Graco 253485 Instructions-Parts List Manual
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Graco 253485 Instructions-Parts List Manual

Aluminum and stainless steel air-operated diaphragm pumps
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Instructions – Parts List
ALUMINUM AND STAINLESS STEEL
Huskyt 1590 Air-Operated
Diaphragm Pumps
120 psi (0.8 MPa, 8 bar) Maximum Fluid Working Pressure
120 psi (0.8 MPa, 8 bar) Maximum Air Input Pressure
*Model No. DB3___
*Model No. DC3___
*Model No. DB4___
*Model No. DC4___
*Model No. DBC___
*Model No. DCC___
*Model No. DBD___
*Model No. DCD___
*Model No. DT4___
*Model No. DU4___
*Model No. DTD___
*Model No. DUD___
*Model No. 253485
*Model No. 232502
* Refer to the Pump Matrix and descriptions on page 22 to
determine the configuration and model number of your pump.
** Plus models include stainless steel center sections.
Patent No.
CN ZL94102643.4
FR 9408894
JA 3517270
US 5,386,452
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Aluminum Pumps
Aluminum Pumps, Remote
Stainless Steel Pumps
Stainless Steel Pumps, Remote
Aluminum BSPT Pumps
Aluminum BSPT Pumps, Remote
Stainless Steel BSPT Pumps
Stainless Steel BSPT Pumps, Remote
Stainless Steel Plus** Pumps
Stainless Steel Plus** Pumps, Remote
Stainless Steel BSPT Plus** Pumps
Stainless Steel BSPT Plus** Pumps, Remote
Aluminum Pump
Private-Label Aluminum Pump
03263B
Model No. DB3777 shown
308441AJ

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Summary of Contents for Graco 253485

  • Page 1 *Model No. DTD___ Stainless Steel BSPT Plus** Pumps *Model No. DUD___ Stainless Steel BSPT Plus** Pumps, Remote *Model No. 253485 Aluminum Pump *Model No. 232502 Private-Label Aluminum Pump * Refer to the Pump Matrix and descriptions on page 22 to determine the configuration and model number of your pump.

  • Page 2: Table Of Contents

    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. Use only genuine Graco parts and accessories.
  • Page 3 WARNING 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. D Know the specific hazards of the fluid you are using. D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national guidelines.

  • Page 4: Installation

    Also, read the sec- D Always use Genuine Graco Parts and Accessories. tion FIRE AND EXPLOSION HAZARD, on page 3. Refer to Product Data Sheet 305646.
  • Page 5 1/8 in. npt threads. WARNING 3. Connect remaining ends of tubes to external air signal, such as Graco’s Cycleflo (P/N 195264) or Cycleflo II (P/N195265) controllers. A bleed-type master air valve (B) is required in your system to relieve air trapped between this valve and the pump.
  • Page 6 Fluid supply Fluid drain valve (required) Fluid shutoff valve Fluid hose 1.5 npt(f) fluid inlet port 1.5 npt(f) fluid outlet port Ground wire (required; see page 4 for installation instructions) Muffler not included on Model No. 253485 03265B Fig. 2 308441...
  • Page 7 Torque to 190–220 in-lb (22–25 NSm). See Torque Sequence, page 28. Install valve between fluid inlet and outlet ports. Connect fluid inlet line here. Connect fluid outlet line here. Muffler not included on Model No. 253485 03263B Aluminum Model Shown 03461B Fig. 4 Fig.
  • Page 8 Bleed-type master air valve (required for pump) Air regulator Air line quick disconnect Master air valve (for accessories) Air line filter Muffler (not included on Model No. 253485) Grounded air exhaust hose Container for remote air exhaust 03267A Fig. 5 308441...

  • Page 9: Operation

    Operation Pressure Relief Procedure NOTE: If the fluid inlet pressure to the pump is more than 25% of the outlet working pressure, the ball check valves will not close fast enough, resulting in inefficient WARNING pump operation. PRESSURIZED EQUIPMENT HAZARD 4.
  • Page 10 Notes 308441...

  • Page 11: Maintenance

    Maintenance Lubrication Flushing and Storage The air valve is designed to operate unlubricated, WARNING however if lubrication is desired, every 500 hours of operation (or monthly) remove the hose from the pump air inlet and add two drops of machine oil to the air To reduce the risk of serious injury whenever you inlet.

  • Page 12: Troubleshooting

    Troubleshooting D Relieve the pressure before checking or servicing WARNING the equipment. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the D Check all possible problems and causes before Pressure Relief Procedure on page 9. disassembling the pump.
  • Page 13 Troubleshooting PROBLEM CAUSE SOLUTION Fluid in exhaust air. Diaphragm ruptured. Replace. See pages 17–19. Loose diaphragm shaft bolt (107). Tighten or replace. See pages 17–19. Damaged o-ring (108). Replace. See pages 17–19. Pump exhausts excessive air at Worn air valve block (7), o-ring (6), Repair or replace.

  • Page 14: Repairing The Air Valve

    To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Muffler not included on Pressure Relief Procedure on page 9. Model No. 253485 Torque to 50–60 in-lb (5.6–6.8 N 1. Relieve the pressure.
  • Page 15 Service Reassembly Insert narrow end first. 1. If you removed the bearings (12, 15), install new Grease. ones as explained on page 20. Reassemble the Install with lips facing fluid section. narrow end of piston (11). Insert wide end first. 2.

  • Page 16: Ball Check Valve Repair

    Service Ball Check Valve Repair Apply medium-strength (blue) LoctiteR or equivalent to the threads. Torque to 120–150 in-lb (14–17 NSm). See Torque Tools Required Sequence, page 28. D Torque wrench Arrow (A) must point toward outlet manifold (103). D 13 mm socket wrench Not used on some models.

  • Page 17: Diaphragm Repair

    Apply medium-strength (blue) LoctiteR or equivalent to the threads. Torque to 190–220 in-lb (22–25 NSm). See Torque Sequence, page 28. Arrow (A) must point toward air valve (B). Muffler not included on Model No. 253485. 03273C Fig. 11 308441...
  • Page 18 Service 4. Loosen but do not remove the diaphragm shaft c. On PTFE models only, install the PTFE dia- bolts (107), using a 15 mm socket wrench (1 in. on phragm (403*). Make certain the side marked stainless steel models) on both bolts. AIR SIDE faces the center housing (1).
  • Page 19 Used on pumps with PTFE diaphragms only. Apply medium-strength (blue) LoctiteR or equiva- lent. Torque to 20 to 25 ft-lb (27 to 34 N-m) at 100 rpm maximum. Recessed side faces diaphragm (401). Muffler not included on Model No. 253485. 03276C Fig. 12 308441...

  • Page 20: Bearing And Air Gasket Removal

    Service Bearing and Air Gasket Removal 7. Use a bearing puller to remove the diaphragm shaft bearings (19), air valve bearings (12) or pilot Tools Required pin bearings (15). Do not remove undamaged D Torque wrench bearings. D 10 mm socket wrench 8.
  • Page 21 Insert bearings tapered end first. Press-fit bearings flush with surface of center housing (1). Apply medium-strength (blue) LoctiteR or equivalent. Torque to 130–150 in-lb (15–17 N Muffler not included on Model No. 253485. 03277 Detail of Air Valve Bearings 03278B Fig.

  • Page 22: Pump Matrix

    Reference #17 is 168518 O–ring, Fluoroelastomer Use 243492 as the Air Valve Repair Kit Model No. 253485 is an aluminum 1590 pump. This pump is the same as Model No. DB3777 except for the label and that 253485 does not include Reference #111 – Muffler.

  • Page 23: Repair Kit Matrix

    Repair Kit Matrix For Husky 1590 Aluminum and Stainless Steel Pumps, Series A Repair Kits may be ordered separately. To repair the air valve, order Part No. 236273 for aluminum center housing models or Part No. 255061 for stainless steel center housing models (see page 24). Parts included in the Air Valve Repair Kit are marked with a symbol in the parts list, for example (3).

  • Page 24: Parts

    Parts Drawing 110Y 301* 402* 201* 202* Aluminum Model Shown Not used on some models. 401* Used on PTFE models only. 108* Used on stainless steel models only. 403* } These parts are unique to remote piloted air motor, DC––––, DT–––– * These parts are included in the Pump Repair Kit, *301 which may be purchased separately.
  • Page 25 Parts Air Motor Parts List (Matrix Column 2) Ref. Ref. Digit Part No. Description Digit Part No. Description 188838 HOUSING, center; Same as B with the following exceptions aluminum 195921 HOUSING, center; 188854 COVER, air valve; remote, aluminum aluminum 195918 COVER, air;...
  • Page 26 110Y 188970 LABEL, warning 110Y 188970 LABEL, warning 102656 MUFFLER 102656 MUFFLER (not used on Model No. 253485) 115645 SCREW; M10 x 1.50; 90 mm (3.54 in.) 115645 SCREW; M10 x 1.50; 90 mm (3.54 in.) 194169 COVER, fluid; sst 194169 COVER, fluid;...
  • Page 27 Parts Seat Parts List (Matrix Column 4) Ball Parts List (Matrix Column 5) Ref. Ref. Digit Part No. Description Digit Part No. Description 301* 112419 BALL; PTFE 201* 189318 SEAT; 316 stainless steel 301* 112423 BALL; acetal 202* 112418 O-RING; PTFE 301* 112420 BALL;...

  • Page 28: Torque Sequence

    Torque Sequence Always follow torque sequence when instructed to torque fasteners. 1. Left/Right Fluid Covers 3. Outlet Manifold Torque bolts to 190–220 in–lb (22–25 NSm). Torque bolts to 120–150 in–lb (14–17 NSm). TOP VIEW SIDE VIEW 2. Inlet Manifold Torque bolts to 120–150 in–lb (14–17 NSm). BOTTOM VIEW 308441...

  • Page 29: Dimensions

    3/4 npt(f) Air Exhaust 6.0 in. (152.5 mm) 268 mm 38 mm 152.5 mm Muffler not included on Model No. 253485. 379.5 mm SST Pumps Alum. Pumps Dim. 16.81 in. (427 mm) 16.25 in. (412.5 mm) 17.75 in. (451 mm) 18.31 in.

  • Page 30: Technical Data

    Technical Data Maximum fluid working pressure ..............120 psi (0.8 MPa, 8 bar) Air pressure operating range...

  • Page 31: Performance Chart

    Performance Chart Example of Finding Pump Air Consumption and Air Pressure at a Specific Fluid Delivery and Discharge Head: To supply 60 gpm (227 liters) fluid flow (horizontal scale) at 40 psi (0.28 MPa, 2.8 bar) discharge head pressure (vertical scale) re- quires approximately 50 scfm (1.40 m /min) air consumption at 70 psi (0.49 MPa, 4.9 bar) inlet air pressure.

  • Page 32: Graco Warranties

    With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of five years from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.

This manual is also suitable for:

Husky 1590232502Db3Dc3Db4Dc4 ... Show all

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