Linear HSLG, Installation Manual

HSLG OPERATOR INSTALLATION GUIDE

- 8 -

ELECTRICAL CONNECTION AND ADJUSTMENTS

All LINEAR gate operators are supplied with a power disconnect switch to turn on and off the power supply available to the 
operator. Incoming power should be brought into the operator and connected to the labeled pigtails in the disconnect box 
following wiring specifi cations on page 

4

. A wiring connections print can be found on the inside cover of the operator.

Proper thermal protection is supplied with the operator. The motor contains a thermal overload protector to protect from 
overheating the motor due to overload or high-frequency operation. This overload will automatically reset after the motor 
cools down.

LIMIT NUT ADJUSTMENTS

The limit nuts are not preset at the factory and must be adjusted for the length of the gate the operator is installed on. The 
limit switches are activated by two threaded nylon rotary limit nuts which are attached to a threaded shaft and driven by chain 
and sprockets from the main drive shaft. Remove the cardboard fi ller before attempting to adjust the limit nuts.

With the gate connected to the gate operator in a mid-travel position, and the power disconnect switch turned 

OFF

, discon-

nect the operator by using the manual disconnect lever. Instructions for the manual disconnect can be found in the individual 
operator owner’s guides. 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).

Once the gate is in this position, adjust the open limit nut until it activates the limit switch for open, 

LSO-1

. Press down on 

the detent plate and rotate the nut along the threaded shaft. Refer to the illustration below for additional details.

Once the open limit nut is set, repeat the above process for the close direction nut and the 

LSC-1

 limit switch.

After fi nishing the initial limit nut adjustments, reposition the gate to approximately its center of travel.  Re-engage the operator 
and turn the power disconnect 

ON.

 Stand clear of any moving parts and press the 

OPEN

 button on the three-button station. 

If the gate begins to close instead of open, press the 

STOP

 button immediately. Find the dip switch block on the main control 

board and switch the hand of operation (dip switch #4, see page 

9

) and try to open the gate again. Observe the gate as it 

runs through a complete cycle in both directions, and adjust your limits again if necessary. Fine levels of adjustment can also 
be achieved by adjusting a few teeth on the nut at a time. If the gate stops in mid travel, the open or close current sensor 
adjustment or the maximum run timer may need adjustment (see page 

11

).

Power supply must be of correct voltage and phase.
Always disconnect power from operator before servicing.
Keep clear of gate during operation.

POWER DISCONNECT BOX

(115VAC VERSION SHOWN)

L1

(WHITE)

L2

(BLACK)

GROUND

(GREEN)

ON A RIGHT-HAND OPERATOR:
OPEN LIMIT SWITCH IS THE ONE CLOSER
TO THE FRONT OF THE OPERATOR. ON A 
LEFT-HAND OPERATOR, THE OPEN LIMIT 
SWITCH IS THE ONE FURTHEST AWAY
FROM THE FRONT OF THE OPERATOR.

LIMIT SWITCHES

LIMIT NUTS

ROTARY LIMIT BOX ASS’Y
(SWITCHES AND BOX MAY
LOOK SLIGHTLY DIFFERENT
DEPENDING ON MODEL)