Ingersoll Rand M Serie Manual De Instalación Y Operación página 5

Typical Basic Unit Cross Section
Down
Stop
(Optional)
Reel
Ball Nut
Ball Screw
End Cover
Brake
Housing
Housing Liner
(Dwg. MHP1350)
Principle of Operation
The ball screw is stationary. It is held in position by two hex head bolts (through the end cap and end cover).
Two pins in the end cover engage notches on the end of the ball screw to prevent it from rotating. The reel
assembly, consisting of reel, ball nut and thrust bearing, rides on the ball screw. The piston contracts the
thrust bearing and travels back and forth with reel assembly. The piston does not rotate.
Compressed air powers the unit. It is controlled by an external control package. Air enters or leaves the piston
chamber through a single hole in the end cap. This compressed air causes the piston to move laterally. The
piston pushes against the trust bearing causing the reel to move laterally
along the ball screw and winds up the wire rope. The load or hook travels
down when the air is exhausted from the piston chamber through the control
package to atmosphere.
Sound Measurement
Lpc (Peak Sound Pressure) does not exceed 70 dB.
Pendant (P) Control Basic Unit
Manifold Installation Refer to Dwg. MHP1351
Place the unit on a clean, sturdy work surface with end cap upright. Remove
the P control kit from its package and make certain that the "O" Ring (11) is
in place on back of the manifold. Install manifold (1) with mounting screws
and lock washers (2 and 3).
Control Hose Installation
The control hose is pre-assembled to the control handle, but it must be
attached to the manifold. Control hose assemblies will be gray and black
straight hose. The gray hose (6) must be connected to the down side of the
manifold. The black hose (5) must be connected to the up side of the
manifold.
UP
ROTATION
DOWN
4
Air
Pressure
Reeved Eye Pad (Std. on 254 mm (10 in.))
Housing only
P Control Kit
2 & 3
11
(Dwg. MHP1351)
End Cap
Seal
Ball Screw Cap
Thrust Bearing
Piston Chamber
Piston
"O" Ring
13
1
4
8
7
5
6
9