Sentry DCC02 Installation And User Manual page 24

Motor Head Unit Installation Motor Head Unit Installation
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Step 1 - Fit the u-bolt over the motor unit stem as shown
Step 2 - Fasten the u-bolt to the tube by means of a tek screw
(a hole will now be made in the tube, locking the u-bolt
securely in place)
Step 3 - Fit the baseplate onto the ends of the u-bolt
Step 4 - Fit the washers and the nuts
Step 5 - Tighten the nuts, reasonably tight. DO NOT
OVERTIGHTEN
Once the motor is attached to the door, the tube may be reinserted into the
bracket and the steel retaining pin replaced. With the motor disengaged, the door
needs to be checked for balance, and if necessary, adjustments made.
Additionally if the door is light, it will be necessary to add weight at the bottom,
using a length of angled steel as listed under "Required Equipment"
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