Eton e4 Manual de usuario descargar pdf (Pagina 8)

8 EATON 420 Mobile Piston Pump Technical Manual E-PUPI-TM002-E4 November 2014

Control Options

Pressure Compensator

Control

The pump will provide a con-

tinuously modulated ow to

meet changing load demands

at a pre-adjusted compensa-

tor pressure. At pressures

below the compensator set-

ting, the pump will operate

at maximum displacement.

See model code on page 4

for compensator pressure

ranges.

Warning: The pressure com-

pensator may be adjusted

beyond the rated pressure

of the pump. When adjusting

the pressure limiter, install a

0-350 bar (0-5000 psi) gage

in the outlet gage port and

limit the pressure setting to

the continuous rated pres-

sure for the pump displace-

ment shown on page 6.

Pressure Limit Settings

The pressure compensator

uses two springs to cover

the full pressure range of

the ADU pumps. The high

pressure spring covers the

range from 140 bar (2050 psi)

to 280 bar (4060 psi). The low

pressure spring is adjustable

from minimum pressure

through 140 bar (2050 psi).

Pressure Cut-off

Characteristics of

Pressure Compensa-

tor Control

at 49°C (120°F),

static conditions.

“K” Inlet

Gage Port

“B” Inlet

“F” Case Drain

“C” Outlet

To Load

See Model Code on Page 4 for

Spring (Pressure) Adjustment Ranges.

“K” Outlet

Gage Port

Change in

Pressure A

Outlet Pressure

Outlet Flow

Change

in Flow B

Dynamic Response per SAE J745 (Using Swash Plate Position)

Response Recovery

(off stroke) (on stroke)

msec msec

ADU041 20 75

ADU049 20 75

ADU062 25 90

ADU080 26 75

Outlet Pressure

Outlet Flow

Outlet Pressure

Outlet Flow

Code C - Page 8Code A & B - Page 7

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 42 43

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