1263 Operator Specification
1263 Aut-o-doR Vertical Lift Gate Operator shall be manufactured by Crown Industrial Operators (formerly Richards-Wilcox Mfg. Co.), 213 Michelle Ct., So. San Francisco, CA 94080 - TELEPHONE (650) 952-5150.
Vertical Lift electric gate operator shall be built into a compact unit mounted on a heavy hot-dipped galvanized steel base. The unit shall consist of a 1/2 or 1 horse power right angle gear head instantly reversing motor, reversing starter, magnetic drum brake, safety disc clutch, and a chain driven gear type automatic rotary limit switch. The gear head motor shall be assembled as one stage reduction. The gear motor housing shall be made of all cast iron construction. Worms shall be rolled from solid blanks of high alloy 8620 steel. Worms shall receive polishing treatment to maximize efficiency. Steel contact area shall be super finished. Output shafts of "stressproof" 1045 alloy, minimum 100,000 psi yield, shall be mounted on heavy duty tapered roller bearings. Double lipped oil seals on the output shaft shall operate on super finished shaft areas to assure oil retention and contaminant exclusion. A magnetic heavy duty drum type brake with its easily adjustable feature shall be built on the jack shaft for positive gate control. DRUM BRAKE SHALL BE LOCATED AHEAD OF THE CLUTCH FOR POSITIVE BRAKING ACTION AND SECURITY REASONS.
The automatic rotary limit switch, which stops the gates in the fully open or closed position, shall be a precision built gear type driven with a chain drive from the jackshaft of the operator. The limit switch chain drive shall be located so that any safety friction disc clutch slippage, or the manual operation of the gate, shall not cause mis-timing of the operator mechanism.
The reversing starter shall be NEMA rated with a capability of instantly reversing without causing damage to its components. Current may be 3 phase or single phase. 3 phase is recommended.
The gate shall be moved by high quality self-adjusting No. 52 (minimum 6100 lbs. ultimate strength) roller chain and heavy brackets to the gate. A simple releasing feature shall be supplied in case of power failure. The chain shall be driven from a dependable heavy duty safety friction disc clutch on the gear head motor's countershaft. This safety clutch shall protect equipment in case the gate comes in contact with an obstruction. Furnish 1510-25 hot-dipped galvanized mounting column for each operator.
Guarantee: There shall be a warranty of 1 year after installation. THE WARRANTY DOES NOT LIMIT THE NUMBER OF GATE CYCLES PER HOUR.
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