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307–871

Rev. F

Supersedes D

and PCN E

5:1 Ratio Bulldog

 Pump

500 psi (35 bar, 3.5 MPa) Maximum Working Pressure

100 psi (7 bar, 700 KPa) Maximum Air Input Pressure

Model 221–104, Series A

With a Severe-Duty Displacement Pump*

*  Severe–Duty Displacement Pumps have an abrasion
and corrosion-resistant  displacement rod and sleeve. 
Refer to the Technical Data in the separate displacement
pump manual 308–043 for wetted parts information.

INSTRUCTIONS-PARTS LIST

INSTRUCTIONS

This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.

GRACO INC.

P.O. BOX 1441

MINNEAPOLIS, MN

55440–1441

COPYRIGHT 1988, GRACO INC.

Graco Inc. is registered to I.S. EN ISO 9001

Summary of Contents for Bulldog 221-104

Page 1: ...isplacement Pumps have an abrasion and corrosion resistant displacement rod and sleeve Refer to the Technical Data in the separate displacement pump manual 308 043 for wetted parts information INSTRUC...

Page 2: ...t sure call your Graco distributor D Do not alter or modify this equipment Use only genuine Graco parts and accessories D Check equipment daily Repair or replace worn or damaged parts immediately D Do...

Page 3: ...extinguish all open flames or pilot lights in the spray area Do not smoke in the spray area Do not turn on or off any light switch in the spray area while operating or if fumes are present Do not oper...

Page 4: ...properly grounded fluid hose and pump 5 Object being sprayed follow your local code 6 Fluid supply container follow your local code 7 All solvent pails used when flushing or relieving pressure always...

Page 5: ...e adjusting or repairing the pump The Fluid Drain Valve helps relieve fluid pressure in the displacement pump hose and gun dispensing valve when shutting off the pump Triggering the gun dispensing val...

Page 6: ...very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually Clear the tip or hose obstruction Check Valve Adjustment The fluid piston and intake valve are facto...

Page 7: ...pump overnight If you are pumping water base fluid flush with water first then with a rust inhibitor such as mineral spirits Relieve the pressure but leave the rust inhibitor in the pump to protect th...

Page 8: ...ressure the pump will not oper ate below 30 psi 2 1 bar 210 KPa air pressure Fluid hose or gun is clogged Clean the hose or gun flush frequently Fluid is too heavy for the pump to prime Use an inducto...

Page 9: ...s out of the air motor as the pump is detached Reassembly See page 10 1 If removed screw the three tie rods 6 into the motor 11 2 If removed screw the bushing 59 into the outlet of the displacement pu...

Page 10: ...insert 3 4 101 936 NUT hex jam 3 4 10 1 5 158 674 O RING nitrile ribber 1 6 161 541 ROD tie 13 5 343 mm long 3 7 161 543 COUPLING connecting rod 1 8 161 544 NUT coupling 1 9 164 444 ROD connecting 7...

Page 11: ...si 35 bar 3 5 MPa at a maximum 100 psi 7 bar 700 KPa air input Air consumption 5 3 CFM 0 15 m at 1 gallon 3 78 l at 100 psi 7 bar 700 KPa air input Cycles per gallon liter 3 3 0 87 Maximum recommended...

Page 12: ...ll be as set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or prop erty or any other i...

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