Instructions-Parts List
3:1 Ratio Bulldog
®
Transfer Pump
- For use in lubrication applications only -
Model: 205028
With inductor, guide bars and release bar
Model: 205148, Series E
Without inductor, guide bars and release bar
300 psi (2.1 MPa, 21 bar) Maximum Working Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
306642F
Use with lubrication applications only! This pump is
designed to be used for pumping non-corrosive and
non-abrasive lubricants and greases only. Any other use of
the pump can cause unsafe operating conditions and result
in component rupture, fire or explosion, which can cause
serious bodily injury.
Priming Piston Hazard
This pump has a priming piston which extends below the
foot valve during operation. This piston could pinch or
amputate your fingers or hands as it moves up, into the cylinder. To reduce the risk of injury, keep your fingers and
hands and all tools away from the priming piston during
operation and whenever the air and fluid pressure in the
pump is not fully relieved.
ti10550a
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 1958, Graco Inc. is registered to I.S. EN ISO 9001
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 risk. Refer back to these warnings. Additional, product-specific warnings may be found 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.
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 forms from distributor or retailer.
• 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.
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power at main switch before disconnecting any cables and before servicing
equipment.
• Connect only to grounded power source.
• All electrical wiring must be done by a qualified electrician and comply with all local codes and
regulations.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
MOVING PARTS HAZARD
Moving parts can pinch 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 in this manual. Disconnect power or air supply.
2 306642F
Installation
Grounding
In a low pressure air spray system, static sparking is
generally not a problem; however some simple precautions should be taken to reduce the risk. Check your
local code for detailed grounding instructions for your
area and type of equipment. Ground all equipment.
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.
Installation
(c)
(a)
(b)
• Pump: (F
plied). Loosen grounding lug locknut (a) and washer
(b). Insert one end of ground wire (c) into the slot in
the lug (d). Tighten locknut securely. Connect other
end of wire to a true earth ground.
IG. 1) Use ground wire and clamp (sup-
(d)
F
IG. 1
• Air Compressor: according to manufacturer’s recommendations.
• Object being sprayed: according to local code.
• Fluid supply container: according to local code.
• All solvent pails used when flushing: according to
local code.
Only use conductive, metal pails. Do not place the
pail on a non-conductive surface such as paper or
cardboard, which interrupts the grounding continuity.
• To maintain grounding continuity when flushing or
relieving pressure, always hold metal part of the dispenser firmly to the side of a grounded metal pail,
then squeeze trigger.
306642F 3
Installation
Air and Transfer Lines (FIG. 2)
The typical installation shown in FIG. 2 is only provided as a guide for selecting and installing required and optional
accessories. Be sure all air and fluid accessories are properly sized for your system and are compatible with the fluid
you are pumping. Contact your Graco representative for assistance in designing a transfer system to suit your specific needs.
Air inlet
3/4 npsm(f)
swivel
F
2” npt
outlet
ti0551a
F
IG. 2
• 3/4 in. ID Air Supply Line
• 3/4 npt(f) Air Inlet Swivel
C
E
D
B
A
Key:
A Air Line Filter
B Air Regulator
C Air Runaway Valve
D Air Line Oiler
E Bleed-type Master Air Valve
F Outlet Hose
• Install Transfer Hose (F) to the 2 in. npt(f) pump
outlet and tighten securely.
• On the Air Supply Line install:
• Air Filter (A) to remove harmful dirt and mois-
ture from the compressed air supply
• Air Regulator (B) to control pump speed
• Air Runaway Valve (C) to stop the pump auto-
matically if the supply container is empty.
• Air Line Oiler (D) for automatic air motor lubri-
cation
• Bleed-type master air valve (E): required in your
system to relieve air trapped between it and the air
motor when the valve is closed.
Never operate this pump with the bleed-type master air
valve (E) (supplied with the air motor) removed. When
closed, this valve relieves air trapped between it and
the air motor. Trapped air can cause the pump to cycle
unexpectedly and cause serious bodily injury from
moving parts.
For air requirements and additional Technical Data
see page 10.
Install the Pump
1. Remove cover from a full, open head drum of lubricant.
2. To help eliminate air pockets, which is essential for
good priming, smooth surface of the lubricant with a
straight edge until it is level.
3. Lift pump from the inductor plate and wipe bottom of
plate clean.
4. Press inductor plate down onto the lubricant. Rock
plate back and forth to firmly seat it and to exhaust
air trapped under the plate. Continue with this
motion until some lubricant is forced up into the
neck of the inductor plate.
5. Place pump on the inductor plate.
4 306642F