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Operating Instructions (Cont.)

7.

  Allow the 1 minute self-test to end (or press the test switch 

again to cancel self-test cycle).

8.

  Press the test switch again. Verify that the "Lamp Fail" LED 

and the "Service Alert" LED are not illuminated.

Operation

SPECTRON electronics operation is fully automatic. Accidental 

discharge of the unit battery prior to energization is prevented by 

an AC lockout circuit.  The unit's green "Operating Status" LED, 

located on the Spectron display panel, illuminates to indicate 

the presence of AC power.  The unit's red "Service Alert" LED 

will blink after application of AC power if the battery connection 

is not completed.  During normal operation, the unit's charging 

circuit maintains the battery at full capacity and the Spectron 

Controller constantly monitors charger performance. Should the 

terminal voltage vary from design parameter values, the unit's 

red "Service Alert" LED will blink , indicating a malfunction of 

the battery or charger. Upon interruption of normal AC power, 

or brownout condition, the Spectron Controller automatically 

switches the emergency lighting load to the battery. Emergency 

power will be provided for a minimum of 90 minutes. During 

emergency operation, the battery is protected from deep 

discharge by a low voltage battery disconnect circuit. Upon 

return of normal AC power, a 15 minute retransfer delay holds 

the unit in emergency operation mode allowing utility voltage 

to stabilize prior to reconnection.  The charger will then begin a 

recharge cycle.  A temperature compensated float type charger 

is provided in LZ models utilizing Pure-Lead or Lead-Calcium 

batteries.  This charger is designed to adjust charging voltage 

with changes in ambient temperature to maximize the life and 

performance of the unit's batteries.  LZ Series models utilizing 

Nickel-Cadmium batteries require no temperature compensation 

as they utilize a constant current type charger design to maintain 

the unit's batteries.  The charger will bring the battery to full 

capacity within acceptable U.L. time standards. The Spectron 

Controller automatically initiates a one minute discharge/

diagnostic test every 28 days ± 3.5 hours and a 30-minute 

discharge/diagnostic test every 6 months ± 1 day. These tests 

exercise the unit’s battery to optimize its capacity and allows 

the SPECTRON Controller to analyze emergency operation 

performance. Any malfunction of the unit’s transfer circuit or 

emergency lamps will cause the red "Service Alert" LED on 

the unit's display panel to blink.  During normal operation, all 

red "Service Alert" LED blinking indications of unit malfunction 

remain latched until corrected and retested.  A manual test 

switch allows a user programmable 1, 5, 30 or 60-minute 

diagnostic/discharge test at any time.  During all automatic and 

user initiated self-tests, the unit's green "Operating Status" LED 

will blink to indicate a diagnostic cycle in process.
 

 

2.

  Using a pen or a small screwdriver, select the proper load 

range by pressing the appropriate rocker switch to the left as 

shown in the Fig. 1 example above. 

 

CAUTION: Only one rocker must be selected.

3.

  With a small screwdriver, turn the Lamp Sense Adjust 

potentiometer fully 

clockwise

.

4.

  Press the unit test switch once. The emergency lamps will 

illuminate and a 1 minute self-test will begin. The green 

"Operating Status" LED on the unit's Spectron control 

panel will also begin to flash. The "Lamp Fail" LED located 

on the charger/distribution board (see Fig.1) should not be 

illuminated at this time. If "Lamp Fail" LED is illuminated, 

select the next lower load range. Example: If load range "4" 

was selected, select load range "3". 

5.

  Slowly turn the "Lamp Sense Adjust" potentiometer 

counterclockwise

 until the "Lamp Fail" LED on the charger/

distribution board illuminates. Then turn the adjustment pot 

back clockwise 

just slightly beyond

 the point where the 

"Lamp Fail" LED turns off to avoid false failure indications.  At 

this point, the red "Service Alert" LED on the unit's Spectron 

control panel will begin a repetitive cycle of  flashing 5 times 

followed by a pause ("lamp fault" service alert). 

6.

  While the self-test is still in progress, disconnect one of the 

emergency lamp wires from the charger/distribution board.  

The "Lamp Fail" LED on the charger/distribution board 

should turn on. Reconnect the lamp wire and observe that 

the  "Lamp Fail" LED goes out. If "Lamp Fail" LED remains 

illuminated, turn the "Lamp Sense Adjust" potentiometer fully 

clockwise and repeat step 5. 

1

2

3

4

OPEN

Lamp Fail LED

Lamp Sense Adjust 
Potentiometer

Example:
Press here to select load 
"RANGE" switch setting "1".

*

Fig. 1   

    Charger Distribution Board

Spectron

®

 

 

Self-Diagnostic Electronics Option

0601570  E  

currentlighting.com/dual-lite

© 2022 HLI Solutions, Inc. All rights reserved. Information and specifications subject to change 
without notice. All values are design or typical values when measured under laboratory conditions.

Page 2 of 2

 Rev 06/06/22

spectronopinstr-units-0601570_e-092508_R01

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