User manual FLUKE GB-H-152-100M

[. . . ] 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. [. . . ] During the suction stroke (backward movement), the outlet check valve closes and the inlet check valve opens letting instrument gas enter the compression chamber. During the compression stroke, the inlet check valve closes and the outlet check valve opens letting compressed gas out of the pump. For example, with 4 MPa (600 psi) applied, maximum output pressure cannot exceed 4 x 25 = 100 MPa (15 000 psi). 3. 1. 2 BOOSTER DRIVE SHUTOFF VALVE (13) The shutoff valve is a ball-type, 90° turn valve. This valve can be considered a booster ON/OFF switch. 3. 1. 3 ACCUMULATOR (9) The accumulator is a stainless steel cylinder with an internal volume of 150 cc (9. 2 in. 3) The accumulator serves as a reservoir of high pressure gas so the gas boosted to high pressure can be stored. This helps to provide a continuous flow of high pressure gas to the pressure controller the GB-H-152 supplies when the pressure controller is increasing pressure. A DH500 fitting and plug on the bottom of the accumulator cylinder act as a drain to purge the cylinder should liquids accumulate in it. (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). The control knob is pulled out to make adjustments; pushed in to lock into position and prevent accidental changes. 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. 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). [. . . ] If pressure is in the system and the fitting should fail while tightening it, you or those around you may be injured. Do not over-torque the compression-type fittings that are inside the GB-H-152. 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. [. . . ]