4.6 COOLANT (Continued)
After the unit is drained and a new coolant filter element is installed, refill the system with fresh coolant. Bring the receiver level of coolant up to the midpoint of the sight glass. Replace the fill cap. Start the compressor and run it for a short time. The correct coolant level is at the midpoint of the sight glass with the unit running in the ‘UNLOADED” mode.
4.7SEPARATOR TANK SCAVENGE SCREEN/ORIFICE
TOOLS REQUIRED
■Open end wrench
■Pliers
PROCEDURE
The screen/orifice assemblies are similar in appearance to a straight tubing connector and will be located between two pieces of 1/4 inch O.D. scavenge line tubing.
The main body is made from 1/2 inch hexagon shaped steel and the diameter of the orifice and a
A removable screen and orifice is located in the exit end of the assembly (See Figure
To remove the screen/orifice, disconnect the scavenge line tubing from each end. Hold the center section firmly and use a pair of pliers to gently grasp the exit end of the assembly that seals against the scavenge line tubing. Pull the end out of the center section while using care to prevent damage to the screen or sealing surfaces.
Clean and inspect all parts prior to reinstallation.
When the assembly is installed, confirm the direction of flow to be correct. Observe the small arrow stamped in the center section and ensure the direction flow to be from the separator tank to the airend.
FIGURE 4.7-1 SEPARATOR TANK SCAVENGE
SCREEN/ORIFICE
32
