Scanner 2000 Steam Mass Flow Transmitter ... - Spirax Sarco

Scanner ® 2000 microEFM Section 5
Section 5—Scanner 2000 Maintenance
The Scanner 2000 is engineered to provide years of dependable service with minimal maintenance. Batteries
require periodic replacement, and battery life depends on whether battery power is the primary or secondary
power source, the configuration settings of the Scanner 2000, and ambient temperature conditions.
All configuration settings are stored in nonvolatile memory; therefore, configuration settings will not be lost
in the event of battery failure.
The circuit assembly or keypad may also require replacement over the life of the instrument. Replacement
procedures are provided in this section.
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WARNING: Before servicing the Scanner 2000, disconnect all power sources/signal sources or
verify that the atmosphere is free of hazardous gases.
Lithium Battery Pack Replacement
The Scanner 2000 uses a lithium battery pack with a typical life expectancy of 1 year. Due to the flat discharge
characteristics of the lithium battery, it is difficult to determine how much life remains in a battery at any given
time. To preserve configuration and accumulated volume data, replace the battery pack at 1-year intervals.
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WARNING: To prevent ignition of hazardous atmospheres, do not remove the cover while circuits
are alive. The Scanner 2000 poses no hazard when opened in a safe area.
WARNING: The lithium battery pack that powers the Scanner 2000 is a sealed unit; however,
should a lithium battery develop a leak, toxic fumes could escape upon opening the enclosure.
Ensure that the instrument is in a well-ventilated area before opening the enclosure to avoid
breathing fumes trapped inside the enclosure. Exercise caution in handling and disposing of
spent or damaged battery packs. See additional information in Appendix B—Lithium Battery
Information.
Important Press the ENTER/SAVE key on the keypad before replacing the lithium battery pack to
save accumulated grand totals and previous day totals for flow run and turbine volume,
energy, and mass to nonvolatile memory. Once the battery pack is replaced and power is
restored to the unit, the last saved accumulated totals will be displayed in the LCD. The
instrument clock will need to be reset following battery replacement. All configuration
and calibration settings are automatically saved to non-volatile memory and are not affected
by a temporary loss of battery power.
The lithium battery pack is secured inside the enclosure by a velcro strap and connected to a connector (J1)
near the top of the circuit assembly.
To replace a lithium battery pack in the Scanner 2000, perform the following steps:
1. Unscrew the cover of the enclosure counter-clockwise until it separates from the main body of the enclosure.
2. Using a small standard blade screwdriver, remove the two #4-40 × 7/8” screws located to the right and
left side of the display (Figure 5.1, page 76).
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