COMEM eSDB10 - Overvoltage Protection Replacement Instruction

12
Appendix B - Overvoltage protection replacement
instruction
Introduction
The scope of this instruction is to provide the instruction
for an easy and safe replacement or retrotting of the so
called "overvoltage protection" for eSDB.
Safety instruction
Make sure that the personnel installing/replacing the
"overvoltage protection"for eSDB:
• Are technically qualied and competent
• Fully comply with these assembling instructions
Improper operations or misuse could cause danger to:
• life and limb
• to the equipment and other assets of the operator
• to the proper function of the equipment.
Overvoltage protection replacement
Case
The overvoltage protection operated to protect the control
PCB so it has to be substituted by a new one.
Components
The kit to complete the replacement is made by the
following components (Tab.6):
Description Pictures
A Varistor:
It is provided by COMEM as spare part.
Each eSDB with overvoltage protection has
the rst varistor already mounted on the PCB
while an additional spare part is included in the
supply and placed within the electrical box.
B Fuse:
It is provided by COMEM as spare part.
Each eSDB with overvoltage protection has the
rst fuse already mounted on the PCB while an
additional spare part is included in the supply
and placed within the electrical box.
Table 6
Table 7
Main tools
The following tools have to be provided to the technician
who will take care of mentioned operations, COMEM will
not supply them.
Description Pictures
A Screwdriver
B Key n° 5 (for the screw type TCEI)
C Tester
SELF-DEHYDRATING BREATHERS eSDB 10/15/30