Damcos LPU-S-Ex-d-IIC for single-acting spring operated actuator Product Data Sheet Process Management

Damcos™ LPU-S-Ex-d-IIC LPU-S-Ex-d-IIC (and LPU-S-Ex-d-ia-IIC) LPU-S-Ex-d-IIC is designed for controlling spring closing actuators. Oil pressure is used for opening the actuator by pressing the springs together. Closing actuator by means of mechanical springs. The LPU is approved according to the ATEX directive 94/9/EC and is built to meet the requirements for mounting in hazardous areas Group II, Zone 0 (ia version, only actuator), Zone 1, Zone 2, Gas class 2C and temperature class T5 or T6. Shielded 230V supply cable must always be used. For further technical information please see general product...

Damcos™ LPU-S-Ex-d-IIC Operation LPU-S-Ex-d-IIC To move the valve towards open, the motor (3) is activated. The oil is led from tank through the pump and through the non-return valve (17), directly to the actuator B port. To prevent the oil from flowing back to tank, the solenoid valve (16) must be energized. When the valve is fully open, the pressure rises to 150 bar which causes the pump safety valve (7) to open and the oil flows back to tank. The motor is de-energized. The actuator is now hydraulically locked in position by the solenoid valve. In case of a major increase of temperature, the...

Damcos™ LPU-S-Ex-d-IIC Emergency operation LPU-S-Ex-d-IIC ..with permanently connected (bulkhead-mounted) hand pump Opening: Hand pump is activated until the required valve position is reached. Closing: The valve moves towards closed by opening the bypass valve in the hand pump block. When the remote control has to take over, the valve can be closed by energizing the solenoid valve and the motor for a few seconds. This will reset the shuttle valve. After emergency operation, remote control is automatically in charge. ... with portable hand pump (BRCF) A portable hand pump is connected to the...

Damcos™ LPU-S-Ex-d-IIC Dimensions LPU-S-Ex-d-IIC on KF/KFR actuator 49 BRCF Actuator

Damcos" LPU-S-Ex-d-IIC Product Data Sheet ©2012 Emerson Process Management. All rights reserved. The Emerson logo is a trademark and service mark of Emerson Electric Co. Damcos® and the Damcos logotype are registered trademarks of Damcos A/S, Rosemount® and the Rosemount logotype are registered trademarks of Rosemount Inc. Damcos A/S and Rosemount Tank Radar AB are members of the Emerson Process Management family of companies. All other marks are the property of their respective owners. The contents of this publication are presented for information purposes only, and while effort has Emerson...