Milwaukee 2235-20 400 Amp Clamp Meter Instruction Manual

1. Introduction

This manual provides detailed instructions for the safe and effective use of the Milwaukee 2235-20 400 Amp Clamp Meter. This heavy-duty True-RMS electrical current tester is designed for professional residential, commercial, and industrial applications. Please read this manual thoroughly before operating the device.

2. Safety Information

Always adhere to the following safety precautions to prevent personal injury or damage to the meter:

• Ensure the meter is rated for the voltage and current levels being measured. The 2235-20 is rated CAT III 600V.
• Do not use the meter if it appears damaged or if the test leads are compromised.
• Always wear appropriate personal protective equipment (PPE), such as safety glasses and insulated gloves, when working with electrical circuits.
• Avoid contact with live circuits. Use the clamp jaw for current measurements to avoid direct contact.
• Do not operate the meter in wet conditions or explosive atmospheres.
• Refer to local and national safety codes for electrical work.

3. Package Contents

Verify that all items are present in the package:

• (1) Milwaukee 2235-20 400 Amp Clamp Meter
• (1) Electrical Test Lead Set (red and black)
• (2) AAA Batteries
• (1) Instruction Manual

Figure 1: Milwaukee 2235-20 Clamp Meter in its retail packaging, showing the meter, test leads, and manual.

4. Product Overview

The Milwaukee 2235-20 Clamp Meter features a robust design for various electrical measurements. Key components include:

• Clamp Jaw: For non-contact AC current measurement. Features a 1.0-inch jaw size.
• Function Dial: Selects measurement modes (AC Amps, AC/DC Volts, Ohms, Continuity).
• LCD Display: Black on white display with backlight for clear readings.
• Test Lead Inputs: Ports for connecting the red and black test leads for voltage, resistance, and continuity measurements.
• LED Work Light: Integrated light to illuminate the work area.
• Hold Button: Freezes the current reading on the display.
• MIN/MAX Button: Records minimum and maximum readings.
• Rugged Over-molding: Provides increased durability and user grip.

Figure 2: Front view of the Milwaukee 2235-20 Clamp Meter, highlighting the display, function dial, clamp jaw, and buttons.

5. Setup

5.1 Battery Installation

The Milwaukee 2235-20 requires two AAA batteries (included). To install or replace batteries:

1. Locate the battery compartment cover on the back of the meter.
2. Use a screwdriver to open the compartment.
3. Insert two AAA batteries, ensuring correct polarity (+/-).
4. Replace the cover and secure it with the screw.

5.2 Connecting Test Leads

For voltage, resistance, and continuity measurements, connect the test leads:

• Insert the black test lead into the "COM" (common) input jack.
• Insert the red test lead into the "VΩ" (voltage/resistance) input jack.

6. Operating Instructions

Turn the function dial to the desired measurement mode.

6.1 AC Current Measurement (Clamp)

To measure AC current up to 400 Amps:

1. Set the function dial to the "A~" (AC Amps) position.
2. Open the clamp jaw and enclose a single conductor (not a bundle of wires) of the circuit to be measured.
3. Ensure the jaw is fully closed around the conductor.
4. Read the current value on the LCD display.

6.2 AC/DC Voltage Measurement

To measure AC or DC voltage up to 600 Volts:

1. Connect the test leads as described in Section 5.2.
2. Set the function dial to the "V~" (AC Volts) or "V-" (DC Volts) position.
3. Touch the test probes to the points in the circuit where voltage is to be measured.
4. Read the voltage value on the LCD display.

6.3 Resistance Measurement

To measure resistance up to 4000 Ohms:

1. Connect the test leads as described in Section 5.2.
2. Set the function dial to the "Ω" (Ohms) position.
3. Ensure the circuit or component is de-energized before measuring resistance.
4. Touch the test probes across the component or circuit to be measured.
5. Read the resistance value on the LCD display.

6.4 Continuity Test

To test for continuity:

1. Connect the test leads as described in Section 5.2.
2. Set the function dial to the "Ω" (Ohms) position, then press the "SELECT" button (if available, or rotate dial further) to activate continuity mode (indicated by a speaker icon).
3. Ensure the circuit or component is de-energized.
4. Touch the test probes across the component or circuit.
5. An audible tone indicates continuity (low resistance).

6.5 Hold Function

Press the HOLD button to freeze the current reading on the display. Press it again to release.

6.6 MIN/MAX Function

Press the MIN/MAX button to record the minimum and maximum readings during a measurement session. Press repeatedly to cycle through MIN, MAX, and current readings.

6.7 LED Work Light

Press the LED button (often indicated by a light bulb icon) to turn the integrated work light on or off.

7. Maintenance

7.1 Cleaning

Wipe the meter's casing with a damp cloth and mild detergent. Do not use abrasive cleaners or solvents. Ensure the meter is dry before storage or use.

7.2 Battery Replacement

Replace batteries when the low battery indicator appears on the display. Refer to Section 5.1 for battery installation instructions.

7.3 Calibration

For optimal accuracy, it is recommended to send the meter in for calibration service once every year.

8. Troubleshooting

• No Display: Check battery installation and charge. Replace batteries if necessary.
• Inaccurate Readings: Ensure correct function mode is selected. Verify test lead connections. For current, ensure only one conductor is within the clamp jaw. Consider professional calibration if issues persist.
• No Continuity Tone: Ensure continuity mode is active. Check test leads for damage.

9. Specifications

Figure 3: Approximate dimensions of the Milwaukee 2235-20 Clamp Meter.

10. Warranty and Support

10.1 Warranty Information

The Milwaukee 2235-20 400 Amp Clamp Meter is covered by a 5-year warranty. For specific terms and conditions, please refer to the warranty documentation included with your product or visit the official Milwaukee website.

10.2 Customer Support

For technical assistance, service, or warranty claims, please contact Milwaukee customer support. Contact information can typically be found on the product packaging or the official Milwaukee website: www.milwaukeetool.com.

You may also refer to the UPC: 045242236930 for product identification.