OPERATION
Install the Fluid Nozzle and Air Cap
WARNING
To reduce the risk of serious bodily injury, including splashing in the eyes or on the skin or electric shock, always follow the Pressure Relief Proce- dure on page 9 before installing, or removing the fluid nozzle/air cap assembly.
1.See Instruction Manual 307±803 for air cap con- sumption and fluid nozzle flow rate information. The fluid output and pattern shape depends on the fluid nozzle size, fluid viscosity, and fluid pressure.
2.Remove the old air cap and fluid nozzle as instructed in Clean the Air Cap and Fluid Nozzle, steps 1 through 4.
3.Push the pin housing (83) into the slot (A) on the front of the gun until it bottoms out. See Fig 4.
4.Push the locking pin (84) into the housing (83).
5.Turn the locking pin (84) to the unlocked position, and screw the new fluid nozzle (13) onto the gun. See Fig 5.
6.Turn the locking pin (84) to the locked position to lock the fluid nozzle (13) in place.
7.Carefully install air cap assembly. Avoid bending electrode (12). Tighten the retaining nut so it is snug, allowing the air cap to turn with resistance. If too tight, the spray pattern will be distorted.
Adjust the Spray Pattern
Follow these steps to establish the correct fluid flow and air flow. DO NOT turn the ES ON±OFF lever to ON yet:
1.Adjust the fluid flow for the appropriate flow rate by using the fluid pressure regulator installed in the fluid line. Check the fluid nozzle chart in manual 307±803 for the appropriate flow rate for the air cap. Start with the lowest rate shown and increase it until you get the desired flow rate.
2.For fine adjustment, use the adjusting knob (Z) lo- cated at the rear of the gun. See Fig 2. Turn the knob clockwise to reduce the amount of fluid being sprayed and counterclockwise to increase the amount of fluid being sprayed.
3.Choose the correct size air cap for the type of fluid being sprayed and the pattern desired.
4.Be sure the fan adjusting knob (AA) is closed (turned fully clockwise).
5.Use an air pressure regulator to adjust the degree of atomization. Always use the lowest air pressure pos- sible for the most efficiency.
NOTE: A minimum of 2.8 bar (40 psi) air supply at the gun is required to ensure full voltage from the power supply. The gun may be operated at a lower air pressure/voltage if required, but may lose some electrostatic wrap.
6.First, complete all the checks under the Operating Checklist on page 9. Then turn the ES ON±OFF lever to ON. When spraying, the ES indicator light should glow, indicating the electrostatic charge.
7.Use the fan adjusting knob to change the shape of the spray pattern. Turn the knob counterclockwise for a wide pattern and clockwise for a solid, round pattern. When increasing to a wide, flat pattern, it may be necessary to increase the supply of fluid to the gun to maintain the same amount of coverage over a large area.
NOTE: See the Spray Pattern Troubleshooting Chart on page 13 to correct spray pattern problems.
KEY
ASlot
83Pin Housing
| A | 83 |
|
| |
Fig 4 |
|
|
KEY |
| |
13 Fluid Nozzle | 14 | |
14Air Cap Assembly
84Locking Pin
DETAIL | DETAIL |
|
13
Locked | Unlocked | |
Position | ||
Position | ||
84 | ||
84 | ||
|
Fig 5
1