Installation; When Installing This Product; Location; Mounting - Honeywell ML7425A Series Product Data

Protection Standard:
IP54.
Insulation:
Protection Class II (24 Vac).
Approvals:
UL94-5V Flame Retardant.
Meets CE requirements.
Cable Entry:
Conduit connector and two knockouts are standard on
actuator case.
Actuator Material:
Cover: ABS-FR plastic.
Base: PBTP-FR plastic.
Yoke: Diecast aluminum.
Weight:
5.1 lb (2.3 kg).
Dimensions:
See Fig. 1.
5-5/15
(135)
2-11/16
(67)
1/2 (13) FPT
YOKE
DIAMETER
1-3/8 (35)
Fig. 1. Approximate dimensions of ML7425A,B
Electric Linear Valve Actuator in in. (mm).
ML7425A,B SPRING RETURN ELECTRIC LINEAR VALVE ACTUATOR
6-5/16
x
(161)
14-5/16
(364)
MINIMUM
CLEARANCE
11-1/4
(284)
7-5/8
(192)
M7892A
Accessories:
43191679-112 Single Auxiliary 220 Ohm Potentiometer.
43191679-111 Single Auxiliary 10 KOhm Potentiometer.
43191680-105 Dual Auxiliary Switch (for 24 Vac use only).
43196000-101 High Temperature Kit (1/2...11/2 in.
valves). Includes1/4 in. and 3/8 in. stem extenders.
The kit increases the temperature range
to 428°F (220°C).
43196000-102 High Temperature Kit (2...3 in. valves).
Includes1/4 in. and 3/8 in. stem extenders.
The kit increases the temperature range
to 428°F (220°C).

INSTALLATION

When Installing this Product...

1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment circuitry.
Disconnect power supply before installation.

Location

Install the actuator in a location that allows enough clearance
for mounting accessories and for servicing. See Fig. 1.
CAUTION
Equipment Damage Hazard.
Can damage actuator due to condensation or a valve
gland leak.
Install the actuator in a position above horizontal.

Mounting

1. Place the actuator on the valve with the U-bolt around
the valve collar. See Fig. 2.
2. Place the U-bolt against the valve collar and secure the
actuator to the valve by turning each U-bolt nut
clockwise. To assure even pressure on the collar, first
tighten the nuts finger-tight and then alternate turning
each U-bolt nut until both are snug.
3. Push aside the stem button retaining clip and hold. See
Fig. 3.
4. Lift the valve stem until the head of the valve stem
button is inside the large slot of the stem button
retaining clip on the actuator.
5. Release the stem button retaining clip to secure the
stem button. Check to make certain the stem button is
secured by the retaining clip.
6. Remove the cover from the actuator, using a Phillips or
crosspoint screwdriver. See Fig. 4.
3
63-2518-3