Chamberlain 3595S User Manual

Page of 36
7
ASSEMBLY STEP 4
Tighten the Chain
•  
Spin the inner nut and lock washer down the threaded 
shaft, away from the trolley.
•  
To tighten the chain, turn outer nut in the direction 
shown. As you turn the nut, keep the chain from 
twisting.
•   
When the chain is approximately 1/2" (13 mm) above 
the base of the rail at its midpoint, re-tighten the inner 
nut to secure the adjustment.
Sprocket noise can result if chain is either too loose 
or too tight.
When installation is complete, you may notice some chain 
droop with the door closed. This is normal. If the chain 
returns to the position shown when the door is open, do 
not re-adjust the chain.
NOTE: During future maintenance, ALWAYS pull the 
emergency release handle to disconnect trolley before 
adjusting chain.
You have now finished assembling your garage door 
opener. Please read the following warnings before 
proceeding to the installation section.
To Tighten
Inner Nut
Lock
Washer
To Tighten Outer Nut
Inner Nut
Trolley
Chain
Base of Rail
1/2" (1.27 cm)
Outer Nut
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNING
WARNING
1.  READ AND FOLLOW ALL INSTALLATION WARNINGS 
AND INSTRUCTIONS.
2.  Install garage door opener ONLY on properly balanced 
and lubricated garage door. An improperly balanced 
door may not reverse when required and could result in 
SEVERE INJURY or DEATH. 
3.  ALL repairs to cables, spring assemblies and other 
hardware MUST be made by a trained door systems 
technician BEFORE installing opener.
4.  Disable ALL locks and remove ALL ropes connected to 
garage door BEFORE installing opener to avoid 
entanglement.
5.  Install garage door opener 7 feet (2.13 m) or more 
above floor.
6.  Mount emergency release handle 6 feet (1.83 m) above 
floor.
7.  NEVER connect garage door opener to power source 
until instructed to do so. 
  8.  NEVER wear watches, rings or loose clothing while 
installing or servicing opener. They could be caught in 
garage door or opener mechanisms.
  9.  Install wall-mounted garage door control:  
 
• within sight of the garage door. 
 
•  out of reach of children at minimum height of 5 feet 
(1.5 m).
 
• away from ALL moving parts of the door.
10.  Place entrapment warning label on wall next to garage 
door control.
11.  Place manual release/safety reverse test label in plain 
view on inside of garage door.
12.  Upon completion of installation, test safety reversal 
system. Door MUST reverse on contact with a 
1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on 
the floor.
1/2" (13 mm)