A: The kits part number is PCL500. We still do, indeed, carry it. The price has remained the same: $299.00. You can purchase on this site with a credit card if you wish.

A: The PVK599 is available and in stock. The PCK781 is, unfortunately obsolete with no replacement. Give us a call to order the first, and well try to suggest a suitable alternative for the second.

A: We sent you a Johnon Controls Pneumatic Operators Manual, with reference to specific pages via email. We hope this helps you.

A: Your specification data has been emailed to you.

A: Your information has been emailed to your attention.

A: Take a look at our part number, PNSC-02. The solvent is in a charged container (non-cfc charge)and directly injects in to the air supply, atomizing contaminants and carrying them out through the orafices of the system. It is a bit expensive, but could present the most economic alternative for you. Here is our catalog page: https://www.neccdelivers.com/_PDF/CHE.PDF

A: From this web site! Go to the parts search page and index part number 4FRPE-250 or call us at 800-227-9800 for pricing.

A: Caa us at 800-227-9800, to discuss your application further.

A: Try this link to Johnson Controls product literature site, http://cgproducts.johnsoncontrols.com/default.aspx?main.aspx&2. If you call us at 800-227-9800, I have something I can send to you.

A: Call us at 800-227-9800. Well quote you and probably be able to send it out to you right away.

A: We sent you a copy of the compressor sizing instructions found on page 57 of our current "HVAC Guidebook". Following these instructions will produce the answer you require for your customers system.

A: I sent you a separate message with the instructions attached. Thanks for your inquiry, and please shop at www.neccdelivers.com or call us at 800-227-9800.

A: There is no "rebuild kit" for these thermostats, though there are parts available for rebuilding. I am sending you a repair parts manual so you can look it over to see what is available. I hope this helps.

A: There are many different types of pneumatic diverting valves. Please call us at 800-227-9800 to discuss your application. With a bit more information I am sure we can help you!

A: The removal of the moisture in your system, as well as the cause for the moisture in the system should be removed before addressing any controls issues caused by the moisture. Look up our part number PNSC-02 to see a method of removing moisture from the system. This solution may be applied with the pneumatic controls in-line, allowing for the possible demoisturization of the controls. Depending on the length of time, and depth of the contamination some of the controls may still be used. Due to labor costs, it is actually less expensive to replace controls rather than rebuild them. Replacement restrictor kits, etc.for some Barber Colman thermostats, are available if you are interested. Call us at 800-227-9800.

A: Leaks are always evasive. Depending upon the expanse of your system, you can employ gauges in specific zones, to ensure good air pressure on a zone-by-zone basis. Sonic testers, such as the tye used on steam traps may be of help. Soem people like introducing odors to the system, and trying to find their concentrations. I dont like this method, as many of the controls will standardly bleed air and the odor, making it difficult to distinguish leaky areas from standard bleed-offs. Personally, I like the idea of isolating runs with gauges to help identify undue pressure drops. You may find it easier to re-pipe areas, rather than hunt for the leaks. You have to decide which method is the most economical for your building and your team.

A: Call us at 800-227-9800. We will be happy to help you identify the part you need.

A: If you check our catalog, "HVAC Guidebook", you may find what youre looking for. There are charts representing several manufacturers transmitters and ranges. Please note that each manufacturers transmitter range may not match exactly. You will need to find the one with the closest range for your application, and then make sure to select the appropriate receiver gauge to match. For a printed copy of our book, or CD-rom, please call us at 800-227-9800.

A: On the T-4756, the lower element is on control at 15 PSI supply pressure; the upper element at 20PSI. th switchover pressure is 17.5 PSI. You can visibly tell a DA element by the visible stripes on it. The action of the elements are defined by part number. The T-4756-201 has 15PSI DA and 20PSI RA. The T-4756-206 has 15PSI RA and 20 PSI DA. Give us a call at 800-227-9800 and we will help you select the correct model for your application.

A: Gauge readings are the most fundamental of trouble shooting tools. If you know what pressures, temperatures or conditions you are supposed to have in your system, properly placed gauges give you a view in to what is truly happening in your system. For example, if you know you are supposed to be producing 65 psi, and your gauge is reading 64 psi, it is probably not indicating a big problem; but if that gauge is reading 35 psi, you know you have some work to do to get that system up to its proper operating pressure. Guages are like a roadmap: if you know where you want to go, the map can help you get there. If you dont know what condition you are looking for, a gauge reading will not help you. Get a firm grasp on the operating pressures, temperatures, etc. in your system, and you gauges will help you to maintain the system at higher efficiencies.

A: Having inherited the system, evaluate whether or not you will need help getting this particular system squared away. If you need help, petition for it. If not, lets begin. If there is no print available, first thing is to trace the tubing back to its origins; thermostats, controllers, transmitters, etc., to figure out what is supposed to be controlling what. Next, begin reconnecting the tubing to the appropriate places. Be sure to check the condition of your air supply to be sure you have clean, dry, oil free air to power the controls. If there is no print, and the control scheme is not obvious, you may have to sit down and write a control statement of your own, taking in to consideration all of the equipment and controls contained in your system; if theres no roadmap, write one yourself. Key considerations must be safety, comfort and efficiency. Once youve established the path to travel, begin testing and calibrating the thermostats and controllers, all of the devices on the system, so they will do what you need and expect them to do. Set out a specific plan of attack, placing priority to the most important areas of your building(s). This process may take some time, so be patient, be methodical and communicate realistic expectations for yourself, the people working for and with you, and your employer.

A: According to Johnson Controls, the position of the sensing element will not effect the operation of the instrument. An averaging element, however, should be arranged in a "Z" pattern, insuring that as great a cross-section of the duct as possible is being sensed. The thermostat can be made direct or reverse acting by changing the position of the sliding control port. Repositioning the control port will also change sensitivity on proportional models and differential on two-position models. For a direct acting instument, the sliding control port should be positioned above the midpoint on the slider rail. For a reverse acting instrument the slider control port should be positioned below the midpoint of the slider rail. The rail is marked DA at the top and RA at the bottom. Moving the slider upward from the midpoint on the rail increases sensitivity and decreases differential for direct acting applications. Moving the slider downward from the midpoint on the rail increases the sensitivity and decreases the differential for reverse acting applications.

A: 1. Count the devices connected to the control system that uses air. 2. List the model and function of each device. 3. Look up to air use (in scim) in the factory manuals. Total the air consumption of your control system. 5. Divide the scims by 1728 to convert to scfms. Multiply the scfms by 3 to accommodate the recommended one third run time. Order the compressor based upon your scfms.

A: I have no reference for this part number. Could it be T-5800-4? Call us to discuss - 800-227-9800.

A: Pneumatic day/night and cooling/heating thermostats have very different functions. Day/night thermostats are used to maintain a specific setpoint for daytime, and a different setpoint for night time. Cooling/heating thermostats are used to manage setpoints pertaining to different modes of operation, usually based upon seasonal environmental changes. Both types of thermostats have two bimetallic elements mounted on one chassis, with an internal switching relay that decides, via supply air pressure, which bimetal to control with. The standard Johnson Controls changeover pressures are 15 and 20 psi. Depending on the particular model thermostat you employ, at 15 psi supply pressure all of the control is left to one of the bimetals, at 20 psi supply pressure the other bimetal is given the control. Each of the bimetals operates as a separate thermostat; as such, they each require their own calibration at their specific supply pressure. Consult the specifications for the specific model you have to determine which bimetal is which.

A: Replace the safety valve.

A: The first thing to check is your main air pressure. Make sure that the main air pressure is within the prescirbed limits of the thermostat. Next, be sure that your connections to the thermostat are correct and that the airheads are installed correctly, so that there is no leakage at the point of conncection. Finally, check the calibration of the thermostat.

A: There are several methods of leak detection, some more reliable than others. The most effective is to employ an ultrasonic tester. Walk the air system with the device. It will indicate where your problems are. The next method is not as exact. Use some aromatic essence, maybe citrus or peppermint extract. Forewarn the people occupying the space. Tell them that you are searching for the scent and to tell you if they pick it up. Place just a drop or so in to the air stream. After that the hunt is on. If you still have problems, call us at 800-227-9800. Once you are done, you may want to consider installing pressure reducing stations on a zone by zone basis throughout the building. Each pr station would be responsible for regulating the main air supply to the controls in a particular zone. Once the zones are created, it should be easier finding leaks in the future. Also, install gauges at reasnalbe intervals throughout the system. The gauges will help you identify problem areas.

A: Go to our factory links page and follow the link to Honeywell. You will find all the literature you need.

A: Call us with regard to the training. We will be happy to help you. When you call, let us know which manufacturers receiver controllers are in the panel. Additionally, try to get hold of the control drawings for the building. They should contain the squence of operation as prescribed by the whoever designed the system. 800-227-9800.

A: Through the use of a mechanical linkage, a pilot positioner senses the position of the controlled device and adds additional pressure to the actuator, up to main air pressure, to ensure the correct position relative to the control signal transmitted from the controller.

A: We do have access to parts for the Series 200 Controllers which were obsoleted by Powers Process Controls a few years ago. Please call us with the part number from your controller and we will be able to find you what you need. Our number is 800-227-9800.

A: There are maintenance methods for Powers Process systems. To be sure of what you are looking at, we need more information from you. Please call us at 800-227-9800.

A: A restrictor is a pneumatic device that reduces the volume of air going through a line without reducing the pressure in the line. It is used in conjunction with pneumatic controls to allow the devices to operate smoothly and efficiently. A one pipe thermostat has no internal restrictor, as is the case with two pipe devices. As result, the use of an external restrictor is required to operate the one pipe thermostat. This is also the case with pneumatic transmitters. Pneumatic transmitters are all one pipe devices, requiring the use of a restrictor.

A: The indicators that you are looking for are still available. They come in a few varieties. Our part numbers begin with PI15. You can put that partial part number in to our parts search area to scroll the available types. As far as the relay, give us a call at 800-227-9800 to discuss the application.

A: I believe your best route is t build this yourself. Select the components you would like to highlight during training and use peg board to mount the devices in a concise, accessible manner. As I have said before, I like using individual components rather than pre-arranged training boards. That way the trainees have the opportunity to construct the control loop themselves. As far as documentation, there are many good resources for pneumatic fundamental training. I sugggest starting with Robertshaws "Fundamentals of Pneumatic Controls" book. Our part number for the book is RPC-FUND.

A: Thank you for your question regarding Pneu-Flush. We do recommend that Pnue-Flush maybe used in occupied areas, schools, hospitals, nursing homes, etc. the product is based on a solvent developed by Du-Pont as a HFC based solvent replacement for DuPonts Freon TF and Allied Signals Genesolv D. DuPonts testing determined that the highest concentrations of the solvent detected during usage trials was 345.1 ppm. All concentrations above 100 ppm were from samples taken where the stream of air containing the solvent entered the room. All samples taken at distances away from the exit stream were below 90 ppm. Doors and windows were closed during the test, as a precaution it is recommended that doors should be opened during cleaning to inhibit the possibility of any potential concentration of solvent.

A: It is feasible for all of them to run at the same supply pressure, so long as they are not dual pressure thermostats. Dual pressure thermostats are designed to work at two different supply pressures, allowing the thermostat to manage day/night, summer/winter and heat/cool functions. Each manufacturer uses different changeover and operating pressures to accomplish this. For that reason it is good practice to standardize when using dual pressure thermostats.

A: The restriction plate on the back of the 192 S series Powers thermostats should not have to be replaced if the supply air is kept clean, dry and oil free. The same applies to the thermostat. If the instrumnet is exposed, however, to contaminated air the internal orafices may become clogged. Siemens does not market a repair kit, but they can be rebuilt. Call us at 800-227-9800 to get a price on rebuilding your thermostats.

A: Each one of your receiver controllers can be set up to any 3 to 15 psi output that you need, based upon a sensed condition sent to it by the its transmitters. All that you need to do is calibrate and set up each one to provide the comfort level desired.

A: The resritors you use should match the orafice of the transmitter. If you are not sure what that is start small and work up. Try the smaller restrictor first. If the control reacts quickly enough leave it alone. If the control seems sluggish move to the larger restrictor.

A: There are three kits available. 195-066 receiver-controller restriction kit includes three input restriction plates, one pilot relay restriction plate, gaskets, and two screws. 195-067 is the replacement pipehead for multiple input models. 195-114 is the replacement pipehead for single input.

A: We suggest installing a secondary pressure regulator on the compressed air line coming from the compressor. Our part # PPR114 will regulate the pressure, after the primary regulator, down to as low as 0.1 psi and up to 60 psi. Install gauge # PG24B100 on to the PPR114 to indicate your output pressure.

A: The T-6024 is a direct acting remote bulb pneumatic controller, used to provide proportional control in commercial HVAC systems. It has an adjustable throttling range of 3 to 35 degrees F at 10 psi (factory set at 5 degrees). For more detailed information call us at (800) 227-9800.

A: The standard is simply this: clean, dry, oil free air. ATC air stations should start with a climate control compressor. These compressors are specially designed to run at a lower rpm than standard compressors, thereby throwing less oil. After the compressor, a series of pop safety valves, pre-filters, coalescing filters, drains and air driers are employed to help reduce the amount of contaminants in the air before it reaches the controls. Consistent maintenance is a must at the air station, and often overlooked. Most problems with pneumatic controls systems start with lack of maintenance at the air station. For a suggested maintenance schedule refer to page 123 in our catalog, the HVAC Guidebook. If you do not have our book, call us at (800) 227-9800. We will be happy to send you one.

A: Most contamination problems in pneumatic air systems originate at the air station. As result, flushing the lines within 500 feet of the air station will usually do the trick. Pneu-Flush is a non cfc solvent that direcly injects into the main air lines. The solvent vaporizes the sludge and contaminants, which are propelled by the supply air, leaving the system through the controls. This product is safe for use with most pneumatic controls in use today. For more specific information on Pneu-Flush call us at (800) 227-9800.

A: We have one! Call us at (800) 227-9800. We will be happy to send it to you.

A: If you have a device with a 3-8# spring: add 3 + 8 and divide by 2 (5.5# is mid-spring. If you have multiple springs: 3-8#, 5-10# and 10-15#, add the lowest number (3) and the highest number (15) and divide by 2 (9# is mid-spring).

A: Yes we do. Our part #CFR114 is a combination filter and regulator. Trade price is $40.80.

A: To effectively check out a receiver controller, you need to know what information is being sent to it by the transmitter(s) and what you want the device to do with the information. First, check out the primary transmitter. If it is a temperature transmitter, measure the temperature being sensed with a calibrated thermometer. Convert that temperature into the corresponding psi for that particular transmitter. If you do not know how to do that, give us a call. Once you know what the transmitter output signal should be, tee a gauge in to the line between the transmitter and the receiver controller to insure that the transmitter is working properly. If it is, the signal should be the same as your calculation. If using a secondary transmitter, repeat the process to check it. Next check the supply air going to the receiver controller by teeing a gauge in to the supply line. Once you have proved that you have good supply pressure, go to the branch line coming off the receiver controller to check the output signal. It should correspond to the pressure that the receiver controller is calibrated to send based upon the condition of the primary and secondary temperature(s) sensed. If it does not, the receiver controller must be recalibrated. Use the factory calibration instructions to properly set up the receiver controller.

A: For new installation:

1. Count the devices connected to the control system that consume air.
2. List the model and function of each device.
3. Look up the air use (in scim) in the factory manuals.
4. Total the air consumption of your control system (in scim).
5. Divide the scims (standard cubic feet per minute) by 1728 to determine cfm.
6. Multiply the cfm by 3 (this will give you the recommended 1/3 run time needed to assure maximum life and drier supply air).

For exact replacement:

1. Try to find the exact model # and brand of the compressor you’re replacing.
2. Determine anything special about the existing installation (voltage, accessories, special size tank piping, air station components, etc.).

MINIMUM ordering specifications:

1. Capacity (delivered cfm output desired).
2. Size (hp of the compressor).
3. Tank size (in gallons).
4. Voltage and phase of the compressor motor.
5. Simplex or duplex (one pump or two mounted on the tank. Duplex gives you longer life and standby capacity in the event of a pump failure).
6. Type of compressor (lubricated or oil-less).
7. Pre-mounted, pre-piped drier option (saves installation time).
8. Any air station accessories needed (regulators, condensate drains, relief valves, oil and air filters, pressure gauges, etc.).
9. Installation accessories (tank vibration pads, fittings, tubing, teflon tape, restrictors, in-line check valves, tubing tools, mounting clips, ty-wraps, spring clips, etc.).