Emerson XDR user manual Tools Required

Piping

6.7.2Connect a Liebert XDR with One-Shot Couplings to Liebert XD Flex Pipe

NOTICE

Risk of improper reuse of Liebert XD Flex Pipes with one-shot couplings. Can cause refrigerant leaks.

Liebert XD Flex Pipes with one-shot couplings must not be removed from the Liebert XDR unless they are being replaced with Liebert XD Flex Pipes with one-shot couplings. Do not reuse Liebert XD Flex Pipes with one-shot couplings. Reuse may result in refrigerant leaks.

Tools Required

•Two adjustable wrenches with a maximum adjustment size of 2 inches

•One torque wrench, half-inch drive (see Table 2 for sizes)

•Refrigerant oil

1.Check the Liebert XD Flex Pipe for proper length.

2.Remove the protector cap and plug from the connections and carefully wipe the couplings and threaded surfaces clean.

3.Use a small applicator brush saturated with refrigerant oil to lubricate the entire surface of the diaphragm and the O-ring. Refer to Figure 18.

Figure 18 Male coupling on Liebert XD cooling module

Oil Rubber Seal

and Face of Diaphragm

If refrigerant oil is not used, an alternate lubricant for this application is a refrigerant-compatible silicone grease product, such as Dow Corning DC200/60,000 cst.

4.Thread the coupling halves together by hand to ensure that the threads mate properly. Ensure that the Schrader valve is oriented so that it is accessible for service.

Figure 19 Female one-shot coupling Liebert Flex Pipe: Schrader valve location

Schrader Valve

Coupling Size Marking on Lip of Coupling

20