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4 (102)
1-7/8 (47)
1-5/8
(41)
5-1/2
(140)
6
(153)
Fig. 1. ML7999 dimensions in in. (mm).
10-5/16
(277)
4-27/32 (123)
2-1/2 (64)
Fig. 2. V5197A Firing Rate Gas Valve, with
mounting bracket (included) and ML7999 Actuator
(not supplied), dimensions in in. (mm).
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.
7/8 (22)
3-1/2 (89)
1/4-28
unF
1/2
(13)
M16466
7-1/8
(181)
3-25/32
(96)
6-7/16 (165)
M17528
ML7999A UNIVERSAL PARALLEL-POSITIONING ACTUATOR
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe personal
injury, or death.
Tighten the hub setscrews to a torque of
60 lb-in. (7 N•m).
WARNING
Electrical Shock Hazard.
Can Cause serious injury or death.
Disconnect power supply before installation.
Location
CAUTION
Actuator Damage Hazard.
Deteriorating vapors and acid fumes can damage
the actuator metal parts.
Install actuator in areas free of acid fumes and other
deteriorating vapors.
Mounting ML7999 Actuator
The actuator mounts on a 1/2 in. round or square shaft. For
shafts smaller than 1/2 in, self-centering adapters are
available for 5/16 in. and 3/8 in. shafts. For shafts larger than
1/2 in., adapters are available for 5/8 in., 3/4 in., and 9/16 in.
CAUTION
Equipment Damage Hazard.
Lateral forces on actuator hub will damage
actuator.
Ensure actuator is mounted with shaft centered in
actuator hub.
1. Place the actuator over the shaft, see Fig. 3.
2. Position and seat the actuator.
3. Rotate the shaft to match the actuator position.
4. Install the mounting bracket accessory (not included),
if needed. See Fig. 4.
5. Partially tighten hub setscrews to ensure actuator
seats firmly against mounting bracket with shaft
centered in hub.
6. Tighten the anti-rotation bolt to the torque
recommendation for the selected bolt/nut.
7. Tighten the hub setscrews against the shaft to a torque
of 60 lb-in.
3
65-0239—2
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