Cleaning; Replacing The Mcu Battery - Ametek 5100HD User Manual

Cleaning

Replacing the MCU Battery

5-2 | 5100HD Zone 1 – X-Purge
Cleaning the exterior of the analyzer is required occasionally to remove
dust and other debris. Use a damp cloth to clean the analyzer's exterior,
including the keypad and display.
The battery on the MCU board powers the analyzer clock when the main
analyzer AC power is not connected. The clock's primary function is to
timestamp the Alarm Log entries. The AMETEK part number for one bat-
tery is 301-0382.
The battery's expected life-span is greater than five years; therefore, it is
important to order and stock a battery when your analyzer is approaching
five years from the original manufacture date.
It is possible that the battery can become damaged by a power spike,
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resulting in the need for a replacement.
NOTE
To replace the MCU battery:
1. Power down the analyzer.
Hazardous Locations
Before proceeding, test the area around the analyzer for flammable
gases. If an explosive gas atmosphere is present, do not open the
Electronics or Oven Enclosures, and do not power down the analyzer
or any alternate power sources that supply power to the analyzer
components. Proceed only when the area is found to be safe.
2. While wearing a grounding wrist strap, use an appropriate tool to
remove the battery from the MCU board. Insert the new battery.
3. Take all necessary precautions to safely power up the analyzer and
prepare it for operation.
Hazardous Locations
If an external, flame-proof disconnect switch (breaker) has been in-
stalled, close the breaker.
When the analyzer doors are open, take appropriate precautions to
avoid electrical shock. Hazardous voltages are present inside.