Graco Check-Mate 450 Operation manual

308–017
Rev. L
Supersedes E
and PCN K
Model 222–768 Shown
0423
INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
CARBON STEEL
Check-Mate 450 Pumps
WITH PRIMING PIST ON, AND
SEVERE-DUTY ROD AND CYLINDER
For Pump Model Nos., Ratios, and Working Pressures,
refer to page 2.
U.S. Patent Nos. 5,147,188 and 5,154,532.
Table of Contents
List of Models 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service
Troubleshooting 12
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Tools 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting the Displacement Pump 14. . . . . . . .
Reconnecting the Displacement Pump 15. . . . . . . .
Displacement Pump Service 16. . . . . . . . . . . . . . . . .
Parts 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data and Performance Charts 32. . . . . . . . .
Dimensions 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 39. . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Toll-Free Graco Phone Numbers 40. . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1990, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001

2 308–017
List of Models
Maximum Air
W orking Pressure
Maximum Fluid
Working
Pressure
Model No. Description bar psi bar psi
222–770 10:1 ratio Monark  Pump, Series A
(UHMWPE/  Packed)
12.5 180 125 1800
235–626 10:1 ratio Monark  Pump, Series A
( Packed)
12.5 180 125 1800
222–768 20:1 ratio President  Pump, Series A
(UHMWPE/  Packed)
12.5 180 250 3600
237–207 20:1 ratio stubby President  Pump,
Series A (UHMWPE/  Packed)
12.5 180 250 3600
222–769 34:1 ratio Senator  Pump, Series A
(UHMWPE/  Packed)
8.3 120 281 4080
224–660 34:1 ratio Quiet Senator  Pump,
Series A (UHMWPE/  Packed)
8.3 120 281 4080
237–492 34:1 ratio stubby Senator  Pump,
Series A (UHMWPE/  Packed)
8.3 120 281 4080
237–780 34:1 ratio stubby Quiet Senator 
Pump, Series A
(UHMWPE/  Packed)
8.3 120 281 4080
222–778 55:1 ratio Bulldog  Pump, Series A
(UHMWPE/  Packed)
6.3 90 347 4950
222–813 55:1 ratio Quiet Bulldog  Pump,
Series A (UHMWPE/  Packed)
6.3 90 347 4950
237–208 55:1 ratio stubby Bulldog  Pump,
Series A (UHMWPE/  Packed)
6.3 90 347 4950
237–779 55:1 ratio stubby Quiet Bulldog 
Pump, Series A
(UHMWPE/  Packed)
6.3 90 347 4950
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE

308–017 3
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
WARNING
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury .
D
This equipment is for professional use only .
D
Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor .
D
Do not alter or modify this equipment.
D Check equipment daily . Repair or replace worn or damaged parts immediately .
D Do not exceed the maximum working pressure stated on the equipment or in the T echnical Data
for your equipment. Do not exceed the maximum working pressure of the lowest rated component
in your system.
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer ’ s warnings.
D Do not use hoses to pull equipment.
D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82 _ C (180 _ F) or below –40 _ C (–40 _F).
DW
ear hearing protection when operating this equipment.
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.

4 308–017
WARNING
INJECTION HAZARD
Spray from the spray gun/dispense valve, leaks or ruptured components can inject fluid into your body
and cause extremely serious injury , including the need for amputation. Fluid splashed in the eyes or on
the skin can also cause serious injury .

Fluid injected into the skin might look like just a cut, but it is a serious injury . Get immediate medi -
cal attention.

Do not point the gun/valve at anyone or at any part of the body .
 Do not put your hand or fingers over the spray tip/nozzle.
 Do not stop or deflect leaks with your hand, body , glove or rag.
 Do not “blow back” fluid; this is not an air spray system.
 Always have the tip guard and the trigger guard on the gun when spraying.
 Check the gun dif fuser operation weekly . Refer to the gun manual.
 Be sure the gun/valve trigger safety operates before spraying.
 Lock the gun/valve trigger safety when you stop spraying.
 Follow the Pressure Relief Procedure on page 9 if the spray tip/nozzle clogs and before clean -
ing, checking or servicing the equipment.
T ighten all fluid connections before operating the equipment.
 Check the hoses, tubes, and couplings daily . Replace worn or damaged parts immediately . Do not
repair high pressure couplings; you must replace the entire hose.
 Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by
kinks or bends near the couplings.
MOVING P ARTS HAZARD
Moving parts, such as the priming piston, can pinch or amputate your fingers.
 Keep clear of all moving parts when starting or operating the pump.
 Keep hands and fingers away from the priming piston during operation and whenever the pump is
charged with air
.

Before servicing the equipment, follow the Pressure Relief Procedure on page 9 to prevent the
equipment from starting unexpectedly.

308–017 5
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re -
sult in a fire or explosion and serious injury .
 Ground the equipment and the object being sprayed. Refer to Grounding on page 8.
 If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing/dispensing immediately . Do not use the equipment until you identify and correct the problem.
 Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid be -
ing sprayed/dispensed.
 Keep the spray/dispense area free of debris, including solvent, rags, and gasoline.
 Electrically disconnect all equipment in the spray/dispense area.
 Extinguish all open flames or pilot lights in the spray/dispense area.
 Do not smoke in the spray/dispense area.
 Do not turn on or of f any light switch in the spray/dispense area while operating or if fumes are
present.
 Do not operate a gasoline engine in the spray/dispense area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
 Know the specific hazards of the fluid you are using.
 Store hazardous fluid in an approved container . Dispose of hazardous fluid according to all local,
state and national guidelines.
 Always wear protective eyewear , gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer .