Dryer Options
Closed Loop Loader Options
Alarm Light Color Codes
Water After-Cooler (Heat Exchanger)
for models PD-10 thru PD-13.
Dryer Options
Adjustable Fill Sensor – consists of a proximity sensor that slides (on rails) along a sight glass on the sidewall of the drying hopper. Normally tied into a hopper loader, the sensor can be adjusted up and down to control material levels in the hopper for more or less material. It is also useful to prevent over-drying of materials by matching the hopper capacity to the throughput of the mold.
High Temperature Hose – this option should also be used when drying materials over the 250°F (120°C) level on a continuous basis. It consists of insulation over the hose covered by an outer sleeve to prevent heat loss and improve operator safety.
Low Material Sensor & Light – incorporated with the adjustable fill sensor option, an additional proximity sensor is placed on the adjustable rails. An alarm light will warn you if the material level in the hopper is getting low. It can also be incorporated with the adjustable fill sensor option. Also, can be located in the sidewall of the drying hopper. (orange light)
Magnet Drawer – located under the hopper, this magnet picks up all ferrous metals found in materials, especially regrind, that may ruin your process and/or molding machine screw. Also, easier to clean than hopper magnets.
Water After-Cooler (Heat Exchanger) – this option should be used when drying materials over the 250°F (120°C) level on a continuous basis. If the return temperature is too hot coming back into the desiccant bed, the desiccant will not be as effective in removing moisture. The water after-cooler is located on the return airline and utilizes water from a chiller or tap water. Two ¼” n.p.t. taps are required for installation.
Plasticizer Trap – some materials release volatile byproducts (i.e. – oils) when being dried. It is important to trap these byproducts out of the return air before returning to the desiccant beds. Such byproducts can contaminate the desiccant and filter, thus affecting dewpoint. It’s always used in combination with the watercooled after-cooler option that condenses the byproducts out of the air stream.
Alarm Light – general system alarm, temperature, dewpoint, etc… (red light)
Filter Alarm Light – indicates that the return filter of the dryer is clogged and should be cleaned. (blue light)
PC Interface – Dryer communication via Windows Hyper terminal or NIMTerm monitor and control dryer through a PC
Temperature Setback (ADC Control only) – helps prevent over-drying of materials by monitoring supply and return temperature by use of thermocouples and a time base. If the return temperature gets within so many degrees of the process temperature for a set period of time, the controller will automatically lower the process temperature to help avoid material degradation. This option is important when drying materials that degrade with time and temperature where the molding process may be interrupted for long periods of time.
Ethernet Capability – Dryer can communicate with Dri-Air technicians for programing updates or changes to PID Temperature settings.
Closed Loop Loader Options
Single Bag Filter– Ideal for regrind and dusty materials the single bag filter features blow back on each loading cycle with a ball valve discharge for fine removal
Glass Tube – is primarily needed when drying materials at extremely high temperatures. Also, can replace an existing sight tube that is ‘clouding’ or scratching on the inner surface.
Cleanout Cycle – purges the material line clear of material by cycling the loader blower for a few seconds after the load cycle is complete. Material has a tendency of picking up moisture when sitting in the hose for too long.
Magnet Drawer – located under the CLL receiver, this magnet picks up all ferrous metals found in materials, especially regrind, that may ruin your process and/or molding machine screw. Also, easier to clean than hopper magnets.
Alarm Light Color Codes
Red – general system alarm
Orange – low material
Blue – filter alarm
White – power of the dryer is on, but not running
Green – power of the dryer is on and running