Table of Contents
Advertisement
5.0 INSPECTION AND STARTUP CHECKLIST
5.1
Exterior Inspection
Exterior Inspection Checklist
___ 1. Confirm that the exterior of the unit is undamaged.
___ 2. Confirm that service and ventilation clearances are adequate. (See Figure 3).
5.2
Internal Inspection
A detailed internal inspection should be performed after the unit is in place and before it is
energized to insure trouble-free startup. The same internal inspection should be carried out when
performing preventive maintenance.
WARNING
Risk of electric shock. Can cause injury and death. Verify that all incoming power circuits
are de-energized and locked out before performing the internal inspection.
Gain access to the internal components of the Liebert EXM Distribution Cabinet
removing the external and interior side panels.
5.2.1 Interior Inspection Checklist
___ 1. Inspect all wire and conductor insulation for damage.
___ 2. Check all breaker connections for tightness. Retorque if necessary. Unless otherwise labeled, use the
recommended tightening torque as shown in Table 10.
___ 3. Check all terminal block connections for tightness. Retorque if necessary. Unless otherwise labeled, use the
recommended tightening torque as shown in Table 11.
___ 4. Verify that input phase cables A, B and C are properly connected to the input breaker (standalone units)
with the correct phase rotation. Refer to Figures 4 and 7 for additional details. When the Liebert EXM
Distribution Cabinets are attached, the input power connects to a busbar or transformer.
___ 5. Verify that the input ground cable connects to the internal customer ground busbar.
___ 6. Verify that the internal customer ground busbar is connected to the Liebert EXM Distribution Cabinet
frame.
___ 7. Verify that the output neutral cable is connected to the internal customer ground busbar.
___ 8. Verify that the output ground cable is connected to the internal customer ground busbar.
___ 9. Remove any foreign objects from the components or the interior area of the unit.
Vertiv
| Liebert
Distribution Cabinet
™
®
for Liebert EXM
User Manual |
™
™
unit by
™
24
Advertisement
Table of Contents
