Instruction/ maintenance manual of the product L404T Honeywell
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PRODUCT DATA ® U.S. Registered Trademark © 2004 Honeywell International Inc. All Rights Reserved 71-2429—2 L404F,T,V PressureTrol ® Controllers APPLICATION L404F PressureTrol ® Controllers provide operating con trol with automatic limit pr otection for pressure systems of up to 2070 kPa, or 300 psi.
L404F ,T ,V PRESSURET ROL ® CONTROLLERS 71-2429—2 2 ORDERING INFORMATION When purchasing replacement and modernizat io n products from your TRADELINE® whol esaler or distributor , refer to the TRADELINE® Catalog or price sheets for complete ordering number .
L404F ,T ,V PRESSURET ROL ® CONTROLLERS 3 71-2429—2 T able 2. Conversion T able. T able 3. Switch Ratings (Amperes). Pressure Sensin g Element: S tainless steel diaphragm (140 to 2070 kPa mode ls) has brass bellows. Maximum Ambient T emp erature: 66°C (150°F).
L404F ,T ,V PRESSURET ROL ® CONTROLLERS 71-2429—2 4 IMPORT ANT When making pipe connecti ons, use pipe dope sparingly to seal the join ts; any excess dope may clog the small hole in the fitting and prevent the controller from operating properly .
L404F ,T ,V PRESSURET ROL ® CONTROLLERS 5 71-2429—2 Fig. 4. Mounting an oil pressure control ler directly on the main pipe. Using with Preheated Oil When used with preheated oil, a siphon loop (part number 14026) must always be connect ed between th e controller and the main pipe (see F ig.
L404F ,T ,V PRESSURET ROL ® CONTROLLERS 71-2429—2 6 Fig. 8. L404T ,V terminal b locks and internal sche matics. Fig. 9. Hook up of an oil pressure co ntroller used on a single burner system with an integral oil pump. Fig. 10. Hookup of an oil pressure controller used on a single burner or multiburner system with an exter nal oil pump.
L404F ,T ,V PRESSURET ROL ® CONTROLLERS 7 71-2429—2 CHECKOUT After the controller has been installed, wired and adjusted, it should be tested with the system in operation. Fi rst, allow the system to stabilize. Then, observe the operation of the controller while raising and loweri ng its setpoint.
71-2429—2 G .R. Rev . 09 -04 www .ho neywell.com Automation and C ontrol Solutions Honeywell Internatio nal Inc. Honeywell Limited-Honeywe ll Limitée 1985 Douglas Drive North 35 Dynamic Drive Golde.
An important point after buying a device Honeywell L404T (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell L404T yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell L404T - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell L404T you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell L404T will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell L404T, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell L404T.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell L404T. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell L404T along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
