Trane Liquid-Cooled Adaptive Frequency AFDE Installation, Operation And Maintenance Manual page 37

Refrigerant coolant lines connect to the cabinet through
flange fittings located on the rear of the cabinet. A panel
must be removed to provide access to the flange
connections. If you have removed the refrigerant cooling
lines for field disassembly or repairs use the following
steps to re-connect the coolant lines to the cabinet (see
Figure 14).
1. Be sure the flange fittings on the cabinet and the
CenTraVac chiller's tubing are free of dirt, burrs, and
excessive nicks.
2. On both the inlet and outlet connections place a new
flange gasket over the studs on the back side of the
drive.
3. Align the chiller tubing and flanges over the studs on
the drive so that the flanges are straight and parallel.
Place the proper washers and nuts over the studs and
snug them up by hand. Be careful to maintain the
parallel alignment of the flanges.
4. Use a socket and torque wrench to further tighten the
flange bolts to their proper torques. Tighten the flange
bolts in small equal steps to ensure an equal draw-
down of the flange onto the gasket.
Flange Bolt Torques:
1/2-in. bolts = 70 ft·lb (94.9 N·m)
5/16-in. bolts = 17 ft·lb (23.0 N·m)
5. Inspect the connections for leaks.
AFDE-SVU02F-EN
Liquid-Cooling Connections
37