The AS-200 General specification is intended only
for general information purposes. It is not designed to be used as an
architectural specification. If you have any questions about specifying
our products, please contact us.
Machine
Pumping unit to be of unitized construction, including steel reservoir of adequate
capacity with filler, strainer, sight gauge and magnetic drain plug, direct
coupled gear type positive displacement pump, heavy duty motor externally flange
mounted for ease of service, and unit valve and line shut off valve.
Pump
Standard pump shall be high tolerance 3 screw set of hard nitrided steel, balanced
to eliminate all axial loading. Input shaft to be supported by motor grade
roller bearing. Housing to be extruded from G-Al-Si-12 Cu-Mg-NI alloy, with
integral steel strainer.
Optional pump shall be pressure balanced gear type pump,
with pressure molded aluminum housing, one piece steel shaft and gears,
pressure loaded steel-backed bronze bushings, and dual-lip seals.
Valve
Hydraulic unit control valve shall be machined from solid aluminum billet,
with the following field adjustable functions: check valve, relief valve,
up start valve, down start valve, down stop valve. Unit valve shall be equipped
with self closing manual lowering valve, self cleaning strainer, pressure
gauge & shut off.
Leveling Device
Provide automatic 2-way leveling device to maintain platform within 3/8' of
landing. Leveling device to function when doors and gates are open or closed.
Jack Unit
The hydraulic jack unit shall comply with all provisions of ANSI 17.1. The
plunger will be machined true to a minimum smoothness of 12 micro-inches,
and equipped with a suitable stop ring. The cylinder will be rated for 500
psi working pressure, and fitted with a safety bulkhead, seamless dished
bottom cap, removable head, bearing, and packing, and provisions for air
bleed and leakage collection.
(ADD FOR ROPED UNITS)
The jack unit shall be equipped with a U-groove sheave to support hoisting
cables. Sheave shall be mounted in a steel yoke and secured to plunger. Yoke
shall be equipped with guide assembly to follow guide rails. Hoisting cables
to be 3/8" x 8-19 traction steel, and shall terminate in wedge clamp type
fasteners.
Type A instantaneous safety shall be located in a steel
safety plank below the platform, capable of stopping and holding the
car plus its rated load with a safety factor of 5 minimum. Safety shall
be actuated by a slack cable mechanism or optional governor. Safety shall
operate a switch to remove power from motor and valve. Safety shall release
by raising the car.
Specifications
general | traction | hydraulic | winding
drum | options
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