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ML7425A,B SPRING RETURN ELECTRIC LINEAR VALVE ACTUATOR
CHECKOUT
The ML7425 Electric Linear Valve Actuator can be checked
out either directly or by using a controller.
Direct Checkout
1. Mount the actuator for the required application; see
Installation section.
2. Check the valve position and make sure that 24 Vac is
correctly applied to the actuator.
3. Apply the control signal to the appropriate leadwires to
move the valve in the opposite direction.
4. If the actuator does not move, make sure the actuator
is properly installed/wired.
5. If the actuator installation and wiring are both correct
and the actuator does not run, replace the actuator.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1.
Your local Home and Building Control Sales Office (check white pages of your phone directory).
2.
Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (612) 951-1000
In Canada—Honeywell Limited/Honeywell Limitée, 155 Gordon Baker Road, North York, Ontario M2H 3N7.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis MN 55408-0524
Honeywell Latin American Region
480 Sawgrass Corporate Parkway
Suite 200
Sunrise FL 33325
63-2518-3
Printed in U.S.A. 7-99
63-2518- 8
Controller Checkout
1. Adjust the setpoint of the controller to call for opening
2. If the valve is closed, it should begin to open.
3. If the valve remains closed, move the setpoint further
4. If the valve does not move, check for 24 Vac in the
5. If 24 Vac is present and the actuator does not operate,
6. If the wiring is correct, 24 Vac is present on the power
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 3N7
Honeywell Europe S.A.
3 Avenue du Bourget
1140 Brussels
Belgium
the valve. Observe the actuator.
toward the open setting.
actuator power input.
check the voltage across the controller leadwires to
determine if the device is miswired.
input terminals, and the actuator does not run, replace
the actuator.
Honeywell Asia Pacific Inc.
Room 3213-3225
Sun Hung Kai Centre
No. 30 Harbour Road
Wanchai
Hong Kong
www.honeywell.com
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