SFRI H18 Light V2 Technical Service Manual (Hematology Analyzer) – PDF

Description

SFRI H18 Light V2 Technical Service Manual (Hematology Analyzer) – PDF DOWNLOAD

Description

This is the complete official service manual for the SFRI H18 Light V2 hematology analyzer. Written for biomedical service engineers, it provides full installation, configuration, calibration, troubleshooting, and repair instructions for this compact 3-part differential analyzer.

The manual covers the complete inner workings of the instrument, including Coulter principle cell counting, photometric hemoglobin measurement, fluidics logic, motor sequences, electronic boards, sensors, and service-level software functions. It also includes all preventive maintenance procedures and complete technician passwords.

📑 TABLE OF CONTENTS 

1. Specifications

• Front and rear panel diagrams

• List of 20 analytical parameters + 3 histograms

• Sample volumes, dilution ratios, lyse volumes

• Linearity, precision, and performance ranges

2. Installation Procedure

• Site requirements (space, ventilation, electrical supply)

• Unpacking and instrument verification

• Start-up and self-check sequence

• Background check

• Stability / CV verification

• Calibration procedures

3. Theory of Operation

• Cell counting using the Coulter Principle

• RBC and WBC aperture measurement

• Hemoglobin reading using spectrophotometry

• Overview of the analog + digital signal chain

4. Fluidics System

• Fluidics cycle (Standby → Dilution → Counting → Cleaning)

• Complete fluidic algorithm and flow schematic

• RBC chamber, WBC chamber, and dilution block operation

• Vacuum block, valves, pumps, sensors

• Fluidic timing, thresholds, and step-by-step diagrams

5. Electronics

Switching Power Supply (S020056-V2)

Voltage map, connectors, protections.

CCU Board (Central Command Unit)

• Full schematic and component layout

• Connectors, pin assignments, peripherals

• Signal flow and main functions

CPU Board (Central Processing Unit)

• Processor functions

• EEPROM and firmware roles

• Communication and data paths

Liquid Sensor Adj./Distribution Board

LCD Adaptor Board / Thermal Printer Driver Board

6. Mechanics

• Sample probe arm assembly

  • Motor A & Motor B control

• Dilution machine (Motor C)

• Vacuum pump assembly (Motor D)

• Mechanical movement tests and alignment

7. Service Software

Mechanic Mode (Password: 6100)

Test motors, electronic valves, sensors, load circuits.

Special – Factory Mode (Password: 6666)

Factory calibration, CV checks, advanced diagnostic access.

Special – Parameters Adjust (Password: 6161)

Motor steps, fluidic timing, aspiration volume adjustments.

Network Transfer Protocol

RS-232 data output format.

8. Adjustments and Controls

• HGB Blank Voltage Adjustment (Target: 4.31 V ± 0.2 V)

• Vacuum Accuracy Check (Target: 236 mbar)

• Aperture Voltage Checks

  • WBC: 9–19 V

  • RBC: 11–25 V

• Reagent sensor sensitivity adjustment

• Motor step calibration

9. Maintenance

User Maintenance

• Daily: cleaning cycles, reagent checks

• Weekly: tubing cleaning, background verification

• Monthly: drain cleaning, fluidic block inspection

Technical Preventive Maintenance (SFRI PMK0201)

• Replacing vacuum pump seals

• Replacing dilution block seals

• Motor lubrication and tightening

• Fluidics cleaning and aperture conditioning

10. Troubleshooting

Complete troubleshooting table covering all common faults:

• HGB Bubble

• HGB Lamp Failure

• RBC CLOG

• WBC CLOG

• Motor A/B/C/D Stop Busy

• Reagent Empty / Sensor Fault

• Abnormal background

• Vacuum instability

• Printer and LCD failures

Appendices

• Appendix 3: Technician Passwords

• Appendix 4: Fluidic Cycle Step-by-Step (Illustrated)

• Appendix 6: Spare Parts List
  Includes probes, valves, vacuum pump, dilution block, sensors, boards, and mechanical assemblies.

5. File Details