
9.12 Maintenance Requirements
The following items require testing and/or maintenance to be performed on the SIM at least once a year.
•
Fuse Replacement
•
PCB Back Up Memory Battery Replacement
•
Power Supply Back Battery Replacement.
9.12.1 Fuse Replacement Method:
1. Disconnect all power from board.
2. Carefully remove fuse from board using proper tools.
3. Replace only with same rated fuse or 250 V, 4A 3AG.
WARNING: For Continued Protection Against The Risk Of Fire, Replace Only With Same
Type And Rating Of Fuse.
9.12.2. Back-Up Memory Battery Replacement
1. Disconnect all power from board.
2. Remove Battery from PCB
3. Replace only with only the same type battery as specified battery, see Spare Parts
Section for battery Part Number.
WARNING: Replacing with the incorrect battery may cause damage the PCB, and void
warranty.
9.12.3 Power Supply Back Battery Replacement
1. Check battery condition at least once a year,
2. Replace every 3-5 years with a UL Recognized Sealed Lead Acid batteries, 12 V dc.
Page civ of 110 IQ-400 Installation Manual 33-10057-001-C
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