APTech AK 91PA Instruction Manuals and User Guides
We have 1 Instruction Manual and User Guide for AK 91PA APTech
Manuals 
| Recognized languages: | English |
|---|---|
| Pages: | 4 |
| Size: | 54 KB |
Show table of contents
Document Outline
- A. General information
- B. System Design/Product Selection
- 1. AP Tech diaphragm sensed gas pressure regulators are not safety accessories per EU Pressure Equipment Directive 97/23/EC or safety related devices per EU ATEX Directive 94/9/EC. The EU Pressure Equipment Directive requires the system designer to in...
- 2. When selecting the pressure regulator model and configuration, verify the following information.
- a. Verify the materials of construction are compatible with the intended process gas.
- b. Verify the pressure and temperature ratings are acceptable for the intended application.
- c. If the regulator is to be equipped with either a supply or delivery pressure gauge, verify that the pressure gauge range is suitable for the application. For high flow regulators used at high supply pressures, be sure to consider the supply pressur...
- d. Verify that the flow capability of the regulator is appropriate for the application.
- 3. Pressure regulators can be used under a large variety of operating conditions. The system designers shall decide product selection based upon their own analysis and testing to verify acceptable operation with specific equipment.
- C. Installation
- 1. Verify the pressure rating is acceptable for the intended application.
- 2. If the regulator is equipped with either a supply or delivery pressure gauge, verify that the pressure gauge range is suitable for the application. For high flow regulators used at high supply pressures, be sure to consider the supply pressure effe...
- 3. Inspect the regulator to determine the flow path through the regulator and how the regulator will need to be installed in the system.
- a. The high pressure (inlet/supply) ports are labeled with an “HP” marked into the body near the ports. Arrows are sometimes used next to the HP to point toward a high pressure port.
- b. The low pressure (outlet/delivery) ports are labeled with an “LP” marked into the body near the ports. Arrows are sometimes used next to the LP to point toward a low pressure port.
- c. Dual stage regulators such as the AP1700 and AP2700 may have a monitor (1st stage outlet) port. The monitor port is labeled with an “MP” marked into the body near the port. Arrows are sometimes used next to the MP to point toward a monitor port.
- d. Always connect the gas source to the high pressure port. Never connect the gas source to the low pressure port or monitor port as the regulator will be damaged and leakage can result.
- 4. Install the regulator using the appropriate method described below. A large variety of porting options and connections are available.
- a. For tube stub connections, weld connectors or other components to the tube stubs per standard industry practice (reference SEMI standard F78).
- b. For metal face seal connectors, assemble connections per standard practice described by fitting supplier (typically 1/8 turn past fingertight).
- c. For NPT and BSPT connections, apply PTFE (e.g. Teflon) tape to connector threads and install connector in regulator body wrench tight.
- d. For compression tube fittings, insert the tubing until it bottoms out in the fitting. Assemble nut fingertight. Then tighten the nut 1-1/4 turns past fingertight for 1/4 inch to 1 inch tube connections. For remaking connections, only tighten the nu...
- e. For pneumatically actuated regulators (AP/AK/AZ10PA, AP/AK/AZ12PA, AP/AK/AZ14PAT, AP/AK/AZ15PA, AP90PA, and AP91PA), a separate line will need to be plumbed to provide the pneumatic actuator control pressure. The actuation port is 1/8th inch NPT a...
- f. Most regulators have threaded holes on the bottom for mounting. Refer to the applicable data sheet for details. However, for panel mount options, please refer to APTech Operation Manual Panel Mounting Gas Pressure Regulators for mounting procedures.
- 5. After installation, perform a leak test. A helium leak test, a pressure decay leak test, or a bubble leak test may be used depending on the application. A helium leak test is recommended for all face seal connections and welds per standard industry...
- D. Preset Regulator Operation
- 1. Perform the following to adjust the regulator delivery pressure set point
- a. Close the source valve.
- b. Open a downstream valve to vent the inlet and outlet side of the pressure regulator to atmospheric pressure.
- c. Remove the acorn nut from the stem.
- d. If present on the stem, loosen any hex nuts.
- e. Using a hex wrench, rotate the stem fully counterclockwise to close the regulator.
- f. Close the downstream valve.
- g. Slowly open the source valve to pressurize the regulator high pressure port.
- h. Using a hex wrench, rotate the stem clockwise to increase the delivery pressure to the desired set point.
- i. If present on the stem, tighten the bottom hex nut to 75 in-lb. If there is a second hex nut on the stem, tighten it against the bottom hex nut.
- j. Thread the acorn nut onto the stem and tighten against the hex nut (or cap if there are no hex nuts on the stem).
- 1. Perform the following to adjust the regulator delivery pressure set point
- E. Manually Adjustable Regulator Operation (non-PA models)
- 1. Perform the following to open the regulator or increase the regulator delivery pressure set point.
- 2. Perform the following to decrease the regulator delivery pressure set point.
- a. Open a downstream valve to initiate a flowing condition.
- b. Slowly rotate the wheel counterclockwise to reduce the delivery pressure.
- c. In order to obtain a specific set point under flowing conditions, continue to rotate the wheel counterclockwise to reduce the delivery pressure below the desired set point. Then, rotate the wheel clockwise to increase the delivery pressure to obtai...
- 3. Perform the following to close the regulator.
- F. Pneumatically Actuated Regulator Operation (PA models)
- 1. Perform the following to open the regulator or increase the regulator delivery pressure set point.
- 2. Perform the following to decrease the regulator delivery pressure set point.
- a. Open a downstream valve to initiate flow.
- b. Slowly reduce the actuation control pressure to reduce the delivery pressure.
- c. In order to obtain a specific set point under flowing conditions, continue to decrease the actuation control pressure to reduce the delivery pressure below the desired set point. Then, increase the actuation control pressure to increase the deliver...
- 3. Perform the following to close the regulator.