Microlife 3AC1-AP Blood Pressure Monitor User Manual

The Microlife 3AC1-AP is a fully automatic upper arm blood pressure monitor with advanced positioning sensor (APS) technology, irregular heartbeat detection, 2-user memory with 99 readings each, date and time display, WHO blood pressure classification indicator, and one-touch operation. It features a large LCD display, adjustable cuff (22-42 cm), and is clinically validated for accuracy. Below are key sections for safety, features, setup, measurement, maintenance, and troubleshooting.

Features at a Glance

Key components: Main unit with LCD display, Adjustable upper arm cuff, Air tube, 4x AA batteries, Storage case, Instruction manual.

Safety Information

Read all instructions before use. Keep for future reference.

1. Do not use on infants, children, or persons unable to express themselves.
2. Consult physician before use if you have arrhythmia, blood circulation problems, or other conditions.
3. Do not use during blood dialysis or if you have pre-eclampsia.
4. Do not inflate cuff when not wrapped around arm.
5. Keep device away from children and pets.

WARNING! This device is for home use only, not for professional medical diagnosis. Measurements may be affected by movement, talking, or recent exercise.

First-Time Setup

Prepare device for first measurement.

1. Insert batteries: Open battery compartment, insert 4 AA batteries observing polarity.
2. Set date and time: Press MEMORY button, use SET to adjust values, confirm with START/STOP.
3. Select user: Press USER button to choose User 1 or User 2 before measurement.
4. Apply cuff: Wrap cuff on bare upper arm 1-2 cm above elbow, align artery marker with brachial artery.

CAUTION! Use only recommended batteries. Do not mix old and new batteries.

Specifications

• Measurement Method: Oscillometric, fully automatic.
• Measurement Range: Pressure: 0-299 mmHg, Pulse: 40-199 beats/min.
• Accuracy: Pressure: ±3 mmHg, Pulse: ±5% of reading.
• Memory: 2 users x 99 readings with date/time.
• Cuff Size: 22-42 cm arm circumference.
• Display: LCD with backlight.
• Power Supply: 4 x 1.5V AA batteries or optional AC adapter.
• Automatic Shut-off: Approximately 1 minute after measurement.
• Operating Conditions: 10°C to 40°C, 15% to 90% humidity.
• Storage Conditions: -20°C to 60°C, ≤93% humidity.

Controls and Display

Front Panel: START/STOP button, USER button, MEMORY button, SET button.

Display Symbols: User indicator (1/2), Memory full, Battery low, Irregular heartbeat, WHO classification colors (green/yellow/red), Date and time, Systolic/Diastolic readings, Pulse rate.

Settings: Date/Time setup, Memory review and clear, User selection.

Preparing for Measurement

For accurate results, follow these steps:

1. Avoid eating, smoking, or exercising 30 minutes before measurement.
2. Sit quietly for 5 minutes before measuring.
3. Sit on chair with back support, feet flat on floor.
4. Place arm on table so cuff is at heart level.
5. Apply cuff directly on bare skin, not over clothing.
6. Ensure tube runs down center of arm toward hand.

Tip: Take measurements at same time each day for consistent tracking.

Taking a Measurement

Follow proper measurement procedure:

1. Select user: Press USER button to choose User 1 or User 2.
2. Position cuff: Wrap snugly with 1-2 fingers fit between cuff and arm.
3. Start measurement: Press START/STOP button, device inflates automatically.
4. Remain still: Do not move or talk during measurement.
5. Read results: Systolic, diastolic, and pulse display with WHO color indicator.
6. Automatic deflation: Cuff deflates completely after measurement.
7. View irregular heartbeat: If detected, symbol appears on display.

WARNING! Do not inflate cuff beyond maximum pressure. If uncomfortable, press START/STOP to stop.

Memory Function

Review and manage stored readings:

1. View memory: Press MEMORY button to scroll through stored readings.
2. Select user: Press USER to switch between User 1 and User 2 memory.
3. Average reading: First displayed value shows average of last 3 readings.
4. Clear memory: Hold MEMORY button for 3 seconds to clear current user's memory.
5. Memory full: Symbol appears when 99 readings stored; clear memory to continue.

Care & Maintenance

Proper care ensures accuracy and longevity:

1. Clean cuff with damp cloth only; do not immerse in water.
2. Store in provided case away from direct sunlight and moisture.
3. Remove batteries if not using for extended period.
4. Do not expose to extreme temperatures or humidity.
5. Replace cuff if damaged or showing signs of wear.

CAUTION! Do not use alcohol, solvents, or abrasive cleaners. Do not disassemble device.

Regulatory Information

Medical Device: Class IIa according to MDD 93/42/EEC. CE marked. Manufactured according to ISO 13485. This device complies with Part 15 of FCC Rules. Copyright © Microlife AG. For support, visit www.microlife.com or contact your local distributor. Dispose of according to local regulations for electronic waste.

Troubleshooting

Reset: Remove batteries for 5 minutes to reset device.

Service: Do not attempt repair. Contact authorized service center.