5
INSTALLATION
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and
the parts drawing.
See page 14 for accessories available from
Graco. If you supply your own accessories, be
sure they are adequately sized and
pressure-rated to meet the system’s
requirements.
The Typical Installation shown on page 4 is only a guide
for selecting and installing system components and ac-
cessories. Contact your Graco representative for assis-
tance in designing a system to suit your particular needs.
ASSEMBLING THE PUMP
The major components of this pump are packed in sepa-
rate containers. They are:
Check-Mate Pump (Part No. varies by Model)
Air Regulation Kit 223-815
Pneumatic Elevator Cart 224-137
Cart Accessory Kit 224-376
Wiper Plate 222-909
For Models 231-171 and 231-173 only:
SST Braided Hose (Part No. varies by Model),
Flo-Gun 207–945, and Gun Swivel 207-947.
Assemble the components as explained on page 6.
SYSTEM ACCESSORIES
Refer to the Typical Installation drawing on page 4.
Two accessories are required in your system: a
bleed-type master air valve (J) and a fluid drain
valve (N). These accessories help reduce the risk
of serious bodily injury including fluid injection,
splashing in the eyes or on the skin, and injury from
moving parts if you are adjusting or repairing the
pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the air is shut
off. Trapped air can cause the pump to cycle unex-
pectedly. Locate the valve close to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
WARNING
Air and Fluid Hoses
Be sure all air and fluid hoses are properly sized and
pressure-rated for your system. Use only grounded air
and fluid hoses. Fluid hoses must have a braided stain-
less steel cover (or spring guards on both ends).
Supplied Air Line Components
The following components are supplied with your pump:
The bleed-type master air valve (J) is required in
your system to relieve air trapped between it and the
air motor when the valve is closed (see the WARN-
ING at left). Be sure the bleed valve is easily accessi-
ble from the pump, and is located downstream from
the air regulator.
The air regulator (K) controls pump speed and outlet
pressure by adjusting the air pressure to the pump.
Locate the regulator close to the pump, but upstream
from the bleed-type master air valve.
The air manifold (E) is the air inlet for the pump.
The air line quick disconnect coupler (F) consists
of a female coupler and a male pin fitting. The female
coupler screws onto the end of the air hose (D). The
male fitting is installed at the inlet of the air manifold
(E). A second male fitting is included with the pneu-
matic elevator cart, installed at the cart air inlet.
Air Line Accessories
Install the following accessories in the order shown in the
Typical Installation, using adapters as necessary:
A pump runaway valve (G) senses when the pump
is running too fast and automatically shuts off the air to
the motor. A pump which runs too fast can be serious-
ly damaged. Install closest to the pump air inlet.
An air line lubricator (H) provides automatic air mo-
tor lubrication.
An air line filter (L) removes harmful dirt and mois-
ture from the compressed air supply.
A second bleed-type air valve (M) isolates the air
line accessories for servicing. Locate upstream from
all other air line accessories.
Fluid Line Accessories
Install the following accessories in the positions shown in
the Typical Installation, using adapters as necessary:
A fluid drain valve (N) is required in your system to
relieve fluid pressure in the hose and gun (see the
WARNING at left). Screw the drain valve into the
open branch of a tee mounted in the fluid line. Install
the drain valve pointing down, but so the handle points
up when opened.
A fluid regulator (P) controls fluid pressure to the
gun/valve, and dampens pressure surges.
A gun or valve (S) dispenses the fluid. The gun
shown in the Typical Installation is a dispensing gun
for highly viscous fluids.
A gun swivel (T) allows freer gun movement.
GROUNDING
WARNING
Before operating the pump, ground the system as
explained under FIRE OR EXPLOSION HAZARD
and Grounding on page 3.
