Ref. 5.670B_UK - 2014-02-19. www.axel-larsson.se
MANUAL
Electrial actuator AL 78-015 - AL 78-250
5.670B_UK - 1
Installation
1. Mounting on valve, see instruction A.
2. Electric wiring, see instruction B.
3. Adjustment, see instruction C.
4. Manual operation, see instruction D.
NOTE:
Only electric wiring, acc. to instruction B,
is required when the actuator is delivered
from Remote Control mounted on a valve.
It is adjusted and ready for operation.
A - Mounting on valve
1. Operate the valve manually to fully open or fully closed position before the
actuator is mounted.
2. Operate the actuator manually (see instruction D) to fully open or fully
closed position.
3. Check that the actuator and valve stem are in correct position. Please note,
valve and actuator must be in the same mode (fully open / fully closed) prior to
the assembly.
4. Mount the actuator on the valve and check that the actuator and valve stems
are centered and aligned. If a mounting bracket is
used, the t must be checked so that no distortion or play exists.
5. Operate the valve manually with the aid of the actuator handwheel and check
that the valve moves with normal resistance.
6. Check that all screws are correctly tightened
B - Electric wiring
NOTE: Electric wiring must be carried out
by qualied personnel only!
1. Loosen the screws on the cover and li it o.
2. Check the voltage marked on the actuator label.
3. Connect according to the enclosed wiring diagram or, if the actuator is of
standard design, according to the wiring diagram below. e wiring diagram is
drawn in unaected position (the valve in intermediate position).
4. Test run the actuator from the intermediate position checking that the actua-
tor turns in the correct direction.
5. Test run the actuator and check that the limit switches work correctly.
6. Check that the cable entries and possible blind plug are sealed.
7. Mount the cover.
C - Adjustment
1. Make the nal cam adjustments for the limit switches (if necessary) acc. to
instruction (a) below.
2. Make the nal adjustments of the mechanical limit stops (if necessary) acc. to
instruction (b) below.
3. Run the actuator from one end position to the other a number of times.
WARNING! Remove power before the
cover is dismantled! The actuator must
be handled with the utmost care when the
coverisremovedand thepowerconnected!
4. Adjust the indicator disc for visual indication so that it relates to the valve
position.
5. Test run the actuator and check that the limit indicators are working
correctly.
6. Mount the cover.
(a) Adjustment of cams for limit switches:
1. Operate the actuator manually to closed position.
2. Adjust the cam for closed position (lower cam marked CLS).
3. Operate the actuator manually to open position.
4. Adjust the cam for open position (upper cam marked OLS).
5. Test run the actuator.
(b) Adjustment of mechanical limit stops for soft-seated valves:
1. Operate the actuator electrically to closed position.
2. Adjust the right set screw for closed position so that it makes con-
tact, back one turn and tighten the lock nut.
3. Operate the actuator electrically to open position.
4. Adjust the le set screw for open position so that it makes contact,
back one turn and tighten the lock nut.
(For adjustment of metal-seated buttery valves, contact Axel Larsson)
(c) Adjustment of torque switches:
e torque switches are adjusted from factory to protect actuator
and valve against overloading and should normally not be adjusted.
Should adjustment however be necessary, please contact our us before
adjusting.
D - Manual operation
1. Pull the engagement lever towards the handwheel until it remains in
position.
2. Turn the handwheel until the valve reaches the required position.
3. Turn clockwise to close and anti-clockwise to open.
NOTE: e engagement lever returns automatically
to auto-position when the actuator is operated electrically.
