Instruction/ maintenance manual of the product ML6874 Honeywell
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ML6874 Valve Actuator PRODUCT DATA GENERAL The ML6874 is a self-contained, self-adjusting, linear motorized linkage that mounts directly onto V5011 two-way or V5013 three-way valves and provides up to 19 mm (3/4") of linear travel (stem lift). For use with low voltage 3-wire SPDT Series 20 (on-off) or Series 60 (floating) controllers.
ML6874 SPECIFICATIONS • ORDERING INFORMATION Specifications IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances.
ML6874 SPECIFICATIONS •INSTALLATION FIG. 1 -- DIMENSIONS OF ML6874 VALVE ACTUATOR IN MM (INCHES). Installation FIG.2 -- MINIMUM MOUNTING CLEARANCE. ! CAUTION 1. Installer must be a trained service technician. 2. DO NOT electrically operate the ML6874 before assembly to the valve because damage not apparent to the installer may occur.
ML6874 INSTALLATION FIG.3 -- PREPARATION FOR VALVE ASSEMBLY. 5. Remove the plastic cover from the ML6874 by loosening the two screws located on the top (Note: These screws are captive.
ML6874 WIRING 3 SPDT Controller 2 ML6874 28 Vdc OR + T6 T5 24 Vac 1 L1 L2 T5 T6 W R B Caution: In multiple actuators connection, power supply to all actuators must be connected in a TRUE parallel fashion to reduce excessive voltage drop. DO NOT "daisy chain" i.
ML6874 OPERATION AND CHECKOUT Operation and checkout Operation: The recommended valve actuator power source is a class 2, 24V transformer or 28Vdc across terminals T5 &T6. Internal circuitry provides dc power for the electronic sensing and drive motor circuits.
An important point after buying a device Honeywell ML6874 (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 ML6874 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 ML6874 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell ML6874 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell ML6874 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell ML6874, 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 ML6874.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell ML6874. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell ML6874 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
