__________________________________________________Chapter 4 – Smoke Control Section, Page 4-27
Smoke Control – Troubleshooting (Cont.)
Testing ESP Cells
To check for proper operation of each Cell, proceed as follows:
Note: The lack of a Green light may be caused by more the one Cell failing. It is recommended that the following
tests be conducted on all Cells.
Testing Outer Cells
1.
Open Electrical Compartment and Cell/Plumbing Compartment doors.
Extreme Caution: Before removing the lead wires from Cells, a Standard Safety Voltage Test must
be conducted as described on page 4-11.
This test is necessary to insure that the Grounding Disc
made proper contact with the brass grounding screws to drain all the residual power from the
transformer.
2.
Leaving all the Cell lead wires connected, pull all the first Cells (Outer Cells) out about 4”.
3.
Push in and tape the Door Safety Switch in the closed position.
4.
By hand, push in Plunger Safety Switch and hold (Refer to Figure 4-24-2). Now measure voltage
from ground on the Cell to the 5KV volt connection point. Voltage should be between 4,700 and
5,500 volts DC. If proper voltage is not obtained it indicates that the Cell Plates are shorting out.
Proceed to “Shorting Cell Plates” instructions on page 4-29.
5.
Then measure the voltage from ground on the Cell to the 10KV volt connection point. Voltage
should be between 9,000 and 11,000 volts DC. If proper voltage is not obtained it indicates
an Ionizing Wire is broken. Proceed to “Replacing Ionizing Wires” instructions on page 4-30.
6.
Perform steps #3, #4 and #5 on each outer Cell.
Figure 4-27-1
Outer Cell - End View
5KV Connection Point
Ground Connection Point
10KV Connection Point
