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Dehumidifying Dryers Chapter 2: Functional Description 13 of 59
• NFPA79 machinery electrical standards
• Non-fused electrical disconnect
• Branch fusing
• Mercury process heater contactor
• Regeneration temperature control
• Process high temperature alarm light
• Process/regeneration heater box
• High temperature safety system (Process/Regeneration)
• Dew point monitor with digital read-out
Controller Features
• Mitsubishi programmable relay controller
• Display of process temperature set point and actual settings
2-4 Options
Options marked with “*” indicate options that can be factory installed or retrofitted in the
field.
* Process temperature 180ºF to 400˚ F, including aftercooler inside dryer
and silicone insulated delivery hose.
* Process temperature 120˚ F to 250˚ F, includes precooler on back of dryer.
* If the dryer is a central dry air generator, it will not have a process heater
box.
* Plasticizer trap (with cooling coil) in lieu of optional aftercooler (mounts
outside on back of dryer).
* Machine mount adapter to accommodate a dryer and corresponding
hopper.
* Drawer magnet, stainless steel construction.
* Casters, two (2) fixed and two (2) swivel.
* Cart with caster with hopper mounting place.
* Redundant high temp safety control.
* Audible alarm
* Insulated air hose for air delivery
2-5 Safety Devices and Interlocks
This section includes information on safety devices and procedures that are inherent to the
Dryer. This manual is not intended to supersede or alter safety standards established by the
user of this equipment. Instead, the material contained in this section is recommended to
supplement these procedures in order to provide a safer working environment.
At the completion of this section, the operator and maintenance personnel will be able to do
the following: