Chamberlain MH5011U-RH Installation Manual page 9

TYPICAL INSTALLATION
INSTALL THE OPERATOR
3
Wrap drive chain around door sprocket.
Master Link
Position the operator until chain is taut
5
(not tight). If chain is too tight, it may
cause damage to operator.
Door Sprocket
Drive Chain
Door Sprocket
Operator Drive
Sprocket
Door Sprocket
Door
9
4
Wrap drive chain around operator sprocket.
Drive Chain
Operator Drive
Sprocket
6 Keep door sprocket and operator door
sprocket aligned. If sprockets are not
Key
aligned, they may cause premature
wear on the chain.
Key
7 Secure both sprockets with key and set screw. If sprockets
are not secure, they may drift and cause damage to operator.
8 Secure operator to mounting surface using appropriate
method and hardware. Mounting template can be found on
carton.
Door Sprocket
Electrical Box
Set Screw