Ross Controls Automatic Valve A04 Series Service Instructions

SAE 125
Operating/Service Instructions
Thank You!
service life. Before you service your valve, please read the information in this document completely, and save it for future reference.
A general user manual with more detailed information is available online, visit AV's website at www.automaticvalve.com.
Please read and make sure you understand all instructions before proceeding with the service.
If you have any questions about installation or servicing your product, please contact AUTOMATIC VALVE or your authorized AV
distributor, see contact information listed at the back of this document, or visit www.automaticvalve.com.
+
= Items that Must Be Lubricated
Pneumatic equipment should be serviced only by persons trained and experienced in pneumatic products.
Turn off the electrical supply to the valve. Shut off and exhaust the air supply.
1. Follow appropriate lock-out/tag-out procedures. Do not attempt to service a valve, if you are not familiar with lock-out/tag-out procedures.
+ PISTON SEAL
2. Turn off electrical power to the valve.
3. Remove valve from all electrical and air power sources.
4. Ensure all stored air power is exhausted.
5. Remove coil by first removing coil pretention nut.
6. Remove operator cap by first removing 4 socket head cap screws.
7. Remove existing serviceable components by "pushing" internal components gently out of the valve body.
8. Clean the spool with a clean cloth.
9. Discard the spring (Single Spring Return models only).
10. Lubricate the designated
lubricant visible.
11. Replace components as shown above.
11.1 Replace spring pad (where required) & spring (Single Spring Return Models Only).
11.2 Alternate Tee-seals and spacers.
11.3 Once all 6 Tee-seals are installed, replace the retainer, bushing & piston, and spool.
12. Orientate the operator cap by aligning the open end of the gasket with the pilot hole in the valve body. (For external pilot, this hole is
covered; see Field Conversion on page 3.)
13. Torque cap screws into body to 1,02 N-m (9 in-lbs) ±10%. Alternate tightening of the screws, so cap "squeezes" evenly onto body.
Air Line Lubrication
of AUTOMATIC VALVE products is not required, but is recommended to maximize service life. Oils should be
compatible with seal material, have an ISO 32 or lighter viscosity, and have an aniline point between 82
Series Valve Type
Single K-A04-SGL
A04
Double K-A04-DBL
AUTOMATIC VALVE INDUSTRIAL
Spool Valves – A04 Series
You have purchased a premium-quality AV pneumatic valve. It is a high quality SAE spool valve,
designed for ease of installation and maintenance.
With care in its installation and maintenance you can expect it to have a long and economical
SERVICE INFORMATION
Service Kit Installation Instructions
+ TEE-SEALS (6)
+ PISTON SEAL
COIL
COIL RETENTION NUT
+ TEE-SEALS (6)
+ SPOOL
CAP SCREW 1/4-20
TORQUE TO 6,7 N-M (59 IN-LBS) ±10%
items in above assembly drawing with a thin film of lubricant - the item should look "WET" with no excess
" + "
Kit Model Number
Buna-N Fluoroelastomer
K-A04-SGL-A
K-A04-DBL-A
+ SPOOL
SPRING PAD
SPRING
CAP RETAINED WITH
M3 SCREWS
TORQUE 1,2 N-M (9 IN-LBS) ±10%
Contents
Tee-Seals Gasket Piston Seal
6 1 1
6 1 2
GASKET
HOUSING SCREWS #10-24
TORQUE TO 42 IN LBS ±10%
HOUSING GASKET
BODY TO BASE GASKET
BODY TO BASE SCREWS 5/16-18
TORQUE TO 13,7 N-M (121 IN-LBS) ±10%
C (180 F) and 99 C (210
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Spring
1
–
www.automaticvalve.com
SPRING
F).
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