User manual FLUKE MPG1

[. . . ] MPG1TM Manual Pressure Generator/Controller for Hydraulic Pressure Operation and Maintenance Manual © 2004-2007 DH Instruments, a Fluke Company High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases can be released unexpectedly and with extreme force. High pressure systems should be assembled and operated only by personnel who have been instructed in proper safety practices. © 2004-2007 DH Instruments, a Fluke Company All rights reserved. Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of DH Instruments, a Fluke Company, 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA. [. . . ] The mounting hole diameter is 6. 6 mm (0. 26 in. ) suitable for M6 or 1/4 in. If mounting to a wood bench top, use of threaded inserts and machine screws is recommended. Connect the TEST1 and/or TEST2 port to the system into which pressure is to be generated and controlled. All MPG1 pressure connections are DH500 female (DH500 is a gland and collar type fitting for 1/4 in. If a TEST port is not being used, plug it using a DH500 plug supplied in the MPG1 accessories. ALWAYS use external tubing and fittings rated for pressures equal to or greater than the maximum pressure which MPG1 will be used to generate. DH500 F fittings are delivered with disposable, orange, plastic dummy plugs installed. They should be removed and replaced with appropriate fittings or stainless steel plugs before high pressure operation. Remove and retain the collar for use in connecting to the mating tube. MPG1 is tested with a low viscosity, fluorinated liquid and should be free of significant fluid residue as delivered. Prime and leak check pressurized system (see Section 3. 2). © 2004-2007 DH Instruments, a Fluke Company Page 6 3. The maximum operating pressure of the variable volume is 200 MPa (30 000 psi) in MPG1-200M. Do not generate pressure greater than the maximum operating pressure. Page 7 © 2004-2007 DH Instruments, a Fluke Company MPG1 USER'S MANUAL 3. 1. 4 RESERVOIR 3 The reservoir is a 362 cc (22. 1 in ) acrylic vessel mounted inside the MPG1 housing. It is accessed for filling or cleaning by a friction fit lid through the top of the housing. The reservoir is connected to the RESERVOIR ISOLATION valve by flexible tubing. The reservoir lid can used to force fluid out of the reservoir into the system connected to the OPG1. 3. 2 OPERATION Operation of the MPG1 can be divided into three common tasks: filling and priming the system under test (See Section 3. 2. 1); generating and adjusting pressure (see Section 3. 2. 2); filling or emptying the variable volume while maintaining test system pressure (see Section 3. 2. 3). 3. 2. 1 FILLING AND PRIMING THE SYSTEM UNDER TEST Before attempting to use the MGP1 to generate high pressure, the system to which it is connected should be as free of air as possible. Minimizing the air in the pressurized system increases the effectiveness of the variable volume in generating pressure. When the MPG1 is first connected to a system to be pressurized or if a new device is connected to the system, proceed as follows to fill and prime the system before attempting to generate high pressure: Connect the MPG1 to the system under test or connect a new device to the system. If possible, leave an open connection or cracked fitting at a high point in the system to be pressurized. Open the RESERVOIR ISOLATION valve and close the TEST ISOLATION valve. Fill the variable volume with fluid from the reservoir by screwing it all the way out (CCW) to its end of stroke. Close the RESERVOIR ISOLATION VALVE and open the TEST ISOLATION valve. Screw in the variable volume (CW) while observing the open point in the test system. [. . . ] This vents the pressure in the variable Back out the variable volume (CCW) to fill it or screw it in (CW) to empty it, as desired. Operate the variable volume as needed to generate a pressure equal to the pressure in the system connected to the TEST port(s). This is the pressure that was present on the variable volume before the TEST ISOLATION VALVE was closed in . The pressure may be reasonably approximated by the feel (torque) on the variable volume. [. . . ]