Instruction/ maintenance manual of the product ML7420 Honeywell
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PRODUCT DAT A 63-2533-03 ML6420, ML7420 Non-S pring Return Electric Linear V alve Actuators APPLICATION The ML6420 Non-S pring Return Electric Linear V alve Actuators are floating control actuators used with controllers that provide a switched or fl oating single-pole d ouble-throw (spdt) output.
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS 63-2533—0 3 2 ORDERING INFORMATION When purchasing replacement and modernizat io n products from your TRADELINE® whol esaler or distributor , refe r to the TRADELINE® Catalog or price sheets for complete ordering number .
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS 3 63-2533—0 3 T able 1. Close-off ratings for ML6420, ML7420 Ele ctric Linear V alve Actua tors and Honeywell V a lves (psi). a Represents maximum pressure difference between the outlet and either of the two inlets.
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS 63-2533—0 3 4 Fig. 2. Attaching actuator to valve collar . Fig. 3. Securing actuator to va lve. Fig. 4. Removing ac tuator cover . Wiri ng CAUTION Electrical Shock or Equipment Damage Hazard .
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS 5 63-2533—0 3 Fig. 7. ML7420 wiring usin g feedback output from a controller with a common tr ansformer . Fig. 8. ML7420 wiring using a 2 to 10 Vdc control signal and sep arate transformers .
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS 63-2533—0 3 6 Fig. 13. Replacing actuator cover . M17428.
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS 7 63-2533—0 3 Auxiliary Potentiometers The 43191679 Auxiliary Potentio meters can be used as feedback potentiometers and to provide remote indi cation of valve position. See the In stallation Instructions packed with the potentiometers.
ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS Automation and Control Solutions Honeywell Internationa l Inc. 1985 Douglas Drive North Golden Valley, MN 55422 customer.honeywell.com ® U.S. Registered T rademark © 201 1 Hone ywell International Inc.
An important point after buying a device Honeywell ML7420 (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 ML7420 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 ML7420 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell ML7420 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell ML7420 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell ML7420, 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 ML7420.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell ML7420. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell ML7420 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
