How to Install Your USAF Dust Collector

Need help installing your dust collector?

Now that you have your dust collector system, let's get you to the next step. How to install your dust collector properly.  This is a general guide for the installation, operation, start-up, and shut-down procedures of a cartridge collector or bin vent.

General Pre-commissioning (may not apply to all models)

1. Install the gasketed pair of cartridge filters and assure proper seat onto the tube sheet at the back.

2. Inspect hopper area to ensure that the discharge, including screw and valve (if applicable) are free of debris.

3. Energize the electronic timer(s) and adjust for a rapid firing sequence.

4. Observe signal lights on the timer board until satisfied that all terminals are energizing.

5. With timer operating as described, check "audibly" for the energizing of all diaphragm valves. These are positioned on the backside of the dust collector. After each pulse you will hear the purging of the air through the discharge port of the diaphragm valve.

6. Set Photohelic Differential Pressure Controller for desired high-end pressure and low-end pressure drop. To start, a high level of 4” and low level of 2” is recommended. This will determine when the pulse system will run and when it will stop. Set PLC or timer board as desired pulse duration, sequencing, and settling time between modules if applicable. A setting of 150 milliseconds and for duration (On Time) and 10 seconds for sequencing (Off Time) is recommended.

7. Open the compressed air header drain cocks and slowly crack open compressed air to header system. When header discharge is free of visible moisture, close the drain cocks or plugs.

8. Reduce compressed air to pressure by adjusting the regulating valve for approximately 90 PSIG header pressure.

9. Check the operation of each diaphragm valve in turn. The "normally closed” diaphragm (air valves) will open only on being signaled by the timer. The sudden release to atmosphere of compressed air from the "bleed hole" of each pilot valve will prove the air valves are being opened as required.

NOTE: At no time should two adjoining valves fire simultaneously, unless system is designed as such. If this occurs, check the timer wiring diagram.

Installation Instruction

Your dust collector must be properly installed and receive proper attention in order to maintain its high efficiency.

Foundation

Prepare the foundation to correspond with the support leg layout as shown on the drawings. Care must be taken to allow for proper loadings for California Earthquake Zone requirements or any other requirements particular to your state. It is recommended that a qualified cement contractor prepare the foundations.

Ductwork

Install the ductwork as predetermined and noted on the general arrangement drawings. It is the responsibility of the customer to provide for duct drawings as required by the local Air Quality Boards that govern in your area.

Piping

Route the compressed air to one end of the air receiver or receiver(s). Reference the attached drawings for tap requirements on air header and utilize that size pipe.

Wiring

Reference the section of this manual containing information needed for the proper installation of the electrical system. (Timer and Controls)

Manometer/Photohelic Gauge

Units with manometer taps pre-installed should be complete with tubing and gauge for field mounting where desired. Facilities should be provided for the periodic draining of condensation from tubing.

Operation (General)

Tuning the cleaning cycle timer and regulating the cleaning air pressure may achieve maximum collector efficiency. Adjust the timer and air pressure so that a reasonable steady pressure drop across the collector is maintained. Using a long cleaning cycle along with a minimum amount of cleaning air pressure increases filter media life. (Example: 30 seconds between pulse and 150 milliseconds duration).

Standard Start-Up Procedure

1. Apply power to panel. (This will activate timer)

2. Push fan motor start button.

3. Check cleaning air supply pressure in header and adjust initially to 70 psig., then increase to 90 as needed checking for leaks.

4. Check collector's differential pressure module controller periodically until an even level is observed. Clean filters are usually around 1/2" on start-up. Operational levels of 3" to 4” are maintained by decreasing pulse intervals.

Standard Shut-Down Procedure

1. Push fan stop button or E-Stop in emergency situation only. (If provided on panel)

2. Lockout panel for any maintenance for safety.

 

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