Linear HSLG-121 Installation Manual page 8

Operator Setup (Cont.)
Open and Close Limit Adjustment
The limit nuts are not preset at the factory and must be adjusted for the
gate in each installation. The limit switches are activated by two threaded
nylon rotary limit nuts which are attached to a threaded limit shaft driven
by a chain and sprockets from the main drive shaft. REMOVE THE
CARDBOARD FILLER BEFORE ADJUSTING THE LIMIT
NUTS.
The Controller is factory setup for right hand installations. The OPEN
limit switch is the one closer to the front of the operator. In left hand
installations, the CLOSE limit switch is the one closer to the front of the
operator (see Figure 9).
CAUTION
If the operator is installed in a left-hand installation. Set the
Controller to left-hand operation BEFORE running the operator
for the fine setting of the limit nuts. Failure to do so will result
in over-shooting the limit switches, and can cause damage to
the operator and/or gate. Refer to programming on Page 11.
Limit Nuts Rough Adjustment
Before running the operator, set the limit nuts as follows:
1. With the gate connected to the gate operator in a mid-travel
position, the power disconnect switch turned OFF, disconnect the
operator by using the manual disconnect lever, once the operator
has been disconnected, manually move the gate by hand to within
a foot of its fully open position (the foot of distance is necessary to
allow for coasting of the operator after the limit switch is tripped).
2. Once the gate is in this position, adjust the OPEN limit nut until it
activates the limit switch for open. Press down the detent plate and
rotate the nut along the threaded shaft (see Figure 10).
3. After setting the open limit, move the gate to one foot from fully
closed and repeat the process for the CLOSE limit nut.
Limit Nuts Fine Adjustment
After finishing the rough limit nut adjustments, reposition the gate to
approximately the center of travel.
1. Re-engage the operator using the disconnect handle.
2. Turn the power disconnect switch ON.
3. Stand clear of any moving parts and press the OPEN button.
4. After the gate opens, press the CLOSE button.
5. Observe the gate in both directions as it runs through each complete
cycle. Adjust the open or close limit nuts again if necessary. Fine
levels of adjustment can be made by adjusting a few teeth on the
nut at a time. If the gate stops during travel, you may need to adjust
the Open or Close Current Setting or the Maximum Run Timer (see
Pages 12-13).
Torque Limiter Adjustments
Before adjusting the torque limiter, make sure the gate is in good
working condition. One person should be able to move the gate by hand.
Be certain the gate moves freely and without binding throughout its
travel. Torque limiters are set light at the factory and must be adjusted
during installation. Adjust the torque limiter tight enough to keep it from
slipping during normal operation. See Figure 11.
To adjust the torque limiter in model HSLG:
1. Loosen the jam nut.
2. To increase the output, turn the adjustment nut clockwise
one flat, or 1/6 turn, at a time until desired output is obtained.
To reduce the output, turn the adjustment nut counterclockwise one
flat, or 1/6 turn, at a time until desired output is obtained.
3. Tighten the jam nut against the adjustment nut when finished.
HSLG Slide Gate Operator Installation Guide
RIGHT-HAND INSTALLATION
CLOSE LIMIT OPEN LIMIT
LIMIT
SHAFT
Figure 9. Limit Box Assembly
PRESS DETENT
PLATE DOWN
ROTATE
LIMIT NUT
Figure 10. Setting the Limits
MORE
TIGHTEN JAM NUT
DURING TESTING
AND WHEN FINISHED !!!
Figure 11. Torque Limiter Adjustment
- 6 -
LEFT-HAND INSTALLATION
OPEN LIMIT CLOSE LIMIT
LIMIT
SWITCHES
OPERATOR
LIMIT
NUTS
ADJUSTMENT NUT
JAM NUT
TO INCREASE TORQUE
TURN ADJUSTMENT NUT
CLOCKWISE ONE FLAT
THEN RE-TEST
LESS
TO DECREASE TORQUE
TURN ADJUSTMENT NUT
COUNTERCLOCKWISE
ONE FLAT THEN RE-TEST
FRONT OF
P1220 X14