LiftMaster HS670 HS670 GL BOARD Manual - Page 3
Operator Specifications, Operator Features - gate operator
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OPERATOR SPECIFICATIONS OPERATOR FEATURES A. MOTOR 1 AND 2 HP The motors used in the HS670 GC and HS670 GI are T.E.F.C. (totally enclosed, fan cooled) and operate at 3450 R.P.M. They incorporate a built-in manually resettable thermal overload. B. DIRECTIONAL VALVE Directional valve is 3 position, 4 way. It incorporates 2 solenoids which are 24 VDC. The power required for operation is rectified from 24 VAC. C. HYDRAULIC BRAKE Dual valve system limits gate over travel. D. BYPASS VALVE Incorporates a handle at side of pump. When positioned downward, it will allow manual operation of the gate. E. RELIEF VALVE Built into pump. Set at 600 p.s.i. for HS670 1HP and 1500 p.s.i. for HS670 2HP. F. VENT CAP When removed, you may add hydraulic oil. Must be on during operator operation. G. LIMIT SWITCH All limit switches are oil tight and watertight, and of NEMA 3, 4, and 13 construction. Open switch for right hand, close switch for left hand. H. DRIVE WHEELS Drive wheels are constructed of polyurethane material on a steel hub and have a hardness factor of 95. HS670 1HP = 1-1/2" wide, 6" diameter; HS670 2HP= 2" wide, 6" diameter. I. HYDRAULIC MOTOR Roller vane, free wheeling type with a displacement of 12 cubic inches per revolution. J. SUSPENSION SYSTEM Incorporates two compression springs. HS670 1HP and HS670 2HP use different compression springs. See also page 11. K. HALL EFFECT (RPM) SENSOR ASSEMBLY H I J K G G F D E B C A 3