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ATTENTION: READ CAREFULLY BEFORE ATTEMPTING TO INSTALL
OR SERVICE THE WILKERSON AUTOMATIC DRAIN VALVE! RETAIN
THIS SHEET FOR FUTURE REFERENCE.
PRODUCT DESCRIPTION AND OPERATION
Your Wilkerson Model X51 automatically drains liquid water and oil from
compressed air receivers and systems. This drain valve automatically opens
and shuts (fires) every time the system pressure decays approximately 10 to
20 psig (0.7 to 1.4 bar) during the compressor cycle. It is recommended that
the compressor cycle is set greater than 20 psig (1.4 bar) to insure firing of the
valve.
Maximum Pressure ...................................................... 200 psig (13.5 bar)
Temperature Range .................................... 32°F to 150°F (0°C to 65.5°C)
Minimum Differential Pressure Required ....................... 20 psig (1.4 bar)
Weight ............................................................................... 0.8 lbs (0.35 kg)
Height ......................................................................... 3.75 inches (95 mm)
Inlet/Outlet Ports ...................................................................... 1/4 NPT (F)
Screen Adapter ............................................................... 3/8 NPT (M) inlet,
1/4 NPT (M) outlet
INSTALLATION
Automatic Compressor Drain
1. Do not install until you have read this entire Installation and
Maintenance sheet.
2. Locate the lowest point in the receiver tank or system that has
unregulated pressure. Do not install on a regulated pressure line or unit
will not operate.
3. CAUTION: Prior to installation, make sure the system where the
valve is to be installed is depressurized to 0 psig (0.0 bar).
4. Installation of a manual 3-way shut-off valve between the receiver and
drain valve is strongly recommended.
5. For optimal operation, it is recommended to install drain in the remote air
pilot configuration. (See Figure 5)
6. Prepare the drain tap on the receiver tank prior to installation by draining
all water in the system. Blow down the line with the manual drain to
remove all loose foreign material, rust and pipe scale.
7. Install the screen adapter in the inlet of the valve (Figure 3)
and connect the outlet of the receiver to the 3/8' NPT end of the adapter.
8. Mount the unit with the bonnet portion of the valve up and locate the
drain valve as low as possible as shown. (Figure 1)
9. Installation of a “Y” strainer ahead of the valve is recommended so
system can be blown down occasionally to eliminate solid particles and
insure trouble-free operation.
10. If it is desired to pipe the condensation to a remote sewer drain, locate
automatic drain valve at the sewer drain and run pipe to the valve. Do not
run more than 10 feet of pipe from outlet of valve to sewer drain.
MAINTENANCE
1. To ensure trouble-free operation, the valve should be disassembled,
cleaned, and inspected twice a year.
2. CAUTION: Prior to attempting to service the unit in any way
depressurize the air line to the valve.
3. Remove the bottom plug and inspect the main and pilot valve for
contamination or wear. Remove the four screws that attach the bonnet to
the valve body. Pull the piston out and inspect O-rings and bores for
contamination or wear. Remove the check ball cap from the piston and
inspect check ball and seat for contamination. If any wear is noted, order
the maintenance kit, XRP-95-511.
Refer to Figure 4 for steps 4, 5, and 6.
4. To reassemble, clean all parts and lubricate O-rings using Parker O-Lube
or equivalent.
5. Install the pilot valve and pilot spring into the main valve. Next install the
main valve and main valve spring into the body and reinstall the bottom
plug. Torque to 1.5-2.0 ft-lb (2.0-2.7-N-M).
6. To reassemble the top portion of the valve, slip the lubricated piston into the
top of the body and install the check valve pin into the center of the piston.
CAUTION: IF CHECK VALVE PIN IS NOT INSTALLED, THE VALVE
WILL NOT RESET AND SYSTEM WILL LOSE PRESSURE.
Next, install the check ball and spring into cap and snap the check valve
cap onto the piston boss. Set piston spring on the piston and reinstall the
bonnet with the four screws. Torque 2.5-3.0 ft-lb (3.4-4.0 N-M).
7. Reinstall the drain valve in the system, repressurize the system, and
verify correct operation.
REPAIR KITS AND REPLACEMENT PARTS
Maintenance Kit ..................................................................... XRP-95-511
Piston .................................................................................... XRP-95-512
WARNING
Automatic Air Compressor Drain Kit
To avoid unpredictable system behavior that can cause personal injury
and property damage:
•
Disconnect electrical supply (when necessary) before installation,
servicing, or conversion.
•
Disconnect air supply and depressurize all air lines connected to
this product before installation, servicing, or conversion.
•
Operate within the manufacturer’s specified pressure, temperature,
and other conditions listed in these instructions.
•
Medium must be moisture-free if ambient temperature is below
freezing.
•
Automatic Compressor Drain Kit User Manual Diagram
Service according to procedures listed in these instructions.
•
Installation, service, and conversion of these products must be
performed by knowledgeable personnel who understand how
pneumatic products are to be applied.
•
After installation, servicing, or conversion, air and electrical supplies
(when necessary) should be connected and the product tested for
proper function and leakage. If audible leakage is present, or the
product does not operate properly, do not put into use.
•
Warnings and specifications on the product should not be covered
by paint, etc. If masking is not possible, contact your local
representative for replacement labels.
!
WARNING
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE
PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED
ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY
DAMAGE.
This document and other information from The Company, its subsidiaries
and authorized distributors provide product and/or system options for further
investigation by users having technical expertise. It is important that you
analyze all aspects of your application, including consequences of any
failure and review the information concerning the product or systems in the
current product catalog. Due to the variety of operating conditions and
applications for these products or systems, the user, through its own
analysis and testing, is solely responsible for making the final selection of
the products and systems and assuring that all performance, safety and
warning requirements of the application are met.
The products described herein, including without limitation, product features,
specifications, designs, availability and pricing, are subject to change by
The Company and its subsidiaries at any time without notice.
Automatic Compressor Drain Kit User Manual Instructions
EXTRA COPIES OF THESE INSTRUCTIONS ARE AVAILABLE FOR
INCLUSION IN EQUIPMENT / MAINTENANCE MANUALS THAT UTILIZE
THESE PRODUCTS. CONTACT YOUR LOCAL REPRESENTATIVE.
!
Richland, MI 49083
Tel: (269) 629-5000
Installation & Service Instructions
83-699-000
Automatic Drain Valve Model X51
ISSUED: May, 2006
Supersedes: February, 2005
Doc. #83-699-000, ECN# 060486, Rev. 4
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