INTRODUCTION
Congratulations on purchasing the Mastercraft® Chain Drive Garage Door Opener – a garage
door opener with many innovative features. Features include: extremely quiet operation with
DC motor; automatic force adjustment so the door can be closed with just the right amount
of force, not overpowered; and a state-of-the-art safety reversal system that protects your
family and property near the door.
Important Safety Information
The documentation provided with your opener has been carefully designed and organized
to make the assembly, operation and continued maintenance of your product as easy and
safe as possible. Assuring an extended life of this product is based upon the installation,
operation, maintenance and testing in strict accordance with the instructions and warnings
stated in this manual. Read and follow all guidelines and operating instructions before using
this product. Store the manual in a safe and easily-accessible location for future use.
Safety Symbol Overview
WARNING
This type of warning symbol is used to indicate possible mechanical hazards that may cause
serious injuries or death.
CAUTION
This type of warning symbol is used to indicate the possibility of damage to the garage door
or opener.
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