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Page 2                                                                                                                                                                                WILKERSON 

OPERATIONS

WHY YOU NEED A WILKERSON
REFRIGERATED AIR DRYER

Untreated compressed air will contain contaminants
such as water, compressor oil, rust, chemical conta-
minants, and bacterial growth.

All of these contaminants will cause corrosion and
product contamination. 

With proper filtration and a Wilkerson refrigerated air
dryer in use, contaminants will be reduced to a harm-
less level.

The end result will be that the equipment which comes
in contact with dry, treated, compressed air will stay
cleaner, will not corrode, and will last longer.

Rejection rates of your end products will drastically
reduce when using dry, treated air in your plant
manufacturing operation.

FIGURE 1: TYPICAL COMPRESSOR ROOM LAYOUT:

1 Air Compressor
2 Shut-off Valve
3 Flex Connector
4 Compressed Air Aftercooler
5 Flex Connector
6 Liquid Separator with

Electric Drain

7 Storage Tank
8 Prefilter
9 Electric Drain Valve

10 Flex Connector
11 Shut-off Valve
12 By-pass Valve
13 Flex Connector
14 Shut-off Valve
15 Afterfilter
16 Refrigerated Air Dryer

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2

3

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7

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9

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Summary of Contents for WRA-0250-2

Page 1: ...N 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 OPERA...

Page 2: ...ation Instructions and Start up Procedure Page 5 Preventive Maintenance Dryer Dimensions and Recommended Wilkerson Air Accessories Page 6 Compressed Air Circuit Page 7 Refrigeration Circuit Page 8 Con...

Page 3: ...t which comes in contact with dry treated compressed air will stay cleaner will not corrode and will last longer Rejection rates of your end products will drastically reduce when using dry treated air...

Page 4: ...quires dirt and oil free air then appropriate particulate or coalescing filtration is required Electric Drains 9 Proper drainage of accumulated liquids is essential to proper system operation Should l...

Page 5: ...4 1700 660 WRA 0300 2 300 230 60 1 2 5 12 7 64 14 9 1700 675 WRA 0300 3 300 230 60 3 2 5 7 7 49 9 9 1700 675 WRA 0300 4 300 460 60 3 2 5 3 9 24 5 0 1700 675 WRA 0400 2 400 230 60 1 3 2 17 2 95 19 4 1...

Page 6: ...R Start up Procedure NOTE THE DRYER HAS A REFRIGERANT CRANKCASE HEATER PRIOR TO INITIAL START UP THE CRANKCASE HEATER SHOULD BE ENERGIZED FOR 24 HOURS BEFORE TURNING ON THE DRYER POWER TO THE CRANKCAS...

Page 7: ...remove obstructions as required 5 Check separator receiver filter drains and strainers Check filter high differential pressure indicators and replace fouled elements as needed B Semi Annual Checklist...

Page 8: ...ntaminants are collected in a quiet zone at the bottom of the separator and are discharged through an automatic drain valve Our unique and highly efficient separator design combines centrifugal action...

Page 9: ...liquid refrigerant removes the heat from the compressed air by evaporation The hot gas bypass valve G controls the temperature of the evaporator by sensing low evaporator pressure and injecting hot d...

Page 10: ...eat exchanger surfaces in the aftercooler water or air cooled are the principal cause of high inlet air temperatures to dryer Check air compressor as well Lack of lubrication excessive wear compressor...

Page 11: ...ALL 87 685 000 7 Cover ALL ALL 63 685 000 8 Start Relay 230 60 1 WR 0250 0300 2 87 040 000 Single Phase Units Only 230 60 1 WR 0400 0500 2 87 041 000 9 Start Capacitor 230 60 1 WR 0250 2 87 056 000 Si...

Page 12: ...00 3 Hot Gas By Pass Valve ALL WR 0250 52 021 000 ALL WR 0300 52 021 000 ALL WR 0400 52 024 000 ALL WR 0500 52 024 000 REFRIGERATION COMPONENTS Item Description Voltage Model Number Part Number 4 Filt...

Page 13: ...embly ALL 14 138 000 2 Panel Back ALL 63 673 000 3 Panel Exhaust ALL 63 674 000 ALL WATER COOLED 63 091 000 4 Panel Inlet ALL AIR COOLED 63 672 000 5 Panel Front Left ALL 63 774 000 6 Panel Front Lowe...

Page 14: ...WILKERSON OPERATIONS Page 13 Wiring Diagram Air...

Page 15: ...Page 14 WILKERSON OPERATIONS Wiring Diagram Air...

Page 16: ...Residual liquid water in piping D Drain all drop legs and system points and allow time for dry air to purge system Problem Caused By Corrective Action III Liquid water in compressed air system caused...

Page 17: ...ct way to file a warranty claim The following Warranty Procedure clearly outlines the obligations of Wilkerson Corporation and the procedure to be followed when processing a warranty claim WILKERSON R...

Page 18: ...PRESSURES Inlet air temperature ___________________ F C Outlet air temperature _____________________ F C Inlet air pressure___________________psig bar Outlet air pressure _____________________psig bar...

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