ZEKS 1000HSFA400, Техническое руководство

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6.6 CONTROLS
ZEKS’ 1000-1600HSF Refrigerated Compressed Air Dryers are equipped with the
Digital Performance Controller (DPC™). This advanced microprocessor-based
controller has been engineered by ZEKS exclusively for use with ZEKS’ Compressed
Air Dryers.
The DPC™ cycles the refrigeration system based on the dryer's Chiller Temperature.
A temperature sensor samples the thermal mass temperature as it enters the chiller
exchanger. The Chiller Temperature Set point is a user adjustable set point that is
used to set the Refrigeration Compressor Off temperature. Once the Chiller
Temperature has fallen below the Chiller Temperature Set point, the refrigeration
compressor will de-energize. The Operating Temperature Differential is factory set at
4°F above the Chiller Temperature Set point. Therefore, if a user adjusts the Chiller
Temperature at 36°F, the Refrigeration Compressor On temperature will be 40°F.
In addition to the operation of the HeatSink™ dryers as described above, the DPC™
permits monitoring of dryer parameters and enunciation of alarm conditions.
The list below summarize the features the DPC™:
• 2 X 16 Character Backlit LCD Display - Easy-to-read display provides continuous
indication of dryer default parameter. Standard backlight permits viewing of critical
information in low light environments.
• Electronic Drain with On/Off Time Adjustment: Included with DPC™-equipped
HeatSink™ and NonCycle dryers is a solenoid drain valve. Control of the open and
close time of the valve is set via the DPC™ Controller.
• Remote Start / Stop: DPC™-equipped dryers offer a unique remote start / stop
feature. This feature allows the dryer to be operated via a remote user-supplied
switch.
• Remote Alarm Contact: DPC™-equipped dryers include a remote alarm contact to
provide indication of any of the dryers alarms described later in this manual.
Contact rated for 2A / 120V max.
The DPC™ Controller features three levels of access. The default level CUSTOMER
MODE permits adjustment of dryer parameters to address seasonal variations for
drain timing and pressure dew point temperature. A protected TECHNICIAN MODE
permits access to and manipulation of additional parameters to address the initial
machine set up. A password protected FACTORY MODE is also included for use with
ZEKS Service Personnel for troubleshooting the dryer.
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