Wayne-Dalton 3790-Z Drum Wrap Installation, Recommended Spring Turns, Tools Needed

Winding Spring(s)

(Continued)

RECOMMENDED SPRING TURNS

Tools Needed:

To wind the spring, rotate the winding shaft clockwise, while watching the mark on the winding shaft (or socket). Rotate the winding shaft to the required number of turns for your door or the number recorded during the Pre-Installation Inspection on page II. Place ratchet pawl in lower position. Then return to the right hand side and wind the right hand spring to the required number of turns or the number recorded during the Pre-Installation Inspection on page II. Place ratchet pawl in lower position.

IMPORTANT! DO NOT OVERWIND SPRINGS.

NOTE: Since total turns to balance door can deviate from spring turn chart values by ± 1/2 turns, adjustments to the recommended number of spring turns may be required AFTER rear hangers assembly is completed.

IMPORTANT! CAUTIOUSLY REMOVE VICE CLAMPS FROM VERTICAL TRACKS. ADJUSTMENTS TO THE RECOMMENDED NUMBER OF TURNS MAY BE REQUIRED. IF DOOR RAISES OFF THE FLOOR UNDER SPRING TENSION ALONE, THEN REDUCE SPRING TENSION UNTIL DOOR RESTS ON THE FLOOR. IF THE DOOR IS HARD TO RAISE OR DRIFTS DOWN ON ITS OWN, THEN ADD SPRING TENSION. AN UNBALANCED DOOR CAN CAUSE IDRIVE® OPERATION PROBLEMS.

IMPORTANT! IF YOU ARE INSTALLING THE IDRIVE® OPENER ON A NEW GARAGE DOOR, REAR SUPPORTS WILL NEED TO BE FABRICATED/ INSTALLED TO SUPPORT THE HORIZONTAL TRACKS. REAR SUPPORTS ARE CONSTRUCTED USING PERFORATED ANGLES, HEX HEAD BOLTS/NUTS AND THEN THE MUST BE SECURELY ATTACHED TO SOUND FRAMING MEMBERS WITH LAG SCREWS. FOR DETAILED INFORMATION ON CONSTRUCTING/ SUPPORTING THE REAR SUPPORTS, REFER TO YOUR DOORS INSTALLATION INSTRUCTIONS AND OWNER’S MANUAL.

Door Height	Spring Turns
6’-0”	14
6’-3”	14-1/2
6’-5”	15
6’-6”	15
6’-8”	15-1/2
6’-9”	15-1/2
7’-0”	16
7’-3”	16-1/2
7’-6”	17
7’-9”	17-1/2
8’-0”	18

PAWL KNOB

IN LOWER POSITION

Pawl Knob In Lower Position

®INSTALLATION FORTORQUEMASTER

®IDRIVE

13 Drum Wrap Installation

Tabs	Drum Wrap
	(Right Hand)

Left

Last Rib Cable

Drum

Drum

Wrap

Tools Needed:

Step Ladder

Un-snap the drum wrap hinged latch and rotate down.

IMPORTANT: Pull the counterbalance cable away from the header to clear the latch. Simultaneously slide the drum wrap against the last rib of the drum until the 3 tabs engage the third rib

Groove in

Drum

Counterbalance Cable Pull to clear latch

Hinged Latch

Re-engage the hinged latch by rotating upward until a distinct snap is felt.

Confi rm the catch is fully engaged by lightly tugging on it.

Repeat for the left hand side.

After completing this Step, continue with Step 14 on page 21.

Counterbalance Cable

3rd Rib

3 Catches

Secure Hinged

Latch

Please Do Not Return This Product To The Store. Call Us Directly! Our Trained Technicians Will Answer Your Questions and/or Ship Any Parts You May Need. 19 You can reach us Toll Free at 1-888-827-3667 for Consumer Assistance or online at www.wayne-dalton.com