FIGURE 4
FIGURE 5
“C” BRACKET
STEP 3
FASTENING THE RAIL ASSEMBLY TO THE POWER HEAD
Place
the rail assembly onto the power head chassis by lining up the sprocket assembly
opening with motor shaft. Make sure the shaft engages teeth inside sprocket assembly.
Press rail assembly down firmly onto shaft and power head chassis. DO NOT HAMMER!
Fasten
2 "C" brackets over rail assembly and onto chassis. Flanges on "C" brackets must
fit into the four recessed areas on chassis. The rail assembly must be at a right angle to
the power head for the "C" brackets to fit properly. See Figure 3
Insert
6 X 14 mm chassis screws through "C" bracket holes and into chassis holes, and
tighten screws by hand with a phillips screw driver. The “C” brackets must firmly hold rail
assembly to chassis. See Figures 3, 4.
Do not
remove tape around the trolley and straight power arm until Step 9. The trolley
has been taped at the correct location so that the belt or chain position tab will activate the
position switch, and opener computer correctly. The activation begins when the opener
opens the door, from the closed position, for the first time. See Figure 5
Place
power head on stepladder, positioning front of rail assembly on torsion tube (or on
torsion spring if side mounted) for stability. See Figure 5
Position
rail assembly end-stop within the opener header bracket and insert clevis pin
through the end-stop and opener header bracket. Attach the
cotter ring to the end of the clevis pin. See Figure 6
STEP 4
FASTENING THE RAIL ASSEMBLY TO THE OPENER HEADER BRACKET
FIGURE 3
FIGURE 6 (Top View)
6 X 14 mm
CHASSIS SCREW
POWER HEAD CHASSIS
RAIL ASSEMBLY
“C” BRACKETS
SPROCKET
ASSEMBLY
OPENING
POWER HEAD
6 X 14 MM CHASSIS
SCREW
POWER HEAD CHASSIS
MOTOR
SHAFT
POSITION SWITCH
OPENER HEADER BRACKET
CLEVIS PIN
COTTER RING
OPENER HEADER BRACKET
RAIL ASSEMBLY
POWER HEAD
LADDER
CURVED POWER ARM
TOP DOOR SECTION
TOP DOOR
SECTION
R
AI
L
AS
SE
M
BL
Y
TIE
END STOP
TORSION TUBE
TORSION SPRING
“TAPE AROUND TROLLEY”
(DO NOT REMOVE UNTIL
STEP 9)
“C” BRACKET
SPROCKET
OPENING
COPYRIGHT © 2003 MARTIN DOOR
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