Lightweight, quiet and portable: The CM Prostar electric chain motor with robust features is designed and built for the unique rigging needs encountered at small venues like theatres, hotels, exhibitions, and conferences.
The gears and Protector are packed at assembly with grease and should not need to be renewed unless the gears have been removed from the housing and degreased.
Protector: The hoist is equipped with a Protector™ that is designed to allow the first gear to slip on an excessive overload.
If the hook block or chain stop contacts the hoist frame, the Protector will function to stop the hoisting or lowering operation and protect the hoist components from damage. However, continued, prolonged or repeated slipping of the Protector will damage the Protector and cause overheating of the internal hoist components.
Chain Guide, Liftwheel and Sheave Wheel: When the hoist is disassembled for inspection and/or repair, the chain guide, stripper, sheave wheel (on double chain unit) and liftwheel must be lubricated with Lubriplate® Bar and Chain Oil 10-R (Fiske Bros. Refining Co.) prior to reassembly. The lubricant must be applied in sufficient quantity to obtain natural runoff and full coverage of these parts.
Bearings Needle bearings (620-109, 620- 114, 620-115, 620-128 and 620-164) are packed at assembly with grease and should not need to be relubricated. However, if the housings (620-113 and 620- 107), liftwheel (620-127) or sheave wheel (620-162) have been degreased, these bearings should be greased using “Century Lubricants HB-11, #3” grease