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307851

Installation

Grounding

In a low pressure air spray system, static sparking is
generally not a problem. However, some simple pre-
cautions should be taken to reduce the risk. Check you
local electrical code for detailed grounding instructions
for your area and type of equipment, and be sure to
ground all of this spray/dispensing equipment.

1.

Pump: Air Motor Model 204464 – 
loosen the grounding lug locknut (W) and washer
(X). Insert one end of a 12 ga. (1.5 mm

2

) minimum

ground wire (Y) into the slot in lug (Z) and tighten
the locknut securely. See Fig. 1. Connect the other
end of the wire to a true earth ground.

Air Motor Models 204722 and 223953 – 
use a ground wire and clamp as instructed in your
separate pump manual.

2.

Air compressor: follow manufacturer’s recommen-
dations.

3.

Fluid hoses: use only grounded hoses with a
maximum of 500 ft (150 m) combined hose length
to ensure grounding continuity.

4.

Spray gun or dispensing valve: grounding is ob-
tained through connection to a properly grounded
fluid hose and pump.

5.

Object being sprayed: according to your local
code.

6.

Fluid supply containers: according to your local
code.

7.

All solvent pails used when flushing, according to
your local code. Use only  metal pails, which are
conductive, placed on a grounded surface. Do not
place the pail on a nonconductive surface, such as
paper or cardboard, which interrupts the grounding
continuity.

8.

To maintain grounding continuity when flushing or
relieving pressure
, always hold a metal part of the
spray gun/dispensing valve firmly to the side of a
grounded metal pail, then trigger the gun/valve.

Fig. 1

Y

X

W

Z

Summary of Contents for 204464 B Series

Page 1: ...or Pump Model 204456 Model 204722 Series C For Pump Models 206780 208177 223776 223777 218555 and 218556 Model 223953 Series A For Pump Model 223954 Instructions Parts List 307851K EN Important Safety...

Page 2: ...his equipment Use only genuine Graco parts and accessories D Check equipment daily Repair or replace worn or damaged parts immediately D Do not exceed the maximum working pressure of the lowest rated...

Page 3: ...rocedure on page 5 to prevent the equipment from starting unexpectedly FIRE AND EXPLOSION HAZARD Improper grounding poor ventilation open flames or sparks can cause a hazardous condition and result in...

Page 4: ...rate pump manual 2 Air compressor follow manufacturer s recommen dations 3 Fluid hoses use only grounded hoses with a maximum of 500 ft 150 m combined hose length to ensure grounding continuity 4 Spra...

Page 5: ...your pump has a restrictor valve close it also 2 Close the bleed type master air valve required in your system 3 Hold a metal part of the gun valve firmly to the side of a grounded metal pail and tri...

Page 6: ...om the rod refer to the piston detail in Fig 2 Use a pliers D on the air exhaust plate 15e and a wrench C on the piston rod 14 5 Remove the three capscrews 15a and disas semble the piston 15 Clean all...

Page 7: ...e 15c 15f 15b 15g 15d 15a 220168 AIR VALVE AND PISTON ASSEMBLY 15 13 3 12 4 MOTOR CAP AND CYLINDER 6 14 5 7 2 9 PISTON ROD AND BASE 11 15 A B PISTON DETAIL 15e 6 14 C D 0 032 in 0 8 mm minimum 1 2 App...

Page 8: ...r to the piston detail in Fig 3 Use a pliers D on the air exhaust plate 1e and a wrench C on the piston rod 3 5 Remove the three capscrews 1a and disas semble the piston 1 Clean all parts in a compat...

Page 9: ...2 7 PISTON ROD AND BASE MOTOR CAP AND CYLINDER 1 A B 17 3 5 15 11 21 20 1e 1c 1f 1b 1g 1d 1a 220168 AIR VALVE AND PISTON ASSEMBLY 1 PISTON DETAIL 1e 17 3 C D 0 032 in 0 8 mm minimum 22 1 2 Torque to 1...

Page 10: ...s semble and recharge as explained in the following steps 3 To recharge the gauge remove the six screws 8 from the housing 2a Clean and inspect the diaphragm inside the housing 2a If the housing diaph...

Page 11: ...rubber 1 9 161770 BASE air motor 1 10 16J475 HOUSING connecting rod 1 11 16J720 RING connecting 1 12 162989 GASKET neoprene rubber 1 13 204465 CAP air motor 1 14 24J678 ROD piston 1 Ref No Part No Des...

Page 12: ...12 307851 Parts Model 204464 5 15 11 22 21 1e 1c 1b 1d 23 25 26 20 8 17 16 18 3 12 7 6 14 2c PART OF ITEM 2 2b 2e 2a 2d 2f 1 2 1a 1g 1f 1 2 Torque to 10 14 in lb 1 3 1 6 NSm Apply sealant 1 2...

Page 13: ...T diaphragm vellumoid 1 2d 158293 SCREW calibration 1 2e 157127 GASKET diaphragm vellumoid 1 2f 158293 SCREW calibration 1 3 219091 TUBE displacement 1 Ref No Part No Description Qty 5 204465 CAP air...

Page 14: ...a Maximum Inbound Air Pressure 180 psi 1 25 MPa 12 5 bar Air Inlet Size 1 4 npt f Effective Piston Area 1 6 sq in 10 cm2 Effective Piston Diameter 1 4 in 35 2 mm Stroke Length Models 204464 204722 4 i...

Page 15: ...15 307851 Notes...

Page 16: ...s shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale GRACO MAKES NO WARRANTY AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNES...

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