User manual FLUKE GB-H-152-70M

[. . . ] GB-H-152-70M and GB-H-152-100M Gas Booster Packages Operation and Maintenance Manual © 2008 DH Instruments, a Fluke Company GB-H-152 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 a high gas pressure output. 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. Pressurized equipment is potentially dangerous. The equipment described in this manual generates and controls very high gas pressures. [. . . ] (The GB-H-152 supply gas should be dry; the drain does not imply that it is acceptable to supply moist test gas to the booster). 3. 1. 4 DRIVE AIR REGULATOR/FILTER (15) The drive air pressure regulator (15) is a self-venting type regulator with an outlet pressure control range of 0 to 1 MPa (150 psig). Maximum inlet pressure is 1. 7 MPa (250 psig). The control knob is pulled out to make adjustments; pushed in to lock into position and prevent accidental changes. The regulator also includes a filter and a filter bowl drain tap. The regulator should be adjusted from a lower pressure to a higher pressure. This is due to the tendency of a pressure regulator to drift in the opposite direction of the pressure adjustment. Adjusting the regulator in this way will help avoid an overpressure condition due to regulator drift. The drive air adjust regulator (15) output should never be adjusted to greater than 0. 8 MPa (100 psi) on GB-H-152-70M or 0. 9 MPa (130 psi) for the GB-H-152-100M. Higher drive air pressure can result in a booster output pressure that exceeds the maximum working pressure ratings of system components. 3. 1. 5 HIGH PRESSURE REGULATOR (6) The high pressure regulator (6) 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 2 to 100 MPa (300 to 15 000 psig) for the GB-H-152-70M and 3 to 120 MPa (450 to 18 000 psig) for the GB-H-152-100M. Maximum inlet pressure is equal to the maximum outlet pressure. © 2008 DH Instruments, a Fluke Company Page 10 3. OPERATION The regulator should be adjusted from a lower pressure to a higher pressure. This is due to the tendency of a pressure regulator to drift in the opposite direction of the pressure adjustment. Adjusting the regulator in this way will help avoid an overpressure condition due to regulator drift. 3. 1. 6 GAUGES (3, 7, 14) There are three gauges: The booster drive pressure gauge (14) indicates the pressure set by the drive air regulator (15). The test gas supply gauge (3) indicates the pressure connected to the SUPPLY IN port (1). The high pressure gauge (7) indicates the pressure set by the high pressure regulator (6) and present at the HIGH PRESSURE OUT port. 3. 2 SETTING HIGH PRESSURE OUTPUT EQUAL TO OR LESS THAN THE SUPPLY PRESSURE All previous sections (especially Section 2. 3) should be read, understood and instructions carried out before continuing. It is not necessary to operate the gas booster pump when setting pressures up to the value of the test gas supply. The gas booster pump will not stop the flow of gas to the input of the high pressure regulator. Test gas supply pressure is always present at the inlet of the high pressure regulator whenever it is supplied to the GB-H-152. 3. 2. 1 INCREASING PRESSURE Close the high pressure adjust regulator by rotating the knob counter-clockwise until no spring force is felt. Apply instrument gas to the SUPPLY port. Ensure the supply does not exceed 40 MPa (6 000 psi). Pressures above this range may result in a failure that could damage the instrument and/or cause personal injury. Plug the high pressure output circuit to prevent gas flow (circuit is dead ended). Adjust the high pressure adjust regulator by rotating the knob clockwise until the desired pressure is indicated on the high pressure. To correctly set the pressure, gas flow must not occur. [. . . ] Contact a DHI Authorized Service Provider for assistance (see Table 2). Page 19 © 2008 DH Instruments, a Fluke Company GB-H-152 GAS BOOSTER PACKAGE OPERATION AND MAINTENANCE MANUAL 5. 8 GAS CONTINUOUSLY VENTS THROUGH EXHAUST MUFFLER When the booster does not run and gas is venting through the muffler (14), the booster's air cycling valve (spool valve) is stuck between its toggle points. This is normally caused by a low drive air flow rate. There are two methods for restoring proper operation. It is recommended to perform them in the order below: Close the high pressure adjust regulator (6) and booster drive shutoff valve (4), then increase drive air pressure to about 0. 5 MPa (75 psi). [. . . ]