OHAUS Courier 3000 Instruction Manual
1. Introduction
This manual contains installation, operation, and maintenance instructions for the Courier 3000. It is designed to help users install and operate the scale easily. Reading this manual carefully before installation and operation is essential.
1.1. Safety Precautions
Safety notes are marked with signal words and warning symbols to highlight potential hazards. Ignoring these notes can lead to personal injury, damage to the instrument, malfunctions, or false results.
Signal Words
- WARNING: Indicates a hazardous situation with medium risk, potentially resulting in severe injury or death if not avoided.
- CAUTION: Indicates a hazardous situation with low risk, potentially resulting in damage to the device or property, data loss, or minor to medium injuries if not avoided.
- ATTENTION: Provides important product information that may lead to equipment damage if not heeded.
- NOTE: Offers useful product information.
Warning Symbols
- General hazard: ⚠
- Explosion hazard: ⚠
- Electrical shock hazard: ⚡
Safety Precautions:
CAUTION: Read all safety warnings before installing, making connections, or servicing this equipment. Failure to comply with these warnings could result in personal injury and/or property damage. Retain all instructions for future reference.
- Before connecting power, verify that the equipment's input voltage range and plug type are compatible with the local AC mains power supply.
- Do not position the equipment where the power connection is difficult to reach.
- Ensure the power cord does not pose a tripping hazard.
- Operate the equipment only under specified ambient conditions.
- The equipment is for indoor use only.
- Do not operate in wet, hazardous, or unstable environments.
- Prevent liquids from entering the equipment.
- Do not load the equipment beyond its rated capacity.
- Avoid dropping loads onto the platform.
- Do not place the equipment upside down on the platform.
- Use only approved accessories and peripherals.
- Disconnect the equipment from the power supply before cleaning.
- Service should only be performed by authorized personnel.
WARNING: Never work in an environment subject to explosion hazards. The instrument's housing is not gas-tight, posing an explosion hazard due to spark formation or corrosion from gas ingress.
WARNING: Electrical shock hazards exist within the housing. Only authorized and qualified personnel should open the housing. Ensure all power connections are removed before opening.
1.2. Intended Use
This instrument is intended for use in pharmacies, schools, businesses, and light industry for measuring parameters as described in these instructions. Any other use or operation beyond technical specifications, without written consent from OHAUS, is considered unintended. While the instrument complies with current industry standards and safety regulations, it can pose a hazard if not used according to these instructions, potentially impairing its intended protection.
1.3. Overview of Parts and Controls
The scale's terminal unit features a front housing (Item 1) with a control panel (Item 2) containing two buttons and an LCD display. The rear of the terminal shows a load cell cable connector (Item 3) and a power port (Item 4).
1.4. Control Functions
The control panel displays two buttons labeled 'On/Zero Off' and 'Units/Hold Cal'.
- On/Zero/Off Button:
- Primary Function (Short Press): Turns the scale on if off. Zeros the display if the weight is ≤ 2% of capacity. Sets tare weight if the weight is > 2% of capacity. During calibration, captures zero and linearity points. In Display Hold mode, clears the displayed reading.
- Secondary Function (Long Press): Turns the scale off if on.
- Units/Hold/Cal Button:
- Primary Function (Short Press): Enters/exits hold mode. Changes the weighing unit.
- Secondary Function (Long Press): Pressing both buttons simultaneously enters calibration mode.
Note: Short Press: Press the key less than 3 seconds. Long Press: Press and hold the key for more than 3 seconds.
The LCD display shows various indicators: 'NET' for net weight, a stable weight symbol (*), a negative weight symbol, a display hold symbol (o), a battery status indicator, a center of zero symbol (▶0◀), and unit indicators for kilograms (kg) and pounds (lb).
2. Installation
2.1 Packing List
| Item | Description | Picture | Quantity |
|---|---|---|---|
| 1 | Base | [Scale Base Image] | 1 |
| 2 | Terminal | [Scale Terminal Image] | 1 |
| 3 | Coiled cable | [Coiled Cable Image] | 1 |
| 4 | AC adapter | [AC Adapter Image] | 1 |
2.2 Unpacking the Scale
- Take out documents and the AC adapter, setting them aside.
- Remove the foam blocks from the packaging.
- Carefully remove the Courier 3000 scale from the box and place it on a stable surface.
2.3 Setup
2.3.1 Power Supply Connection
AC Adapter Power:
- Connect the AC Adapter to the terminal.
- Plug the AC Adapter into an electrical outlet.
Dry Battery Power: The scale can be powered by 3 disposable AA size dry batteries (not included). Install batteries in the battery compartment.
2.3.2 Direct Wall Mounting
The terminal can be mounted directly to a wall or table using two screws (not included). Select appropriate screw sizes for the holes at the bottom of the terminal housing. For mounting to a wall without solid backing, use suitable anchoring hardware. (See Figure A for Direct Wall Mount Arrangement, showing dimensions of 112mm / 4.4" for mounting screw placement).
2.4 Leveling the Equipment
Place the scale on a firm, stable, flat surface, avoiding excessive airflow, vibration, heat sources, or rapid temperature changes. Rotate the scale feet for leveling, if applicable (for L-shaped bases only).
3. Operation
3.1 Turning On/Off the Scale
To turn on the scale, short press the 'On/Zero' button. The scale will display the software version and enter weighing mode. To turn off the scale, long press the 'Off' button until 'OFF' is displayed.
3.2 Setting the Display to Zero
The display can be zeroed in several cases:
- Upon turning on, the scale performs an initial zero.
- If the weight on the platform is less than or equal to 2% of the capacity, a short press of the 'On/Zero' button will zero the display.
- If the weight on the platform is greater than 2% of the capacity, a short press of the 'On/Zero' button will set the tare weight, and the display will show '0'.
Ensure the scale is stable before pressing 'On/Zero' to set the display value.
3.3 Changing the Units of Measure
To change the weighing unit, long press the 'Units/Hold' button until the desired unit appears on the display.
3.4 Calibration
3.4.1 Linear calibration
The scale performs linearity calibration using three points: zero calibration (no load), mid calibration point, and full calibration point (with loads).
Calibration Procedures:
- After powering on, simultaneously long press the 'Units/Hold' and 'On/Zero' buttons until 'CAL' appears on the display.
- Release both buttons.
- Short press the 'On/Zero' button. The display will show '-C-', indicating zero calibration is in progress (do not place any weight on the platform).
Upon completion of zero calibration, the display will show "C XXX kg" or "C XXX lb". Specific readings for different models are:
- C31M35R: 10 kg (20 lb)
- C31M75R: 25 kg (50 lb)
- C31M75L: 25 kg (50 lb)
- C31M200R: 100 kg (200 lb)
- C31M200L: 100 kg (200 lb)
- Place the required calibration load on the platform.
- Short press the 'On/Zero' button. The display will show '-C-', indicating midpoint calibration is in progress.
Upon completion of midpoint calibration, the display will show "C XXX kg" or "C XXX lb". Specific readings for different models are:
- C31M35R: 30 kg (60 lb)
- C31M75R: 75 kg (150 lb)
- C31M75L: 75 kg (150 lb)
- C31M200R: 200 kg (400 lb)
- C31M200L: 200 kg (400 lb)
- Place the required calibration load on the platform.
- Short press the 'On/Zero' button. The display will show '-C-', indicating top range calibration is in progress.
NOTE:
- When calibration is complete, the display returns to weighing mode.
- If the display shows 'CAL E' and exits calibration, it indicates calibration failure.
3.5 Application Modes
3.5.1 Weighing
This is the default factory setting for determining load weights. To begin weighing:
- Place a weight on the scale. Once the value is stable, the stable weight symbol (*) will appear on the display.
- If using a container, place the empty container on the platform. The display will show the container's weight. Once stable, the stable weight symbol (*) will appear.
- To capture the container's weight (tare), press the 'On/Zero' key. Once stable, the display will reset to zero, and the stable weight symbol (*) will appear.
- Fill the container as needed. The net weight of the contents will be displayed. Once stable, the stable weight symbol (*) will appear.
3.5.2 Display Hold
In Display Hold mode, the instrument retains the displayed weight if it is greater than 5 divisions. To activate:
- Short press the 'Units/Hold' button.
- Place a load on the platform. When the weight is stable and greater than 5d, the display will show the hold symbol (o), and the weight will remain even after the load is removed. This is useful for large boxes.
- To clear the held weight and exit Display Hold mode, short press the 'On/Zero' key. The display will then show the current weight on the platform.
NOTE: After zeroing, the display will resume capturing the first stable weight reading greater than 5d.
4. Maintenance
4.1 Cleaning
The housing of the Courier 3000 can be cleaned with a cloth dampened with a mild detergent. CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE CLEANING. WARNING: Electric Shock Hazard. Ensure no liquid enters the instrument's interior. Attention: Do not use solvents, harsh chemicals, ammonia, or abrasive cleaning agents.
4.2 Troubleshooting
| SYMPTOM | PROBABLE CAUSE(s) | REMEDY |
|---|---|---|
| Unable to turn on the scale. | 1. Power cord not plugged in or properly connected. 2. Power outlet not supplying power. 3. Batteries out of power. 4. Other failure. | 1. Check power cord connections and ensure it is plugged in properly. 2. Check the power source. 3. Change batteries. 4. Service required. |
| Cannot zero the scale, or will not zero when turned on. | 1. Weights on the platform exceed allowable limits. 2. Weight is not stable. 3. Load cell is damaged. | 1. Remove weights from the platform. 2. Wait for the platform to stabilize; check for excessive vibration around the scale. 3. Service required. |
| Error 8.1 | Weight reading exceeds the maximum capacity value. | 1. Remove weight from the platform. 2. Recalibrate the scale (See 3.4). |
| Error 8.2 | Weight reading below the minimum capacity value. | 1. Add weight to the platform. 2. Recalibrate the scale. |
| Error 8.3 | Weight reading exceeds Overload limit. | Reduce load on the platform. |
| Error 8.4 | Weight reading below Underload limit. | 1. Add weight to the platform. 2. Recalibrate the scale. |
| Battery symbol flashing | Low battery | Remove dry cell. |
| Lo bAt OFF | Low battery | Remove dry cell. |
| CAL E | Calibration failure | Use correct calibration weight. |
4.3 Service Information
If troubleshooting does not resolve an issue, contact an authorized OHAUS Service Agent. For service in the United States, call toll-free 1-800-526-0659 between 8:00 AM and 5:00 PM Eastern Standard Time. Outside the USA, visit www.ohaus.com to find the nearest OHAUS office.
5. Technical Data
5.1 Specifications
Equipment Ratings: Indoor use only
Altitude: 2,000m / 6,562ft
Operating temperature: -10°C to 40°C (14°F to 104°F)
Humidity: Maximum relative humidity 80% for temperatures up to 31°C (87.8°F), decreasing linearly to 50% relative humidity at 40°C (104°F).
Electrical supply: 5VDC, 1A (For use with certified or approved power supply with SELV and limited energy output) or 3 x AA (LR6) Batteries.
Voltage fluctuations: Up to ±10% of the nominal voltage.
Overvoltage category (Installation category): II
Pollution degree: 2
| Model | Capacity × Readability | Maximum Displayed Resolution | Weighing Units | Application Mode | Operating Temperature Range | Keyboard | Display | Stabilization Time | Power | Battery Life | Safe Overload Capacity | Construction | Cable Length | Platform Dimensions (L x W x H) | Net Weight | Shipping Weight | Shipping Dimensions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| i-C31M35R | 35 kg x 0.02 kg 70 lb x 0.05 lb | 1:1,750 | kg, lb | Weighing, Display Hold | 14°F to 104°F / -10°C to 40°C | 2 mechanical function keys | 28 mm / 1.1 in digit height LCD display with white backlight | 1 second | Dry cell battery: 3 x AA (LR6) Batteries or AC Power adapter: 100-240VAC ~ 0.5A 50/60Hz; power output: 5.0 VDC 1.0 A | 100 hours continuous use with backlight off | 150% of capacity | ABS Plastic Indicator Housing. Painted steel base with rubber feet. L models: smooth platform and adjustable feet. R models: raised, embossed tread. | 2m | 329 x 319 x 43.5 mm / 13.0 x 12.6 x1.7 in | 2.7 kg / 6.0 lb | 3.4 kg / 7.5 lb | 395 x 385 x 155 mm / 15.6 x 15.2 x 6.1 in |
| i-C31M75R | 75 kg x 0.05 kg 150 lb x 0.1 lb | 1:1,500 | 520 x 400 x 52.9 mm / 20.5 x 15.7 x 2.1 in | 8 kg / 17.6 lb | 9 kg / 19.8 lb | 600 x 485 x 100 mm / 23.6 x 19.1 x 3.9 in | |||||||||||
| i-C31M200R | 200 kg x 0.1 kg 400 lb x 0.2 lb | 1:2,000 | |||||||||||||||
| i-C31M75L | 75 kg x 0.05 kg 150 lb x 0.1 lb | 1:1,500 | |||||||||||||||
| i-C31M200L | 200 kg x 0.1 kg 400 lb x 0.2 lb | 1:2,000 |
5.2 Drawings and Dimensions
Terminal Dimensions (All Models): The terminal has a curved front, a display screen, and two control buttons. Its dimensions are approximately 104.6mm (4.12in) in width at the top, 204.9mm (8.07in) in width at the base, and 43.9mm (1.73in) in height.
Base Dimensions (i-C31MXXR): The 'R' model base is a painted steel platform with a raised, embossed tread pattern. Dimensions are approximately 329mm (12.95in) wide and 319mm (12.56in) deep, with a height of 43.5mm (1.71in).
Base Dimensions (i-C31MXXL): The 'L' model base is a painted steel platform with a smooth surface and adjustable feet. Dimensions are approximately 520mm (20.47in) wide and 400mm (15.75in) deep, with a height of 52.9mm (2.1in).
6. Compliance
Compliance to the following standards is indicated by the corresponding mark on the product.
- CE Mark: Complies with EU Directives 2011/65/EU (RoHS), 2014/30/EU (EMC), and 2014/35/EU (LVD). EU Declaration of Conformity available at www.ohaus.com/ce.
- UKCA Mark: Complies with UK statutory standards: Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012, UK Electromagnetic Compatibility Regulations 2016, and Electrical Equipment (Safety) Regulations 2016. UK Declaration of Conformity available at www.ohaus.com/uk-declarations.
- WEEE Directive: Complies with EU Directive 2012/19/EU. Dispose of this product according to local regulations at designated collection points for electrical and electronic equipment. For disposal instructions in Europe, refer to www.ohaus.com/weee.
- EN 61326-1
- ISED Canada Compliance Statement: CAN ICES-003(A) / NMB-003(A)
- ISO 9001 Registration: The management system governing production is ISO 9001 certified.
FCC Supplier Declaration of Conformity
Unintentional Radiator per 47CFR Part B
Trade Name: OHAUS CORPORATION
Model or Family identification: i-C31
Party issuing Supplier's Declaration of Conformity: Ohaus Instruments (Changzhou) Co., Ltd., Building C, No. 6 Zhengqiang Road, Xuejia Town, Xinbei District, Changzhou, Jiangsu 213022, China. Phone: +86 519 85287270
Responsible Party – U.S. Contact Information: Ohaus Corporation, 8 Campus Drive, Suite 105, Parsippany, NJ 07054, United States. Phone: +1 973 377 9000. Web: www.ohaus.com
FCC Compliance Statement: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used per the manual, it may cause harmful interference to radio communications. Operation in a residential area is likely to cause harmful interference, requiring the user to correct it at their own expense. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
7. Limited Warranty
OHAUS products are warranted against defects in materials and workmanship from the date of delivery for the duration of the warranty period. During this period, OHAUS will repair or replace defective components at no charge, provided the product is returned freight prepaid to OHAUS. This warranty does not apply if the product is damaged by accident, misuse, exposure to radioactive or corrosive materials, foreign material ingress, or unauthorized service or modification. If a warranty registration card is not returned, the warranty period begins on the date of shipment to the authorized dealer. No other express or implied warranty is given by OHAUS Corporation. OHAUS Corporation shall not be liable for any consequential damages. Warranty legislation varies by state and country; contact OHAUS or your local OHAUS dealer for further details.
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