The C&W Engineering Department is here to help you with all the information you need for obtaining your air permits. Whether state, county, or city EPA standards, we know what information is needed to secure your permits. Just give us a call and tell us you are in need of assistance with air permits and one of our highly capable engineering staff will be glad to get you the specific information you need to provide to the appropriate environmental agency.

We carry a full range of replacement parts for all collectors and accessory items. We offer 24-hour turn around on some parts delivery.  Email us at parts@cwmfg.com or call 800.880.3878 for quotes.

Recycle System not working? Try these troubleshooting tips:

Set timer to test settings and run cycle.
(T1-1 minute, T2-16 seconds, T3-1 minute)

Doesn’t run through two cycles? Remove T1 and T3 and switch positions.

Run test cycle again.

Completes two cycles after switching? Contacts may be wearing so it’s time to replace timers.

Completes one cycle, but not two? Check relay switch.

Doesn’t finish one cycle after switching T1 and T3? Call C&W at 800-880-DUST.

Call our service department at 800-880-3878 ext 108 or email us at parts@cwmfg.com

Always inspect your shipment for damages. Whether you accept or refuse, ensure damages are noted on bill of lading.

Yes, ensure the “ship to” address on your P.O. is accurate and correct so your shipment is sure to arrive on time and at the proper location. And  please ensure we have the name of the customs broker you will be using. Please also ensure we have the ship to company name the broker recognizes. If we don’t have all the correct information, your shipment will be delayed in customs until we get the correct information to the customs broker.

The Magnehelic Gauge located on a dust collector shows differential pressure between clean air side and dirty air side of collector (resistance through the filter media). This gauge is read in inches of water column - W.C.  C&W collectors are rated depending on the style, filter media and application.

RA series are rated for 6” W.C. Normal operational range for the RA series ranges 2” to 5” W.C. When the gauge reads higher, the cleaning cycle should be reset to clean more often, reducing the gauge reading back to normal range. If this does not reduce the reading, the filter media may require changing.
BP series (Pulse Jet Bag) are rated at 8” W.C. Normal operational range for BP series ranges 2” to 6” W.C.  When the gauge reads higher, cleaning cycle should be reset to clean more often, reducing gauge reading back to the normal range.  If this does not reduce the reading, the filter media may require changing.
CP series (Pulse Jet Cartridge) are rated similarly to BP series.

1.  Not all collectors operating under normal conditions read the same. You can evaluate the collector after the filter media is seated and running for several weeks. Once a normal reading is established, determination on cleaning cycles can be evaluated.

2.  If gauge reads zero while running, this may indicate a torn bag or cartridge, bag or cartridge incorrectly installed, crushed cartridge, blockage or loose tube connecting the gauge, or an inappropriately plumbed air tube - false readings will occur when tubes are crossed between dirty and clean air ports. If tubes are plumbed correctly, a closer inspection of the filter media is required.

3.  In some instances the application requires the static pressure to be designated higher than normal settings, mentioned above. Please consult C&W at 800-880-DUST for further information under these circumstances.

1.  Contaminated air flows in through collector inlet and into hopper.

2.  Heavier particles drop out into hopper, and lighter particles flow up into filter chambers.

3.  Particles are captured on inside of filter material.

4.  Clean air flows up and out through the main fan.

5.  For the cleaning cycle, air diverter valve opens one door for 4 seconds, allowing air flow to reverse through that filter chamber.

6.  Reversed air flow shakes filter material and blows freed dust down into hopper.

7.  At regular intervals, second air diverter valve door opens to clean second filter chamber.

8.  Recycle system empties collected dust from the hopper, returning it to the customer’s silo.

Normal filter cleaning settings run a cycle 4 seconds long on each chamber, alternating every 8.5 minutes.

Standard recycle settings are 16 minutes between each cycle. When the recycle operation begins, the butterfly valve opens and vibrator starts running, both for 64 seconds, to fill the pod. At the end of that time, the butterfly valve closes and vibrator stops running, then the recycle blower runs for 3 minutes to empty the pod and clear the cement return line.

This description is for 2-compartment collectors (RA120, RA140, RA170, and RA200). For 4-compartment collectors (RA280, RA340, etc.), operation is the same except that cleaning cycles are for all four compartments in sequence.

C&W offers training courses at our plant location, just outside Fort Worth, Texas. The training consists of two full days of instruction, including some hands-on time and a full plant tour.
Topics to be covered include:
Set up for your new dust collector
System start-up and maintenance How to get technical help
How to order spare parts
Airflow diagnostics
Timer adjustment basics
Magnehelic gauge basics
Long-term storage, and many more topics...
To sign up for a class, contact us at info@cwmfg.com.


C&W Environmental Solutions™ manufactures equipment to clean up dust, mist and fume from manufacturing processes.


P.O. Box 908  |  Crowley, TX 76036
6933 Shelmor Rd  |  Alvarado, TX 76009
800-880-DUST (3878)  |  817-783-5000