Install Restrictors or Plugs
Two 0.024 in. restrictors are installed with the gun. An extra 0.032 in. restrictor is included with the gun. If nec- essary, use this restrictor to balance the pressures. Optional restrictors in various sizes are also available. Restrictors create back pressure and make up for vis- cosity differences between A (ISO) and B (RES). See pressure drop chart in FIG. 2 on page 15 and see the Volume Balancing section. See 249765 Restrictor Kit on page 14.
1.Perform Pressure Relief Procedure, page 10.
2.Remove restrictors (E).
3.If using one or more restrictors, assemble
4.If using one or more plugs (see Accessories on page 14), assemble
5.Screw assembled restrictors or plugs into outlet manifold (F).
NOTICE
Restrictors and plugs can be damaged if they are overtightened. Torque to
Volume Balancing
Ratio errors can occur between the proportioner and the manifold, even if the proportioner output ratio is very accurate.
Different restrictor sizes are available to correct imbal- ances. See FIG. 2 on page 15 for available sizes.
Check Valve Imbalance
If resin and hardener are at or near 1:1 ratio, when one check valve opens, the resulting surge closes the other. This check valve oscillation causes ratio imbalance.
Install restrictors on both sides to meter a smooth flow to the manifold.
Maintenance
Sizing Restrictors
If resin and hardener are at or near 1:1 ratio and viscos- ities are similar, add a few hundred psi pressure drop to each side to prevent check valve oscillation. Use the chart in FIG. 2 on page 15, or use a restrictor about twice the size of your spray tip, on both sides.
Maintenance
Routine Cleaning
Restrictor Screens
Soak the restrictor screens in solvent regularly to clean. If soaking is ineffective, replace restrictor screens.
Restrictors
Soak the restrictors in solvent and use the included vise (30) and drill bit (31) to clean the orifice.
Check Valves
Soak the check valves in solvent. Use a small screw driver to actuate the check valve ball and spring to remove any restriction. Ensure fluid flows freely through the check valve before
Outlet Manifold
Use drill bits to clean the outlet manifold (F) regularly. See the following drill bit size table.
Item | Drill Bit Size |
Outlet manifold fluid outlet . . . . . 1/4 in. (6 mm)
Outlet manifold inner passage . . 1/8 in. (3 mm)
(Restrictor size) 0.018 in. . . . . . . #77 (0.45 mm)
0.024 in. . . . . . . . . . . . . . . . . . . . #73 (0.61 mm); included
0.032 in. . . . . . . . . . . . . . . . . . . . #67 (0.81 mm)
0.040 in. . . . . . . . . . . . . . . . . . . . #60 (1.01 mm)
0.062 in. . . . . . . . . . . . . . . . . . . . 1/16 in. (1.59 mm)
0.094 in. . . . . . . . . . . . . . . . . . . . 3/32 in. (2.38 mm)
Drill bit pin vise . . . . . . . . . . . . . . 117661; included
332198C | 11 |
