Graco 332339Bdosing Pumps Users Manual 332339B, Instructions Parts For Dosing Pumps, English
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2015-04-02
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Instructions-Parts
Dosing Pumps 332339B
EN
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.
Seepage2for model part numbers and
information.
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 Maintenance Schedule ................ 9
Disconnect the Lower from the Driver............ 9
Driver Repair ............................................... 10
Lower Repair ............................................... 12
Reconnect the Lower to the Driver ................ 16
Parts.................................................................. 17
Pump Assembly........................................... 17
Lower Pump Assembly................................. 18
Pump Driver Assembly ................................. 20
Repair Kits, Related Manuals, and
Accessories .......................................... 21
Dimensions ........................................................ 22
Technical Data ...................................................23
Graco Standard Warranty.................................... 24
Models
Pump Part No. Series Description (see NOTE below) Maximum Fluid Working Pressure,
psi (MPa, bar)
24T788 A 35cc low pressure pump 300 (2.1,21)
24T789 A 35cc high pressure pump 1500 (10.5, 105)
24T790 A 70cc low pressure pump 300 (2.1, 21)
24T791 A 70cc high pressure pump 1500 (10.5, 105)
NOTE: Lower pumps marked with a 3on the bottom right of the identification label are 35cc displacement
pumps. Lower pumps marked with a 7on the bottom right of the identification label are 70cc displacement
pumps.
Figure 1 35cc Pump Identification Label Figure 2 70cc Pump Identification Label
2332339B
Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific
risks. When these symbols appear in the body of this manual or on warning labels, refer backtothese
Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout
the body of this manual where applicable.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help
prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and
plastic drop cloths (potential static arc).
• 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
ll equipment in the work area. See Grounding instructions.
• 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 operation immediately if static sparking occurs or you feel a shock, Do not use
equipment until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
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
t spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Do not point gun at anyone or at any part of the body.
•Dono
t put your hand over the spray tip.
• 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
cleaning, checking, or servicing equipment.
•Tig
hten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
332339B 3
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 can start without warning. Before checking, moving, or servicing
equipment, follow the Pressure Relief Procedure and disconnect all power sources.
TOXIC FLUID OR FUMES
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin,
inhaled, or swallowed.
• Read MSDSs to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable
guidelines.
• 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.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
•Donot
exceed the maximum working pressure or temperature rating of the lowest rated
system component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request MSDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
•Turn
off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals
and create safety hazards.
•Mak
e sure all equipment is rated and approved for the environment in which you are using it.
• 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
not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
4332339B
Setup
Setup
Pump Components
Figure 3 Pump Components
Component Description
AStepper Motor
BDriver
CPump Lower
DUpInletDoseValve
E Down InletDoseValve
FUp Outlet Dose Valve
G Down Outlet Dose Valve
HFluid Outlet Manifold
JFluid Inlet Check Valve
KFluid Inlet Manifold
LFluid Outlet Check
Valve
MFluid Outlet Pressure
Sensor
NCable Connection to
Pump Control Module
P Fluid Inlet Pressure
Gauge
RFluid Outlet Fitting (1/4
npt(m)
SF
luid Inlet Fitting (1/4
npt(m)
TJam Nuts, for mounting
pump
332339B 5
Setup
Air Connections
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 lengths must be 18 in. ± 1/2 in. (457
mm ± 13 mm) for all connections. Always use equal
lengths of tubing, to balance the timing of the valves.
Lengths longer than 18 in. (457 mm) will increase
valve response time.
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.
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 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 6 Tubing Connections at Solenoid
Manifold, to Pump Outlet Manifold
a. Connectgreentubing(G)fromtheUPOPEN
fitting to the 90° tube fitting on the side of the
OUTLETUPdosingvalve.
b. Connect red tubing (R) from the UP CLOSED
fitting to the 90° tube fitting on the end of the
OUTLET UP dosing valve.
Figure 7 Outlet Manifold Tubing Connections
6332339B
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.
See the following table to understand the relationship
between pump stroke and dose valve actuation.
Table 1 Dose Valve Actuation
Pump
Stroke
Up Inlet
Valve
Down
Inlet
Valve
Up
Outlet
Valve
Down
Outlet
Valve
Up Open Closed Open Closed
Down Closed Open Closed Open
INLET UP
OUTLET UP
OPEN
CLOSED
G
R
G
R
CLOSED
OPEN
UP EXH
INLET DOWN
OUTLET DOWN
OPEN
CLOSED
G
R
G
R
CLOSED
OPEN
DOWN EXH
Figure 8 Pump Tubing Schematic
332339B 7
Setup
Fluid Connections
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.
Figure 9 Fluid Connections
Electrical Connection
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.
8332339B
Repair
Repair
Preventive Maintenance Schedule
The operating conditions of your particular system
determine how often maintenance is required.
Establish a preventive maintenance schedule by
recording when and what kind of maintenance is
needed, and then determine a regular schedule for
checking your system.
Disconnect the Lower from the Driver
This equipment stays pressurized until pressure
is manually relieved. To help prevent serious
injury from pressurized fluid such as skin injection,
splashing fluid, and moving parts, follow the
Pressure Relief Procedure in your system manual
when you stop spraying and before cleaning,
checking, or servicing the equipment.
1. Follow the Pressure Relief Procedure in your
proportioner manual. Stop the pump at the
bottom of its stroke.
2. Remove the pump from the proportioner, as
explained in your proportioner manual.
3. Remove the TSL inlet fitting (17) and set aside.
4. Unscrew the connecting nut (207).
5. Move the o-ring (106) down onto the pump piston
rod (2) to allow access to the pin (103). Remove
the pin.
NOTE:If you are only repairing the piston
rod (2) and its packings, it is not necessary
to completely remove the lower from the
driver. After removing the pin (103), go to
Disassemble the Lower, page 12 and push the
rod down out of the cylinder. Disassemble the
piston rod as explained there.
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.
Figure 10 Disconnect the Lower from the Driver
332339B 9
Repair
Driver Repair
Disassemble the Driver
1. See Disconnect the Lower from the Driver, page
9.
2. Remove the four screws (201e) and remove
the motor (202) from the actuator (201). The
motor-side coupler (201a) and insert (201b) will
come off with the motor.
3. Pull the actuator (201) out the top of the housing
(203). Do not remove the actuator-side coupler
from the recess at the top of the actuator. The
guide (205) and coupling nut (204) should only
be removed if they are damaged or you are
replacing the actuator.
Reassemble theDriver
1. If the guide (205) and coupling nut (204) were
removed, apply primer and thread adhesive to
the bottom threads of the actuator (201). Install
the guide and coupling nut. Torque the coupling
nut to 15–25 ft-lb (20–34 N•m). Allow 12 hours
for the adhesivetocure.
2. Apply thread adhesive to the threads on the
actuator sleeve. Insert the actuator (201) into the
housing (203) so the tabs of the guide (205) slide
in the groove in the housing. Screw the actuator
into the housing.
NOTICE
To prevent possible damage to the motor, the
motor-side coupler (201a) surface must be
flush with the end of the motor shaft.
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.
NOTICE
If the motor does not rest flat on the actuator
housing, determine the cause and correct
before installing the screws (201d). An
incorrect fit will create a thrust load on the
motor shaft, which will cause motor failure if
operated.
5. Install the four screws (201d).
6. See Reconnect the Lower to the Driver, page 16.
10 332339B
Repair
Lower Repair
Disassemble the Lower
1. Remove the lower from the driver; see
Disconnect the Lower from the Driver, page 9 .
2. Remove the top and bottom throat cartridges (4)
to expose the piston rod (2a/2b).
3. Push the piston rod assembly down out the
bottom of the cylinder (1).
4. Disassemble the piston rod (2a, 2b), using the
flats on both ends. Remove the piston parts
(12–16, 42) from the lower rod (2b).
5. Unscrew the upper packing nut (5) from the
upper throat cartridge (4). Remove the o-rings
(7), packings (10), and bearing (11).
6. Remove the rod guard (8). Unscrew the lower
packing nut (6) from the lower throat cartridge
(4). Remove the o-rings (7), packings (10), and
bearing (11).
NOTE: The 70 cc lower 24T793 includes two
u-cups (10) in the lower throat cartridge; the 35
cc lower 24T792 includes one.
7. Unscrew the dosing valves (25) from the
manifolds (19 and 20). Remove the seats (23)
and o-rings (22, 24).
8. Disconnect the inlet (29) and outlet (28) tubes at
the cylinder (1). Remove the adapters (27) and
o-rings (33).
9. Remove the screws (26) holding the manifolds
(19, 20) to the cylinder (1). Remove the o-rings
(21).
10. Clean and inspect all parts.
12332339B
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 one washer (12) and the bottom
(shorter)spacer(13).
b. Install one packing (16) on each shoulder of
the piston bearing (14), with the lips facing
away from the bearing. Install the piston
bearing (14).
c. Install the o-ring (42), the top (longer) spacer
(15), and one washer (12).
Figure 13 Piston Rod Assembly
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.
Figure 14 Lower Throat Assembly
14332339B
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.
Figure 15 Upper Throat Assembly
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.
332339B 15
Repair
Reconnect the Lower to the Driver
1. Ensure that the air fitting (17) is removed and
set aside.
2. Screw the jam nut (105) and connector (104)
onto the pump cylinder (1), all the way to the
bottom of the threads.
3. Align the holes in the connector (104) with the
ports in the throat cartridge (4).
4. Torque the jam nut (105) to 65–75 ft-lb (88–101
N•m).
5. Reinstall the TSL inlet fitting (17) in the open port.
6. Place the o-ring(106)onthepistonrod(2).
7. Align the holes in the motor shaft and piston rod.
Install thepin(103).
8. Slide the o-ring (106) up off the piston rod and
into the groove on the motor shaft, covering the
pin.
9. Screw the connecting nut (207) onto the
connector (104). Torque to 45–55 ft-lb (61–74
N•m).
10. Reinstall the pump on the proportioner, as
explained in your proportioner manual.
Figure 16 Reconnect the Lower to the Driver
Figure 17 Orient the Lower to the Driver
16 332339B
Parts
Parts
Pump Assembly
24T788, Series A, 35 cc Low Pressure Pump
24T789, Series A, 35 cc High Pressure Pump
24T790, Series A, 70 cc Low Pressure Pump
24T791, SeriesA,70ccHighPressurePump
Ref Part Description Qty
101 24T794 DRIVER, low pressure;
Models 24T788 and
24T790; see Pump Driver
Assembly, page 20
1
24T795 DRIVER, high pressure;
Models 24T789 and
24T791; see Pump Driver
Assembly, page 20
1
102 24T792 LOWER, pump, 35
cc; Models 24T788 and
24T789; see Lower Pump
Assembly, page 18
1
24T793 LOWER, pump, 70
cc; Models 24T790 and
24T791; see Lower Pump
Assembly, page 18
1
103 16N762PIN, coupler 1
104 16N744CONNECTOR 1
105 16N748NUT, jam 1
106 115485 O-RING 1
108 16F164 FITTING, sensor,
pressure
1
109 24T310 VALVE, check 2
110 121399 O-RING; chemically
resistant
1
11124T786 SENSOR, fluid outlet
pressure (24T788 and
24T790)
1
24T809 SENSOR, fluid outlet
pressure (24T789 and
24T791)
1
112 119226 ADAPTER; 1/4 npt (m x
f); sst
1
113 104984 TEE; 1/4 npt (f) 1
114 166421 NIPPLE; 1/4 npt 1
115 187876 GAUGE, pressure, fluid
(24T788 and 24T790)
1
112941 GAUGE, pressure, fluid
(24T789 and 24T791)
1
332339B 17
Parts
24T792, Series A, 35 cc Lower
24T793, Series A, 70 cc Lower
Ref Part Description Qty
1 24U604 CYLINDER, 35 cc;
Model 24T792
1
24U605 CYLINDER, 70 cc;
Model 24T793
1
2 24T842 KIT, piston rod
assembly; includes
items 2a and 2b
1
2a ——— ROD, piston, upper 1
2b ——— ROD, piston, lower 1
4 16N750 FITTING, throat
cartridge
2
516N751 NUT, packing, upper 1
6 16T350 NUT, packing, lower 1
7* † O-RING; ptfe 5
8 16T352 GUARD, rod; Model
24T792
1
16T351 GUARD, rod; Model
24T793
1
9 100361 PLUG, pipe; 1/2 npt 1
10 ——— PACKING, throat,
u-cup; UHMWPE;
*For Model 24T792 3
†For Model 24T793 4
11 * † BEARING, throat 2
12 *† WASH
ER, piston 2
13 -—— SPACER, piston,
bottom
*For Model 24T792 1
†For Model 24T793 1
14 -——BEARING, piston
*For Model 24T792 1
†For Model 24T793 1
15 -——SPACER, piston, top
*For Model 24T792 1
Ref Part Description Qty
†For Model 24T793 1
16 -—— PACKING, piston,
u-cup; UHMWPE
*For Model 24T792 2
†For Model 24T793 2
17 111328 CONNECTOR, male;
10–32 x 5/32 in. (4
mm) OD tube
2
18 104644 PLUG, screw; 10–32 4
19 24T810 MANIFOLD, inlet;
includes items 22
and 23
1
20 24T811 MANIFOLD, outlet;
includes items 22
and 23
1
21 * † O-RING; ptfe 2
22 * † ◆ O-RING; ptfe 4
23 ◆RETAINER, seat,
valve
4
24 * † ◆ O-RING; ptfe 4
25 15X303 VALVE, dispense;
see manual 312782
4
26 104472 SCREW, cap, socket
head; 10–32 x 1.5 in.
(38 mm)
8
27 ‡ADAPTER, pump 2
28 ‡TUBE, outlet 1
29 ‡TUBE, inlet 1
31 -—— PLUG, pump 1
32 * † O-RING; ptfe 1
33 * †‡ O-RING; ptfe 2
42 * † O-RING; chemically
resistant
1
Items marked — — — are not available separately.
* 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, Series A, Low Pressure Pump Driver
24T795, Series A, High Pressure Pump Driver
Ref Part Description Qty
201 16N742 ACTUATOR, linear;
for 24T794
1
16N777 ACTUATOR, linear;
for 24T795
1
201a -—— COUPLER 1
201b ——— INSERT, coupler 1
201c -—— SCREW, coupler 2
201d ——— SCREW, motor
mounting
4
202 16P037 MOTOR, stepper, 23
frame; for 24T794
1
16P036 MOTOR, stepper, 34
frame; for 24T795
1
203 16N743 HOUSING, actuator;
for 24T794
1
Ref Part Description Qty
16N781 HOUSING, actuator;
for 24T795
1
204 16N758 NUT, coupling; for
24T794
1
16N785 NUT, coupling; for
24T795
1
205 16N764 GUIDE, rod; for
24T794
1
16N783 GUIDE, rod; for
24T795
1
206 16N835 NUT, jam 2
207 16N745 NUT, connecting 1
Items marked — — — are not available separately.
20 332339B
Repair Kits, Related Manuals, and Accessories
Repair Kits, Related Manuals, and Accessories
Description Kit Part No. Kit Description
24T843 Dosing Valve Seat Replacement
Kit. Includes seats and o-rings for
all four dosing valves on a pump.
24T302 TSL Cup Kit
All pumps in this manual.
24T303 Throat Seal Installation Tool. Also
included in Seal Kits 24T840 and
24T841.
Model 24T792 35 cc Lower 24T840 Pump Seal Repair Kit. Includes
24T303 Throat Seal Installation
Tool.
Model 24T793 70 cc Lower 24T841 Pump Seal Repair Kit. Includes
24T303 Throat Seal Installation
Tool.
332339B 21
Technical Data
Technical Data
Dosing Pumps U.S. Metric
Maximum fluid working
pressure:
24T788 and 24T790 300 psi 2.1 MPa, 21 bar
24T789 and 24T791 1500 psi 10.5 MPa, 105 bar
Maximum working air
pressure:
100 psi 0.7 MPa, 7.0 bar
Air supply: 85–100 psi 0.6–0.7 MPa, 6.0–7.0 bar)
Fluids handled: one or two component:
• solvent and waterborne paints
• polyurethanes
• epoxies
• acid catalyzed varnishes
• moisture sensitive isocyanates
Viscosity range of fluid: 20–5000 centipoise
Fluid inlet size: 1/4 npt(m)
Fluid outlet size: 1/4 npt(m)
Air inlet size (dosing
valves):
5/32 in. OD tube 4 mm OD tube
Stepper motor 48 Vdc, 4 amp
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:
41–122°F 5–50°C
Weight:
24T788 and 24T790 21.2 lb 9.6kg
24T789 and 24T791 23.5 lb 10.7 kg
Sound data: Less than 75 dB(A)
Wetted parts: 17–4PH, 303, 304 SST, Tungsten carbide (with nickel binder),
perfluoroelastomer; PTFE, PPS, UHMWPE
332339B 23
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
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: 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.
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
