate the o-rings (33). Apply thread lubricant

and install the adapters (27) and o-rings (33) on
the cylinder (1). Connect the inlet (29) and outlet
(28) tubes at the cylinder (1).

3. Lubricate the o-rings (22, 24). Install the o-rings

(22), seats (23), and o-rings (24) in the manifolds
(19 and 20). Apply thread lubricant and screw
the dosing valves (25) into the manifolds. Torque
to 20–30 ft-lb (28–40 N•m).

4. Lubricate the piston packings (16) and o-ring

(42). Assemble the piston on the lower rod (2b)
as follows:

a. Install o

(shorter

b. Install o

the pist
away fro
bearing

ne washer (12) and the bottom

)spacer(13).

ne packing (16) on each shoulder of

on bearing (14), with the lips facing

m the bearing. Install the piston

(14).

5. Apply thread adhesive to the male threads of the

lower rod (2b). Screw the upper piston rod (2a)
onto the lower rod, using the flats on both ends.
Torque to 35–45 ft-lb (48–61 N•m).

6. Insert the piston rod assembly into the cylinder

(1) from the bottom. Push the rod up until it
protrudes from the top of the cylinder (1).

NOTE: The 70 cc lower 24T793 includes two
u-cup packings (10) in the lower throat cartridge;
the 35 cc lower 24T792 includes only the upper
one.

7. Lubricate the o-rings (7) and packing(s) (10).

Place the upper packing (10) into the tool (T)
included with the seal kit. The lips of the packing
must face out of the tool. Insert the tool into the
lower throat cartridge (4). Push on the tool’s
shaft (P) to seat the packing securely in the
cartridge. When seated, the lips of the packing
will be facing up. Install the bearing (11). On 70
cc lowers only, install the second packing (10)
with the lips also facing up.

c. Install

Figure 13 Piston Rod Assembly

the o-ring (42), the top (longer) spacer
nd one washer (12).

(15), a

Figure 14 Lower Throat Assembly

4

1

332339B

Repair

8. Install the o-rings (7) on the lower packing nut

(6). Screw the packing nut into the lower throat
cartridge (4). Torque to 20–30 ft-lb (28–40 N•m).

9. Slide the lower packing cartridge (4) onto the

piston rod (2) and screw the cartridge into the
cylinder (1). Torque to 35–45 ft-lb (48–61 N•m).

10. Screw the rod guard (8) securely onto the lower

packing nut (6). Make sure the plug (9) is in place
at the bottom of the rod guard.

11. Lubricate the o-rings (7) and packing(s) (10).

Place one packing (10) into the tool (T) included
with the seal kit. The lips of the packing must
face out of the tool. Insert the tool into the upper
throat cartridge (4). Push on the tool’s shaft (P)
to seat the packing securely in the cartridge.
When seated, the lips of the packing will be
facing down. Install the bearing (11). Install the
second packing (10) with the lips facing down.

12. Install the o-ring (7) on the upper packing nut

(5). Screw the packing nut into the upper throat
cartridge (4). Torque to 20–30 ft-lb (28–40 N•m).

13. Slide the upper packing cartridge (4) onto the

piston rod (2) and screw the cartridge into the
cylinder (1). Torque to 35–45 ft-lb (48–61 N•m).

14. Install the lower on the driver; see

Reconnect the Lower to the Driver, page 16.

e 15 Upper Throat Assembly

Figur

332339B 15

Repair

Reconnect the Lower to the Driver

1. Ensure that th

set aside.

2. Screw the jam n

onto the pump c
bottom of the

3. Align the hol

ports in the t

4. Torque the j

N•m).

5. Reinstall t

6. Place the o

7. Align the h

Install th

8. Slide the o

into the g
pin.

9. Screw the

connecto
N•m).

10. Reinsta

explain

ed in your proportioner manual.

e air fitting (17) is removed and

threads.

es in the connector (104) with the
hroat cartridge (4).

am nut (105) to 65–75 ft-lb (88–101

he TSL inlet fitting (17) in the open port.

-ring(106)onthepistonrod(2).

oles in the motor shaft and piston rod.

epin(103).

-ring (106) up off the piston rod and

roove on the motor shaft, covering the

connecting nut (207) onto the

r (104). Torque to 45–55 ft-lb (61–74

ll the pump on the proportioner, as

ut (105) and connector (104)
ylinder (1), all the way to the

Figure 16 Reconnect the Lower to the Driver

Figure 17 Orient the Lower to the Driver

16 332339B

Parts

Pump Assembly

Parts

24T788, Seri
24T789, Seri
24T790, Seri
24T791, Ser

es A, 35 cc Low Pressure Pump
es A, 35 cc High Pressure Pump
es A, 70 cc Low Pressure Pump

iesA,70ccHighPressurePump

Part Description

Ref

101 24T794 DRIVER, low

Models 24T7
24T790; see
Assembly,

24T795 DRIVER, high pressure;

Models 24T789 and
24T791; see Pump Driver
Assembly, page 20

102 24T792

24T793

103 16N76

104 16N74

105 16N74

106 1154

108 16F1

109 24T310 VALVE, check 2

110 121399

11124

112 119226

113 104984

114 166421 NIPPLE; 1/4 npt 1

115 187876

85

64

T786

24T809

112941

LOWER, p
cc; Mode
24T789;
Assembl
LOWER, pump, 70
cc; Models 24T790 and
24T791; see Lower Pump
Assembly, page 18

2

4

8

oupler

PIN, c

CONNECTOR

am

NUT, j

O-RING

FITTING, sensor,
pressure

O-RING; chemically
resistant
SENSOR, fluid outlet
pressure (24T788 and
24T790)

ENSOR, fluid outlet

S

ressure (24T789 and

p
24T791)
ADAPTER; 1/4 npt (m x
f); sst
TEE; 1/4 npt (f)

GAUGE, pressure, fluid
(24T788 and 24T790)
GAUGE, pressure, fluid
(24T789 and 24T791)

pressure;

88 and

Pump Driver

page 20

ump, 35

ls 24T788 and

see Lower Pump

y, page 18

Qty

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

332339B

17

Parts

Lower Pump Assembly

24T792, Serie
24T793, Serie

A fourth u-cup (10) is used in this position on

Model 24T793 only.

s A, 35 cc Lower
s A, 70 cc Lower

18 332339B

24T792, Series A, 35 cc Lower
24T793, Series A, 70 cc Lower

Part Description

Ref

1 24U604

24U605

2 24T842 KIT, piston r

———

2a

———

2b

4 16N750

5

16N751 NUT, pack

6 16T350 NUT, pack

7

* † O-RING; ptfe

8 16T352

16T351

9 100361

———

10

*
†

11

* † BEAR

12

*† WASH

-——

13

*
†

—

-—

14

*
†

—

-—

15

*

CYLINDER, 35 c
Model 24T792
CYLINDER, 70 cc;
Model 24T793

assembly; i
items 2a and
ROD, piston, upper

ROD, piston, lower

FITTING, throat
cartridge

GUARD, rod; Model
24T792
GUARD, r
24T793
PLUG, pipe; 1/2 npt

PACKING, throat,
u-cup; UHMWPE;
For Model 24T792 3

For Model 24T793 4

ING, throat

ER, piston

ER, piston,

SPAC

tom

bot
For Model 24T792 1

For Model 24T793 1

BEARING, piston

For Model 24T792 1

For Model 24T793 1

SPACER, piston, top

For Model 24T792 1

c;

od

ncludes

2b

ing, upper

ing, lower

od; Model

Qty

1

1

1

1

1

2

1

1

5

1

1

1

2

2

Part Description

Ref

†

-——

16

*
†

17 111328

18 104644

19 24T810

20 24T811

21

* † O-RING; ptfe

22

* † ◆ O-RING; ptfe

◆

23

24

* † ◆ O-RING; ptfe

25 15X303 VALVE, dispense;

26 104472

‡

27

‡

28

‡

29

-——

31

32

* † O-RING; ptfe

33

* †‡ O-RING; ptfe

42

* † O-RING; chemically

For Model 24T793 1

PACKING, pist
u-cup; UHMWPE
For Model 24T

For Model 24

CONNECTOR, male;
10–32 x 5/32 in. (4
mm) OD tube
PLUG, scre

MANIFOLD
includes
and 23
MANIFOLD, outlet;
includes items 22
and 23

RETAIN
valve

see manual 312782
SCREW
head;
(38 m
ADAPTER, pump 2

TUBE, outlet 1

TUBE, inlet 1

PLUG, pump

resistant

ER, seat,

, cap, socket

10–32 x 1.5 in.

m)

on,

792

T793

w; 10–32

, inlet;

items 22

Parts

Qty

2

2

2

4

1

1

2

4

4

4

4

8

1

1

2

1

tems marked — — — are not available separately.

I

* Included in 35 cc Lower Seal Repair Kit 24T895, which must be purchased separately.

† Included in 70 cc Lower Seal Repair Kit 24T896, which must be purchased separately.

◆ Included in Dosing Valve Seat Replacement Kit 24T843, which must be purchased separately.

‡ Included in Tube Assembly Kit 24T822, which must be purchased separately.

332339B 19

Parts

Pump Driver Assembly

24T794, Serie
24T795, Serie

s A, Low Pressure Pump Driver
s A, High Pressure Pump Driver

Part Descri

Ref

201 16N742

16N777

-——

201a

———

201b

-——

201c

———

201d

202 16P

203 16N743

Items marked — — — are not available separately.

037

16P036

ption

ACTUATOR, linear;
for 24T794
ACTUA
for 24
COUPLER

INSERT, coupler

SCREW, coupler

SCREW, motor
mounting
MOTOR, stepper, 23
frame; for 24T794
MO
fr
HOUSING, actuator;
for 24T794

TOR, linear;

T795

TOR, stepper, 34

ame; for 24T795

Qty

1

1

1

1

2

4

1

1

1

Part Descri

Ref

16N781

204 16N758

16N785

205 16N7

206 16N835 NUT, jam 2

207 16N745 NUT, connecting 1

64

16N783

ption

HOUSING, actuator;
for 24T795
NUT, c
24T79
NUT, coupling; for
24T795
GUIDE, rod; for
24T794
GUI
24T

oupling; for

4

DE, rod; for

795

Qty

1

1

1

1

1

20 332339B

Repair Kits, Rel

ated Manuals, and Accessories

Repair Kits, Related Manuals, and Accessories

Description Kit Part No. Kit Description

All pumps in this manual.

Model 24T792 35 cc Lower 24T840

Model 24T793 70 cc Lower 24T841

24T843

24T302

24T303

Dosing Valve S
Kit. Includes
all four dosi

TSL Cup Kit

Throat Seal Installation Tool. Also
included in Seal Kits 24T840 and
24T841.

Pump Seal R
24T303 Thr
Tool.

Pump Seal Repair Kit. Includes
24T303 Throat Seal Installation
Tool.

eat Replacement

seats and o-rings for

ng valves on a pump.

epair Kit. Includes

oat Seal Installation

332339B

21

Dimensions

Dimensions

Pump Model

24T788,
24T789

24T790,
24T791

2

2

A, in. (mm) B, in. (mm) C, in. (mm) D, in. (mm) E, in. (mm)

33.0 (838) 7.375 (187) 8.25 (210) 7.50 (191) 13.375 (340)

34.25 (870) 7.375 (187) 8.25 (210) 7.50 (191) 14.50 (368)

332339B

Technical Data

Technical Data

Dosing Pumps

Maximum fluid working
pressure:

24T788 and 24

24T789 and 24T791 1500 psi 10.5 MPa, 105 bar

Maximum working air
pressure:

Air supply: 85–100 psi

Fluids han

Viscosity range of fluid:

Fluid inlet size:

Fluid outlet size:

Air inlet size (dosing
valves):

Stepper motor

dled:

T790

one or two component:

• solvent and waterborne paints

• polyurethanes

• epoxies

• acid catalyzed varnishes

• moisture sensitive isocyanates

5/32 in. OD tube 4 mm OD tube

U.S.

300 psi 2.1 MPa, 21 ba

100 psi 0.7 MPa, 7.0 bar

0.6–0.7 MPa, 6.0–7.0 bar)

20–5000 centipoise

1/4 npt(m)

1/4 npt(m)

48 Vdc, 4 amp

Metric

r

The motor includes an encoder and internal controller requiring step and direction

input integration to a PD2K controller or similar control module to operate.

Operating temperature
range:

Weight:

T788 and 24T790

24

24T789 and 24T791 23.5 lb 10.7 kg

Sound data: Less than 75 dB(A)

Wetted parts:

41–122°F 5–50°C

.2 lb

21

17–4PH, 303, 304 SST, Tungsten carbide (with nickel binder),

erfluoroelastomer; PTFE, PPS, UHMWPE

p

6kg

9.

332339B 23

Graco Standard

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,
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.

extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of

Warranty

Graco Information

For the latest information about Graco products, visit www.graco.com.

To place an order, contact your Graco Distributor or call to identify the nearest distributor.

Phone: [phone] or Toll Free: 1-800-328-0211 Fax: [phone]

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.

For patent information, see www.graco.com/patents.

Original Instructions. This manual contains English. MM 332339

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

Copyright 2013, Graco Inc. All Graco manufacturing locations are registeredtoISO9001.

www.graco.com

Revised October 2013