Page 2
The document is furnished for information use only, is subject to change without notice and should not be construed s a commitment by Helmer Scientific. Helmer Scientific assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this material.
Helmer Scientific Plasma Thawing System Operation Manual 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”...
Helmer Scientific Plasma Thawing System Operation Manual 1 .6 General Recommendations General Use Allow plasma thawer to come to room temperature before switching power on. During initial startup, low temperature alarm may sound while plasma thawer reaches operating temperature. Initial Loading Allow chamber temperature to stabilize at the setpoint before thawing frozen product.
Helmer Scientific Plasma Thawing System Operation Manual Installation 2 .1 Location Requirements Note Helmer recommends placing the drain or waste container on the same side as the drain port. ♦ Has a sturdy, level surface ♦ Has a grounded outlet meeting national electric code (NEC) and local electrical requirements ♦...
Helmer Scientific Plasma Thawing System Operation Manual General Operation 3 .1 Initial Start Up 1. Plug the power cord into a grounded outlet that meets the electrical requirements on the product specification label. 2. Press the AC ON/OFF button to power the plasma thawer ON.
Helmer Scientific Plasma Thawing System Operation Manual 3 .3 Drain the Chamber • Disconnect the plasma thawer from AC power before draining the chamber. • Do not move the plasma thawer when the chamber is filled or if the plasma thawer is connected to AC power.
Helmer Scientific Plasma Thawing System Operation Manual 3 .5 Load Bags • Do not manually lift the baskets out of the chamber. Manually lifting baskets will damage the system. Press the LIFT OUT button to raise the baskets. • Press the LIFT OUT button only if the baskets are installed. The basket must be installed for the lift out system to operate correctly.
Helmer Scientific Plasma Thawing System Operation Manual Bag in standard-sized overwrap bag with security snap. 3 .6 Thaw Cycle Functions Keep fingers and clothing away from basket(s) while in motion. Note • If a temperature alarm is active, a thaw cycle cannot be initiated until the alarm condition is cleared.
Helmer Scientific Plasma Thawing System Operation Manual Start a Cycle: Note The cycle time, cycle start, and lift out for each basket is controlled individually on DH4 and DH8 models. 1. Confirm the chamber has been filled to the appropriate level.
Helmer Scientific Plasma Thawing System Operation Manual 3 .8 Enable or Disable Agitation Motion Default is enabled. Agitation reduces thaw time. It is controlled with the switch located at the rear of thawer. For DH4 and DH8, top and bottom switches control right and left basket agitation, respectively.
Helmer Scientific Plasma Thawing System Operation Manual Temperature Monitor Setpoints 4 .1 Change the Chamber Temperature Setpoint Note Do not change any other temperature controller parameter unless instructed in this manual or by Helmer Technical Service. The default chamber temperature setpoint is 36.5 °C. If the chamber temperature falls below the setpoint, the temperature controller activates the chamber heater until the setpoint is reached.
Page 14
Helmer Scientific Plasma Thawing System Operation Manual View or change parameter values: Notes • Default High Temperature alarm setpoint is 37.6 °C. • Low Temperature alarm setpoint is disabled by default (setpoint is 0.0 °C). • When setting alarm setpoints, maintain at least a 1.0 °C difference above or below the plasma thawer setpoint.
Helmer Scientific Plasma Thawing System Operation Manual Components 5 .1 Front and Sides Front and left sides (115 V DH4 model shown). Label Description Label Description Fan (DH8 100 V models) Control panel Drain port Cover Drain tube with coupling valve...
Helmer Scientific Plasma Thawing System Operation Manual 5 .2 Control Panel Control panel. Top: DH2 model. Bottom: DH4 and DH8 models. Label Description Label Description Power indicator LED CYCLE START button POWER button Cycle time indicator MUTE button LIFT OUT button...
Helmer Scientific Plasma Thawing System Operation Manual 5 .4 Thawer Basket DH8 basket shown with 2 plasma bags in standard overwraps. Label Description Label Description Basket Basket divider (DH8) Bearing Overwrap bag Security snap 5 .5 Rear Rear of thawer (230 V DH4 model shown with parts from various models).
Helmer Scientific Plasma Thawing System Operation Manual Product Specifications 6 .1 Operating Standards These units are designed to operate under the following environmental conditions: ♦ Indoor use only ♦ Altitude (maximum): 2000 m ♦ Ambient temperature range: 15 ºC to 32 ºC (59 ºF to 90 ºF) ♦...
7 .3 Electromagnetic Compliance The Helmer Scientific Plasma Thawing System meets the applicable requirements of IEC61326 and EN55011 and is intended for use in the electromagnetic environment specified in 6.1 Operating Standards. The customer or the user of these devices should assure they are used in such environment.
Page 20
HELMER SCIENTIFIC 14400 Bergen Boulevard Noblesville, IN 46060 USA PH +1.317.773.9073 FAX +1.317.773.9082 www.helmerinc.com...
Need help?
Do you have a question about the QuickThaw DH2 and is the answer not in the manual?
Questions and answers