Wilkerson WRA-0250-2 Owner's/Operator's Manual

Refrigerated compressed air dryer air-cooled water-cooled components, installation, operation and service instructions

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WARNING
READ ALL INFORMATION IN THIS MANUAL BEFORE BEGINNING
INSTALLATION OR OPERATION OF THE DRYER. BEFORE STARTING
INSTALLATION AND/OR MAINTENANCE PROCEDURES, TURN OFF
THE MAIN POWER TO THE DRYER AND COMPLETELY
DEPRESSURIZE THE UNIT TO PREVENT PERSONAL INJURY.
DO NOT REMOVE, REPAIR, OR REPLACE ANY ITEM ON THIS DRYER
WHILE IT IS UNDER PRESSURE.
THIS DRYER USES REFRIGERANT R-22. COMPLY WITH ALL LOCAL,
STATE, AND FEDERAL REGULATIONS CONCERNING REFRIGERANT
WHEN PERFORMING ANY MAINTENANCE OR SERVICE ON THE
REFRIGERATION SYSTEM. ALL REFRIGERATION SYSTEM REPAIRS
OR MAINTENANCE NOT DETAILED IN THIS MANUAL SHOULD BE
DONE BY A QUALIFIED REPAIR PERSON.
NEVER OPERATE THIS DRYER ABOVE THE RATED OPERATING
CONDITIONS. OPERATION ABOVE SPECIFIED CONDITIONS WILL
RESULT IN DECREASED PERFORMANCE, POSSIBLE DAMAGE TO
THE UNIT AND/OR PERSONAL INJURY.
OWNER/OPERATOR MANUAL
COMPONENTS, INSTALLATION, OPERATION
REFRIGERATED COMPRESSED AIR DRYER
AND SERVICE INSTRUCTIONS
WRA 0250-WRA 0500
WRW 0250-WRW 0500
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For further assistance contact:
®
R
WILKERSON OPERATIONS
REGISTERED TO ISO 9001
CERTIFICATE NO. A2192
83-030-000-FL • Rev. A • 9/95
OPERATIONS
P.O. Box 1237
1201 W. Mansfield Ave.
Englewood, CO 80150
Phone (269) 629-2550
FAX (269) 629-2475
BSI
NATIONAL
ACCREDITATION
OF CERTIFICATION
BODIES
FM21121
Certificate No
Printed in the U.S.A.
®

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Summary of Contents for Wilkerson WRA-0250-2

  • Page 1 NATIONAL OR MAINTENANCE NOT DETAILED IN THIS MANUAL SHOULD BE ACCREDITATION OF CERTIFICATION DONE BY A QUALIFIED REPAIR PERSON. BODIES WILKERSON OPERATIONS REGISTERED TO ISO 9001 NEVER OPERATE THIS DRYER ABOVE THE RATED OPERATING FM21121 CERTIFICATE NO. A2192 Certificate No CONDITIONS.
  • Page 2: Table Of Contents

    Table of Contents Why you need a Wilkerson Dryer and recommended Typical Installation ....Page 2 Components of a Refrigerated Dryer Compressed Air System ........Page 3 Dryer Performance Specifications...................Page 4 Installation Instructions and Start-up Procedure ............Page 5 Preventive Maintenance, Dryer Dimensions and Recommended Wilkerson Air Accessories ..............Page 6...
  • Page 3: Why You Need A Wilkerson Dryer And Recommended Typical Installation

    Rejection rates of your end products will drastically product contamination. reduce when using dry, treated air in your plant manufacturing operation. With proper filtration and a Wilkerson refrigerated air dryer in use, contaminants will be reduced to a harm- less level. FIGURE 1: TYPICAL COMPRESSOR ROOM LAYOUT:...
  • Page 4: Components Of A Refrigerated Dryer Compressed Air System

    A difference of only a few percent efficiency in a The Refrigerated Air Dryer 16 separator can allow substantial amounts of additional water The Wilkerson Refrigerated Air Dryer is the result of to pass downstream, both overloading a dryer and causing unprecedented research and testing. It is subjected to potential maintenance problems.
  • Page 5: Dryer Performance Specifications

    Air-Cooled Performance Specifications (60 Hz) System COMPRESSOR DATA Full Model SCFM Load Number Flow Voltage Full Load Amps Amps Shipping WRA-0250-2 230/60/1 12.1 1700 WRA-0250-3 230/60/3 1700 WRA-0250-4 460/60/3 1700 WRA-0300-2 230/60/1 12.7 14.9 1700 WRA-0300-3 230/60/3 1700 WRA-0300-4 460/60/3...
  • Page 6: Installation Instructions And Start-Up Procedure

    MAXIMUM INLET AIR PRESSURES: 200 PSIG MAXIMUM AMBIENT AIR TEMPERATURE: 110° F MAXIMUM INLET WATER COOLED CONDENSER TEMPERATURE: 80° F Water Flow Requirements at Various Water Temperatures Gallons per hour at the following temperatures 60°F 70°F 80°F WRW-0250 WRW-0300 WRW-0400 WRW-0500 WILKERSON OPERATIONS Page 5...
  • Page 7: Recommended Wilkerson Air Accessories

    AIR OUTLET AIR INLET (WATER CONNECTIONS 67.88 FOR WRW ONLY) 60.75 NPT (FEMALE) 54.75 1/4" NPT DRAIN WATER INLET LOCATIONS NPT (FEMALE) POWER CORD WATER OUTLET ACCESS 10.38 9.36 7.88 6.50 5.06 7.56 10.25 12.87 25.25 29.62 Page 6 WILKERSON OPERATIONS...
  • Page 8: Compressed Air Circuit

    “quiet zone” at the bottom of system piping. AIR TO AIR AND EVAPORATOR FLOW SCHEMATIC REFRIGERANT IN REFRIGERANT OUT Air Outlet EVAPORATOR Air Inlet “B” REFRIGERATION EVAPORATOR COIL WATER SEPARATOR “C” AIR TO AIR HEAT EXCHANGER “A” X17 Drain WILKERSON OPERATIONS Page 7...
  • Page 9: Refrigeration Circuit

    (“F”), which regulate the flow of refrigerant into the evaporator (“B”). The liquid refrigerant removes the heat from the LIQUID LINE HEAT EXCHANGER SUCTION ACCUMULATOR EXTERNAL BULB EQUALIZER LINE COMPRESSOR FILTER DRYER DISCHARGE SUCTION AIR FLOW EXPANSION HOT GAS EVAPORATOR CONDENSER BY-PASS VALVE VALVE Page 8 WILKERSON OPERATIONS...
  • Page 10: Control Panel Components

    If high ambient temperature is the problem, immediately begin to cool dryer area with ventilating fans, open windows, louvers, etc. Sustained high temperatures will damage dryer. WILKERSON OPERATIONS Page 9...
  • Page 11: Electrical Box Components

    230/60/1 WR ( )-0400-2 87-036-000 230/60/1 WR ( )-0500-2 87-036-000 Run Capacitor 230/60/1 WR ( )-0250-2 87-039-000 (Single Phase Units Only) 230/60/1 WR ( )-0300-2 87-614-000 230/60/1 WR ( )-0400-2 87-039-000 230/60/1 WR ( )-0500-2 87-074-000 Page 10 WILKERSON OPERATIONS...
  • Page 12: Refrigeration Components

    WRW-0400 59-100-000 Hot Gas By-Pass Valve WR ( )-0250 52-021-000 WRW-0500 59-101-000 WR ( )-0300 52-021-000 WR ( )-0400 52-024-000 Water Control Valve — ALL WRW 52-060-000 WR ( )-0500 52-024-000 Refrigerant Service Valve — 52-090-000 WILKERSON OPERATIONS Page 11...
  • Page 13: Cabinet Components

    Model Number Part Number Frame Assembly 14-138-000 Panel, Back 63-673-000 Panel, Exhaust 63-674-000 ALL WATER-COOLED 63-091-000 Panel, Inlet ALL AIR-COOLED 63-672-000 Panel, Front Left 63-774-000 Panel, Front, Lower Right 63-709-000 Panel, Front, Top Right 63-050-000 63-669-000 Page 12 WILKERSON OPERATIONS...
  • Page 14: Wiring Diagrams

    Wiring Diagram-Air WILKERSON OPERATIONS Page 13...
  • Page 15 Wiring Diagram-Air Page 14 WILKERSON OPERATIONS...
  • Page 16: Trouble Shooting Guide

    4. Residual liquid water in piping D. Drain all drop legs and is off. system points and allow time for 3. Erroneous reading all channels E. Replace display board. dry air to purge system. WILKERSON OPERATIONS Page 15...
  • Page 17: Dryer Warranty

    Wilkerson's written recommendations and specification for a period of one year from the date of shipment from the factory (refrigerated dryers are warranted for 2 years). Wilkerson's obligation under this warrant is limited to, and the sole remedy for any such defect shall be, the repair or replacement (at Wilkerson's option) of unaltered products returned to Wilkerson and proven to have such defect, provided such defect is promptly reported to Wilkerson within said one-year period.
  • Page 18: Service Information

    What is H.P. of compressor? __________________ What is the air flow? _______________scfm (Nm C. AMBIENT CONDITIONS AT DRYER INSTALLATION What is the ambient air temperature? _____________°F (°C) Is ambient air at dryer installation dusty? ____________ Has condenser been cleaned recently? ___________ WILKERSON OPERATIONS Page 17...

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