Chamberlain HD930EV User Manual download pdf (Page 2)

Safety Symbol and Signal Word Review

This garage door opener has been designed and tested to offer safe service provided it isinstalled,

operated,maintained and tested in strictaccordance with the instructions and warnings contained in this

manual.

When you see these SafetySymbols and Signal Wordson the following pages,they will alert you to the

possibility of serious injury or death if you do notcomply with the warnings that accompany them.The

hazard may come from something mechanical or from electric shock.Read the warningscarefully.

Mechanical

Electrical

When you see this Signal Word on the following pages,it will alertyou to the possibility of damage to

your garage door and/or the garage door opener if you do notcomply with the cautionary statementsthat

accompany it. Read them carefully.

Check the Door

To preventpossible SERIOUS INJURY or DEATH:

ALWAYS call a trained door systemstechnician if garage door binds, sticks,or is outof balance.

An unbalanced garage door mayNOT reverse when required.

NEVER try to loosen, move or adjustgarage door, door springs, cables, pulleys, brackets or their

hardware, ALL ofwhich are under EXTREME tension.

Disable ALL locks and remove ALL ropes connected to garage door BEFORE installation and

operating garage door opener to avoid entanglement.

To preventdamage to garage door and opener:

ALWAYS disable locks BEFORE installing and operating the opener.

ONLY operate garage door opener at 120 V,60 Hzto avoid malfunction and damage.

Before you begin:

1. Disable locks and remove any ropes connected to the garage door.

2. Liftthe door halfway up.Release the door. Ifbalanced, itshould stay

in place,supported entirely by itssprings.

3. Raise and lower the door to check for binding or sticking.Ifyour door

binds, sticks,or is out of balance,call a trained door systems

technician.

4. Check the seal on the bottomof the door.Anygap between the floor

and the bottom of the door must not exceed 1/4 inch (6 mm).

Otherwise, the safetyreversal systemmay notwork properly.

5. The opener should be installed above the center of the door. Ifthere

is a torsion spring or center bearing plate in the wayof the header

bracket, it maybe installed within 4feet (1.2 m) to the left or rightof

the door center.See page11.

Torsion

Spring

Extension

Spring

Preparation

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Chamberlain HD930EV User Manual Page 2