Chamberlain K75-39337, Instructions Manual

12

TEST

NOTE:

 Refer to the Model LA500 operator manual for 

programming or installation instructions.

Bench test the arm.
1.  Connect the arm into an LA500 control box for testing.

a.  Wire the cables from the arm to the arm one connector of 

the LED circuit card in the LA500, following the wire colors 
listed on the board and shown on the connector.

b.  If the model of the ebox requires entrapment protection, 

connect a set of photoelectric sensors to the board to the 
close eyes input, and align the photoelectric sensors on the 
bench top.

c.  Place timer to close in the OFF position (fully 

counterclockwise).

d.  Place the reversal force setting to 1 o’clock.
e.  Disconnect the expansion board. 

2. Learn 

arm 

limits.

a.  Clear previous limits from the board by pressing and 

holding the set open and set close buttons simultaneously 
until the operator beeps. Both the set open and set close 
LEDs should be flashing.

b.  Place the gate toggle switch into the arm1 position.
c.  Using the move gate buttons, move the travel assembly to 

the outer limit of the arm. Press set close.

d.  Using the move gate buttons, move the travel assembly to 

the inter limit of the arm. Press set open.

e.  Make sure that both the set open and set close buttons are 

extinguished.

f.  If the arm fails to set limits, or presents an error code 

during this operation, there is either a problem with the 
assembly of the arm, or an additional failure within the 
arm.

3.  Perform a complete open and close cycle to the arm, making 

sure that no unusual noise is heard, and that the trolley 
smoothly moves from open to close limits and vice versa.
a.  Press the close button.

•  The travel assembly should move towards the outer 

limit.

•   The blue LEDs on the arm top should illuminate.

b. Press the open button.

•  The travel assembly should move towards the inter 

limit.

•   The blue LEDs on the arm top should illuminate.

c.  Listen to the trolley in motion to ensure that there are no 

interference or nuisance noises from the arm while the 
travel assembly is in motion. 

d.  The blue LEDs on the arm top should illuminate.

4.  If the arm passes these steps, it is ready for field placement.