___________________________________________________Chapter 6 – Testing and Repair, Page 6-49
Testing ESP Cells
To test the ESP Cells proceed as follows:
Note:
The lack of a green ESP CELL STATUS LIGHT may be caused by more the one Cell failing. It is
recommended that the following tests be conducted on all Cells.
1.
Stop the Exhaust Fan at the Command Center.
2.
For safety purposes turn off the cooking equipment and allow to cool.
3.
Cover any French Fryers to avoid any matter from dropping into the fry pot.
4.
Position the ladder at one end of the Ventilator and hook onto the Ladder Rail with the hooks at the
top of the ladder (Refer to Figure 4-47-1 and 4-48-1).
Extreme Caution: Double check to make sure
the ladder is properly hooked to the Ladder Rail.
5.
There are two or more Access Door Latches. Using a screw driver, unlatch the first latch.
Caution:
Always move the ladder to the remaining latches to unlatch.
Extreme Caution: Before opening the ESP Cell Access Door, note that the ESP Cell wires are hot -
do not touch the wire terminals.
6.
Place the ladder under the Door Hook, open the Access Door and hook open (Refer to Figure 4-48-1).
7.
Position the ladder under the first Cell to be tested.
Extreme Caution: Before removing the lead wires from Cells, a Standard Safety Voltage Test must
be conducted on each Cell as described on page 4-5.
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.
8.
Once the Standard Safety Voltage Test has been conducted, slide off the 5 KV, 10 KV and the ground
lead wires from all the Cells except the first Cell to be tested.
Important Note: Allow the wires to
hang in position. Do not connect to wires to the Receiving Studs as a direct short will occur (Refer to
Figure 6-51-1).
9.
Hold the Plunger Safety Switch in the closed position (or have a second person hold it in).
Now
measure voltage from ground on the Cell to the 10 KV volt connection point (Refer to Figure 6-50-1).
Voltage should be between 9,000 and 10,000 volts DC. If proper voltage is not obtained it indicates
an Ionizing Wire is broken. Proceed to “Replacing Ionizing Wires” instructions on page 6-51.
10.
Then measure voltage from ground on the Cell to the 5 KV volt connection point (Refer to Figure 6-
50-2). 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
6-52.
11.
With the Plunger Safety Switch in the out position, hook up the wires to the next Cell and repeat
steps # 7 through #9.
12.
Repeat this process for each Cell.
