Helmer QuickThaw DH2 Manual de usuario
360097-1/K
Plasma Thawing System Service Manual
OuickThaw
TM
MODELS
DH2
DH4
DH8
Document Updates
The document is furnished for information use only, is subject to change without notice and should not be construed as a commitment
by Helmer Scientic. Helmer Scientic assumes no responsibility or liability for any errors or inaccuracies that may appear in the
informational content contained in this material. For the purpose of clarity, Helmer Scientic considers only the most recent revision of
this document to be valid.
Notices and Disclaimers
Condential / Proprietary Notices
Use of any portion(s) of this document to copy, translate, disassemble or decompile, or create or attempt to create by reverse
engineering or otherwise replicate the information from Helmer Scientic products is expressly prohibited.
Copyright and Trademark
Helmer® is a registered trademark of Helmer, Inc. in the United States of America. Copyright © 2019 Helmer, Inc. All other trademarks
and registered trademarks are the property of their respective owners.
Helmer, Inc., doing business as (DBA) Helmer Scientic and Helmer.
Disclaimer
This manual is intended as a guide to provide the operator with necessary instructions on the proper use and maintenance of certain
Helmer Scientic products.
Any failure to follow the instructions as described could result in impaired product function, injury to the operator or others, or void
applicable product warranties. Helmer Scientic accepts no responsibility for liability resulting from improper use or maintenance of
its products.
The screenshots and component images appearing in this guide are provided for illustrative purposes only, and may vary slightly from
the actual software screens and/or product components.
Helmer Scientic
14400 Bergen Boulevard
Noblesville, IN 46060 USA
www.helmerinc.com Part No. 360097-1/ Rev K
Document History
Revision Date CO Supersession Revision Description
H 07 MAY 2013* 8409 Supersedes A, B, C,
D, E, F, G Revised layout for ease of navigation and locating information.
I 16 MAY 2014* 9492 I supersedes H Removed 0086 mark from manual.
J 15 JUL 2016 12020 J supersedes I Updated DH2, DH4, DH8 basket assembly part numbers to reect new part
numbers assigned.
K 25 OCT 2019 15074 K supersedes J Reformatted for consistency with other Helmer manuals.
Updated calibration instructions.
Added the Preventive Maintenance Schedule
* Date submitted for Change Order review. Actual release date may vary.
Helmer Scientic Plasma Thawing System Service Manual
360097-1/K ii
Contents
1 About this Manual................................................................................................ 3
1.1 Intended Audience ..........................................................................................3
1.2 Model References...........................................................................................3
1.3 Intended Use...............................................................................................3
1.4 Safety Symbols and Precautions ...............................................................................3
1.5 Avoiding Injury..............................................................................................3
1.6 Product Labels .............................................................................................4
2 InstallationandConguration ...................................................................................... 5
2.1 Remove Packing Materials ....................................................................................5
2.2 Lifting and Carrying the Plasma Thawer .......................................................................... 5
2.3 Install External Thermometer (Optional) .......................................................................... 5
3 Controls ........................................................................................................ 6
3.1 Chamber Heater ............................................................................................6
3.2 Active Alarms and Error Messages..............................................................................6
3.3 Temperature Alarm Setpoints ..................................................................................7
3.4 Temperature Controller Setpoints ............................................................................... 8
3.5 Level 1 Parameters and Values ................................................................................ 9
3.6 Level 2 Parameters and Values ............................................................................... 10
3.7 Level 3 Parameters and Values ............................................................................... 10
3.8 Level 4 Parameters and Values ................................................................................11
3.9 Plasma Thawer Setpoint ......................................................................................11
3.10 Sensor Calibration.......................................................................................... 12
4 Maintenance.................................................................................................... 13
4.1 Test the High Temperature Alarm .............................................................................. 13
4.2 Clean the Plasma Thawer....................................................................................13
4.3 Maintaining Water Cleanliness ................................................................................15
4.4 Lubricate and Service Internal Parts ............................................................................15
4.5 Supplies .................................................................................................16
5 Troubleshooting ................................................................................................ 17
5.1 Error Messages............................................................................................17
5.2 General Operation Problems ................................................................................. 18
5.3 Chamber Temperature Problems ..............................................................................19
5.4 Alarm Activation Problems ................................................................................... 20
6 Parts .......................................................................................................... 21
6.1 Front and Sides............................................................................................21
6.2 Top and Rear..............................................................................................22
6.3 Interior...................................................................................................23
6.4 Basket................................................................................................... 25
6.5 Accessories...............................................................................................26
7 Schematics .................................................................................................... 27
7.1 DH2.....................................................................................................27
7.2 DH4 and DH8 ............................................................................................. 28
Appendix A: Alarm Reference......................................................................................... 29
Appendix B: Warranty ............................................................................................... 30
Helmer Scientic Plasma Thawing System Service Manual
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1 About this Manual
1.1 Intended Audience
This manual is intended for use by end users of the plasma thawing system and authorized service technicians.
1.2 Model References
Generic references are used throughout this manual to group models that contain similar features. For example, “DH models”
refers to all models of that type (DH2, DH4, DH8). This manual covers all plasma thawing systems, which may be identied singly,
by their size, or by their “series” (DH).
1.3 Intended Use
Helmer plasma thawing systems are intended for thawing frozen blood products and other medical, biological, and
scientic products.
1.4 Safety Symbols and Precautions
Symbols and precautions found in this document
The following symbols are used in this manual to emphasize certain details for the user:
Task Indicates procedures which need to be followed.
Note Provides useful information regarding a procedure or operating technique when using Helmer
Scientic products.
NOTICE Advises the user against initiating an action or creating a situation which could result in damage to
equipment; personal injury is unlikely.
Symbols found on the units
The following symbols may be found on the plasma thawer or plasma thawer packaging:
Caution: Risk of damage to
equipment or danger to operator Refer to documentation
1.5 Avoiding Injury
Review safety instructions before installing, using, or maintaining the equipment.
♦ Before moving unit, ensure chamber water has been removed.
♦ Never physically restrict any moving component.
♦Avoid removing electrical service panels and access panels unless so instructed.
♦ Use supplied power cords only.
REQUIRED: Decontaminate parts prior to sending for service or repair. Contact Helmer Scientic or your distributor for
decontamination instructions and a Return Authorization Number.
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1.6 Product Labels
Note
Service information varies depending on the model and power requirements.
This information appears on the product specication label, located on the left side of the plasma thawer.
C
A
B
SampleProductspecicationlabel
Label Description
A Model
BSerial number (SN)
CPower requirements
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2 InstallationandConguration
2.1 Remove Packing Materials
Note
Keep the packaging materials for future use.
The plasma thawer is shipped with packing materials to ensure it is not damaged during shipping. Remove the packing materials
prior to operating the plasma thawer.
1. Remove screws holding drain port cover, slide cover outward, and re-secure screws
2. Retain drain port cover, and all other accessories
3. Unscrew knob from underside of chamber cover
4. Relocate knob to top of cover
Drain port cover. Chamber cover with knob in proper position (DH4 model shown).
2.2 Lifting and Carrying the Plasma Thawer
Never move plasma thawer while connected to power or with water in chamber.
Notes
• Do not lift by holding the basket(s), as this may damage the basket(s).
• Helmer recommends using two people when lifting the Plasma Thawer.
When lifting the plasma thawer, hold the ends of the base of the plasma thawer and lift. If the base is not accessible, hold the ends
of the storage frame and lift.
2.3 Install External Thermometer (Optional)
Install the external thermometer according to the manufacturer’s documentation. Refer to the Digital Thermometer Manual for more
information on the Helmer DT1 digital thermometer.
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3 Controls
3.1 Chamber Heater
When the chamber heater is providing heat to the chamber, a green light illuminates on the temperature controller display. The light
may ash on and o to indicate that the heater is pulsing on and o to provide a minimal amount of heat to the chamber.
Temperature controller with chamber heater light (circled).
3.2 Active Alarms and Error Messages
If the temperature reaches the high temperature alarm setpoint or low temperature alarm setpoint, the temperature controller will
alternately display “-AL” and the chamber temperature. The red light on the temperature controller display also ashes. “E1” also
ashes on the cycle time indicator(s).
Temperature controller with a high temperature alarm. Alarm light is circled.
♦ If “E2” appears on the cycle time indicator, the basket lift-out system is malfunctioning.
♦ If “FAiL” alternately ashes on the temperature controller, there is an operational problem with the plasma thawer.
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3.3 Temperature Alarm Setpoints
Notes
• Changing parameter values aects plasma thawer operation. Do not change parameter values unless instructed in product
documentation or by Helmer Technical Service.
• The low temperature alarm is not enabled, by default. If the low temperature alarm is enabled, follow your
organization’s regulations to determine the temperature setting. Ensure the low temperature alarm setpoint is no
greater than 30 ºC
The monitoring and control system has alarms which activate if the chamber temperature is too high (or too low, if the low
temperature alarm is enabled). The setpoints for these alarms may be viewed and/or changed using the temperature controller.
Temperature controller display.
The high temperature alarm setpoint (AL.hi) species the temperature at which the High Temperature alarm should activate. If the
temperature detected by the temperature control sensor is greater than or equal to this value, the alarm activates.
The low temperature alarm setpoint (AL.Lo) species the temperature at which the Low Temperature alarm should activate. If the
temperature detected by the temperature control sensor is less than or equal to this value, the alarm activates.
View or change parameter values:
Notes
• Default high alarm setpoint is 37.6 °C.
• Low alarm setpoint is disabled by default (setpoint is 0.0 °C).
• When setting alarm setpoints, maintain at least a 1.0 °C dierence above or below the plasma thawer setpoint.
• When there is no interaction for 60 seconds, the temperature controller exits program mode.
1. Enter Level 1 program mode by pressing and holding the UP and DOWN buttons simultaneously for approximately 3
seconds. “tunE” and “oFF” ash on the display.
2. Press and release the UP or DOWN buttons until the desired parameter ashes on the display. For the High Temperature
setting, select the “AL.hi” parameter. For the Low Temperature setting, select the “AL.Lo” parameter.
3. Press and hold the * button. Press the UP or DOWN buttons to change the parameter value.
4. Release all buttons to exit the parameter. New settings are saved.
5. Exit program mode by pressing and holding the UP and DOWN arrow buttons simultaneously for approximately
3 seconds, or the current chamber temperature is displayed.
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3.4 Temperature Controller Setpoints
Temperature controller setpoints are programmed at the factory. Setpoints can be viewed and changed through the temperature
controller. Parameter values reside in 4 program levels.
Temperature controller display.
Values that are frequently changed during operation are listed below:
Parameter Program
Level Function
ZEro 3 Calibrate the temperature controller readout
AL.hi 1Set high temperature alarm value
AL.Lo 1 Set low temperature alarm value
View or change parameter values:
Notes
• Changing parameter values aects plasma thawer operation. Do not change parameter values unless instructed in
product documentation or by Helmer Technical Service.
• When there is no interaction for 60 seconds, the temperature controller exits program mode.
1. Enter Level 1 program mode by pressing and holding the UP and DOWN buttons simultaneously for approximately
3 seconds. “tunE” and “oFF” ash on the display.
2. Press and release the UP or DOWN buttons until the desired parameter ashes on the display. To access Level 2 or
Level 3 parameters, select the “LEVL” parameter.
3. Press and hold the * button, then press the UP or DOWN buttons to change the parameter value. To access Level 2
parameters, change the value for the “LEVL” parameter to 2. To access Level 3 parameters, change the value for the
“LEVL” parameter to 3.
4. Release all buttons to exit the parameter. New settings are saved. (If the “LEVL” parameter value is changed, the
temperature controller returns to the selected program level.)
5. Repeat steps 2 through 4 to access another program level, or to view or change parameter values in the selected level.
6. Access Level 4 parameters and navigate to Level 3 program mode.
7. Select the “UEr” parameter.
8. Press and hold the UP and DOWN buttons simultaneously for approximately 10 seconds. The “LOCK” parameter ashes
on the display.
9. Exit program mode by pressing and holding the UP and DOWN arrow buttons simultaneously for approximately
3 seconds, or the current chamber temperature is displayed.
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3.5 Level 1 Parameters and Values
Notes
• Parameters are listed in order of appearance.
• SP1 refers to the chamber heater.
• SP2 refers to the temperature alarm.
• Temperature controller is programmed at the factory with a setpoint of 36.5 ºC.
Parameter Description Default Value
Autotune selection oFF
SP1 proportional band (gain) or hysteresis (in °C) 2.2
SP1 integral time/reset (in minutes) 2.0
SP1 derivative time/rate 10
SP1 derivative approach control 0.5
SP1 proportional cycle-time 0.5
SP1 oset (manual reset) 0.5
Lock main setpoint oFF
Ramp rate (if ramp is on) 0
Ramp selection oFF
Soak time selection --
SP2 low alarm setpoint (in °C) 0.0
SP2 high alarm setpoint (in °C) 37.6
SP2 hysteresis or proportional band (in °C) 0.1
SP2 mode selection (ON/OFF or proportional cycle-time) on.oF
Parameter level currently selected 1
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