Graco Check-Mate 800 User manual

334127D
EN
Instructions-Parts
Check-Mate®800
Displacement Pump
For use with hot-melt applications. For professional use only.
5850 psi (40 MPa, 403 bar) Maximum Fluid Working Pressure
400° F (204° C) Maximum Operating Temperature
See page 2 for model information.
Important Safety Instructions
Read all warnings and instructions in this
manual and in all related manuals. Save all
instructions.
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Models
2334127D
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Component Identification . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect to a Graco Air Motor . . . . . . . . . . . . . . . 7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 8
Pump Startup, Adjustment, and Shutdown
Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Disconnect the Pump . . . . . . . . . . . . . . . . . . . . . 9
Replace the Throat Packings . . . . . . . . . . . . . . 10
Replace the Priming Piston . . . . . . . . . . . . . . . . 11
Replace the Intake Valve . . . . . . . . . . . . . . . . . . 12
Repair the Piston . . . . . . . . . . . . . . . . . . . . . . . . 14
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Gallon (20 Liter) Pumps . . . . . . . . . . . . . . . . . 16
55 Gallon (200 Liter) Pumps . . . . . . . . . . . . . . . 18
Technical Specifications . . . . . . . . . . . . . . . . . . . . 20
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 22
Models
Related Manuals
Manuals are available at www.graco.com.
Component manuals are in English.
Part No. Drum Size Seal Material
24W152 5 Gallon (20 Liter) Carbon Filled PTFE
24W153 5 Gallon (20 Liter) Glass Filled PTFE
24W150 55 Gallon (200 Liter) Carbon Filled PTFE
24W151 55 Gallon (200 Liter) Glass Filled PTFE
334128 Throat Seal Repair Kit, Instructions-Parts
334131 Bulldog®and Senator®Air Motors Tie Rod Kit, Instructions-Parts
334132 NXT®Air Motor Tie Rod Kit, Instructions-Parts

Warnings
334127D 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 or on warning labels, 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
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
treatment.
• Do not point the 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.
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.

Warnings
4334127D
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or sol-
vent flowing through the equipment can cause static sparking. 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 sparking).
• Ground all equipment in the work area. See Grounding instructions.
• Never spray or flush solvent at high pressure.
• 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.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static 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.
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe
burns:
• Do not touch hot fluid or equipment.
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 com-
ponent. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Specifica-
tions in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete infor-
mation about your material, request Safety Data Sheet (SDS) 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 manu-
facturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make 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.

Warnings
334127D 5
WARNING
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheet (SDS) 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.
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. 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.

Component Identification
6334127D
Component Identification
Key:
A Displacement Pump
B Wetcup
C Throat Packing
D Outlet Housing
E Fluid Outlet
F Bleed Valve
G Cylinder
H Intake Housing
J Intake Cylinder
K Priming Pistion
FIG. 1: Check-Mate 800 Displacement Pump Component Identification
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Installation
334127D 7
Installation
Grounding
Pump: the displacement pump is grounded with a wire
connecting the pump to the control enclosure. Locate
the small hole (W) in the pump outlet housing. Attach
the ground wire (Y) to the pump outlet housing using the
ground screw (X) supplied with your system. Tighten the
ground screw securely. Do not operate the equipment
without the ground wire in place.
Air compressor: follow manufacturer’s recommenda-
tions.
Fluid supply container: follow local code.
Object being dispensed: follow local code.
Connect to a Graco Air Motor
The displacement pump may be installed on Senator,
Bulldog, King®, and NXT air motors using Tie Rod Kits.
See the following kit manuals for installation instruc-
tions.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
FIG. 2: Attach Grounding Wire
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Manual Tie Rod Kit Air Motor
334131 24V752
Bulldog
Senator
King
334132 24V754 NXT

Operation
8334127D
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Lock the gun/valve trigger safety.
2. Close all air bleed valves (required in your system)
to shut off the air supply to the pump.
3. Unlock the gun/valve trigger safety.
4. Hold a metal part of the gun/valve firmly to the side
of a grounded metal pail and trigger the gun/valve to
relieve pressure.
5. Lock the gun/valve trigger safety.
6. Open the pump bleeder valve (required in your sys-
tem), having a container ready to catch the drain-
age.
7. Leave the pump bleeder valve open until you are
ready to spray/dispense again.
If you suspect that the spray tip/nozzle or hose is com-
pletely clogged, or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the tip retaining nut or hose end coupling and
relieve pressure gradually, then loosen completely.
Clear the tip/nozzle or hose.
Pump Startup, Adjustment, and
Shutdown Instructions
These operations depend on the system you are using.
Refer to the instructions for your system.
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 when you stop dispensing and before
cleaning, checking, or servicing the equipment.
Heated fluid can cause severe burns and can cause
equipment surfaces to become very hot. Wear protec-
tive gloves and clothing when operating this equip-
ment in a heated system. Allow the equipment to cool
thoroughly before servicing.

Repair
334127D 9
Repair
NOTE: The numbers and letters in parentheses used in
the Repair section refer to the callouts shown in the Fig-
ures. Also see Parts, beginning on page 16.
Required Tools
• Torque wrench
• Bench vise with soft jaws
• Rubber mallet
•Hammer
• O-ring pick
• 13 mm (1/2 in.) diameter brass rod
• Set of socket wrenches
• Set of adjustable wrenches
•Pipewrench
• Screwdriver
• Heat gun
• Gloves
• Thread lubricant
• Thread sealant
Disconnect the Pump
NOTE: The priming position can be serviced without
disconnecting the displacement pump from the motor.
See Replace the Priming Piston on page 11.
1. Flush the pump, if possible. Stop the pump at the
bottom of its stroke to prevent fluid from drying on
the exposed displacement rod.
2. Relieve the pressure. See Pressure Relieve Pro-
cedure on page 8.
3. Allow the pump to cool if it is being used in a heated
system.
NOTE: It may be necessary to use a heat gun to ease
disassembly of some parts.
4. Disconnect the air and fluid hoses.
5. Disconnect the pump from the heated platen.
6. Disconnect the displacement pump from the motor
as explained in the instructions for the system you
are using.
Heated fluid can cause severe burns and can cause
equipment surfaces to become very hot. Wear protec-
tive gloves and clothing when operating this equip-
ment in a heated system. Allow the equipment to cool
thoroughly before servicing.

Repair
10 334127D
Replace the Throat Packings
The throat packings are available as pre-assembled
kits.
1. Relieve the pressure. See Pressure Relief Proce-
dure on page 8.
2. See Figure 3. Unscrew the packing nut (2) using a
pipe wrench. Remove the o-ring (27) and washer
(26) from the bottom of the packing housing (25) or
from the outlet housing (3).
3. Place the flats of the packing nut (2) in a vise.
Unscrew the packing housing (25) and discard it
and the packings.
4. Remove the washer (24), seal (23), and back up
washer (22) from the packing nut.
5. The throat repair kit is pre-assembled. Screw the kit
into the packing nut (2), making sure that the
backup washer (22), seal (23), and washer (24) are
properly positioned on top of the packing housing
(25) with the lips of the seal facing down. Torque the
packing housing (25) to 225 +/- 10 ft-lb (305 +/- 14
N•m).
6. Before installing the packing housing into the pump,
generously lubricate the seals with the high tem-
perature grease supplied with the repair kit.
7. If necessary, use an arbor press to install the o-ring
(27) in the packing housing (25).
8. Screw the packing nut (2) and packing housing (25)
into the outlet housing (3). Torque to 150 +/- 30 ft-lb
(203 +/- 41 N•m).
Pump Part No. Throat Seal Repair Kit
24W152 24V752
24W153 24V753
24W150 24V752
24W151 24V753
FIG. 3: Replace Throat Packings
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Torque to 225 +/- 10 ft-lbs (305 +/- 147 N•m).
Torque to 150 +/- 30 ft-lbs (203 +/- 41 N•m).
Lips of the u-cup packing must face down.
1
2
3