Vertiv Liebert CRV - 13.8 Condensate-drain and Condensate-pump System Maintenance

Figure 13.5 Differential pressure switch components, 300-mm (12-in.) models
ITEM DESCRIPTION
1 Differential-pressure sampling point
2 Differential-pressure switch
13.8 Condensate-drain and Condensate-pump System Maintenance
13.8.1 Condensate Drain
Check for and clear obstructions in tubing during routine maintenance.
13.8.2 Condensate Pump, Dual-Float
WARNING! Risk of electric shock. Can cause injury or death. Open all local and remote electric
power disconnect switches and verify that power is Off with a voltmeter before working within
the condensate pump electrical connection enclosure. The Liebert iCOM™ does not isolate
power from the unit, even in the “Unit Off” mode. Some internal components require and
receive power even during the “Unit Off” mode of the LiebertiCOM.
To maintain the condensate pump:
1. Disconnect power to the unit using the disconnect switch.
2. Check for and clear obstructions in gravity lines leading to the condensate pump.
3. Remove the sump, clean with a stiff nylon brush and flush with water.
4. Inspect and clear clogs in the discharge check valve and float mechanism.
5. Reassemble and check for leaks.
Vertiv | Liebert CRV Installer/User Guide | 140