Graco 25 User manual

3A2099D
EN
Instructions
Model 25 Force
Feed Direct Rotary
Lubricator
Suction fed box lubricator for dispensing mineral oil-based or synthetic lubricants. For
professional use only.
See page 2 for model information
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
II 2 G
Ex h T6 Gb

23A2099D
Models
Model Specifications
† = Pump (Pick A or B from Pump Table below).
# = Number of Pumps (Pick letter from Pump Quantity Table below)
Pump Table (†)
1000 PSI (MPa/ bar) Maximum pressure
Pump Quantity (#)
Model Max # of
Pumps
Dimensions
inch (cm) Approximate
Capacity
pints (liters)
Direct End Rotary Drive
A = Right
E = Left
A B Right (A) Left (E)
MAA†#A 1-4 7.59 (19.28) 8.84 (22.45) 6.25 (2.95) X
MAA†#E 1-4 7.59 (19.28) 8.84 (22.45) 6.25 (2.95) X
MAB†#A 5-8 11.59 (29.44) 12.84 (32.61) 9.25 (4.37) X
MAB†#E 5-8 11.59 (29.44) 12.84 (32.61) 9.25 (4.37) X
MAC†#A 9-12 16.59 (42.14) 17.84 (45.31) 13 (6.15) X
MAC†#E 9-12 16.59 (42.14) 17.84 (45.31) 13 (6.15) X
MAD†#A 13-16 20.59 (52.3) 21.84 (55.47) 16 (7.57) X
MAD†#E 13-16 20.59 (52.3) 21.84 (55.47) 16 (7.57) X
MAE†#A 17-20 25.29 (64.24) 26.84 (68.17) 19.75 (9.34) X
MAE†#E 17-20 25.59 (64.24) 26.84 (68.17) 19.75 (9.34) X
Part No. Pick Piston Size Drops/Stroke Cubic Inch/Stroke CC/Stroke Stokes/Minute
inch (cm) Max Min Max Min Max Min Max Min
562949 A 3/16 (0.47) 6 0.17 0.0122 0.0003 0.199 0.005 60 3
562950 B 5/16 (0.79) 12 0.25 0.0245 0.0005 0.399 0.008 60 3
NOTE: Pump displacement based on SAE30 Oil (SUS @ 100°F (37.78°C) at room temperature.
Pick
Letter
Pump Quantity
A0
B1
C2
D3
E4
F5
G6
H7
J8
K9
L10
M11
N12
P13
R14
S15
T16
U17
V18
W19
X20

Warnings
3A2099D 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual, refer back to these 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
When flammable fluids are present in the work area, such as gasoline and windshield wiper fluid, be
aware that flammable fumes can ignite or explode. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Keep work area free of debris, including rags and spilled or open containers of solvent and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Ground all equipment in the work area.
• Use only grounded hoses.
• If there is static sparking or you feel a shock, stop operation immediately. 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 dispensing 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 amputation. Get immediate surgical treat-
ment.
• Do not point dispensing device at anyone or at any part of the body.
• Do not put your hand over the fluid outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings
43A2099D
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.
• Do not 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.
• 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.
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.
ENTANGLEMENT HAZARD
Rotating parts can cause serious injury.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Do not wear loose clothing, jewelry or long hair while operating equipment.
• Equipment can start without warning. Before checking, moving, or servicing equipment, follow the
Pressure Relief Procedure and disconnect all power sources.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating area
of the equipment to help protect you from serious injury, including eye injury, hearing loss, inhalation of
toxic fumes, and burns. This equipment includes but is not limited to:
• Protective eye wear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
WARNING

Installation
3A2099D 5
Installation
Component Identification
Key:
A Sight feed cover
B Drip tube
C Feed regulator
D Pump mounting screws
E Metering plunger
F Pump crosshead
G Inlet tube
H Inlet strainer
J Sight chamber well
K Discharge plunger (shown at top of stroke)
L Reservoir
M Hand Crank
N Fill cover
P Drive shaft
R Sight glass
S Outlet Valve Metering Circuit
FIG. 1
A
B
C
D
EF
G
H
J
K
L
M
N
P
R
S

Installation
63A2099D
Grounding
Installation Procedure
NOTE: Reference letters used in the following instruc-
tions refer to Parts page 10 or Component Identification,
page 5.
The lubricator should be solidly mounted and aligned to
connect the drive shaft to the proper stroking or rotary
motion. This drive motion, through the lubricator drive,
should operate the lubricator drive shaft and hand crank
shaft between 3 and 60 RPM. There is one pump stroke
for every revolution of the hand crank shaft, which is an
extension of the drive shaft shaft.
1. Select a mounting surface that will satisfy the follow-
ing goals:
• Is able to support the weight of the reservoir
and fluid when filled to capacity.
NOTE: When possible, mount to a surface that
experiences little or no vibration.
• Allows easy access to the lubricator for filling
the reservoir and periodic maintenance.
• The lubricator must be grounded through the
mounting bolts.
2. Install reservoir (L) to the mounting surface. Use the
mounting diagram (page 13) to determine location
to drill mounting holes.
3. Install bolts through reservoir and mounting holes
and tighten securely.
4. Install protective guards around all drive compo-
nents.
5. Remove fill cap (A) and fill reservoir with new or
clean, filtered fluid until it reaches the top of the res-
ervoir gauge glass.
Start Up
NOTE: Reference letters used in the following instruc-
tions refer to Component Identification, page 5.
1. For initial start-up, prime the pump by removing
screw from outlet metering circuit (S) (FIG. 2) and
filling the small chamber with oil. Reattach the
screw, making sure the spring lines up vertically.
2. Adjust the pump for maximum delivery by turning
the feed regulator (C) counter- clockwise as indi-
cated by the directional arrow (FIG. 2).
3. Operate pumps at this setting and bleed lubrication
lines at the terminal check valve to assure full lubri-
cation.
Feed Rate Regulation
The proper drive shaft shaft RPM is determined from the
required maximum and minimum pump feed rates.
Each pumping unit is regulated independently by means
of the feed regulator (C). When a pump is correctly set
to its required feed rate, the feed rate can still be
increased or decreased by the feed regulator (C). In
most cases due to the wide adjustment range of the
pump units, there will be considerable allowance in the
selection of the proper drive shaft speed.
• Turn the feed regulator (C) clockwise to DECREASE
the feed.
• Turn the feed regulator (C) counter-clockwise to
INCREASE the feed.
The equipment must be grounded. Grounding
reduces the risk of static and electric shock by
providing an escape wire for the electrical current due
to static build up or in the event of a short circuit.
FIG. 2
c
S

Service
3A2099D 7
Hand Crank Operation
The hand crank (M), located on the end of the lubricator
(FIG. 3) is used for starting or for momentarily increasing
the lubricant supply while the lubricator is in operation. It
operates all feeds at once, but does not affect feed regu-
lation.
Refilling the Reservoir
Remove fill cap (N) and fill reservoir with new or clean,
filtered fluid until it reaches the top of the reservoir sight
glass (R).
Service
Pressure Relief Procedure
1. Turn off power supply to the lubricator.
2. Open any drain valves in the system.
3. Leave the drain valve open until you are ready to
pressurize the system.
4. If you suspect that the pressure is not fully relieved
after following the previous steps, using a rag to
cover the hose end coupling or a fitting on the fluid
line then slowly loosen the coupling or fitting and
allow the pressure to be relieved gradually. Then
loosen the part completely.
Cleaning
Clean lubricator periodically to eliminate contamination
that may have occurred in the fluid.
1. Stop lubricator. Follow the Pressure Relief Proce-
dure before performing any service procedures.
2. Remove all pumping units.
FIG. 3
FIG. 4
M
N
R
I
Fluid under pressure can be injected through the skin
and cause serious injury. To reduce the risk of injury
from injection, splashing fluid or moving parts, follow
the Pressure Relief Procedure whenever you:
• are instructed to relieve the pressure,
• check, clean or service any system equipment,

Service
83A2099D
a. Remove the discharge line connection and the
pump mounting screws (D) (FIG. 5).
b. Loosen the adjacent pump mounting screws
(D).
c. Lift out front end of pump (end with feed regula-
tor screw), pulling it forward and upward at the
same time. This will allow the yoke or crosshead
to clear the drive shaft and the pump can be
lifted out (FIG. 6).
3. Clean pumps and reservoir by dipping and brushing
in a cleaning solvent.
4. Clean all lubricant tubing and check valves thor-
oughly.
Reassembly
1. Before replacing pump, position yoke down as far as
possible (FIG. 7).
2. Install pump by inserting the back end of the pump
(end without the feed regulator screw) in the reser-
voir first (FIG. 8).
3. Connect discharge line to pump outlet.
4. Install pump mounting screws (D) and using a
wrench, tighten screws securely.
5. Fill reservoir (page 7) and bleed lubrication lines at
terminal check valve to assure full lubrication before
putting equipment back into operation.
FIG. 5
FIG. 6
D
FIG. 7
FIG. 8

Troubleshooting
3A2099D 9
Troubleshooting
I
Problem Cause Solution
Pump sight well fills and
overflows into adjacent
sight wells
Dirty or inoperative pump
discharge valves
1. Flush discharge check valves.
a. Turn feed regulator to full open.
b. Operate hand crank rapidly.
2. Remove discharge check valves if condition still exists.
a. Shut down unit or turn feed regulator to full closed.
b. Remove discharge line connections.
c. Remove outlet connection from pump unit.
d. Remove check valve. Clean and reseat, if neces-
sary, (care must be exercised to prevent marking
the bottom surfaces when reseating) or replace as
conditions require.
e. Check top and bottom surfaces of the check valve.
These must be free from radial nicks and
scratches, as these surfaces seal against the dis-
charge pressure. Any leakage around the threads
of the outlet connection can be traced back to a
dirty or marked check valve cage, outlet connector,
or cylinder sealing surfaces.
f. Install check valve in pump housing. Make sure the
ball and spring side of the cage faces up.
g. Replace outlet connection.
h. Replace discharge line connection and put pump
back in operation.
Erratic performance Pump cannot bring air
into sight chamber
through gasket due to
contamination with dirt or
paint
Make sure sight glass is open to atmospheric pressure
through the felt gasket between the glass and reservoir.
Gauge glass leakage SIght glass and/or gasket
is damaged
Drain lubricator. Check for leaks. Replace sight glass
and/or gasket.

Parts
10 3A2099D
Parts
Replacement Danger and Warning labels, tags, and
cards are available at no cost.
10
9
8
11
12
13
17
19
18
20
23
31
69
22 21
24
16
Top View
27
916 18/19
Pump (7)
Ref Part No. Description Qty
7 562949 PUMP, assembly, 0.187 diameter M25 1
562950 PUMP, assembly, 0.312 diameter M25 1
8 SCREW, 1/4-20X.75 hex 2
9 SCREWS (1-4 pumps) 12
SCREWS (5-8 pumps) 20
SCREWS (9-12 pumps) 30
SCREWS (13-16 pumps) 38
SCREWS (17-20 pumps) 48
10 557171 COVER, oil, hole 1
11 557149 STRAINER, filter 1
12 PLUG, dry seal, 1/4 nptf 1
13 563923 KIT, sight glass with gasket and nuts 1
16 556690 SIGHTGLASS (4 feed) (1-4 pumps) 1
556694 SIGHTGLASS (8 feed) (5-8 pumps) 1
556692 SIGHT GLASS (6 feed) (9-12 pumps) 2
556694 SIGHT GLASS (8 feed) (13-16 pumps) 2
556692 SIGHT GLASS (6 feed) (17-20 pumps) 2
556694 SIGHT GLASS (8 feed) (17-20 pumps) 1
17 556723 GASKET, sight, 4 FD (1-4 pumps) 1
556725 GASKET, sight, 8 FD (5-8 pumps) 1
556724 GASKET, sight, 6 FD (9-12 pumps) 2
556725 GASKET, sight, 8 FD (13-16 pumps) 2
556724 GASKET, sight, 6 FD (17-20 pumps) 2
556725 GASKET, sight, 8 FD (17-20 pumps) 1
18 555744 WASHER (1-4 pumps) 2
WASHER (5-8 pumps) 2
WASHER (9-12 pumps) 4
WASHER (13-16 pumps) 4
WASHER (17-20 pumps) 6
19 SCREW, #10-32 x 1.50 (1-4 pumps) 2
SCREW, #10-32 x 1.50 (5-8 pumps) 2
SCREW, #10-32 x 1.50 (9-12 pumps) 4
SCREW, #10-32 x 1.50(13-16 pumps) 4
SCREW, #10-32 x 1.50(17-20 pumps) 6
20 557035 PLATE, sight glass 2
21a RIGHT SIDE direct drive rotary 1
21b LEFT SIDE direct drive rotary 1
22 LABEL, name, serial number 1
23 LABEL, oil regulating 1
24 LABEL, identification 1
27 557037 PLATE, sight glass (1-4 pumps) 0
PLATE, sight glass (5-8 pumps) 0
PLATE, sight glass (9-12 pumps) 1
PLATE, sight glass (13-16 pumps) 1
PLATE, sight glass (17-20 pumps) 2
31 557036 PLATE, blank - For quantities, see page
11
-
6916G243 LABEL, safety warning 1
Ref Part No. Description Qty