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Instructions/Parts ® Merkur Spray Packages 3A0732P For low-volume fine finish spray applications. For professional use only. Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. 15:1 Spray Packages 30:1 Spray Packages 100 psi (0.7 MPa, 7.0 bar) Maximum Air Inlet Pressure See page 3 for model information, including maximum fluid working pressure.
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama- tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
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Warnings WARNING WARNING WARNING WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system component.
Installation Installation Prepare the Operator • The spray gun (H) dispenses the fluid. The gun houses the spray tip (not shown), which is available in a wide range of sizes for different spray patterns All persons who operate the equipment must be trained and rates of flow.
Installation Wall Mount Packages 2. Air and fluid hoses: Static electricity may build up when fluids flow through pumps, hoses, and spray- ers. At least one hose must be electrically conduc- 1. Be sure the wall can support the weight of the tive, with a maximum of 500 ft.
Installation Setup 1. See F . 2. Attach one end of fluid hose (K) to pump 4. Attach remaining end of the air hose to air inlet at outlet (or optional inline fluid filter outlet). base of gun (H). 2. Attach other end of fluid hose to gun fluid inlet at 5.
Operation Operation Pressure Relief Procedure Trigger Lock Trapped air can cause the pump to cycle unexpect- edly, which could result in serious injury from skin See F . 3. Always engage gun trigger lock when you injection, splashing or moving parts. stop spraying to prevent gun from being triggered acci- dentally by hand or if dropped or bumped.
Operation 2. See F . 2. Close gun air regulator (E) and pump air Adjust the Atomization regulator (F) by turning knobs counterclockwise reducing pressure to zero. Close bleed-type air valve (D). 3. Connect air line to bleed type air valve. NOTE: Use this procedure with airless and air-assisted 4.
Operation Adjust the Spray Pattern 3. See F . 4. For narrower pattern, turn pattern adjustment valve knob (AA) counterclockwise (out). If pattern is still not narrow enough, increase air pressure to gun slightly or use different size tip. NOTE: Use this procedure with air-assisted spray guns only.
Maintenance Maintenance Tighten Threaded Connections Flush at the lowest pressure possible. Flush with a fluid that is compatible with the fluid you are pumping and with the wetted parts in your system. Check with your Before each use, check all hoses for wear or damage. fluid manufacturer or supplier for recommended flushing Replace as necessary.
Fluid dried on the displacement rod (119). Clean; keep the packing nut wet-cup filled with Graco throat seal liquid (TSL). Pump operates but does not prime. Held open or worn ball check valves or pis- Clear valve; replace packings. See page ton packings.
• Always use Genuine Graco Parts and Accessories, available from your Graco distributor. If you supply 1. Stop the pump. your own accessories, be sure they are adequately sized and pressure rated for your system.
Repair Disassemble the Pump 3. Install the male gland (114‡) in the cylinder (105). Install the throat packings in the following order with the lips facing down: blue UHMWPE (106‡), leather NOTE: Pump Repair Kits are available. See page 31 to (113‡), UHMWPE, leather, UHMWPE.
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Repair 2. Tighten the jam nut (13). Torque to 65-75 ft-lb 4. Push the retaining spring (19) into place to cover the (88-102 N•m). pin. 3. Align the hole in the displacement rod with the hole 5. Fill throat packing nut wet-cup with TSL to prevent in the air motor rod.
Repair Repair Air Valve 311 312 Replace Complete Air Valve 305 1. Stop the pump. Follow Pressure Relief Procedure, page 10. 2. Disconnect the air line to the motor. 3. See F . 14 on page 23. Remove four screws (211). 309†...
Repair Reassemble the Air Valve 7. Install the spring (311). Lubricate and install the air valve cup (312), see F . 11. Align the small 1. See F . 9. Lubricate detent cam (304) and install round magnet with the air inlet. into housing.
Repair Disconnect the Air Motor 1. Stop the pump. 2. Flush the pump, if possible (see page 13). Follow Pressure Relief Procedure, page 10. 3. Disconnect the air hose, fluid hose, and suction hose. 4. See F . 12. Push the safety spring (9) down and hold to access the coupling pin (18).
Repair Repair Air Motor Reassemble the Air Motor NOTE: For easier reassembly, start with the top cover (210) turned over on the workbench and assemble the air motor upside-down. NOTE: Complete Air Motor Replacement Kits are avail- able. Order 24G693 (2.5 in. motor) or 24G694 (3.5 in. 1.
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Repair 5. Lubricate and install the o-ring (202*) on the bottom 10. Install the tie bolts (212) hand tight. cover (201). 11. Install two gaskets (208*) on the manifold (220). 6. Carefully push the threaded end of the rod (218) up Install the manifold (220).
Parts Air Motor Parts Part No. 24G693, 2.5 in. (63.5 mm) Part No. 24G694, 3.5 in. (88.9 mm), shown 204* *230 208* 202* *202 *217 *207 209*† 208* *207 TI16130a 3A0732P...
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Parts Air Motor Parts Part No. 24G693, 2.5 in. (63.5 mm) Part No. 24G694, 3.5 in. (88.9 mm), shown Ref. Description 24G693 24G694 KIT, cover, bottom; includes 202 (qty 1), 24G695 24G696 203, 207, 213 (qty 1), and 217 202* O-RING, cover Not sold separately.
Parts Air Valve Parts 310 †306 307 304 303 311 312 305 †308 302 †309 †308 307 †306 ti16213a 310 3A0732P...
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Parts Air Valve Parts Complete Air Valve Replacement Kit 24A351 To replace the complete air valve, order Air Valve Replacement Kit 24A351. The kit includes items 301-312 below, and items 209 and 211 on page 33. Air Valve Repair Kits Air valve parts are not sold individually.
Parts Air Control Parts Part No. 24H162, Air-Assisted, Wall Mount Part No. 24H163, Air-Assisted, Stand Mount Part of 402 TI16132a Connect tubing (406) between these two fittings. Used on stand mount units only. Part No. 24H164, Airless, Wall Mount Part No. 24H165, Airless, Stand Mount Connect tubing (406) between these two fittings.
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Parts Air Control Parts Part No. 24H162, Air-Assisted, Wall Mount Part No. 24H163, Air-Assisted, Stand Mount Part No. 24H164, Airless, Wall Mount Part No. 24H165, Airless, Stand Mount Ref. Description 24H162 24H163 24H164 24H165 Qty BRACKET, handle 24H105 24H105 24H105 24H105 REGULATOR, air 15T499 15T499 REGULATOR, air...
Package Dimensions Package Dimensions A, inch B, inch Package (mm) (mm) inch (mm) inch (mm) 20.2 (513) Wall Mount 29.0 (737) 17.4 (442) 18.4 (467) Stand Mount 29.0 (737) 17.4 (442) 26.5 (673) Stand Mount with Hopper Front View Top View ti16288a ti16287a Package Weights...
Wall Bracket Mounting Hole Diagram Wall Bracket Mounting Hole Diagram 2 x 0.35 in. (9 mm) 2 x 0.281 (9/32) in. (7 mm). For wall mount only. 4.40 in. (112 mm) 2.69 in. (68 mm) 2 x 0.62 in. (16 mm) 2 x 0.48 in.
With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.