Time Delay Feature; Troubleshooting Guide - Cooper ELPS502 Installation & Maintenance

8. Replace the old incandescent lamp (or old LED) in the pilot light and replace with the
new, 2 volt LED supplied with the new interior assembly.
9. Make all incoming wiring connections following the wiring diagram located in the new
assembly (also see Figure 7) and re-connect the EVLA12 light fixture(s) or EXIT sign
wire leads removed in STEP 5
Older circuit boards are wired to normally closed contacts. Replacement circuit
boards must be wired to normally open contacts.
10. Install the CID101 corrosion prohibitor device included with kit by pealing back the
protective covering to expose the adhesive. Install the CID101 in upper portion inside
enclosure wall.
REMOVAL OF EXISTING CIRCUIT ASSEMBLY
(For units made AFTER October, 2005).
1. Disconnect branch AC power at circuit
breaker and lockout.
2. Turn "Designated disconnect" switch to
"OFF".
3. After removing all AC and DC power to
the fixture, remove all cover fasteners to
gain access to the interior.
To avoid explosion, do not damage the flat joint surfaces. Do not use hammers or
prying tools to handle covers. Do not handle covers roughly, or place them on
surfaces that might damage or scratch the flat joint surfaces.
4. Disconnect wire leads at the pilot light and switch and remove the four ¼-20 screws
and lock washers on the aluminum backplate. Remove the old interior assembly and
set aside.
5. Disconnect all incoming connections from terminals GRD (#1) through L- (#7)
6. Install the new interior assembly inside your existing enclosure using the same four ¼-
20 screws and lock washers removed in Step 4.
7. Replace the old incandescent lamp (or old LED) in the pilot light and replace with the
new, 2 volt LED supplied with the new interior assembly.
8. Make all wiring connections following the wiring diagram located in the new assembly
(also see Figure 1).
9. Install the CID101 corrosion prohibitor device included with kit by pealing back the
protective covering to expose the adhesive. Install the CID101 in upper portion inside
enclosure wall.
CONNECT AC POWER AND TEST SYSTEM
1. Test wiring for correctness with continuity checks and also for unwanted grounds with
insulation resistance tester.
2. Close cover and securely tighten all cover bolts and nuts to 30 ft. lbs. Torque making
certain that no cover bolts are omitted.
3. Connect AC power and allow ELPS system to charge for 72 hours before conducting
any tests. Do not disconnect AC power or depress the "Push-To-Test" button until the
unit is fully charged. The LED indicator lamp will illuminate steadily (no blinking) when
the ELPS is fully charged.
4. Test the Emergency lighting system for proper operation. Turn on the designated
disconnect switch and observe: "Main Power ON" indicating light(s) should be "OFF".
And the EVLA12 emergency light(s) should be "OFF".
5. Press the "Push-To-Test" indicating push button switch and observe: "Main Power ON"
light should be "OFF" and the EVLA12 emergency light(s) should be "ON".
6. Lock the Designated disconnect switch "ON" to prevent unauthorized persons from
turning system "OFF"
7. Conduct periodic testing as outlined in Instruction Manual IF1072 as supplied with the
unit when originally installed.
IF 1510 • 05/06
NOTE
Figure 9
WARNING
Copyright © 2006, Cooper Industries, Inc.
Assistance may also be obtained through your local Crouse-Hinds Sales Representative
or the Crouse-Hinds Service Center, P.O. Box 4999, Syracuse, NY 13221, Phone 315-
477-5531.
Part Number
Interior Assembly ELPS K50
Place these instructions (in protective plastic envelope provided) in a safe, convenient
location attached to or near the emergency lighting fixture.
Wire Sizing for Remote Installation
(for copper wire)
Running Distance* (ft.) Between Power Supply and Remote Lighting Fixture
Ambient Temp. ºC 25
Lighting Fixture
Load-Max. Watts 12 24
Wire Size
• 14 AWG 125 63
• 12 AWG 198 99
• 10 AWG 317 158
• 8 AWG 505 253
Maximum distance to limit line voltage drop to 5%

TIME DELAY FEATURE

ELPS Emergency Lighting Systems are equipped with a time delay feature. This feature
will allow the emergency lighting fixture to remain lit after restoration of power. The time
delay is preset at the factory providing emergency lighting illumination for approximately
fifteen minutes and then automatically reverts back to a normal charging mode.
TROUBLESHOOTING
GUIDE
SYMPTOM
1. LED does not light
2. LED is blinking twice
3. After 72 hours, unit is not fully charged
(LED steady) and lamp heads flash
4. LED is blinking three times
TABLE 1
40
30 12 24 30 12
50 117 58 47 109
79 185 92 74 173
127 295 148 118 276
202 471 235 188 440
.
SOLUTION
1a. Verify power to fixture.
1b. Verify LED is fully seated in socket.
1c. Verify bulb is good.
1d. Verify transformer is properly
connected to circuit board.
2. Verify battery is properly connected to
circuit board.
3. Remove leads from pushbutton N/C
contacts and terminate the leads on
the N/O contacts.
4. Verify battery voltage under no load is
13.0V or higher after 72 hour charge.
If less than 13.0V consult factory for
battery replacement. If more than 13
volts, consult factory for complete
interior replacement as transformer
and/or circuit board could be
responsible.
55
24 30
55 44
87 69
138 110
220 176
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