User manual

MC-III™ EXP Flow Analyzer Section 6

5. Install the new battery in the enclosure in the same position as the original battery, and secure the Velcro

tightly around the battery.

6. Connect the replacement battery to the J1 connector.

7. Place the circuit assembly over the standoffs and fasten with the two #4-40 × 7/8” screws, ensuring that

all connector wiring is inside the enclosure.

8. Replace the enclosure cover, threading it onto the enclosure in a clockwise direction.

Important: The interruption of power to the MC-III EXP will cause the internal clock time to be inac-

curate. Reset the time via the interactive software. See Time/Date Synchronization, page 60.

Alkaline Battery Replacement

The alkaline battery pack will require periodic replacement. The dimming of the LCD may be an indicator

that battery power is diminishing, and the battery pack should be replaced.

WARNING: To prevent ignition of hazardous atmospheres, do not remove the cover while

circuits are alive. Under normal conditions, the MC-III EXP poses no hazard when opened in a

safe area. Replace the battery pack only with battery pack part number 9A-30099007.

Important: Press the ENTER/SAVE key on the keypad before replacing the alkaline battery to save

the accumulated total to nonvolatile memory. Once the battery is replaced and power is

restored to the unit, the last saved accumulated total will be displayed in the LCD.

The shrink-wrapped alkaline battery pack is secured inside the MC-III EXP enclosure by a Velcro strap and

connected to a connector (J1) near the top of the circuit assembly.

To replace the battery pack, perform the following steps:

1. Unscrew the cover of the enclosure counter-clockwise until it separates from the main body of the enclo-

sure.

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 6.3, page 94).