ZEKS CFX NC Series Technical Manual Download Page 14

13

SELECT

DISPLAY

Pressing SELECT DISPLAY will increment the display
through the available display parameters.  

Depress “ + / -“ as required to change the DRN INT time
to 5 minutes.

Pressing “ENTER“ saves the set point.

6.5.4 

ADJUSTING SET POINTS
Accessing and manipulating each of the set points in the CUSTOMER MODE is
accomplished as follows. The parameter is selected using the SELECT DISPLAY
button.  After scrolling through the displays, the “Cust Set Points” screen is
displayed.  The parameters after this screen may be adjusted by the user.  Once
the desired parameter is displayed, depressing the “+/-” button changes the set
point.  Once the new set point is displayed, depressing ENTER saves the set point.
Exiting the Customer Set Point routine is accomplished by depressing the SELECT
DISPLAY button until the END CUST SET PTS screen is displayed.   The following
example illustrates the keystrokes required to change the Drain Closed Time from
the default value of 3 Minutes to 5 Minutes:

6.5.3 DRYER SET POINTS AND ALARMS

The DPC™ Controller has several user adjustable set points that are displayed at
the end of the display parameter list.  These set points allow the user to configure
the dryer to operate according to site conditions.  The controller is shipped from the
factory with each parameter having its own default value.  The following chart
summarizes the parameters that may be adjusted by the user:

Display 

Parameter 

SETPOINT

Description

Range

HeatSink

NonCycle

Drain Interval Time

DRN INT

3, 5, 10, 15, 20, 30, 60 min

3 MIN

3 MIN

Drain On Time

DRN ON

3, 5, 7, 10, 12, 15 , 20, 30 sec.

10 SEC

10 SEC

Chiller Off Temperature

CHLLR TEMP

32°F - 50°F; 1 °F increments

34°F

INACTIVE

Factory Setpoint

ENTER

DRN INT:  5 min

SELECT

DISPLAY

Press SELECT DISPLAY as necessary to display the End
Customer Set points Screen.

End Cust Set Pts

DRN INT:  5 min 

+

-

CHLLR TEMP:  36

SELECT

DISPLAY

Continue pressing SELECT DISPLAY until the Customer
Set point screen is displayed.  The parameters that follow
are the User Adjustable Parameters for the controller.

Cust Set Points

SELECT

DISPLAY

Press SELECT DISPLAY until “DRN INT” is displayed.

DRN INT:  3 min 

SELECT

DISPLAY

Press SELECT DISPLAY as necessary to return the DPC
to the desired display parameter.

CHLLR TEMP:  36

Summary of Contents for CFX NC Series

Page 1: ...16 8 SCHEDULED MAINTENANCE 19 9 TECHNICAIN MODE 22 10 TROUBLESHOOTING 25 11 WIRING DIAGRAMS 27 12 GENERAL ARRANGEMENT 31 13 PARTS IDENTIFICATION 32 14 ENGINEERING SPECIFICATIONS 35 ZEKS Compressed Ai...

Page 2: ...e Warranty Registration Card may be completed online at www zeks com The total warranty period cannot exceed 18 months from the original date of shipment from the factory Equipment must be installed a...

Page 3: ...of all other warranties There are no other warranties expressed or implied except as stated herein There are no implied warranties of merchantability or fitness for a particular purpose which are spe...

Page 4: ...uld any person attempt to lift heavy objects without proper lifting equipment i e crane hoist slings or fork truck Lifting any unit without proper lifting equipment may cause serious injury To facilit...

Page 5: ...erate the dryer at pressures in excess of its rating 8 Do not operate the dryer without guards shields and screen in place 9 Inspect unit daily to observe and correct any unsafe operating conditions T...

Page 6: ...trainer la mort Ne pas exc der le taux de pression Rel cher la pression avant la mise en service de l appareil Ne pas modifier r parer ou retravailler Le taux de pression des vaisseaux est conforme au...

Page 7: ...cation See Attached Terminal Connection Diagram Be Certain To Follow All NEC State Local and Other Applicable Codes During Installation Label Group 2 Page 1 of 2 File ZEKSLABELGROUP2 1 LA BO TE DE CON...

Page 8: ...hot saturated air from the compressor enters the precooler reheater where the air temperature is reduced prior to entering the chiller by the cool air exiting the air moisture separator This precoolin...

Page 9: ...uency is required A longer valve off time may be used during the winter months when moisture levels are lower 6 4 REFRIGERATION SYSTEM The Refrigeration System consists of all the components which han...

Page 10: ...ted 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 A protecte...

Page 11: ...ose at 270 psig The DPC controller includes a digital readout for monitoring the discharge pressure of the refrigerant gas exiting the compressor This reading will vary depending upon condenser type a...

Page 12: ...isplayed as the default display Allows user to increase set point values Set point values cycle through a fixed range Also allows entering negative numbers in FACTORY MODE TEST Allows user to manually...

Page 13: ...tion pressure in psig of the refrig eration system DPC Plus Only Inlet Air Pressure and Temperature P AIR IN T AIR IN Displays the tempera ture in F and pressure in psig of the inlet compressed air DP...

Page 14: ...DPC Controller has several user adjustable set points that are displayed at the end of the display parameter list These set points allow the user to configure the dryer to operate according to site co...

Page 15: ...Note that this alarm will shut down the dryer after a response time delay This alarm will reset automatically once the alarm condition is rectified HIGH PRESSURE CUTOUT ALARM HI PRESS CO If the disch...

Page 16: ...followed by the PRESS ON BUTTON display After the ASC delay has timed out the dryer will only start once the ON button is depressed In this configuration to restart the dryer the user must manually d...

Page 17: ...ended Prefilters and afterfilters sized to your drying application can be provided by ZEKS and are available factory installed Call your local distributor to select the filter that best suits your fil...

Page 18: ...and appropriate Wiring Diagrams A suitable fused disconnect switch or circuit breaker in accordance with national and local code requirements is recommended for all ZEKS equipment Refer to the Enginee...

Page 19: ...Y using the SET button enables this mode of operation Note that the dryer s touch pad will still affect dryer operation Depressing the OFF button will de energize the refrigeration compressor and all...

Page 20: ...equired Remote Automatic Mode Close the remote contact For NonCycle dryers after the initial delay has timed out the compressor is energized The suction pressure gauge will typically pull down between...

Page 21: ...the valve is depressurized Carefully remove the Strainer End Cap and remove the Strainer Clean the Strainer and remove any debris that is evident in the valve Replace the Strainer and reinstall the S...

Page 22: ...ilure to the seals will occur Be especially careful to clean the center brass orifice and the rubber gasket orifice on the orifice cup with a straight pin Reassemble all drain components after the dra...

Page 23: ...hours AUTO RESTART ENABLE AUTO RESTART N or Y Parameter Display Set Point OPERATING MODE OP MODE HS or NC REFRIGERANT REFRIG 22 or 404 or 407 CONDENSER TYPE COND AC OR WC OPERATING TEMPERATURE DIFFER...

Page 24: ...arameter for the Auto Restart feature AUTO RESTART N SELECT DISPLAY The DRAIN ENABLE parameter determines whether the DPC shall control an electronic solenoid drain valve A value of ON will permit the...

Page 25: ...M LIST screen at the top of the ALARM LIST BEGIN ALARM LIST SELECT DISPLAY The Alarm List will repeat as long as the SELECT DISPLAY button is depressed To EXIT the ALARM LIST perform the following Dep...

Page 26: ...DRAIN TEST contact distributor Check inlet and outlet pressures and system design capacity Correct cause of excessive flow Close by pass valve Check power supply and fuses circuit breakers Check and...

Page 27: ...nd outlet filters blocked up Compressor relay contactor stuck DPC relay bad Probe not completely in thermal well Problem persists CORRECTIVE ACTION Check Chiller Temperature Check MAIN CONTROL fuse Co...

Page 28: ...27 11 WIRING DIAGRAMS...

Page 29: ...28...

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Page 32: ...31 12 GENERAL ARRANGEMENT...

Page 33: ...NCE 700 NCE 800 NCE 1 Exchanger Assy 748065 748069 748056 748056 2 Solenoid Drain Valve 682657 682657 682657 682657 3 Drain Valve Repair Kit 683006 683006 683006 683006 4 Filter Stop 682438 682438 682...

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