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Table of Contents
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Summary of Contents for Helmer QuickThaw DH2
- Page 1 Plasma Thawing System Service Manual OuickThaw MODELS 360097-1/K...
- Page 2 ® 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 Scientific and Helmer.
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Page 3: Table Of Contents
Helmer Scientific Plasma Thawing System Service Manual Contents About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Intended Audience . -
Page 4: About This Manual
♦ 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 Scientific or your distributor for decontamination instructions and a Return Authorization Number. -
Page 5: Product Labels
Helmer Scientific Plasma Thawing System Service Manual 1 .6 Product Labels Note Service information varies depending on the model and power requirements. This information appears on the product specification label, located on the left side of the plasma thawer. Sample Product specification label... -
Page 6: Installation And Configuration
• 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. -
Page 7: Controls
Helmer Scientific Plasma Thawing System Service Manual 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 flash on and off to indicate that the heater is pulsing on and off to provide a minimal amount of heat to the chamber. -
Page 8: Temperature Alarm Setpoints
• Changing parameter values affects 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. -
Page 9: Temperature Controller Setpoints
Notes • Changing parameter values affects 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. -
Page 10: Level 1 Parameters And Values
Helmer Scientific Plasma Thawing System Service Manual 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. -
Page 11: Level 2 Parameters And Values
Helmer Scientific Plasma Thawing System Service Manual 3 .6 Level 2 Parameters and Values Parameter Description Default Value Display of SP1 output power percentage (read-only) (read only) Selection for manual control of power for SP1 SP1 power limit percentage SP2 power limit percentage (cooling) -
Page 12: Level 4 Parameters And Values
Helmer Scientific Plasma Thawing System Service Manual 3 .8 Level 4 Parameters and Values Parameter Description Default Value Program security lock nonE Derivative sensitivity Display sensitivity (or direct display of input) (read only) Disable SP2 alarm annunciator Program mode auto-exit switch (returns display to normal mode if no... -
Page 13: 3 .10 Sensor Calibration
Temperature controller display. Notes • Do not change the control sensor offset unless instructed in product documentation or by Helmer Technical Service. • If the variance is within acceptable limits for your organization, changing the offset value is optional. • The temperature controller will exit program mode after 60 seconds of no interaction Determine Temperature Controller Offset 1. -
Page 14: Maintenance
Helmer Scientific Plasma Thawing System Service Manual Maintenance Maintenance tasks should be completed according to the following schedule. Note These are recommended minimum requirements. Regulations for your organization or physical conditions at your organization may require maintenance items to be performed more frequently, or only by designated service personnel. - Page 15 Helmer Scientific Plasma Thawing System Service Manual Exterior Clean the exterior with soap or mild cleaning agent and water. Disinfect using a mild disinfectant solution. Clean the vents as needed to maintain airflow and prevent the motors from overheating. Chamber and Baskets Notes •...
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Page 16: Maintaining Water Cleanliness
This may push the cover off the plasma thawer and strain the lift-out motor. Chamber cover in place (DH4 model shown). Helmer CleanBath (400348-1) may be added to the water in the chamber to inhibit bacterial growth. 4 .4... -
Page 17: Supplies
Helmer Scientific Plasma Thawing System Service Manual 4 .5 Supplies ♦ Overwrap bags, standard size (4 boxes of 250 bags per box): 400273-1 ♦ Overwrap bags, large size (1 box of 250 bags): 400303-1 360097-1/K... -
Page 18: Troubleshooting
Helmer Scientific Plasma Thawing System Service Manual Troubleshooting NOTICE Review all safety instructions prior to troubleshooting. 5 .1 Error Messages Error Message Possible Cause Action “E1” (high temperature Verify plasma thawer setpoint is set below High Temperature alarm Temperature controller... -
Page 19: General Operation Problems
Helmer Scientific Plasma Thawing System Service Manual 5 .2 General Operation Problems Problem Possible Cause Action Main power switch is on, Verify power at the outlet. Repair original outlet or connect to a Outlet connection is faulty. but nothing is working. -
Page 20: Chamber Temperature Problems
Helmer Scientific Plasma Thawing System Service Manual Problem Possible Cause Action Agitation is noisy or rough. Confirm lift-out rails and bearings have been lubricated according to Rails and bearings on the maintenance schedule. Lubricate if necessary. lift-out system are not lubricated. -
Page 21: Alarm Activation Problems
Helmer Scientific Plasma Thawing System Service Manual Problem Possible Cause Action Displayed chamber Connection between control Check connections from control board to temperature controller, and temperature is higher board and temperature from temperature controller to temperature control sensor. Secure or lower than actual control sensor is faulty, or a connections if necessary. -
Page 22: Parts
Helmer Scientific Plasma Thawing System Service Manual Parts Notes • Before replacing parts, protect items in plasma thawer from extended exposure to adverse temperature. • Allow plasma thawer temperature to stabilize at setpoint after replacing parts. 6 .1 Front and Sides Front and left side features (115 V DH4 model shown). -
Page 23: Top And Rear
Helmer Scientific Plasma Thawing System Service Manual 6 .2 Top and Rear Top and rear of thawer (230 V DH4 model shown with parts from various models). Label Description Part Number Agitation switch 120202 Agitation switch cover 320524-1 Circuit breaker (2 A) -
Page 24: Interior
Helmer Scientific Plasma Thawing System Service Manual 6 .3 Interior Parts Accessible from the Rear Plasma thawer with rear panel removed (DH4 model shown). Label Description Part Number 120204 (110 V and 115 V) Lift-out motor capacitor 120260 (230 V) - Page 25 Helmer Scientific Plasma Thawing System Service Manual Parts Accessible from the Bottom Plasma thawer with bottom panel removed (DH4 model shown). Label Description Part Number 400716-1 (DH2) Control board 400272-2 (DH4 and DH8) 120269 (DH4 and DH8) Heater triac Chamber heater...
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Page 26: Basket
Helmer Scientific Plasma Thawing System Service Manual 6 .4 Basket Basket and lift out system parts. Label Description Part Number Basket assembly (2 compartment, includes bearing assemblies) 800294-1 (DH2 and DH4) Basket bearing assembly (includes hardware) 400625-1 Basket assembly (4 compartment, includes bearing assemblies) -
Page 27: Accessories
Helmer Scientific Plasma Thawing System Service Manual 6 .5 Accessories Accessories. Label Description Part Number Chamber cover 400769-1 (DH2) 400275-1 (DH4) 400276-1 (DH8) Security snap 320532-1 Overwrap bags (standard size, 4 boxes of 250 400273-1 bags each) Coupling tube (1.75” / 45 mm) 212041-1 90°... -
Page 28: Schematics
Helmer Scientific Plasma Thawing System Service Manual Schematics 7 .1 MAIN POWER 100 (±10%) V ac 50 Hz 115 (±10%) V 50/60 Hz (C) CHAMBER HEATER 230 (±10%) V 50/60 Hz connections to control board vary by voltage 100 V... -
Page 29: Dh4 And Dh8
Helmer Scientific Plasma Thawing System Service Manual 7 .2 DH4 and DH8 MAIN POWER 100 (±10%) V ac 50 Hz 115 (±10%) V 50/60 Hz TEMPERATURE 230 (±10%) V 50/60 Hz (C) CHAMBER HEATER CONTROLLER connections to control board vary by voltage... -
Page 30: Appendix A: Alarm Reference
Helmer Scientific Plasma Thawing System Service Manual Appendix A: Alarm Reference If an alarm condition is met, an alarm activates. The following table indicates if an alarm is audible (A) or visual (V). Messages for visual alarms, if applicable, appear in the table as well. -
Page 31: Appendix B: Warranty
Parts For a period of two (2) years, Helmer will supply at no charge, including freight, any part that fails due to defects in material or workmanship under normal use, with the exception of expendable items. Inspection of defective parts by Helmer will be final in determining warranty status. - Page 32 Helmer Scientific 14400 Bergen Boulevard, Noblesville, IN 46060 USA Copyright © 2019 Helmer, Inc.
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