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Chapter 4 – Smoke Control Section, Page 4-22__________________________________________________
Smoke Control – Troubleshooting
Green ESP Light Off Condition
Use the following flow chart as a guide to troubleshoot a green light off condition. Then refer to the
specific test procedures.
Check Voltages at the Wire to Cell
Connection Points. Proceed to “Testing
Voltages at Cell Connection Points”
instructions.
Voltage Good.
Green Light on.
No Voltage.
No Green Light.
Possible Plunger Safety Switch failure. Proceed
to “Testing Plunger Safety Switch” instructions.
ESP Cell failure. Proceed to
“Testing ESP Cells”
Repair Plunger
Safety Switch
Plunger Safety
Switch OK.
Possible Transformer Failure. Proceed to
“Testing Transformer Voltage” instructions.
No Voltage.
Replace
Transformer.
Voltage OK.
Check all wiring
connections.
Possible Door Safety Switch failure. Proceed to
“Testing Door Safety Switch” instructions.
Door Safety
Switch OK.
Replace Door
Safety Switch