User manual DHI EXTERNAL RESERVOIR FOR PPCH 4 LITER CAPACITY PN 402102 INSTRUCTION SHEET

[. . . ] External Reservoir for PPCHTM 4 liter capacity P/N 402102 Instruction Sheet EXTERNAL RESERVOIR, P/N 402102, INCLUDES: DESCRIPTION QTY PART NO. Assembly, External Reservoir kit Tubing, PFA, 1/4 in. Swage 1 1 1 1 1 1 402167 101450-Z 101532 100247 100248 100249 NOTE: This instruction sheet is provided as a quick installation guide. For further details, see the PPCH Operation & Maintenance Manual's sections on use of an external reservoir. INITIAL CONSIDERATIONS FOR INSTALLATION OF RESERVOIR 1. [. . . ] The fittings on the external reservoir are 1/4 in. The ferrules need to be swaged to each end of the tubes. Adaptor for Reservoir return: Use the supplied 1/8 in. Swage adaptor for the EXTERNAL RESERVOIR RETURN bulkhead on the PPCH. To prevent accidental draining of the internal reservoir, keep the FILL/DRAIN valve in the closed position until the external reservoir is connected. INTRODUCTION The External Reservoir kit is designed for use with the PPCH Hydraulic Pressure Controller. The external reservoir is provided for applications requiring more fluid than can be held in the 300 cm3 internal reservoir. The external reservoir is connected in series with the internal reservoir so that internal reservoir features are still available. Figure 1. Swage Vent Plug, 10-32 x 1/8 Return Tube INSTALLATION OF RESERVOIR Close valve: Close the reservoir FILL/DRAIN valve. Swage adaptor in the PPCH EXTERNAL RESERVOIR RETURN bulkhead fitting. Connect tubes: Connect a tube from the PPCH EXTERNAL RESERVOIR RETURN port, to the return port (1) on the external reservoir. Connect tubes: Connect a tube from the PPCH FILL/DRAIN port to the supply port (2) on the external reservoir. The stainless steel Swage fittings are used at the PPCH FILL/DRAIN port connection. Fill external reservoir: Fill the external reservoir through the 1/2 in. Swage brass fitting (4) with the same fluid as is used in the PPCH. [. . . ] When the PPCH is vented, the system connected to the TEST port is also connected to the External Reservoir (which is higher than the TEST port). If there is an open point in the system below the fluid level in the reservoir, fluid will run out of the system at this open point. The top of the return tube defines the fluid head applied to the PPCH's Q-RPT when in a VENT condition. Enable reservoir return: Turn the PPCH RESERVOIR RETURN valve to the EXTERNAL position, and loosen the vent plug on top of the Reservoir ­ this is a 10-32 x 1/8 threaded plug. Document 560072 050412 DH Instruments, Inc. 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA Tel 602. 431. 9100 Fax 602. 431. 9559 dhi@dhinstruments. com www. dhinstruments. com [. . . ]