Mechanical Vertical Lifts - Series M Specifications

GENERAL

Pflow Series M Vertical Lifts move materials between two or more levels. Principal components are guide columns, carriage and a mechanical actuating mechanism.

APPLICATION DATA

Pflow Series M Vertical Lifts are available with: Lifting capacities to 8,000 lbs.; carriage sizes to 10' x 12'; vertical rise to 200'. Standard travel speed is 25-30 fpm. Travel speeds up to 400 fpm are available on special order.

STRUCTURE

Guide columns are 6" wide flange sections. Carriage is fabricated of 4" or 6" structural members with steel deck plate. Other deck surfaces can be supplied. Carriage is available in straddle or cantilever styles depending on application.

OPERATION

Carriage is lifted and lowered by roller chain attached to an electric motor/reducer assembly mounted on the guide columns. Power units employ 2 HP to 10 HP TEFC brake motors. Special sensing and guidance systems monitor lift chains.

ELECTRICAL

Standard power requirements are 230V/460V, 3-phase. Control voltage is 110V. Control stations and remote mounted control panel are NEMA 12. Control stations, provided for each level, include self-maintaining push buttons with mushroom-head E-Stop button.

SAFETY FEATURES

Upward and downward travel of the carriage is limited by a limit switch. When switch is tripped or power is lost, the motor shuts off and the mechanically actuated brake is engaged. Overload protection is provided by a relay that measures the motor current. If the current exceeds the amount required to move the maximum load, it will shut the unit down and engage the brake. Safety cams, mounted on each guide column, prevent uncontrolled descent in case both chains break. Chain sensors shut down unit if chain tension is lost. Chain tensioners and guides prevent chains from jumping on sprockets. NO RIDER signs are posted at each point of operation. Available with optional DeckLock Safety System.

CARRIAGE SIDE GUARDS

Carriage is equipped with safety rails on non-operating sides and safety chains or diagonal drop bars on operating ends. Optional expanded metal or sheet metal carriage side guards are available.

SAFETY ENCLOSURES

Safety codes (ANSI/ASME B20.1) require gates and enclosures on all sides of the lift. Enclosures must be a minimum of 8' high and reject a ball 2" in diameter. Pflow manufactures gates and enclosures with 1/2" expanded metal in a structural angle frame. Gates are accessible during loading/unloading and are electrically and mechanically interlocked with carriage movement. Interlocks prevent gates from being opened unless the carriage is at the designated level and also prevent carriage movement if any gates are not fully closed and locked.

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