Valve Installation & Service Manual - ROSS EUROPA - #5

Cleaning the Valve. If the air supplied to the valve has not been well filtered, the interior of the valve may accumulate dirt and varnish which can affect the valve's performance. Although ROSS poppet valves are very tolerant of dirty air, the valve may sometimes need cleaning. To clean the valve use any good commercial solvent or kerosene. Do not use a chlorinated solvent or abrasive materials. The former dam­ages seals, and abrasives can do permanent damage to metal parts. Reassemble the valve with a gasket and seal kit available from ROSS. Lubricate all sliding surfaces with the grease provided in the gasket and seal kit.

Electrical Contacts. In (he electrical circuits associated with the valve solenoids, keep all switches or relay contacts in good condition to avoid solenoid malfunctions.

Replace Worn Components. In most cases it is not neces­sary to remove the valve from its installation for servicing. However, turn off the electrical power to the valve, shut off the air supply, and exhaust the air in the system before be­ginning any disassembly operation. Follow appropriate lock­out/tag-out procedures.

Irouclesl ootmg is me process ol ioo-tmg at a valves syrup-to"s;e g blowing :c exl austor bu^i r so eroiJi. arc II er relating these syn plo - = to tneir most lite y causes By care-fu ly analyzing tie problem, the expenencec trouble shooter can quickly isolate the trouble, and take appropriate correc-

To assist in the troubleshooting process, the Troubleshoot­ing Chart on page 5 lists most of the common symptoms which valves exhibit, and their probable causes.

Before dsassembing a valve to investigate <i sysle......al-

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i-i fact ic^ ri=-^-icr'c /vv? suggest ■nnefo-c that potential malfunctions m a i system components be conside'eo when trouble occ j's I eaky cyimoer packings, poor electrical con­tacts, dirty filters, and air line leaks or restrictions are just a few of the things to be considered when troubleshooting a pneumatic system. Consideration of these possibilities can sometimes save an unnecessary valve disassembly job.

Caution: Before disassembling a valve or other pneumatic component or removing it from its installation, shut off and exhaust the entire pneu­matic circuit, and verify that any electrical supply is turned off. Follow appropriate lock-out/tag-out procedures.

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