User manual DHI INSTALLATION OF REGULATOR KIT ONTO 14 IN. MOLSTIC-S MOUNTING PLATFORM 401880

[. . . ] This upgraded configuration is ideal for the situation where the device under test (DUT) will be tested while plumbed downstream of the molbloc-S. High pressure gases are potentially hazardous. Energy stored in these 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. Thread the VCR male union (4) into the regulator outlet port and tighten finger-tight. [. . . ] Place the VCR male nut (3) over the tube adaptor (2) and thread it into the regulator inlet port and tighten finger-tight. Over-tightening VCR connections will damage the sealing beads and possibly cause system leakage. Do not re-use metallic VCR gaskets. Hold the regulator stationary, and tighten the male nut 1/8 turn past finger-tight. Install the quick connect body (1) onto the tube fitting and tighten 1-1/4 rotations beyond finger-tight. Place a new VCR gasket into the outlet port of the regulator. Figure 2. molstic-S Nut Plate Place the flat side of the 60 mm nut plate (Fig 2, 1) under the molstic-S platform. Align it with the holes in the platform and the regulator bracket. Thread the two M4 socket head cap screws and M4 flat washers through the regulator bracket and tighten them securely into the nut plate. Turn on gas supply: Apply the supply pressure to the pressure control regulator. Slowly raise system pressure to desired test pressure: Rotating the regulator's control knob clockwise raises the outlet pressure. Rotate counterclockwise to lower the outlet pressure. Increase the system pressure to the desired DUT operating pressure. Make final adjustments of control pressure in the direction of increasing pressure in order to obtain the most accurate and stable set point. Adjust the regulator to obtain the desired operating pressure. Provide additional margin only if the final pressure will be within the safe operating range of the molbox. SYSTEM PRESSURIZATION AND REGULATOR ADJUSTMENT During system operation, be extremely careful not to apply pressure in excess of the maximum operating pressure of the molbox: 600 kPaa (87 psia) for molbox1-A700K; 250 kPaa (36 psia) for molbox1-A350K. Once the test system with molbloc-S and molstic-S has been completely interconnected, the following procedure should be used for its safe pressurization and operation. The outlet pressure of a pressure reducing regulator is controlled by adjusting the position of the control knob. Rotating the knob in the clockwise direction raises the outlet (control) pressure. Counterclockwise rotation, coupled with venting of the downstream side of the regulator plumbing, lowers the outlet pressure. molstic-S regulators are NOT self-venting so the outlet pressure will not decrease with counterclockwise rotation of the control knob unless the downstream gas is allowed to escape. Make final adjustments of control pressure in the direction of increasing pressure in order to obtain the most accurate and stable set point. Regulator Adjustment Once the regulator has been adjusted to the desired pressure its adjusting stem should be locked down to prevent further adjustments. This will help protect the molbox RPTs from over-pressurization. Remove regulator knob cover: Use a small flat screwdriver to remove the plastic cap on the top of the regulator adjustment knob. [. . . ] All that is necessary is a small flow to allow the system to fully pressurize. Display system pressure: Monitor the system pressure as measured by molbox by pressing the [P&T] function until the pressure is displayed. Refer to molbox Operation and Maintenance Manual for details. The following parts are included in the shipment: DESCRIPTION Regulator, pressure reducing Regulator bracket Adaptor, 4VCR x 4T Male nut, 4VCR Gasket, 4VCR Quick connect body Quick connect stem Union, 4VCR male SHC screw, #10-32 x 3/8 Split lock washer, #10 Flat washer, #10 SHC screw, M4 x 12 Flat washer, M4 Nut plate, 60 mm QTY 1 1 1 1 4 1 1 1 2 2 2 2 2 1 PART NO. 103230 123657 102454 102821 102183 102459 102458 103231 103277-Z 103021-Z 103278-Z 101016-Z 100918-Z 123621 molbloc, molbloc-S, molbox, molstic and molstic-s are trademarks, registered and otherwise, of DH Instruments, Inc. [. . . ]