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through the controller touch keys.
Set Key
- Used to display the set temperature and to display the program function values.
Up Arrow Key
- Used to increase the controller digit values in conjunction with the SET key
and to enter into the program functions in conjunction with the DOWN key.
Down Arrow Key
- Used to decrease the controller digit values in conjunction with the SET
key and to enter into the program functions in conjunction with the UP key.
Heater On Indicator
- This small round light, located next to the digital temperature readout
and labeled "1", will light whenever the controller sends power to the heater. This indicator
will light on and off continuously during normal use.
High Alarm Indicator
- When the controller senses that the chamber temperature has
exceeded the high alarm limit, the High Alarm Indicator, located next to the digital temperature
readout and labeled as "2", will light and the audible alarm will sound. In addition, the baskets
will automatically rise out of the water and the Timing Cycle Indicators will flash. The baskets
will not be able to be lowered back into the water until the water temperature falls below the
High Alarm limit. To change the program settings for the High Alarm refer to the section
entitled "Setting the High Alarm".
Alarm Mute Button
- If the High Alarm system is activated, the audible alarm can be silenced
by depressing the "MUTE" button located between the two Time Set Buttons on the main
control panel. When the MUTE button is pressed the Cycle Time Indicators will flash on and
off. The High Alarm Indicator light will remain on until the alarm condition ceases.
Basket Assembly
- Each coated stainless steel Basket Assembly holds various frozen bags during the
thawing cycle. Metal holding fingers are located at the top of each compartment on the Basket
Assembly to hold the Plasma Overwraps in an upright position. Each Basket Assembly can be
removed by unscrewing the finger knob at the top of the Basket Assembly and carefully lifting the
Basket Assembly out of the chamber. DH8 models have a removable divider that can be taken off of
the Basket Assembly for larger bags requiring more space. Remove the divider by gently squeezing it
and pulling the tabs out of the slots.
Caution:
Raising or lowering the Basket Assemblies by hand can cause mechanical
failure to the internal lift-out system. Only raise or lower the basket assemblies
by use of the control panel touch keys.
Plasma Overwraps
- A box of 250 disposable Plasma Overwraps is included with each new Helmer
Plasma Thawer. The Plasma Overwraps protect frozen plasma against contaminants and help to
isolate a broken plasma bag. A plastic Overwrap Holder is located on the side of the unit to
conveniently hold the Plasma Overwraps for easy access (the Overwrap Holder can be placed on either
side of the DH8 units).
Large plasma Overwraps, part number 400303, are also available from
Helmer for use on DH8 units.
Heating System
- The temperature of the water in the chamber is controlled by a thermostatically-
