Eppendorf 5402 Manual |verified|

1. Introduction 1.1 About this Manual 1.2 Intended Use 1.3 Safety Information (Warning and Precaution Symbols)

2. Product Description 2.1 Scope of Delivery 2.2 Technical Specifications (Voltage, Frequency, Max. RPM/RCF) 2.3 Dimensions and Weight 2.4 Noise Level

3. Installation and Setup 3.1 Site Requirements (Bench space, ventilation) 3.2 Unpacking and Inspection 3.3 Rotor Installation 3.4 Rotor Removal 3.5 Connecting to Power Supply

4. Operation 4.1 Control Panel Overview (Display, keys, knobs) 4.2 Switching the Device On/Off 4.3 Loading Rotors (Symmetrical loading, tube selection) 4.4 Setting Parameters (Time, Speed/RCF, Temperature if applicable) 4.5 Starting and Stopping the Centrifuge 4.6 Short Spin (Impulse) Function 4.7 Opening the Lid (Emergency lid release)

5. Rotors and Accessories 5.1 Available Rotors (Fixed-angle, Swing-bucket – if any) 5.2 Maximum Load and Speed per Rotor 5.3 Adapters and Buckets 5.4 Rotor Life and Replacement

6. Maintenance and Cleaning 6.1 Cleaning the Centrifuge (Housing, chamber) 6.2 Cleaning Rotors and Accessories 6.3 Decontamination (Chemical resistance) 6.4 Maintenance Schedule 6.5 Lubrication (Rotor drive bolt, O-rings)

7. Troubleshooting 7.1 Error Messages (Display codes) 7.2 Centrifuge does not start 7.3 Imbalance shutdown 7.4 Lid does not open 7.5 Unusual noise or vibration 7.6 Service Contact

8. Disposal 8.1 Disposal of the Centrifuge (WEEE directive) 8.2 Disposal of Contaminated Parts

9. Warranty and Service 9.1 Warranty Terms 9.2 Original Spare Parts 9.3 Customer Service Contact

10. Appendix 10.1 RCF Conversion Chart (RPM to xg) 10.2 Quick Reference Card (Operation steps) 10.3 Declarations of Conformity (CE, etc.)

Note: The Eppendorf 5402 is a discontinued model (often replaced by the 5424 series). If you need an original PDF of the manual, check:

Eppendorf’s "Service" or "Download Center" (for legacy products)
Labx.com or manualslib.com (user-uploaded archives)

Creating a "deep paper" from a technical manual involves looking past the instructions and examining the underlying physics, safety engineering, and material science.

Below is a conceptual "deep paper" outline based on the technical specifications and operational logic of the Eppendorf 5402 microcentrifuge.

Centrifugal Kinetics and Thermal Stability in High-Speed Micro-Fractionation: A Study of the Eppendorf 5402 Platform

This paper analyzes the mechanical and thermodynamic principles governing the Eppendorf 5402 microcentrifuge. We explore the relationship between rotational kinetic energy and sediment velocity, the mitigation of aerosolized biohazards through seal integrity, and the critical role of active cooling in preserving biomolecular stability during high-RCF (Relative Centrifugal Force) procedures. 1. Kinetic Energy and Vector Balance Symmetry and Mass Conservation

: Modern centrifugation relies on the strict maintenance of center-of-mass alignment. The paper discusses the physics of rotor imbalance—where even a 0.1g variance at 14,000 RPM translates into significant destructive torque. The RCF Equation

: We derive the relationship between RPM and g-force, emphasizing how the fixed-angle rotor geometry optimizes the sedimentation path length for 1.5/2.0 mL microcentrifuge tubes. 2. Thermodynamics of the Rotor Chamber Frictional Heating

: At high velocities, air friction within the chamber generates significant heat. The 5402's refrigeration system is analyzed as a heat exchanger designed to counteract this cap T sub a m b i e n t end-sub increase, which can otherwise exceed 40 raised to the composed with power cap C and denature sensitive proteins or RNA. Sensor Calibration

: Discussion of the "Error 20" phenomenon—where temperature sensor malfunctions in the rotor chamber disrupt the feedback loop necessary for isothermal operation. 3. Material Science and Safety Engineering

Instrucciones de uso Rotor FA-45-48-11, FA-45-30-11, ... - Eppendorf

Introduction

In the world of molecular biology, clinical diagnostics, and analytical chemistry, few names carry as much weight as Eppendorf. For decades, their centrifuges have been the workhorses of laboratories worldwide. Among their legacy products, the Eppendorf Centrifuge 5402 stands out as a robust, reliable, and compact benchtop centrifuge.

However, even the most durable equipment requires proper guidance. Whether you have inherited a 5402 from a retiring colleague, purchased a used unit to save on lab costs, or are simply trying to decipher an error code on an existing machine, one document reigns supreme: the Eppendorf 5402 manual.

Finding a physical copy can be challenging, and understanding its dense technical language can be even harder. This article serves as a comprehensive companion to the official Eppendorf 5402 manual. We will cover where to find the manual, key operational instructions, routine maintenance schedules, common error codes, and safety protocols.

To Perform a Short Spin (Pulse):

Set the Time knob to "0" (spring-loaded position).
Press and hold the Start button. The rotor spins as long as you hold the button. Release to stop.

Final Spin

The Eppendorf 5402 manual is more than a collection of safety warnings and technical drawings. It is a bridge across two eras of laboratory science—one where machines were built to be repaired, and one where they are built to be replaced. For those willing to read its faded pages, the manual offers a quiet reward: the chance to hear that familiar, reassuring whir of a 5402 reaching 13,000 rpm, perfectly balanced, thanks to a 30-year-old diagram and a little patience.

Do you have a copy of the Eppendorf 5402 manual? The community is looking for a high-quality scan. Share it, and keep the history of centrifugation alive.

Eppendorf 5402 is a legacy refrigerated microcentrifuge designed for temperature-sensitive sample processing in biological and chemical laboratories. While a direct full-text PDF of the 5402 manual is not hosted on the primary Eppendorf Download Center due to its age, technical specifications and operational guidance are available through specialist laboratory equipment archives and secondary service documentation. Core Technical Specifications

is primarily valued for its precise temperature control and high-speed capabilities: Rotational Speed: Continuously adjustable up to 14,000 rpm. Temperature Range: Adjustable from -9°C to 40°C.

Cooling Performance: Features a "Fast Cool" function that can reach 4°C from ambient temperature within approximately 10 minutes. Capacity: Typically holds up to 18 x 1.5/2.0 mL tubes. Timer: Digital control ranging from 1 to 99 minutes. Operational & Safety Guidelines

Rotor Balancing: Always load the rotor symmetrically. If you have an odd number of samples, use a "balance tube" filled with an equal volume of water.

Manual Lid Release: In the event of a power failure or malfunction, the lid can often be opened manually by inserting a thin tool (like a bent paper clip) into the emergency release hole, typically located on the side of the housing.

Maintenance: Routine cleaning of the rotor chamber and rotor bores with a neutral cleaning agent is essential to prevent corrosion from saline or acidic samples.

Chemical Sensitivity: Rotors can be damaged by aggressive chemicals like halogenated hydrocarbons or concentrated saline solutions; spills should be cleaned immediately with distilled water. Common Troubleshooting Codes

While specific to the 5400 series, these errors frequently apply to the 5402 based on shared electronics from that era: Eppendorf 5402 Refrigerated Centrifuge - G-M-I, Inc.

The lab was quiet, save for the low-frequency thrum of the walk-in refrigerator. It was 2:00 AM on a Tuesday, the graveyard shift of the scientific process, and Elias was losing his mind.

His post-doc fate, and by extension his visa status, rested entirely on a batch of purified protein samples. He had spent six weeks growing the culture, inducing expression, and lysing the cells. Now, it all came down to the final clarification spin. He loaded the rotor of the Eppendorf 5402, balanced it meticulously on the digital scale, and locked the lid.

He pressed 'Start'.

The centrifuge let out a mournful, high-pitched whine, shuddered violently, and flashed an error code: E-3.

Then, silence. The 'Open' button did nothing. The lid remained locked. The rotor was seized.

Elias stared at the machine. It was a classic beige box, utilitarian and tough—the Eppendorf 5402, a workhorse of the lab for over a decade. But tonight, it was a tomb holding his career hostage.

He tried the usual tricks. He jiggled the handle. He unplugged it and plugged it back in. He pleaded with it in English and broken German. Nothing. The lid lock mechanism had failed mechanically, likely engaged by the false sense of an imbalance error.

He couldn't simply pry it open; the casing was reinforced plastic designed to withstand a rotor explosion. If he broke the lid, the samples inside would be contaminated by plastic shrapnel. He needed the key. Not a physical key, but the knowledge of how the machine thought.

Desperate, he dropped to his knees and pulled the heavy steel filing cabinet out from under the bench. A cloud of dust greeted him. He rifled through a graveyard of instruction booklets for defunct thermocyclers and spectrophotometers until his fingers brushed a thin, glossy booklet.

"Operating Manual: Eppendorf Centrifuge 5402."

He blew the dust off the cover. He had never actually read a manual in his life; he was a 'push buttons until it works' kind of scientist. But tonight, the machine had beaten him. He opened the booklet, the spine cracking with age.

He flipped past the safety warnings (which he ignored) and the technical specifications (which he didn't understand) until he found Chapter 9: Troubleshooting and Maintenance.

He scanned the page for "Lid Lock Failure" or "Rotor Seized."

Error Code E-3: Imbalance or Motor Fault.

"Thank you, captain obvious," Elias muttered. He looked further down the page. There was a small diagram of the rotor chamber. Emergency Release Procedure.

The text was dry and bureaucratic, but to Elias, it read like a treasure map.

In the event of a power failure or mechanical lock engagement, the lid may be opened manually using the emergency release tool located in the rotor accessories kit. If tool is unavailable, use a 3mm Allen wrench inserted into the access port located at the rear-right side of the chassis.

Elias grabbed his tool kit. He didn't have the fancy "Eppendorf emergency tool," but he had a generic Allen wrench set. He moved to the back of the centrifuge. There, hidden by a layer of grime, was a small, unassuming black rubber plug. He pried it out with his fingernail.

Behind the plug was a hexagonal hole.

He inserted the Allen wrench. He felt it catch against a mechanism inside. He looked at the diagram again. Turn counter-clockwise until a 'click' is heard.

He took a breath and turned the wrench. Resistance. Then—click.

He scrambled back to the front of the machine. He pressed the 'Open' button. With a pneumatic hiss of released pressure, the lid popped open.

Cool air rushed out. The rotor sat inside, intact. Elias carefully unscrewed the rotor lid. He pulled out the first microcentrifuge tube. The pellet was perfect—a tight, snowy white button at the bottom of the tube.

He looked at the manual, lying open on the floor. For five years, that book had sat gathering dust, dismissed as obsolete trash. Yet within its thirty pages, it held the authority to dismantle the machine’s defenses.

Elias carefully closed the lid, but he didn't put the manual back in the drawer. He set it on the benchtop, right next to his pipettes.

"Alright," he whispered to the machine. "Let's see what else you know."

He turned to the chapter on preventative

The Eppendorf Centrifuge 5402 is a refrigerated, high-speed microcentrifuge capable of reaching 14,000 RPM (15,800 x g) with a 0°C to +40°C temperature range. Key operational procedures include ensuring rotor symmetry, utilizing the "Fast Cool" function, and performing routine cleaning to avoid corrosion. For the full technical manual, users are advised to contact Eppendorf Service or search specialized laboratory equipment archives.

The story of the Eppendorf 5402 Go to product viewer dialog for this item.

is one of precision, temperature control, and lab-side reliability. While modern labs have moved on to newer models, the 5402 remains a classic "workhorse" of the bioscience world. The Quest for

In the life of a researcher, time and temperature are the greatest enemies. The Eppendorf 5402 was designed specifically for temperature-sensitive samples, with a cooling range from

. The "legendary" part of its manual (and its function) is the Fast Cool feature. In just 10 minutes, the 5402 can drop from room temperature to a crisp

, ensuring that delicate proteins or DNA samples don't degrade while waiting for a run. The Ritual of the Spin

Operating the 5402—as outlined in its classic operating instructions—is a sequence of careful steps that every lab tech learns:

The Balance: The most critical rule. You never start a run without ensuring the rotor is perfectly balanced. If you only have one sample, the "balancing tube" (a tube filled with an equal volume of water) becomes your best friend.

The Secure Click: Before the high-speed descent, you must secure the rotor lid. The safety manual warns that even minor scratches on accessories can lead to "severe internal material damage" if they fail at high speeds.

The Launch: You set your speed (reaching up to 14,000 RPM) and time, then wait for the high-pitched hum to reach a steady state. Maintenance: The Unsung Hero

The manual isn't just about buttons; it’s a guide to longevity. A well-maintained 5402 can last decades if the owner follows the "Weekly Rituals": eppendorf 5402 manual

Cleaning: Wiping down spills immediately to prevent corrosion from chemicals.

Lubrication: Greasing the O-rings and rotor threads weekly to keep the mechanical parts moving smoothly.

In many labs today, an old 5402 tucked in a corner is a testament to durability—a machine that, if treated according to its manual, will still hit its target temperature and speed just as it did on day one. Centrifuge 5420 - Eppendorf

The Eppendorf 5402: A Comprehensive Guide to its Manual and Operations

The Eppendorf 5402 is a high-performance, versatile centrifuge designed for a wide range of laboratory applications. As a leading manufacturer of laboratory equipment, Eppendorf has built a reputation for producing high-quality, reliable, and user-friendly instruments. In this article, we will provide an in-depth look at the Eppendorf 5402 manual, its features, and operations, ensuring that users can maximize the potential of this exceptional centrifuge.

Introduction to the Eppendorf 5402

The Eppendorf 5402 is a compact, benchtop centrifuge that offers a unique combination of performance, flexibility, and ease of use. With its sleek design and advanced features, this centrifuge is ideal for various laboratory settings, including molecular biology, biochemistry, and clinical research. The Eppendorf 5402 is designed to provide rapid and efficient separation of samples, making it an essential tool for researchers and laboratory professionals.

Understanding the Eppendorf 5402 Manual

The Eppendorf 5402 manual is a comprehensive guide that provides detailed information on the centrifuge's features, operations, and maintenance. The manual is designed to help users understand the instrument's capabilities, safety precautions, and troubleshooting procedures. It is essential to read and familiarize yourself with the manual before operating the Eppendorf 5402 to ensure safe and optimal performance.

Key Features of the Eppendorf 5402

The Eppendorf 5402 offers a range of innovative features that make it an exceptional centrifuge:

High-speed performance: The Eppendorf 5402 has a maximum speed of 5,400 rpm, allowing for rapid separation of samples.
Versatile rotor options: The centrifuge is compatible with a variety of rotors, including microtiter plate, PCR, and tube rotors.
Intuitive user interface: The Eppendorf 5402 features a user-friendly interface with a large display screen and easy-to-use controls.
Advanced safety features: The centrifuge is equipped with safety features such as automatic lid locking, imbalance detection, and over-temperature protection.

Operating the Eppendorf 5402

To ensure optimal performance and safety, follow these general operating procedures:

Installation: Place the centrifuge on a level surface, ensure proper ventilation, and connect it to a power source.
Rotor selection: Choose the appropriate rotor for your application and ensure it is properly installed.
Sample preparation: Prepare samples according to the manufacturer's guidelines and centrifuge requirements.
Setting parameters: Set the desired speed, time, and temperature using the user interface.
Starting the centrifuge: Close the lid, ensure the centrifuge is properly balanced, and start the centrifugation process.

Maintenance and Troubleshooting

Regular maintenance is essential to ensure the Eppendorf 5402 operates at peak performance:

Cleaning: Regularly clean the centrifuge and rotors to prevent contamination and damage.
Calibration: Perform routine calibration checks to ensure accuracy and precision.
Troubleshooting: Consult the manual for troubleshooting guides on common issues, such as error messages, imbalance, or failure to start.

Safety Precautions

When operating the Eppendorf 5402, always follow these safety guidelines:

Personal protective equipment: Wear protective gloves, lab coats, and safety glasses when handling samples and operating the centrifuge.
Sample handling: Handle samples with care, as they may be hazardous or infectious.
Centrifuge maintenance: Regularly inspect and maintain the centrifuge to prevent mechanical failure.

Conclusion

The Eppendorf 5402 is a powerful and versatile centrifuge designed to meet the diverse needs of laboratory professionals. By understanding the Eppendorf 5402 manual and following the guidelines outlined in this article, users can optimize the performance of this exceptional instrument, ensuring safe and efficient separation of samples. Whether you are a seasoned researcher or a new laboratory professional, the Eppendorf 5402 is an invaluable tool that can help you achieve your scientific goals.

Additional Resources

For more information on the Eppendorf 5402, including technical specifications, application notes, and FAQs, please visit the Eppendorf website or consult the manual. If you have any specific questions or require assistance with operating your Eppendorf 5402, do not hesitate to contact Eppendorf technical support.

Specifications

Maximum speed: 5,400 rpm
Maximum RCF: 5,230 x g
Capacity: 6 x 50 ml or 24 x 1.5/2 ml
Temperature range: -20°C to 40°C
Noise level: < 55 dB
Dimensions: 24.5 cm x 38.5 cm x 21.5 cm (WxDxH)

Eppendorf 5402 Manual: Download and Access

The Eppendorf 5402 manual is available for download on the Eppendorf website. You can also access the manual through the Eppendorf online portal or by contacting Eppendorf technical support. It is essential to have a copy of the manual readily available for reference to ensure optimal performance and safe operation of the centrifuge.

The Eppendorf 5402 is a classic refrigerated benchtop microcentrifuge frequently found in labs for temperature-sensitive sample preparation. While the original physical manual can be rare for this legacy model, Core Specifications & Features

Temperature Control: Adjustable from -9°C to 40°C (-16°F to 104°F), making it ideal for maintaining the integrity of delicate biological samples.

Performance: Capable of speeds up to 14,000 RPM, which can be monitored via the digital display.

Rapid Cooling: Includes a Fast Cool function that can bring the rotor chamber down from ambient temperature to 4°C in roughly 10 minutes.

Capacity: Typically equipped with an 18-place rotor for 1.5 mL or 2.0 mL tubes. Essential Operating Guidelines

To ensure safety and equipment longevity according to standard Eppendorf safety protocols:

Balance Your Load: Always load tubes symmetrically by weight. Opposing tubes must be of the same type and filled with equal mass to prevent rotor damage.

Rotor Inspection: Before every run, check that the rotor is properly seated on the drive and that the O-ring is intact and not cracked.

Lid Safety: Ensure the lid is securely closed before starting; the device will not operate if the lid sensor is not engaged.

Cleaning: In case of spills, immediately switch off the device and disconnect it from power. Use neutral cleaning agents and disinfectants recommended in the official download center for modern equivalents to avoid corroding the rotor chamber. Quick Troubleshooting

Error 3: Usually indicates that no rotor is detected. Check the rotor installation. Table of Contents 1

Error 6: Often signals a brake malfunction or improper rotor seating.

Error 23: General drive error. Try switching the device off and back on to reset the electronics.

For further technical documentation, you can visit the Eppendorf Service & Support page to find guides for similar legacy models or request specific archived manuals. AI responses may include mistakes. Learn more Eppendorf 5402 Refrigerated Centrifuge - G-M-I, Inc.

The Eppendorf Centrifuge 5402 is a classic, high-performance refrigerated microcentrifuge designed for the rapid separation of liquid substance mixtures. Whether you have recently acquired a pre-owned unit or are looking to maintain an existing one, understanding the technical specifications and operational requirements is essential for lab safety and sample integrity.

While this unit has been succeeded by newer models like the 5415R or 5424R, the 5402 remains a workhorse in many molecular biology and biochemistry labs due to its robust build and reliable cooling system. Technical Specifications and Capabilities

The 5402 is designed for high-speed applications involving microtubes. Key performance metrics include: Maximum Speed: 14,000 RPM. Maximum RCF: 15,800 x g. Temperature Range: -9°C to +40°C. Timer Range: 0 to 99 minutes or continuous run.

Rotor Capacity: Typically holds a 12, 18, or 24-place fixed-angle rotor for 1.5/2.0 mL tubes. Safety Guidelines and Installation

Before powering on the unit, ensure the centrifuge is placed on a level, stable surface. Adequate ventilation is required, especially for the cooling fans located at the rear and sides of the machine.

Always ensure the rotor is securely fastened to the motor shaft using the provided rotor key.

Never operate the centrifuge without a properly balanced load. Even a weight difference of 0.1g between opposite tubes can cause excessive vibration.

Check the lid gasket regularly to ensure a proper vacuum seal for cooling efficiency. Operating Instructions

Operating the Eppendorf 5402 is straightforward, utilizing an analog-digital hybrid interface.

Power On: Use the main switch located on the side or rear of the unit.

Set Temperature: Adjust the temperature dial to your desired setting. For sensitive samples (like DNA/RNA), it is recommended to "Pre-Cool" the centrifuge by running it empty at the target temperature for 10 minutes.

Load Rotor: Place tubes symmetrically. If running an odd number of samples, use a balance tube filled with water. Set Speed and Time: Adjust the RPM and Time dials. Start: Close the lid firmly and press the "Start" button.

Braking: The centrifuge will automatically decelerate when the timer reaches zero. Most 5402 models feature a "Short" button for quick pulses. Maintenance and Troubleshooting

Routine maintenance extends the life of the 5402 significantly.

Cleaning: Use a mild detergent and 70% isopropyl alcohol to wipe down the rotor chamber and the rotor itself. Avoid aggressive chemicals that could corrode the aluminum.

Defrosting: If ice builds up in the chamber, leave the lid open and allow it to melt. Wipe away excess water to prevent motor damage.

Error Codes: If the unit displays an error or fails to spin, check the carbon brushes (in older models) or the lid latch sensor. Finding the Full PDF Manual

Because the 5402 is a legacy product, Eppendorf may no longer host the manual on their primary homepage. However, digital archives and lab equipment repositories often carry the full technical manual, which includes wiring diagrams and detailed parts lists.

To keep your lab compliant with GLP (Good Laboratory Practice), it is highly recommended to print a physical copy of the manual and keep it in a binder near the workstation for all users to reference.

If you tell me the specific error code or mechanical issue you're facing, I can provide the exact troubleshooting steps from the technical documentation.

Comprehensive Guide to the Eppendorf 5402 Refrigerated Centrifuge

The Eppendorf 5402 is a legacy refrigerated microcentrifuge designed for high-performance laboratory applications. While detailed manuals for this specific discontinued model can be difficult to locate, the following guide synthesizes technical specifications, operating procedures, and maintenance protocols from official Eppendorf resources and specialized laboratory equipment suppliers. Technical Specifications

The Eppendorf 5402 is characterized by its digital controls and precise cooling capabilities. Specification Maximum Speed 14,000 RPM (up to 16,000 x g) Speed Increments Temperature Range -9°C to 40°C Timer 0 to 99 minutes or continuous (momentary button) Capacity Standard 18-place rotor for 1.5/2.0 mL tubes Dimensions 60 cm (W) x 47 cm (D) x 29 cm (H) Weight Approximately 43 kg (95 lbs) Key Operating Instructions

Following standard operating procedures (SOPs) is critical for safety and sample integrity. EPPENDORF - 5402 Refrigerated Microcentrifuge - LabWrench

Safety & Maintenance Notes

Always balance tubes before running.
Do not open lid while rotor is spinning.
Replace rotors or adapters if damaged — do not run with cracks.
Clean spills promptly; use compatible disinfectants and avoid corrosive solvents on seals or electronics.
Periodic service: check bearings and speed accuracy; calibrate if needed following manufacturer service schedule.

3. Contacting Eppendorf Directly

If digital searches fail, email Eppendorf customer support. Provide the serial number (located on the back panel of the centrifuge). They can send a scanned copy, though response times for legacy products may take 5–7 business days.

Section 6: Troubleshooting & Error Codes

The Eppendorf 5402 is pre-digital, so errors are indicated by behavior, not LCD messages.

Key Points from the Eppendorf 5402 Manual

Installation and Environment:
- Place the centrifuge on a stable, level surface.
- Ensure good ventilation around the device.
- Avoid operating in areas with high humidity, corrosive gases, or explosive atmospheres.
Operating the Centrifuge:
- Read and understand the safety precautions.
- Ensure the rotor and accessories are properly installed and balanced.
- Select the appropriate centrifugation parameters (speed, time, temperature).
Maintenance and Troubleshooting:
- Regularly inspect and clean the centrifuge and its components.
- Check for wear and tear on rotors and accessories.
- Refer to the troubleshooting section for common issues and solutions.
Safety Precautions:
- Always close the lid before starting the centrifuge.
- Never open the lid during operation.
- Use appropriate sample containers and ensure they are properly sealed.
Technical Specifications:
- Maximum speed: [Insert specific value from the manual]
- Temperature range: [Insert specific value from the manual]
- Noise level: [Insert specific value from the manual]

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