Swinging Door Operators

Number 1501 Operator Unit
(Shown without optional cover)
Operators used on openings
between 7' 0" and 8' 6" in height
require a cover. Operator not
intended for openings less than 7' 0"
in height.

Number 1501EHD Operator Unit.
(Shown without optional cover).

Recommended Capacities of Number 1501 Operator
Operator Size	Single Swing Door In or Out (1 unit)			Pair of Swing Doors In or Out (2 units)			Headroom Required		Projection of Operation from Door* Inches	Seconds Required to Open Doors	Approx. Shipping Weight Pounds
	Maximum			Maximum			Operator Mounted on Door Inches	Operator Mounted Above Door Standard -- Special
	Opening Width Feet	Area Square Feet	Weight per Door Pounds	Opening Width Feet	Area Square Feet	Weight per Door Pounds	Operator Mounted on Door Inches	Operator Mounted Above Door Standard -- Special
1/2 hp	8	120	600	16	240	1200	3	19" - 9"	11	7 to 8	170
1 hp	12	210	1160	24	420	2300	3	19" - 9"	11	7 to 8	195
+ 1 hp	14	245	1350	28	490	-	3 1/2	24" - -	16	13 to 14	525
* It is often possible to cut a pocket in side wall to give necessary clearance + EXTRA HEAVY GEAR UNIT Note: Units are rated to operator in a max. wind pressure of 8 psf.

Designed for use on either single doors or pairs of swinging doors, these operators provide reliable door control under heavy usage conditions. The Number 1501 operator is used one per door, and is available in 1/2 and 1 hp sizes for either single or three-phase current. Three-phase current is highly recommended for best all around operation.

For doors opening "in", the operators are mounted to the face of the door. For doors opening "out", they should be mounted to the lintel above the doorway. For installations with insufficient headroom, the operator can be mounted to the outside face of the door with a weather-resistant cover (optional extra).

The doors are operated by a sturdy, simple crank and connecting arm movement using the harmonic motion principle for smooth, gradual starting and stopping.

A safety friction disc clutch drives the crank arm and helps protect doors, motors and others mechanisms from damage in case other door comes in contact with an obstruction. Door travel is controlled by automatic limit switches. When the doors are in a closed position, they are automatically locked. Manual operation is provided by a pull chain emergency release.

Correct speed for efficient, safe door operation
Instantly reversing ball bearing motor with reserve power
Heavy duty safety clutch to protect personnel and equipment
Precision built limit switch, with silver to silver contacts, for exact control of "open" and "close" limits
Top-quality cut gears that operate in a bath of oil
Harmonic arm action assures smooth, gradual starting and stopping action...an exclusive Crown Industrial "Aut-o-doR" feature
Top, NEMA-rated, reversing starter with double break silver to silver contacts--115 volt control circuit...with overload and underload protection...in steel cabinet with padlock attachment
Sturdy, reliable emergency release for manual operation
Optional selection of controls to give custom door control

1501 Specifications -

Typical 1501 Installation -

1501XHD Specifications -

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