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Explains symbols used in the manual for safety and operation.
Provides essential safety guidelines for operating the instrument.
Warns about hazards during service and maintenance procedures.
Advises on handling hazardous materials and biohazards.
Details FCC rules for device operation and compliance.
Lists consumables, spare parts, and accessories for the Model 3250.
Lists calibration standards and control solutions for the Model 3250.
Lists consumables, spare parts, and accessories for the Model 4250.
Lists reference solutions and calibration standards for the Model 4250.
Describes the function and purpose of the osmometers and cryoscopes.
Outlines the content and purpose of the service manual.
Provides contact information for technical support and service.
Identifies main internal components of the instruments with diagrams.
Explains calibration ranges and requirements for Model 3250 and 4250.
Step-by-step guide for performing instrument calibration.
Describes the power supply circuit for specific serial suffixes.
Describes the power supply circuit for later serial suffixes.
Explains the function of the sample thermistor and thermoelectrics.
Details the control board set configuration.
Describes the processor board, memory map, and real-time clock.
Details the application PCB and its functions, including ADC, I/O ports, and connectors.
Explains drive circuitry, thermoelectric cooler control, and head motor control.
Describes the head sensor board and its optical sensors.
Describes the board interfacing the keypad and display.
Details the barcode port specifications and programming requirements.
Describes the internal printer assembly for different serial suffixes.
Procedure for flushing the cooling assembly with a bleach solution.
Steps to drain the cooling system fluid.
Instructions for safely removing the instrument covers.
Detailed steps for cleaning the osmometer's sample well.
Detailed steps for cleaning the cryoscope's sample well.
Procedure for cleaning and lubricating the printer mechanism.
Importance of alignment and reference to the alignment tool instructions.
Overview of troubleshooting, error messages, and common causes.
Procedure to check and reset the freeze amplitude setting.
Identifies and addresses issues with stir driver noise in specific models.
Steps to adjust the head position sensors for proper operation.
Verifies the functionality of the head motor and sensors.
Explains the instrument's self-check upon power-up.
Details analog-to-digital tests for probe and cooling assembly diagnostics.
Procedure for setting or verifying the sample bin number.
Procedure for setting or verifying the block probe bin number.
How to check and adjust the stir amplitude setting.
Tests the display and printer output for proper function.
Tests the internal beeper functionality.
Verifies the functionality of each key on the keypad.
Tests the instrument's ability to read barcodes.
Procedure to reset and enter the instrument's serial number.
Information on updating instrument firmware via PC.
Comprehensive table of symptoms, explanations, and suggested actions.
Steps for updating firmware without disassembling the instrument.
Steps for updating firmware with the instrument cover removed.
Step-by-step guide for replacing the mandrel.
Instructions for replacing the clapper assembly.
Guide for replacing the main control board set.
Instructions for replacing only the application board.
Instructions for replacing only the processor board.
Instructions for replacing the cooling assembly.
Steps for replacing the cooling fan.
Instructions for replacing the display board.
Procedure for replacing instrument fuses.
Instructions for replacing the driver board (Serial Suffix D and higher).
Steps for replacing head up/down relays (Serial Suffix A-C).
Instructions for replacing the heat transfer fluid pump assembly.
Instructions for replacing the fluid filter.
Steps for replacing one-way check valves.
Detailed procedure for replacing the keypad assembly.
Instructions for replacing the load resistor.
Steps for replacing the motor assembly.
Procedure for replacing the NVRAM battery.
Instructions for replacing the power supply assembly.
Steps for replacing the printer assembly (Serial Suffix A-C).
Instructions for replacing the printer assembly (Serial Suffix D and higher).
Steps for replacing the printer mechanism.
Guide for aligning the probe, mandrel, and stir/freeze wire.
Procedure for replacing the sample probe.
Instructions for replacing the stir/freeze coil.
Steps for replacing the stir/freeze wire.
Guide for replacing a specific transistor (for older models).
Guide for replacing a specific transistor (for older models).
Instructions for replacing the tube ejector spring.
Steps for replacing the yoke assembly.
Instructions for upgrading the instrument to Serial Suffix E.
Instructions for replacing the main harness.
Assembly drawing for PCB402.
Assembly drawing revision for PCB402.
Schematic for the PCB402 printer interface board.
Schematic revision for the PCB402 printer interface board.
Assembly drawing for PCB523.
Assembly drawing revision for PCB523.
Schematic for the PCB523 driver board.
Schematic revision for PCB523.
Assembly drawing for PCB605.
Schematic for the PCB605 application board.
Schematic revision for PCB605.
Assembly drawing for PCB620.
Schematic for the PCB620 processor board.
Assembly drawing for 210102.
Schematic for 210102.
Assembly drawing for 3D3380.
Assembly drawing revision for 3D3380.
Schematic for 3D3380.
Schematic revision for 3D3380.
Interconnection schematic for specific serial suffixes.
Interconnection schematic for specific serial suffixes.
Interconnection schematic for specific serial suffixes.
Interconnection schematic for specific serial suffixes.
Interconnection schematic for specific serial suffixes.
Interconnection schematic for specific serial suffixes.
Interconnection schematic for specific serial suffixes.
Specifications for Model 3250, Serial Suffixes A-C.
Details electrical specifications like voltage, fuses, and power.
Specifies linearity and repeatability under reference conditions.
Details performance variations based on operating conditions.
Lists operating temperature, humidity, and storage requirements.
Specifications for Model 3250, Serial Suffixes D and higher.
Provides dimensions, weight, warranty, and certification details.
Details changes made per serial suffix revision for the Model 3250.
Specifications for Model 4250, Serial Suffixes A-C.
Details electrical specifications like voltage, fuses, and power.
Specifies linearity and repeatability under reference conditions.
Details performance variations based on operating conditions.
Lists operating temperature, humidity, and storage requirements.
Specifications for Model 4250, Serial Suffixes D and higher.
Provides dimensions, weight, warranty, and certification details.
Details changes made per serial suffix revision for the Model 4250.
Statements regarding compliance with US, Canadian, and European regulations.
Explains regulatory symbols related to product compliance and safety.
Lists regulatory approvals and their applicability based on serial suffix.
Defines various symbols used in the manual for controls, tests, and warnings.
Lists common replacement parts for the Model 3250.
Lists common replacement parts for the Model 4250.
Lists parts specific to Serial Suffix A-C models.
Lists parts specific to Serial Suffix D and higher models.
Provides guidance on environmentally responsible product disposal.
A log to record maintenance and service history.
General| Model | 3250 |
|---|---|
| Sample Volume | 20 µL |
| Accuracy | ±2 mOsm/kg H2O |
| Resolution | 1 mOsm/kg H2O |
| Measurement Time | 90 seconds |
| Power Requirements | 100-240 V, 50/60 Hz |
| Measurement Range | 0 to 4000 mOsm/kg H₂O |
| Operating Temperature | 15° to 30°C (59° to 86°F) |
| Calibration | Automatic |
| Data Output | RS-232 |
| Display | LCD |
| Storage Temperature | 0°C to 50°C |
| Type | Freezing Point Depression Osmometer |
| Repeatability | ±2 mOsm/kg H2O |
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