Series 21 Specifications

GENERAL

Pflow Series 21 Vertical Lifts move materials between two levels. Principal components are guide columns, carriage and hydraulic actuating mechanism.

APPLICATION DATA

Please specify your application requirements:

Lifting Capacity:_____lbs.
Carriage Size:______"W x ______"L x _______"H
Vertical Rise:_____' ______"

NOTE: Series 21 Vertical lifts are available with: Lifting capacities to 6,000 Ibs; Carriage sizes to 10' x 10'; Vertical rise to 22'. Standard travel speed is 25 fpm. Travel speeds up to 35 fpm are available on special order.

STRUCTURE

Guide columns are 6" wide flange. 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 (see page 7  for more information on carriage styles).

OPERATION

Carriage is lifted and lowered by two hydraulic cylinders mounted on guide columns. Cylinders are actuated by a remote mounted hydraulic pump. Transmission of the lifting force is through roller chain attached to the cylinders and carriage. A torsion bar links the two cylinders to equalize the load and insure carriage remains level at all times.

ELECTRICAL

Standard power requirements are 208V/ 230V/460V, 3-phase. Control voltage is 24V. 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

Patented Decklocks automatically lock carriage at the upper level to eliminate drift or bounce. Decklocks provide support to 15,000 Ibs. in case of overload during loading/unloading and automatically raise carriage slightly before descent to sense overload. Carriage will not move if loaded to more than 110% of rated capacity. Overtravel is prevented by positive mechanical stops. Safety cams prevent uncontrolled descent in case both chains break. Velocity fuses prevent uncontrolled descent in case of hydraulic hose rupture. NO RIDER signs are posted at each point of operation.

CARRIAGE & SAFETY ENCLOSURES

Carriage is equipped with safety rails on nonoperating ends and safety chains, diagonal drop bars on operating ends. Optional expanded metal or sheet metal carriage enclosures are available. Mandatory safety enclosures provide guarding on all sides of lift. Enclosures consist of minimum 8' high material that rejects a ball 3/4" in diameter. Gates (provided for access during loading/unloading) and are electrically and mechanically interlocked with carriage movement. Interlock prevents a gate from being opened unless carriage is at designated level and prevents carriage movement if any gate is not fully closed and locked.

Series D Specifications

GENERAL

Pflow Series D Vertical Lifts move materials between two levels. Principal components are guide columns, carriage and hydraulic actuating mechanism.

APPLICATION DATA

Please specify your application requirements:

Lifting Capacity:_____lbs.
Carriage Size:______"W x ______"L x _______"H
Vertical Rise:_____' ______"

NOTE: Series D Vertical Lifts are available with: rifting capacities to 3,000 Ibs; Carriage sizes to 6' x 6'; Vertical rise to 14'. Standard travel speed is 20 fpm.

STRUCTURE

Guide columns are 6" roll-formed sections. Carriage is fabricated of 4" or 6" structural members wish steel deck plate. Other deck surfaces can be supplied. Carriage is cantilever style and may be loaded from any one of three operating sides depending on application (see back page for information on carriage styles).

OPERATION

Carriage is lifted and lowered by direct acting hydraulic cylinders. Cylinders are actuated by a remote mounted hydraulic pump. Transmission of the lifting force is divert from the base of the columns to the carriage using a Dual-Pak ram.

ELECTRICAL

Standard power requirements are 208V/ 230V/460V, 3-phase. Control voltage is 24V. 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 travel of the carriage is limited by positive mechanical slops that assure positive leveling with the upper deck. Redundant overload protection is provided to positively prevent raising of the carriage if loaded to more than 110% of rated capacity. Velocity fuses prevent uncontrolled descent in case of hydraulic hose rupture. NO RIDER signs are posted at each point of operation.

CARRIAGE & SAFETY ENCLOSURES

Carriage is equipped with safety rails on nonoperating ends and safety chains or diagonal drop bars on operating ends. Optional expanded metal or sheet metal carriage enclosures are available. Mandatory safety enclosures provide guarding on all sides of the lift. Enclosures are a minimum of 8' high consisting of material which will reject a ball 3/4" in diameter. Gates are provided for access during loading and unloading. Gates are electrically and mechanically interlocked with carriage movement. Interlock prevents a gate from being opened unless the carriage is at the designated level. Interlock also prevents carriage movement if any gate is not fully closed and locked.

SEE PAGE 7 FOR ADDITIONAL SPECIFICATIONS ON SUBMITTALS CODE GUARANTEE.