SD electric door operator is suitable for any single sliding industrial or fire door up to 400 sq. ft in area. It has a quick disconnect arm, spring loaded and can be disengaged from floor in the event of power failure. Fusible link is provided when used with sliding fire door.
Three Button Control:
Momentary contact type for open, close, stop. Operator may be stopped in any position and door moved in either direction from that position. Close button can be wired for constant pressure when specified. Control circuit 24V AC for users protection.
Adjustable Automatic Friction Clutch:
Will protect door and operator in case of obstruction.
With oilite bronze cams and precision micro switches for automatic stopping of door in open and closed positions (easily adjustable without tools).
Heavy duty type.
The power unit of this operator utilises a large size V belt (5L) and heavy pulleys for primary reduction, roller chain and steel sprockets for secondary reduction to the output drive shaft (mounted on 1″ (2.5cm) C.R. steel shaft) rotating in high speed, self-lubricating, self-aligning pillow block bearings, for efficient long lasting operation. Door operating speed approx. 1.0ft (.3m) per second.
Cast aluminium alloy chain driven carriage, slides in dual heavy steel angle tracks, with full No.41 push and pull roller chain, for smooth and quiet operation. In addition, a roller spreader is provided to support trolley and prevent chain from rubbing.
Quick Release Door Arm:
Quickly disengages operator from door at floor level (without tools), for manual operation in the event of power failure.
1/3 HP (248.6W), 1/2 HP (373W), 3/4 HP (559.5W), 1 HP (746W), 120V or 240V single phase, 208V, 230V, 416V, 460V or 600V three phase. 1 HP (746W) not recommended on single phase motors.
Manual Overload Relay:
For overcurrent and under voltage protection; can be reset manually.
Electro-Mechanical Instant Reverse Or Stop:
This built-in door load sensing device is optional equipment (at extra cost). If closing door meets an obstruction, door will instantly reverse and automatically stop at fully open position or, when specified, can be wired to stop door only. This system eliminates the use of air hose, air switch, retractable cord, etc.
To prevent door from coasting and to hold it in any position.
8″ (20cm) minimum above door track.
47″ (137.5cm) plus door width.
Primed with rust-proof primer and spray painted in blue hammertone enamel.