Residential
Electric Door and Gate Operators

Commercial-Industrial
Trolley type-ceilling, Wall Mounts, B1-Parting, Sliding Doors Electric Operators

Waterproof
Trolley Type-Ceillling and Jack-Shaft-Wall Mount

Explosion-proof
Trolley Type-Ceillling and Jack-Shaft-Wall Mount

Sliding Gate
Electric Operators

Swing Gate
Electric Operators

Trafic control barriers
To control of vehicular traffic in private and public parking areas.

Rolling &Fire Doors
Rolling Service Doors & Fire Doors. Jack Shaft - Wall Mount

Accessories
Different accessories for your needs

Safety Devices
Reverse Systems and Sensor

Entry-Exit Devices
Loop Detectors, Card Reader and more

Operating Controls
 

Modifications
 

Special applications
 
 

GENERAL INFORMATION

Model ETHW waterproof, dust-tight, trolley-type electric door operator has been developed primarily for car-wash applications or any other location where the atmosphere contains dust, oil, liquid vapours or water. Suitable for standard lift sectional overhead doors.

Three Button Control:
Momentary contact type for open, close, stop. May be stopped in any position and door moved up or down from that position. Close button can be wired for constant pressure when specified. Control circuit 24V AC Class II for user's protection.

Adjustable Friction Clutch:
Will protect door and operator in case of obstruction.

Limit Switches:
Rotary type with "oilite" bronze cams and precision micro switches for automatic stopping in open and closed positions. Easily adjustable without tools.

Reversing Contactor:
Heavy duty type.

Reduction System:
The power unit of this operator utilizes a large 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 on high speed self-lubricating, self-aligning pillow-block bearings for efficient, long lasting, hard-working, high-traffic operation. Door operating speed approx. 1.0 ft (.3m) per second.

Dual Trolley:
Cast aluminium alloy chain driven carriage, slides in a dual heavy steel angle tracks, with continuous 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 (without tools) for manual operation in the event of power failure.

Motor:
1/3 H.P. (249W), 1/2 H.P. (373W), 3/4 H.P. (560W) or 1 H.P. (746W), 115V. or 230V., 1 phase, 208V., 230V., 416V., 460V. or 550V., 3 phase. 1 H.P. (746W) not recommended for single phase motors.

Manual Overload Relay:
For over-current and under voltage protection. Manual reset.

Headroom Required:
2-1/2" (6.35cm) minimum from door's highest arc of travel.

Backroom:
4'7" (140cm) plus door height.

Finish:
Primed with rust-proof primer and spray painted in blue hammer-tone enamel.



SPECIFICATIONS


Three Button Control:
Momentary contact type for open, close, stop. Fully guarded, weatherproof, 250V. A.C. maximum. Screw type terminals.

Motor Control:
Heavy duty reversing contactor, two sets of three pole contacts on a common frame, mechanically interlocked to prevent simultaneous closure. Clapper-type armature with three point suspension, DPDT auxiliary contacts, on each armature. Holding coils 24V. A.C. Contact rating: resistive: 15 amps @ 120V. A.C., 10 amps @ 240V. A.C., 5 amps @ 600 V. A.C.; inductive: 2 H.P. (1493W) max. Terminals .25" (.63cm) quick connect. Mechanical life: over 10 million cycles.

Adjustable Friction Clutch:
4" (10cm) D, aluminium disc attached to rotating shaft covered on one side with 4" x 1/8" (10cm x .32cm) non-flammable clutch fibre material, compressed against 8" (20cm) V-belt pulley by means of heavy compression spring and castellated, threaded nut. Securely locked with 3/16" (4.88mm) cotterpin. Friction clutch system can be adjusted easily, as required, depending on door size and weight. Friction clutch will protect door and operator in case of obstruction.

Electrical Control Cabinet:
Factory pre-wired, made of sheet metal; construction of suitable rigidity designed to meet EEMAC and C.S.A. classifications type 12 and 4. Size: 8" x 10" x 5" (20cm x 25cm x 13cm) with removable cover for easy servicing and maintenance. Mounted on unit chassis with four zinc plated steel bolts.

Limit Switches:
Rotary type, friction free "oilite" bronze cams, grooved and lock guided in a formed galvanised steel plate. Cams are fitted on 5/8" (1.59cm) x 10-3/4" (26.88cm) C.R. threaded N.F. steel shaft rotating on lubricated high speed ball bearings. Cams on their preset travel activate micro switches to cut power off motor control, in both open and close directions of door. Operating force on limit switches: 4 oz. (113.4g) maximum. Contact separation: .020" (0.05cm). Pre-travel: .250" (.625cm). Termination: .250" (.625cm) quick connect.

Reduction:
This extra rugged power unit drive utilises one (5L) V belt, one 2" (5cm) and one 9" (22.8cm) type B die-cast aluminium alloy pulley, balanced for smooth operation, for primary reduction; two steel sprockets, 41B12 and 41B36, with RC41 roller chain, mounted on 1" (2.5cm) C.R. steel shaft, rotating on four 1" (2.5cm) self-lubricating, self-aligning, high speed pillow block bearings, for secondary reduction to the output drive shaft. All sprockets and pulleys pinned or keyed to shafting. Door operating speed approx. 1.0ft (.3m) per second.

Unit Chassis:
This heavy steel frame assembly, made of 2" x 2" x 1/8" (5cm x 5cm x .31cm) H.R. steel angles, is reinforced with steel plates, bolted together for greater strength.

Trolley Assembly:
Made from 2" x 2" x 1/8" (5cm x 5cm x .31cm) steel plates, bolted together with 3/8" (9.5mm) H.R. steel rods. Cast aluminium alloy chain driven carriage, slides between dual angle tracks with continuous No. 41 push and pull roller chain, for smooth and friction free operation. In addition, a roller spreader is provided to support trolley at centre and prevent chain from rubbing.

Quick Release Door Lifting Arm:
1" x 3/8" (2.5cm x .93cm) H.R. steel bar bent 90o, adjustable to suit headroom with spring loaded hook, attached to aluminium door bracket. This arm quickly disengages operator trolley from door without tools, for manual operation in the event of power failure.

Manual Overload Relay:
Protects operator from over-current and under voltage. Manual reset.

25 V.A. Step-Down Transformer:
120V., 240V. A.C. primary to 24V. A.C. secondary, Class II.
208V., 230V., 416V., 460V., 600V. A.C. primary to 24V. A.C. secondary, Class II.

Motor:
Rated for continuous duty (capacitor start on single phase models) 1/3 H.P. (249W), 1/2 H.P. (373W), 3/4 H.P. (560W) or 1 H.P. (746W), 115V. or 230V. single phase; 208V., 230V., 416V., 460V. or 550V. three phase, 1725 RPM, ball bearings permanently lubricated, frame rigid type 56, shaft 5/8" (1.59cm) diameter. 1 H.P. (746W) not recommended for single phase motors.

Unit is factory pre-wired, colour coded and tagged.
Wiring diagrams are enclosed with each operator.
Operator is pre-run and tested before shipment.