Chamberlain PD300DM Manuale Utente

2

When you see these Safety Symbols and Signal 
Words on the following pages, they will alert you to 
the possibility of serious injury or death if you do 
not comply with the warnings that accompany them. 
The hazard may come from something mechanical 
or from electric shock. Read the warnings carefully.

When you see this Signal Word on the following 
pages, it will alert you to the possibility of damage to 
your garage door and/or the garage door opener if 
you do not comply with the cautionary statements 
that accompany it. Read them carefully.

This garage door opener has been designed and tested to offer safe service provided it is installed, operated, 
maintained and tested in strict accordance with the instructions and warnings contained in this manual.

Safety symbol and signal word review ....................... 2

Preparing your garage door ....................................... 3

Tools needed .............................................................. 3

Planning  ................................................................. 4-5

Carton inventory ......................................................... 6

Hardware inventory .................................................... 7

Assemble the rail and install the trolley ...................... 8

Fasten the rail to the motor unit and 
install the idler pulley .................................................. 9

Install the chain/cable ............................................... 10

Tighten the chain .......................................................11

Installation safety instructions ...................................11

Determine the header bracket location .................... 12

Install the header bracket ......................................... 13

Attach the rail to the header bracket ........................ 14

Position the opener .................................................. 15

Hang the opener ....................................................... 16

Install the door control .............................................. 17

Install the light .......................................................... 18

Attach the emergency release rope and handle ...... 18

Electrical requirements ............................................. 19

Install The Protector System

®

.............................. 20-22

Fasten the door bracket ...................................... 23-24

Connect the door arm to the trolley ..................... 25-26

Adjust the travel limits .............................................. 27

Adjust the force ........................................................ 28

Test the safety reversal system ................................ 29

Test The Protector System

®

 ..................................... 29

Operation safety instructions .................................... 30

Using your garage door opener ............................... 30

Using the wall-mounted Door Control ...................... 31

To open the door manually ....................................... 31

Care of your garage door opener ............................. 32

Having a problem? ................................................... 33

Diagnostic chart ........................................................ 34

To add or reprogram a hand-held remote control .... 35

To erase all codes .................................................... 35

3-Button Remotes .................................................... 35

To add, reprogram or change 
a Keyless Entry PIN ................................................. 36

Rail assembly parts .................................................. 37

Installation parts ....................................................... 37

Motor unit assembly parts ........................................ 38