Leviton 52000 Serie Directives page 9

12. Surge Counter Test: If the 52000 Panel has a LCD surge counter on it's front panel, press it's
"Reset" switch, then the "Test" switch. The display should register surge counts each time the
"Test" switch is depressed. The "Reset" switch should be depressed whenever the LCD display
isat a maximum (the LCD unit's red LED will be illuminated). "Reset" may be depressed anytime to
clear the display.
Leviton Series 52000 TVSS Servicing Instruction Procedure: Carefully read these instructions as
well as the Module and Fuse Replacement Instruction Procedure before attempting service.
CAUTION:
BEFORE OPENING TVSS ENCLOSURE COVER, POWER MUST BE TURNED OFF.
ELECTROCUTION AND FATAL OR SERIOUS INJURY AND PROPERTY DAMAGE CAN RESULT
FROM FAULTY SERVICING. IT IS RECOMMENDED THAT THE 52000 TVSS PANEL PROTECTION
SYSTEM BE SERVICED BY A QUALIFIED ELECTRICIAN.
Diagnostic Indicator Functions: Table 1 lists the diagnostic functions of the 52000 series panels.
Module Diagnostics: Each module contains a Green LED for each mode. When illuminated, they
indicate that the module is properly seated, power for that phase is present, and the protection fuse
for that mode is intact. Modules should be replaced as soon as possible, after a failure is noted (unlit
Green LED). Absence of illuminated LEDs indicates either a loss of power or a blown fuse due to
excessive transients, such as due to a direct lightning strike. When this occurs, see the Module LED/
Fuse Correspondence Chart (located on the inside panel door) for the list of the Green LED indicators
and their designated fuses.
Fault Indication: A flashing Red warning LED, in addition to an audible beep tone, indicates loss of
power to the modules. This can be due to the absence of main phase power, or a blown fuse caused
by module failure due to transient over-stress (a condition which causes the Fault Indication). It also
transmits the occurrence to a remote indicator (an accessory item) via an optically isolated Class II
wire pair.
NOTE (For Delta panels only): When only one phase voltage is out (with no fuse or module
failure) Delta panels revert to single phase, the Green LEDs stay ON and the diagnostic
warning remains inactive.
Beep Disable Switch: When a fault has been indicated and noted by authorized personnel, the
audible beep tone may be disabled by momentarily pressing the beep disable switch. The Red
warning LED will continue to flash. When the malfunctioning fuse and module have been replaced,
the beep disable switch should be pressed again in order to re-enable the audible beep tone.
Battery Function: In the unlikely event that more than one fuse has blown, a 9-volt alkaline battery
is utilized to power the diagnostic circuitry so as to alert the user that there is a problem. When this
occurs, the flashing Red warning LED, audible beep tone, and remote transmitter are activated.
When multiple Green module LEDs are OFF, it is probable that the unit's diagnostic circuitry is being
powered from the battery. In order to conserve battery life, it is recommended that the user press the
beep disable switch to turn OFF the audible beep. After the fuses and modules are replaced, the Red
flashing LED will turn OFF. Press the beep disable switch in order to reactivate the audible warning
tone.
Battery Disable: The unit is shipped with the battery disable switch in the disable position so the
battery will not continually discharge in the absence of AC power. When AC power is first applied, the
Red battery-disable LED and Yellow low-battery LED will be lit. The battery disable switch should be
pressed momentarily to enable the battery. This will be indicated by both the battery disable and low
battery LEDs turning OFF.
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SERVICING INSTRUCTIONS
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