VWR 62379-036 Big-Digit Stopwatch Chronograph Instruction Manual

1. Introduction

The VWR 62379-036 Big-Digit Stopwatch Chronograph is a versatile timing instrument designed for precision in laboratory and plant environments. This unit offers comprehensive stopwatch functions and full chronograph features, making it suitable for a wide range of timing applications.

Key features include:

• 6 cm diameter for comfortable handling.
• Easy-to-read display for clear visibility of measurements.
• Extra-tough, shockproof ABS construction ensures durability.

Figure 1: VWR 62379-036 Big-Digit Stopwatch Chronograph. This image displays the front view of the black stopwatch with its large digital display showing "22:38 10". Buttons are visible on the top and sides, and the VWR logo is present at the bottom of the display.

2. Setup

2.1 Battery Installation

The stopwatch typically comes with a battery pre-installed. If the display is blank or dim, battery replacement may be necessary. Refer to the battery compartment located on the back of the unit. Use a small screwdriver to open the compartment, insert a new battery (usually a button cell, e.g., LR44 or CR2032, check markings inside the compartment), ensuring correct polarity, and then securely close the compartment.

2.2 Initial Power On

Upon battery installation or first use, the stopwatch should power on automatically, displaying the current time or a default stopwatch mode. If not, press any button to activate the display.

3. Operating Instructions

The VWR 62379-036 stopwatch features multiple modes and functions controlled by its buttons. While specific button labels may vary slightly, common functions are typically assigned to buttons labeled MODE, START/STOP, and RESET/LAP.

3.1 Mode Selection

Press the MODE button (often located on the left side or top left) to cycle through the available modes:

• Time Display Mode: Shows current time, date, and day of the week.
• Stopwatch Mode: For timing events.
• Alarm Mode: For setting and activating alarms.
• Timer Mode: (If available) For countdown timing.

3.2 Setting Time and Date

1. In Time Display Mode, press and hold the RESET or SET button (refer to device markings) until the digits begin to flash.
2. Use the START/STOP button to adjust the flashing digit (hours, minutes, seconds, month, day, year).
3. Press the MODE or RESET button to move to the next setting.
4. Once all settings are complete, press the RESET or SET button again to exit setting mode.

3.3 Using the Stopwatch Function

1. Switch to Stopwatch Mode using the MODE button. The display should show "00:00:00" or similar.
2. Press the START/STOP button (often on the right side or top right) to begin timing.
3. To pause the timer, press START/STOP again. Press it once more to resume.
4. To record a lap or split time while the stopwatch is running, press the LAP/RESET button (often on the bottom left or front). The display will momentarily show the lap time while the main timer continues in the background.
5. To stop the timer completely, press START/STOP.
6. To reset the stopwatch to zero, press the LAP/RESET button while the stopwatch is stopped.

3.4 Setting and Using the Alarm

1. Switch to Alarm Mode using the MODE button.
2. Press and hold the RESET or SET button until the alarm time digits flash.
3. Use the START/STOP button to adjust the hours and minutes.
4. Press the MODE or RESET button to toggle between hours and minutes.
5. Press the RESET or SET button again to confirm the alarm time.
6. To activate or deactivate the alarm, press the START/STOP button in Alarm Mode (a bell icon or similar indicator may appear on the display when active).

4. Maintenance

4.1 Cleaning

Wipe the stopwatch with a soft, damp cloth. Do not use abrasive cleaners or solvents, as these can damage the plastic casing and display. Ensure the unit is dry before storage.

4.2 Storage

Store the stopwatch in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, consider removing the battery to prevent leakage.

5. Troubleshooting

• Display is blank or dim: Check the battery. Replace if necessary. Ensure the battery is inserted with correct polarity.
• Buttons are unresponsive: Ensure the unit is not in a locked mode (if applicable, though not specified for this model). Try removing and reinserting the battery to perform a soft reset.
• Inaccurate timing: Ensure the stopwatch is used in a stable environment. Extreme temperatures or strong electromagnetic fields can sometimes affect electronic devices.

6. Specifications

7. Warranty and Support

For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact VWR customer service directly. Keep your purchase receipt as proof of purchase.

For further assistance, visit the official VWR website or contact their authorized distributors.