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Operating Instruction
DP-6840iB Airless Paint Sprayer
DP-6840iL
1.8 hp 3.5L
DP-6840iB
Low cart
1.8 hp 3.5L
Stand-up cart
Please read and keep this manual, Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instruction for future reference..
www.dpairless.com
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Summary of Contents for Airless DP-6840iB
- Page 1 Operating Instruction DP-6840iB Airless Paint Sprayer DP-6840iL 1.8 hp 3.5L DP-6840iB Low cart 1.8 hp 3.5L Stand-up cart Please read and keep this manual, Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage! Retain instruction for future reference..
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Page 2: Table Of Contents
— sparks, hot wires and hot surfaces, etc. 5. Attention! Danger of injury by injection! Never point the airless spray gun at yourself or anyone else. Never put your fingers or hands into the spray jet. The very high spraying pressures can cause very serious injuries. -
Page 3: Earthing Instructions
17. Positioning when the ground is uneven. PREVENTION: • This high pressure airless pump is designed to be used The front of the unit must point downward so that the machine does not slip away. with manufacturer authorized parts only. When using this... -
Page 4: General Description
NOTE: Incompatible fluids and paint may cause the 3. Attach an airless spray gun to the spray hose. Using two valves to become stuck closed, which would wrenches (one on the gun and one on the hose), tighten require disassembly and cleaning of the securely. -
Page 5: Painting
11. Trigger the gun into the metal waste container until all air and solvent is flushed from the spray hose and paint is flowing freely from the gun. DP-airless Page 5 of 18... -
Page 6: Electronic Pressure Control Indicators
Never trigger the gun unless the tip is in either the spray or the unclog position. Always engage the gun trigger lock before removing, replacing, or pass pass pass pass pass cleaning tip. DP-airless Page 6 of 18... -
Page 7: Practice
1. Follow the “Pressure Relief Procedure” found in the Operation section of this manual. 2. Remove the gun tip and tip guard and clean with a brush using the appropriate solvent. DP-airless Page 7 of 18... -
Page 8: Maintenance
Disconnect the white wire coming from the power cord and the white wire coming from the relay. b. Disconnect the three wires coming from the potentiometer. c. Disconnect the seven wires coming from the indicator lights assembly. DP-airless Page 8 of 18... -
Page 9: Replacing The Transducer
8. Thread the new transducer wire through the mounting Valve plate and up to the electronic control assembly. Groove Pin Handle 9. Thread the new transducer into the filter housing and tighten securely with a wrench. DP-airless Page 9 of 18... -
Page 10: Servicing The Fluid Section
6. Remove, clean, and inspect the the raised lip on the packing Loweroutlet valve facing down. cage and outlet valve DP-airless Page 10 of 18 Housing ball. Replace if they are worn or damaged. 7. Reassemble the valves by reversing the steps above. -
Page 11: Replacing The Filters
Teflon tape before assembly. 33. Replace the return hose into the clamp on the siphon tube. 34. Place the front cover on the gearbox housing and secure in position using the four front cover screws. DP-airless Page 11 of 18... -
Page 12: Troubleshooting
1. The spray tip is worn. 1. Replace the spray tip following the maintain pressure. instructions that came with the airless spray gun. 2. Replace the spray tip with a tip that has a 2. The spray tip is too large. - Page 13 Cause Solution 1. Replace hose with a minimum of 5m (50’) x Excessive surge at the spray 1. Wrong type of airless spray hose. 10mm (1/4”) grounded textile braid airless gun. paint spray hose. 2. Replace the spray tip following the 2.
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Page 14: Parts Listings
Fitting (low rider, not shown) ......1 Fluid section assembly .......1 Lock washer..........2 Siphon tube..........1 Screw............2 Hose clamp..........1 Hose (not shown) ........1 Inlet screen ..........1 Elbow, 90º , return hose Fitting ............1 (low rider, not shown) .........1 DP-airless Page 14 of 18... -
Page 15: Drive Assembly
Connecting pin..........1 Fan shroud..........1 Screw............2 Fan assembly ..........1 Relay............1 Baffle assembly ..........1 Screw............1 Screw............4 Circuit breaker ..........1 Motor shroud w/labels ........1 Wire cover, 7” (not shown) ......1 Mounting plate ..........1 Grommet.............1 Wire assembly (not shown) ......1 DP-airless Page 15 of 18... -
Page 16: Fluid Section Assembly
NOTE: When repacking the fluid section, make sure the raised lip on the bottom of the lower packing is fully outside the packing around the piston rod after insertion of the piston rod. DP-airless Page 16 of 18... -
Page 17: Filter Assembly
Filter, 60 mesh ..........1 Filter spring adapter........1 Core spring ..........1 O-ring, Teflon ..........1 Plug, 3/8” ............1 Filter housing ..........1 PRIME/SPRAY valve assembly....1 Plug, 1/4” ............1 Transducer..........1 Transducer cap...........1 Inner seal ............1 Transducer assembly (includes items 11–13) DP-airless Page 17 of 18... -
Page 18: Prime/Spray Assembly
For light viscosity fluids, smaller orifice tips generally are desired. For heavier viscosity materials, larger orifice tips are preferred. Please refer to the chart below. DP-airless Page 18 of 18...
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