User manual FLUKE GB-K-152

[. . . ] GB-K-75 and GB-K-152 Gas Booster Packages For PPCK+ Pressure Controller/Calibrator Operation and Maintenance Manual © 1998 - 2000 DH Instruments, Inc. GB-K Gas Booster Package Operation and Maintenance Manual This equipment described in this manual is designed and manufactured for the intended purpose of generating high pressure gas and regulating two independent gas output pressures. Certain precautions need to be followed during installation and operation of this device. Reading and understanding the material is essential to the safe and correct operation of the unit. The equipment described in this manual generates and controls very high gas pressures. [. . . ] The compression ratio of the high pressure piston is 25:1 (for both models). Maximum output pressure is limited by the instrument gas supply pressure. For example, with 2 MPa (300 psi) applied, maximum output pressure cannot exceed 2 x 25 = 50 MPa (7 500 psi). 3. 1. 2 VALVE The shut-off valve is a ball-type, 90° turn valve. It is used to prevent flow of shop drive air to the pump which shuts off the booster. This valve can be considered a booster ON/OFF switch. 3. 1. 3 VOLUME CYLINDER (ACCUMULATOR) The volume cylinder is a stainless steel chamber with an internal volume of about 50 cc. Two fittings on the front face of the chamber provide inlet and outlet connections. It is used to dampen pressure fluctuations during the reciprocating action of the pump and to provide a reservoir of high pressure compressed gas. 3. 1. 4 REGULATORS Three regulators are used in the system for control of the Shop Drive Air, Low Pressure Outlet and High Pressure Outlet pressures. All regulators should be adjusted in the increase direction due to hysteresis in the regulators. Should a regulator be adjusted from a higher pressure to a lower pressure, once gas begins to flow in the regulator the pressure ultimately set will be lower than that initially set. To avoid this situation, set the initial pressure below the setpoint then adjust the regulator up to the final setpoint. The Shop Drive Air Pressure Regulator (10) is constructed of 316 stainless steel and nylon wetted components. It is a self-venting type regulator with an outlet pressure control range of 0 to 0. 86 MPa (125 psig). The control knob is pulled out to make adjustments; pushed in to lock into position and prevent accidental changes. The Low Pressure Outlet Regulator (12) is constructed of aluminum, Viton, stainless steel and Nylatron wetted materials. It is a non-venting type regulator with an outlet pressure control range of 0. 15 to 1. 25 MPa (20 to 180 psig). The High Pressure Outlet Regulator (7) is constructed of 303 stainless steel, Kel-F, Buna-N, and Teflon wetted materials. It is a venting type regulator with an outlet pressure control range of 1. 5 to 50 MPa (200 to 7 500 psig) or 2 to 76 MPa 300 to 11 000 psig. Maximum inlet pressure is equal to the maximum outlet pressure. © 1998 - 2000 DH Instruments, Inc. Page 14 GB-K Gas Booster Package Operation and Maintenance Manual 3. 1. 5 GAUGES There are three gauges in the unit used to indicate the Shop Drive Air Pressure, Low Pressure Outlet and High Pressure Outlet settings. The Shop Drive Air Pressure Gauge (9) is constructed of brass and is 1. 5 in. It is used to indicate the output pressure of the Shop Drive Air Regulator (10) supplying gas to the air drive section of the gas booster pump. The Low Pressure Outlet Gauge (5) is constructed of stainless steel and is 2 in. It is used to indicate the output of the Low Pressure Outlet Regulator (12). [. . . ] Do not over-torque the compression-type fittings that are inside the GB-K. To do so will damage them requiring their replacement. Check all fittings and components for leaks. It is possible that a leak exists in the high pressure section of the gas booster. If no leaks can be found following the above procedures, it is likely the problem is within the booster. [. . . ]