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DEB SERIES DESICCANT

COMPRESSED AIR DRYERS

MODELS: DEB0525, DEB0775, DEB1050, DEB1300, DEB1575, DEB1825,

DEB2100, DEB2625, DEB3150, DEB3675, DEB4200, DEB4725, DEB5250, DEB5800

INSTRUCTION MANUAL

SERVICE DEPARTMENT: (724) 746-1100

Contents

1.0  GENERAL INFORMATION ...................................

1

2.0  EQUIPMENT FUNCTION ....................................

2

3.0  INSTALLATION ...................................................

3

4.0  OPERATION .......................................................

5

5.0  TROUBLESHOOTING GUIDE ............................... 14
6.0  MAINTENANCE ................................................. 19
WARRANTY .............................................................. 20

1.0  General Information

1.1  General Safety Information

A. Pressurized Device

This equipment is a pressure containing device.  Do
not exceed maximum operating pressure as shown
on equipment serial number tag.  Depressurize
equipment before working on or disassembling it for
servicing.

B. Electrical

This equipment requires electricity to operate.  Install
equipment in compliance with national and local
electrical codes.  Equipment supplied as standard is
not intended for installation in hazardous environ-
ments.  Disconnect power supply to equipment when
performing any electrical service work.

C. Breathing Air

Air treated by this equipment may not be suitable for
breathing without further purification.  Refer to OSHA
standard 1910.134 for the requirements for breath-
ing quality air.

D. Hot Surfaces

Certain parts of the dryer (the lower purge piping,
the outlet piping, vessel weld caps, etc.) are not
insulated and they may become hot during normal
operation of the dryer.  Do not touch any of these
areas without first determining the surface tempera-
ture.

7610.460.3    Rev. A   10/02

18-3-610    2

nd

 Edition

Internal Use Only

460-1A / 021044

Summary of Contents for DEB Series

Page 1: ...vicing B Electrical This equipment requires electricity to operate Install equipment in compliance with national and local electrical codes Equipment supplied as standard is not intended for installat...

Page 2: ...alternated on and off line so that dry desiccant is always in contact with the wet com pressed air resulting in a continuous supply of dry air downstream The switching from one tower to the other is...

Page 3: ...perature and capable of removing all desiccant fines 1 micron and larger should be provided The use of bypass valves and piping allows servicing of the filters and or dryer without interrupting the ai...

Page 4: ...Valve Purge Exhaust Left Purge Valve Left Purge Pilot Valve Left Inlet Valve Left Inlet Pilot Valve Purge Exhaust Muffler Right Depressurization Valve Temperature Gauge Back Front Air Inlet Left Depr...

Page 5: ...s returned to normal operation auto stop disabled the dryer will return to demand cycle operation Auto stop is enabled or disabled through the opera tor interface The dryer can be returned to normal o...

Page 6: ...the right tower and exits through the right purge valve V4 The blower intake air is filtered F1 to keep dust and dirt from entering the dryer The blower B1 and heater H1 are de energized when the temp...

Page 7: ...The pressure in the right tower begins to rise and check valve V10 is seated Next the repressurization valve V15 is closed and the depressurization valve V6 is opened depressurizing the tower Finally...

Page 8: ...all times 4 The F4 key performs three different functions as described in Menu s 3 4 and 5 The F4 key is only active when one of these menus is displayed 5 Use the UP ARROW and DOWN ARROW triangular...

Page 9: ...4 to identify the active alarm s Then refer to the Troubleshooting Guide Section 5 0 for help in correcting the alarm condition After correcting an alarm condition use the F1 key on the operator inte...

Page 10: ...ized Q1 0 9SOL Repressurization pilot valve When the solenoid is energized pilot air opens the repressurization valve when de energized pilot air closes the repressurization valve Q1 1 M Blower motor...

Page 11: ...3 PLC Inputs Left Tower Drying and Outputs Step Number I O No Device L00 L01 L02 L03 L04 L05 L06 L07 L08 L09 L10 L11 L12 L13 L14 L15 I0 0 LPS I0 1 RPS I0 2 BPS I0 3 HHC I0 4 LTS I0 5 RTS I0 6 DPM I0 7...

Page 12: ...r I O No Device L00 L01 L02 L03 L04 L05 L06 L07 L08 L09 L10 L11 L12 L13 L14 L15 I0 0 LPS I0 1 RPS I0 2 BPS I0 3 HHC I0 4 LTS I0 5 RTS I0 6 DPM I0 7 Jumper 1 I1 0 Jumper 2 I1 1 I1 5 Not Used Q0 0 1 SOL...

Page 13: ...valve to on line tower L01 R01 0 5 0 5 Close inlet valve to off line tower L02 R02 4 0 4 0 Depressurize off line tower L03 R03 0 5 0 5 Examine off line tower pressure switch L04 R04 0 5 0 5 Open purg...

Page 14: ...exhaust piping indicating valve is not completely closed Check for loss of pilot air see Section 5 1 4 Check for left purge pilot valve V13 failure check valve operation Repair or replace as necessar...

Page 15: ...eration cycle 1 False alarm Heater hi limit thermocouple check thermocouple circuit for continuity Repair or replace as necessary Heater hi limit controller TC2 or TC4 malfunction check controller ope...

Page 16: ...upply Check compressor supplying dryer 2 Excessive air demand Check equipment downstream of dryer 3 Faulty right tower pressure Check pressure switch operation using right tower pressure gauge switch...

Page 17: ...clean or replace 2 Improper setting on blower pressure Check pressure switch operation Readjust switch setting or replace switch PS3 switch if defective 3 Loss of pressure to blower pressure Check lin...

Page 18: ...ee Section 5 9 3 2 Right purge valve V4 failed to close See Section 5 9 5 3 Right depressurization valve V6 See Section 5 9 6 failed to close 4 Repressurization valve V15 failed Loss of pilot air see...

Page 19: ...motor instruction tag 6 3 Blower Pressure Switch The blower pressure switch located in the main electrical enclosure is adjustable Verify that the switch is open when the blower is off and closed whe...

Page 20: ...ages liability of the manufacturer is the original purchase price of the product or part THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER WRITTEN ORAL OR STATU TORY AND...

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