DeZurik ANSI/AWWA C540 Instruksi - Halaman 4
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ANSI/AWWA C540 Hydrualic Cylinder for G-Series Actuators
Description
The ANSI/AWWA C540 Hydraulic Cylinder for use with G-Series Actuators is intended for water
hydraulic service. This cylinder can be used with Pumpcheck accessories.
Supply
The maximum cylinder supply pressure is 150 psi. The supply medium is clean water.
Required Tools
The cylinder is assembled with SAE fasteners. Tools required for adjustment and disassembly include
a set of combination wrenches, a flat-tipped screwdriver and a small hammer.
This cylinder is a pressure vessel. Supply pressure must be disconnected from the
cylinder and the cylinder completely relieved of pressure before disassembling the
cylinder. Failure to release pressure may result in personal injury and/ or damage to
other equipment.
Lubrication
If the cylinder is disassembled, lubricate the cylinder wall, piston seal, U-cup and U-cup groove using
one of these lubricants.
•
Dow Corning Molykote No. 44 (recommended)
•
Shell Retinax AM (alternate)
•
Shell Lithall MDS (alternate)
Closed Position Adjustment
The set screw in the end of the cylinder is used to limit the cylinder stroke.
1. Turn the set screw in the end of the cylinder counterclockwise about five turns.
2. Close the valve. See Valve Instructions to determine closed position.
3. Turn the set screw clockwise until you feel resistance as it contacts the piston rod.
4. Lock the set screw in place with the nut. Be sure the thread seal is positioned properly.
Disassembly
Follow the steps below to disassemble the cylinder.
•
Servicing the actuator while the pipeline is under pressure can cause personal injury or
equipment damage. Relieve pipeline pressure before servicing the actuator.
•
Accidental operation of power actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
D10296
Page 4
March 2017