Linear J-S - Manual (Page 4)

Before starting the installation of the operator, the door must be in
good working condition and properly counterbalanced. Inspect the
door and track for loose or missing hardware. Test the door
manually for balance and ease of operation. Lubricate door hinges
and rollers. If necessary, employ a qualified technician to adjust the
springs for proper counterbalance of the door.
Stops should be installed at the top end of each track to prevent the
possibility of the door rollers moving beyond the ends of the track.
If the cross header shaft is made from hollow tubing rather than
solid rod, it is recommended that it be plugged with a short length of
solid bar for a more secure installation of the shaft sprocket or
flange coupler.
Before removing the operator powerhead from the shipping carton,
inspect the nameplate on the cover of the operator control box to
verify that it is the correct model for the intended application
and that the voltage and phase are in accordance with
electrical power provided at the job site. If the operator was
ordered with the optional chain hoist, Model H-S, see that it is
so equipped. A chain hoist CANNOT be added in the field.
Warning: Rope off the area to keep personnel and
vehicles clear of the door and floor space in the vicinity of
the operator during the installation.
ELECTRIC DOOR OPENERS ARE DESIGNED
FOR DOORS IN GOOD WORKING CONDITION,
PROPERLY COUNTERBALANCED AND
PROPERLY ADJUSTED IN ACCORDANCE
WITH THE DOOR MANUFACTURER'S
INSTALLATION INSTRUCTIONS.
WARNING
SPRINGS ARE SUBJECT TO VERY
HIGH FORCES AT ALL TIMES AND
ADJUSTMENTS MUST BE MADE
ONLY BY A QUALIFIED
PROFESSIONAL DOOR INSTALLER.
WARNING
REMOVE OR DISABLE ANY LOCKING
DEVICES FROM DOOR AND REMOVE
ALL ROPES
WARNING
COMPONENT IDENTIFICATION
107170
PREPARATION 4