Emerson Liebert XDR - Manual (Page 33)

Piping
27
6.7.6 Disconnect a Liebert XD Flex Pipe from a Liebert XD System
Tools Required
• Two adjustable wrenches with a maximum adjustment size of 2 inches
1. Close the service valve in the supply line.
2. Ensure there is airflow across the coil.
3. Wait two minutes for the refrigerant to flow out of the module.
4. Close the service valve in the return line.
5. Loosen the Liebert XD Flex Pipe coupling from the header port coupling. This requires a wrench.
Refer to Figure 27.
The Liebert XD Flex Pipe coupling must be held stationary while the union nut on the coupling is
being loosened.
6. Disconnect the coupling.
7. Place the protective dust cap on the port.
8. Place the protective plug back on the Liebert XD Flex Pipe.
9. Repeat Steps 5 through 7 for the remaining Liebert XD Flex Pipe.
Figure 29 Piping mains without Liebert XD Flex Pipe
!
CAUTION
Risk of sudden discharge of pressurized refrigerant. Can cause equipment damage or injury.
Do not disconnect threaded refrigerant couplings at the module cabinet end without relieving
system pressure. Reclaim any refrigerant during removal of module from system.
Dust caps attach here