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

EHJX Jackshaft type electric door operator has been designed by Doorlec Corporation to be used in hazardous locations where flammable vapours, combustible dust, or ignitable fibres or flyings may be present in the air in quantities sufficient to produce an explosion. To be used in conjunction with either sectional overhead, vertical lift, high-lift, or rolling curtain doors. Many other types of doors can be equipped with this operator providing the door has a shaft as the basic driving element.

Explosion Proof Three Button Control:
Momentary contact type for up, down, stop. Operator may be stopped in any position and door moved up or down from that position. Down button can be wired for constant pressure when specified. Control circuit 24V AC for users protection.

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

Reduction:
Rugged 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. Pulleys and sprockets are mounted on 1" (2.5cm) C.R. steel shaft rotating on high speed, precision, self-aligning pillow block bearings, for efficient long lasting hard working high traffic. Door operating speed approx. 1.0ft (.3m) per second.

Chain Hoist:
Equipped with a disconnect device which allows a person to disengage the operator from the door and operate the chain hoist from the floor by hand in the event of power failure without having to remove the drive roller chain. Limit switches will not go out of adjustment when hoist is used. Also provides safety mechanical interlock to protect operator and door when power is restored, and if push button is pressed accidentally, the door will not move until disconnect lever is place to electric mode.

Solenoid Brake:
To prevent door from coasting and secure locking of door in closed position.

Explosion Proof Limit Switches:
Rotary type friction free oilite bronze cams and precision micro switches, for automatic stopping of door in up and down position, easily adjustable without tools.

Reversing Contactor:
Heavy duty type.

Universal Mounting:
Right or left side.

Manual Overload Relay:
For overcurrent and under voltage protection (can be reset manually).

Explosion Proof Motors:
1/3 HP (248.6W), 1/2 HP (373W), 3/4 HP (559.5W) or 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. For hazardous locations. C.S.A. and U.L. approved.

Sideroom Required:
20" (50cm) minimum.

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



SPECIFICATIONS


Three Button Control:
Momentary contact type for open, close, stop, fully guarded, standard duty, 600V AC maximum. Screw type terminals. Explosion proof type for hazardous locations. Cast aluminium alloy housing for 7 D, 9 E, F, G, Class I, Group D, Class II, Group E, F and G, Class III, Division I and 2 areas. C.S.A. and U.L. approved.

Adjustable Automatic Friction Clutch:
4" (10cm) diameter aluminium disc attached to rotating shaft to one side of which a 4" x 1/8" (10cm x .31cm) disc of non-flammable clutch fibre material is applied. One 8" (20cm) H.D.V belt pulley is conpressed by means of heavy compression spring and castellated threaded nut, securely locked with 3/16" (4.8mm) cotter pin. Friction clutch system can be adjusted as required depending on door size and weight. Clutch will protect door and operator in case of obstruction.

Motor Control:
Heavy duty reversing contactor, two sets of three pole contactors on a common frame, mechanically interlocked to prevent simultaneous closure, clapper-type armature with three point suspension, auxiliary contacts SPDT or DPDT (as required) on each armature, coils 24V AC. Load contact amps, resistive @ 120V AC 15 amps, @ 240V AC 10 amps, @ 600 V AC 5 amps. Terminals .250" (.625cm) quick connect; mechanical life 10 million cycles.

Reduction:
This extra rugged power unit drive utilises one (5L) V belt, one 2" (5cm) and one 8" (20cm) type B die cast aluminium alloy pulleys balanced for smooth operation, for primary reduction Five 41B12 and three 41B36 steel sprockets with RC41 and RC40 roller chain (all sprockets pinned or keyed on 1" (2.5cm) C.R. steel shaft) rotating in six 1" (2.5cm) precision self-lubricating, self-aligning, high speed pillow block bearings, for secondary reduction to the output drive shaft. Door operating speed approx. 1.0ft (.3m) per second.

Unit Chassis:
Heavy steel frame assembly is made from 2" x 2" x 1/8" (5cm x 5cm x .31cm) H.R. steel angles, reinforced with steel plates end welded together for greater strength.

Explosion Proof Limit Switches:
Rotary type friction free oilite bronze cams, grooved and lock guided in a spring loaded formed galvanised steel plate. Cams are fitted on 5/8" d. x 10-3/4" I. (2.05cm x 26.88cm) C.R. steel shaft with N.F. threads which rotates in lubricated high speed ballbearings. Cams on their preset travel, activate the micro switches to cut power of motor control in both open and close directions of door. Operating force on limit switches 4 oz. (113.4g) maximum, contact separation .020" (.05cm); terminations .250" (.625cm) quick connect.

Manual Overload Relay:
Protects operator from overcurrent and under voltage; can be reset manually.

Electrical Control Cabinet:
Made from cast aluminium alloy, explosion proof type for hazardous locations. Classifications 7 D, 9 E, F, G, Class I, Group D, Class II, Group E, F and G, Class III, Division I and 2 areas. C.S.A. and U.L. approved. Size 10" x 8" x 6" (25cm x 20cm x 15cm) interior dimensions, enclosing all electrical components. Factory pre-wired and mounted to unit chassis with four zinc plated bolts. Electrical wiring from motor to this cabinet are concealed by means of explosion proof fittings, junction boxes, unions, and flexible conduits. All C.S.A. and U.L. approved. Removable cover for easy service and maintenance.

35VA Step-Down Transformer:
120V AC primary to 24V AC secondary.
240V AC primary to 24V AC secondary.
208V, 230V, 416V, 460V, 600V AC primary to 24V AC secondary.

Emergency Chain Hoist:
Combined with a floor operated disconnect which when pulled will disconnect the electrically driven solenoid brake and engage the chain hoist for manual operation in the event of power failure, without having to remove the main drive chain. Assembly consists of one grooved aluminium pocket wheel, lever arm, one coupling, 1/8" (.31cm) D. pull cable, 7/16" (11.1mm) D. bright polish chain, wall chain keeper and disconnect arm.

Heavy Duty Solenoid Brake:
Made from one 4" (10cm) diameter aluminium alloy wheel mounted on keyed motor shaft, lined brake shoes with 360o exterior compressing force, through spring loaded mechanism. Brake drum stops door when electromagnetic solenoid is deenergized. Mounted on heavy duty steel plate, protected in 14 ga. steel enclosure. Brake mechanism is on the self-adjusting type.

Safety Electrical Interlock:
Where floor operated disconnect lever arm is in manual position the secondary drive through coupling mechanism is free, permitting door and operator to be independent from each other. Those given safety mechanical interlock to protect operator and door when power is restored and push button is pressed accidentally. Limit switches will not go out of adjustment when door is used manually.

Explosion Proof Motor:
Rated for continuous duty (capacitor starting on single phase models) 1/3 HP (248.6W), 1/2 HP (373W), 3/4 H.P. (559.5W) or 1 H.P. (746W), 120V or 240V single phase, 208V, 230V, 416V, 460V or 600V three phase. 1725 RPM, ballbearings permanently lubricated. Frame rigid type 56C, shaft 5/8" (2.05cm) diameter. 1 HP (746W) not recommended on single phase motors. Other voltages available on request. For hazardous locations. C.S.A and U.L. approved.

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