Advanced Instruments 4250 Manuale utente
4255 Rev11 032317
The Advanced® Cryoscope
Model 4250
User’s Guide
ii
Advanced®Cryoscope Model 4250 User’s Guide
Copyright
This user’s guide is copyrighted by dvanced Instruments with all
rights reserved. Under copyright laws, this guide may not be reproduced
in any form, in whole or part, without the prior written consent of
dvanced Instruments.
© 2005 dvanced Instruments.
dvanced Instruments has reviewed this guide thoroughly. ll material
contained within is believed reliable, but the accuracy and completeness
are not guaranteed or warranted, and are not intended to be representa-
tions or warranties concerning the product described.
Microsoft®and Windows®are registered trademarks of Microsoft
Corporation in the United States and other countries. Intel®is a regis-
tered trademark of Intel Corporation in the United States and other
countries. ll other trademarks are the property of dvanced
Instruments.
Hot-Line®Service
If you have any questions or problems regarding the proper operation of
your instrument, please contact our Hot-Line Service department by
calling one of the following numbers.
• 800-225-4034 (toll-free within the US and Canada; after normal
business hours, dial extension 2191)
• +US 781-320-9000 (elsewhere)
• 781-320-0811 (fax)
Table of Contents
iii
Safe Use vii
Symbol Conventions vii
General Cautions viii
FCC Requirements ix
Supplies, Parts & Accessories xi
Calibrators & Standards xiii
Foreword: Theory and Technique xv
Figure 1: Standard Freezing Curve xvii
Chapter 1 — Installation & Setup 1
Step 1 — Find a location for the instrument 1
Step 2 — Obtain additional items 1
Step 3 — Unpack the instrument 2
Step 4 — Install the heat transfer fluid 2
Step 5 — Load printer paper 5
Step 6 — Power up the instrument 5
Step 7 — Prime the heat transfer fluid pump 7
Step 8 — Run a diagnostic test 8
Step 9 — Set date and time 9
Step 10 — Set language preference 9
Step 11 — Check initial factory calibration 9
Step 12 — Proceed to Chapter 2 10
Figure 2: Model 4250 Cryoscope and Accessories 3
Figure 3: Load Printer Paper 6
Figure 4: Prime the Heat Transfer Pump 8
Table 1: Model 4250 Cryoscope Packing List 3
Chapter 2 — Instrument Operation 11
Hazardous material cautions 11
Function of major components 12
Sample preparation 17
Sample handling 17
Standards & controls 18
Selecting plateau mode 18
Before testing samples 19
Repeatability tips 20
Sample test procedure 23
Sample test errors 25
Changing operating settings 25
Using the RS-232 port 33
Figure 5: Model 4250 Components and Controls 12
Figure 6: Keypad Layout and Functions 14
Figure 7: Back Panel 15
Table 2: Barcode Port Connections 16
Table 3: Setup Menu Items 26
Chapter 3 — Standards & Quality Control 35
Repeatability and accuracy 35
Standards and controls 35
Maintenance of standards 36
Quality control implementation 36
Chapter 4 — Calibration 39
Calibration procedure 39
Celsius and Hortvet 40
Calibration notes 41
Chapter 5 — Troubleshooting & Service 43
Service & maintenance cautions 43
Obtaining service 44
Routine maintenance 46
Shutdown and storage 47
Troubleshooting checks 47
iv
Advanced®Cryoscope Model 4250 User’s Guide
Internal diagnostic tests 48
Fuse replacement 55
Sample probe checks and replacement 55
Mandrel, probe and stir/freeze wire alignment 59
Stir/freeze amplitude adjustment 61
Figure 8: Fuse Replacement 56
Figure 9: Probe and Stir/Freeze Wire Alignment 60
Figure 10: Operating Head 63
Figure 11: Mandrel, Probe and Stir/Freeze Wire Adjustment 65
Table 4: Test Menu Items 49
Appendices
ppendix — Troubleshooting Table 67
ppendix B — Product Specifications 75
ppendix C — Regulatory Notices 77
ppendix D — Warranty & Warranty Duties 81
ppendix E — Supplemental RS-232 Information 85
ppendix F — Symbol Definitions 89
ppendix G — Product Disposal and Recycling 93
ppendix H — Service Log 95
Index 97
v
Table of Contents
Notes:
vi
Advanced®Cryoscope Model 4250 User’s Guide
vii
Safe Use
To reduce the risk of bodily injury, electric shock, fire, and
damage to your instrument, please read and observe the precau-
tions in this User’s Guide.
• If the product is used in a manner not in accordance with the
equipment design, operating instructions or manufacturer's
recommendations, the operation of the product may be
impaired to the extent that a safety hazard is created.
• Do not attempt to perform electrical work if you are not
fully qualified. This manual is not a substitute for electrical
training.
Symbol Conventions
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important operat-
ing and maintenance (servicing) instructions in the literature
accompanying this product.
The lightning flash with arrowhead symbol within an equi-
lateral triangle is intended to alert the user to the presence of
uninsulated dangerous voltage within the product's enclosure
that may be of sufficient magnitude to constitute risk of elec-
tric shock to persons.
The static symbol within an equilateral triangle is intended
to alert the user to the presence of internal components that
could be damaged by static electricity.
This static symbol is intended to alert the user to the pres-
ence of a specific component that could be damaged by stat-
ic electricity.
viii
Advanced®Cryoscope Model 4250 User’s Guide
This symbol indicates the presence of alternating current ( C).
This symbol indicates the presence of a fuse.
This symbol indicates the presence of protective earth ground.
This symbol indicates the power is ON.
This symbol indicates the power is OFF.
NOTE dditional symbol definitions are available in ppendix F.
General Cautions
• This product should be operated only with the type of power source
indicated on the product’s electrical ratings label. Refer to the instal-
lation instructions included with the product.
• If the power cord provided is replaced for any reason or if an alter-
nate cord is used, the cord must be approved for use in the local
country. The power cord must be approved for the product’s listed
operating voltage and be rated at least 20% greater than the ampere
ratings marked on the product’s electrical ratings label. The cord
end that connects to the product must have an IEC 60320 connector.
• Plug the product into an approved grounded electrical outlet.
• Do not disable the power cord’s grounding pin.
• If an extension cord or power strip is used, make sure that the cord
or strip is rated for the product, and that the total ampere ratings of
all products plugged into the extension cord or strip do not exceed
80% of the cord’s or strip’s rating limit.
ix
Safe Use
• Route power cords so that they will not be walked on, tripped on, or
pinched by items placed upon or against them. Pay particular atten-
tion to the plug, electrical outlet, and the point where the cord exits
the product.
• Do not pull on cords and cables. When unplugging cords or cables,
grasp the corresponding connector.
• Do not install or use this product in any area subject to extreme
short-term temperature variations, or locations that exceed the speci-
fied operating environment temperatures.
• Never use this product in a wet area.
• To avoid injury or fire hazard, do not operate this product in an
explosive atmosphere.
• Do not install or use the product on an unstable, non-level work sur-
face.
• Do not operate this product with the covers removed or unsecured.
FCC Requirements
• WARNING: Changes or modifications to this unit not expressly
approved by dvanced Instruments could void the user’s authority
to operate the equipment.
• This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or televi-
sion reception, which can be determined by turning the equipment
x
Advanced®Cryoscope Model 4250 User’s Guide
off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
- Consult the dealer or an experienced radio TV technician for
help.
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