Removal and replacement procedures 32
2.
Push the module into the slot on the back of the ECS cabinet door until it clicks into place.
EPO thermister
Two EPO thermisters are located in the hot aisle, one in cooling zone 2 and one in cooling zone 5.
While the thermisters are not technically at-temperature monitoring devices, when the hot aisle temperature
reaches 60ºC (140ºF), the thermister switch closes. When both thermister switches are closed, the EPO
system initiates an emergency shutdown.
You need scissors for installation.
Removing the EPO thermister
1.
Cut the tie wraps securing the thermister (1).
2.
Pull the thermister down to remove the thermister (2).
Replacing the EPO thermister
1.
Insert the replacement thermister (1).
