Linear SLC, SLD Limit Nuts Rough Adjustment, Limit Nuts Fine Adjustment, RIGHT-HAND Installation

Operator Setup (Continued)

Limit Nuts Rough Adjustment

The limit nuts are not preset at the factory and must be adjusted for the length of 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 (see Figure 8).. REMOVE THE CARDBOARD FILLER BEFORE

ADJUSTING THE LIMIT NUTS.

The Controller is factory set for right hand installations.. The left limit nut is for OPEN and the right limit nut is for CLOSE.. The limit nuts flip their definition in left hand installations.. (see left-right hand programming on Page 11)..

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 9).

3.After setting the open limit, move the gate to one foot from fully closed and repeat the process for the CLOSE limit nut (see Figure 9).

Limit Nuts Fine Adjustment

After finishing the rough limit nut adjustments, reposition the gate to approximately the center of travel..

  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.

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).

LEFT-HAND INSTALLATION		RIGHT-HAND INSTALLATION
CLOSE LIMIT	OPEN LIMIT	OPEN LIMIT	CLOSE LIMIT
LIMIT			RIGHT-HAND
			OPEN
SHAFT
		LIMIT	DIRECTION
		SWITCHES
		LIMIT
		NUTS

Figure 8. Limit Box Assembly

PRESS DETENT

PLATE DOWN

ROTATE

LIMIT NUT

Figure 9. Setting the Limits

SLR • SLC • SLD  Slide Gate Operator Installation Guide - 6 - 227968 Revision X13 2-3-09