Surge Suppression Systems
Installation, Operation and Maintenance Manual
7
Liebert TVSS Units SL-22085 Rev 2, 11/2006
Troubleshooting / Servicing / Maintenance
Troubleshooting
If status failure indication occurs or Form C relay has changed
states, a qualifi ed electrician shall fi rst determine if the
systems voltage and proper phasing exists.
If the SPD remains in an alarm condition once the electrician
is satisfi ed that the electrical system and its connections are
normal, the unit should be repaired. At this point consult the
factory, having available the following information:
• Unit identifi cation number – (refers to the model and serial
numbers detailed on the data label and is located on the front
or upper left [hinge] side of the enclosure.)
• Nature of problem – (including status of all status indicators
and alarms).
Servicing
ONLY QUALIFIED PER SONNEL SHOULD PERFORM
MAINTENANCE ON THE SYSTEM.
HAZARDOUS VOLTAGES ARE PRESENT INSIDE THE UNIT
DURING NORMAL OPERATIONS.
ELECTRICAL SAFETY PRE-CAUTIONS MUST BE FOLLOWED
WHEN SERVICING THIS UNIT.
TO PREVENT RISK OF ELECTRICAL SHOCK, TURN OFF AND
LOCK OUT ALL POWER SOURCES TO THE UNIT BEFORE
SERVICING UNIT.
(For servicing assistance, contact your local Liebert
Sales Representative or Liebert at 800-288-6169 or
607-724-2484.)
Corrective Maintenance
The Liebert SPD is designed for years of trouble-free operation.
However, even the most reliable equipment may fail under
abnormal conditions.
Diagnostic indicators are provided to indicate when the unit
needs replacement (see individual SPD operation of this
manual for details). To ensure continuity of surge protection,
failed units should be replaced at the earliest convenient
service opportunity.
When replacing surge modules, other components should
be inspected for damage and replaced if necessary. Standard
electrical troubleshooting procedures should be used to
isolate problems other than failed surge current diverter
modules.
When replacing components, for continued proper operation
and safety, replace only with identically rated components.
Please contact factory for information on replacement parts.
Preventative Maintenance (Inspection and Cleaning)
Periodic system inspections, cleaning, and connection checks
are recommended to ensure reliable system performance and
continued surge transient protection.
It is diffi cult to establish a schedule for preventative
maintenance since conditions vary from site to site. Inspections
for failed surge modules using available diagnostics should be
done routinely (weekly or monthly).
Installation, Operation and Maintenance Manual
22
Liebert TVSS Units SL-22085 Rev 2, 11/2006
Surge Suppression Systems
PanelGuard Series — Type LPGE
Customer
Supplied
PanelBoard
Neutral Bar
Uninsulated
Ground Bar
Conduit
Collar
Conduit
Collar
Slots for
Sliding Trim
To Ensure
Proper Fit
Liebert
Supplied
LPGE Unit
3 Pole,
30 Amp
Circuit
Breaker
Summary Alarm
Contacts Inside
Module
(Remove Cover for Access)
Liebert Interceptor II Printer S9 9
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