Vertiv Liebert XDU 060, Installer/User Manual

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10.6 Checking and Cleaning the Strainer
The Y-strainer in the XDU will require cleaning after the flush of the initial fill and may require periodic cleaning throughout
the service life. The strainer is located above the pumps in the base of the unit and is accessed through the fan door at the
front of the unit. Schrader connections on either side of the Y-strainer may be used to drain the unit.
Figure 10.2 Y-Strainer Location
NOTE: The XDU must be shut down to remove and clean the Y-strainer. This will stop cooling of the connected load.
Take all necessary steps to prevent damage to the load.
NOTE: The XDU fluid system may be under pressure. Relieve pressure prior to servicing the Y-strainer.
To access and clean Y-strainer:
1. Turn the XDU Off.
2. Disconnect the supply and return lines/hoses from the load.
3. With the free end in a bucket, connect a hose to the Schrader downstream of the strainer to relieve pressure
and drain the fluid from the unit.
4. Remove the plug from the strainer to remove fluid from the strainer.
5. Remove the strainer cap and gently remove the strainer element.
6. Rinse any debris from the strainer element using clean water or fluid.
7. Inspect screen and cover gasket for damage. If either is damaged, replace. Always ensure there is a spare
gasket and screen on hand prior to maintenance.
8. Remove any debris or sludge from within the strainer.
9. Replace cleaned or new screen into its original position, ensuring it is squarely positioned on the screen seat.
10. Replace cover gasket and cap or cover. Tighten cap or cover to specified torque rating.
11. Fill the system as described in Filling the Complete System on page 32.
10 Maintenance
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