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Instructions – Parts List
ACETAL, POLYPROPYLENE, AND PVDF
Husky1040 Air-Operated
Diaphragm Pumps
308443Z
Acetal Model Shown
120 psi (0.8 MPa, 8 bar) Maximum Fluid Working Pressure
120 psi (0.8 MPa, 8 bar) Maximum Air Input Pressure
*Model No. D71 Acetal Pumps ( certified)
*Model No. D81 Acetal Pumps, Remote ( certified)
*Model No. D72 Polypropylene Pumps
*Model No. D82 Polypropylene Pumps, Remote
*Model No. D75 PVDF Pumps
*Model No. D85
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Table of Contents Symbols Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Warning Symbol Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 WARNING Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Service This symbol alerts you to
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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. Know the specific hazards of the fluid you are using. Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national guidelines. Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and solvent manufacturer. Pipe and dispose of the exhaust air
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Installation General Information Tightening Screws Before First Use The Typical Installation shown in Fig. 2 is only a Before using the pump for the first time, check and guide for selecting and installing system compo- retorque all external fasteners. See Torque Se- nents. Contact your Graco distributor for assistance quence, page 30. After the first day of operation, in planning a system to suit your needs. retorque the fasteners. Although pump use varies, a general guideline is to retorq
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Installation Grounding WARNING Ground all of this equipment: FIRE AND EXPLOSION HAZARD Pump: Connect a ground wire and clamp as shown This pump must be grounded. Before in Fig. 1. Loosen the grounding screw (W). Insert operating the pump, ground the system one end of a 12 ga (1.5 mm) minimum ground wire as explained below. Also read the sec- (Y) behind the grounding screw and tighten the tion FIRE AND EXPLOSION HAZARD screw securely. Connect the clamp end of the on page 3. ground wire to a t
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Installation Air Line b. Locate one bleed-type master air valve (B) WARNING close to the pump and use it to relieve trapped air. See the WARNING at left. Locate the other A bleed-type master air valve (B) is required in master air valve (E) upstream from all air line your system to relieve air trapped between this accessories and use it to isolate them during valve and the pump. Trapped air can cause the cleaning and repair. pump to cycle unexpectedly, which could result in serious injury, inclu
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Installation Mountings Fluid Suction Line If using a conductive (Acetal) pump, use conductive hoses (G). If using a non-conductive (polypropy- CAUTION lene or PVDF) pump, ground the fluid system. See The pump exhaust air may contain contaminants. Grounding on page 5. Ventilate to a remote area if the contaminants could affect your fluid supply. See Air Exhaust The pump fluid inlet (R) is a 1” raised face flange. Ventilation on page 10. See Flange Connections on page 8. If the fluid inlet
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Installation Flange Connections The fluid inlet and outlet ports are 1” raised face 1. Place a lockwasher and a flat washer on each bolt. flanges. Connect 1” flanged plastic pipe to the pump Refer to Fig. 3. as follows. You will need: Torque wrench 2. Align the holes in the gasket and the pipe flange with the holes in the pump flange. Adjustable wrench One 4.25” diameter, 1/8” thick PTFE gasket, with 3. Lubricate the threads of the four bolts. Install the four 0.62 diameter holes and a 1.1
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Installation Changing the Orientation of the Fluid Inlet Fluid Pressure Relief Valve and Outlet Ports The pump is shipped with the fluid inlet (R) and outlet (S) ports facing the same direction. See Fig. 4. To CAUTION change the orientation of the inlet and/or outlet port: Some systems may require installation of a pres- sure relief valve at the pump outlet to prevent 1. Remove the screws (106 or 112) holding the inlet overpressurization and rupture of the pump or (102) and/or outlet (103) manif
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Installation Air Exhaust Ventilation The air exhaust port is 3/4 npt(f). Do not restrict the air WARNING exhaust port. Excessive exhaust restriction can cause erratic pump operation. FIRE AND EXPLOSION HAZARD Be sure to read FIRE OR EXPLOSION To provide a remote exhaust: HAZARD and TOXIC FLUID HAZARD on page 3, before operating this pump. 1. Remove the muffler (P) from the pump air exhaust Be sure the system is properly ventilated port. for your type of installation. You must vent the exhaust to
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Operation 1. Be sure the pump is properly grounded. Refer to Pressure Relief Procedure Grounding on page 5. WARNING 2. Check all fittings to be sure they are tight. Be sure PRESSURIZED EQUIPMENT HAZARD to use a compatible liquid thread sealant on all The equipment stays pressurized until pressure is male threads. Tighten the fluid inlet and outlet manually relieved. To reduce the risk of serious fittings securely. injury from pressurized fluid, accidental spray from the gun or splashing fluid, f
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Operation NOTE: Leaving air pressure applied to the air motor for Operation of Remote Piloted Pumps extended periods when the pump is not running may shorten the diaphragm life. Using a 3–way solenoid 1. Follow preceding steps 1 through 7 of Starting valve to automatically relieve the pressure on the air and Adjusting Pump. motor when the metering cycle is complete prevents this from occurring. 2. Open air regulator (C). Pump Shutdown WARNING WARNING The pump may cycle once before the external s
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Maintenance Lubrication Tightening Threaded Connections The air valve is designed to operate unlubricated, however if lubrication is desired, every 500 hours of Before each use, check all hoses for wear or damage, operation (or monthly) remove the hose from the pump and replace as necessary. Check to be sure all air inlet and add two drops of machine oil to the air threaded connections are tight and leak-free. Check inlet. fasteners. Tighten or retorque as necessary. Although pump use varies, a
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Troubleshooting 1. 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 2. Check all possible problems and causes before Pressure Relief Procedure on page 11. disassembling the pump. PROBLEM CAUSE SOLUTION Pump cycles at stall or fails to hold Worn check valve balls (301), seats Replace. See page 18. pressure at stall. (201) or o-rings (202). Pump will not cycle, or cycles
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Troubleshooting PROBLEM CAUSE SOLUTION Fluid in exhaust air. Diaphragm ruptured. Replace. See pages 19 to 21. Loose fluid side plate (105). Tighten or replace (pages 19 to 21). Pump exhausts excessive air at Worn air valve block (7), o-ring (6), Repair or replace. See pages stall. plate (8), pilot block (18), u-cups 16 to 17. (10), or pilot pin o-rings (17). Worn shaft seals (402). Replace. See pages 19 to 21. Pump leaks air externally. Air valve cover (2) or air valve cover Tighten screws. See
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Service 7. Clean all parts and inspect for wear or damage. Repairing the Air Valve Replace as needed. Reassemble as explained on Tools Required page 17. Torque wrench Torx (T20) screwdriver or 7 mm (9/32”) socket 2 3 wrench 2 Needle-nose pliers 4 O-ring pick Lithium base grease NOTE: Air Valve Repair Kits 236273 (aluminum center housing models) and 255061 (sst center housing models) are available. Refer to page 26. Parts included in the kit are marked with a symbol, for example (4)
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Service Reassembly 1 Insert narrow end first. 1. If you removed the bearings (12, 15), install new 2 Grease. ones as explained on page 22. Reassemble the 3 fluid section. Install with lips facing narrow end of piston (11). 4 Insert wide end first. 2. On aluminum center housing models, install the valve plate seal (9) into the groove at the bottom 10 2 3 of the valve cavity. The rounded side of the seal must face down into the groove. See Fig. 10. 4 11 3. Install the valve plate (8) in the c
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Service Reassembly Ball Check Valve Repair 1. Clean all parts and inspect for wear or damage. Tools Required Replace parts as needed. Torque wrench 2. Reassemble in the reverse order, following all notes in Fig. 11. Assemble the ball checks exactly 10 mm socket wrench as shown. The arrows (A) on the fluid covers (101) must point toward the outlet manifold (103). O-ring pick Torque to 80 to 90 in-lb (9 to 10 N-m). See Torque Se- 1 Disassembly quence, page 30. 2 Arrow (A) must point toward o
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Service Disassembly Diaphragm Repair NOTE: A Fluid Section Repair Kit is available. Refer to page 25 to order the correct kit for your pump. Parts Tools Required included in the kit are marked with an asterisk, for example (401*). Use all the parts in the kit for the best Torque wrench results. WARNING 10 mm socket wrench To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the 19 mm open–end wrench Pressure Relief Procedure on page 11. 1. Rel
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Service 4. Unscrew one outer plate (105) from the diaphragm Reassembly shaft (24). Remove one diaphragm (401), and the 1. Grease the shaft u-cup packings (402*) and install inner plate (104). See Fig. 13. them so the lips face out of the housing (1). See Fig. 13. 2. Grease the length and ends of the diaphragm shaft (24), and slide it through the housing (1). NOTE: PTFE models include a PTFE diaphragm (403) in addition to the backup diaphragm (401). 3. Assemble the inner diaphragm plates (104), d
