Tripp Lite PDUH30-ISO Owner's Manual page 5

Features
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NEMA 5-20P
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NEMA L5-20R
PROTECTION
PRESENT FAULT
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Grounding Lug: Use this screw to connect the PDU to ground.
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Input Plug Adapter (Select Models): Converts the twist-lock input plug to a straight-blade
input plug.
LINE
OK
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Diagnostic Indicator Lights: The three LEDs on the front panel
show current power conditions (from left to right):
Protection Present (Green LED): Indicates the surge-suppression
components are intact and providing full protection against spikes
and surges. This LED should be lit anytime the PDU is plugged
in and power is present. If the Protection Present LED does not
light, then some of the surge suppression components are not
functioning and the unit should be returned for repair as soon as
possible. You may still use the unit; however, connected equipment
will be protected from spikes and surges at a lesser level than
normal.
Line Fault (Red LED)*: Indicates a wiring fault has been detected.
If this LED illuminates at any time while the unit is plugged in,
the fault should be repaired by a qualified electrician as soon as
possible. This LED indicates that phases are reversed, ground is
missing or some other sort of wiring error exists in the circuit the
PDU is plugged into. The Line Fault detector circuitry will identify
most common wiring faults, but will not necessarily detect every
possible type of fault.
Line "OK" (Green LED): Indicates that nominal AC power
is present with no wiring faults detected. When this LED is
illuminated, AC power is safe for connected equipment.
* If the Line Fault (Red LED) indicator illuminates, carefully check
the AC receptacle the PDU is plugged into. The receptacle must be
tight and securely grounded. A loose AC receptacle may cause the
Line Fault LED to illuminate. The Red LED indicates the presence
of a wiring fault, but does not indicate the exact nature of the fault.
Only qualified electricians should make necessary outlet repairs.
If the Line Fault indicator illuminates and power is not present at
the outlets, the PDU's surge-suppression components have been
compromised as a result of surge damage. For service, call
Tripp Lite Customer Support at 773.869.1234 to remedy the problem
or receive instructions about return, repair or exchange.
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