Daewoo Solar 225LC-V, Руководство по ремонту

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S0703010K
Page 4 Accumulator
NOTE: Pre-charge pressure is referred to as the "P1" pressure. The accumulator manufacturer’s
"P1" rated pressure should be stamped or marked on the accumulator’s rating plate.
Annual checks of actual pre-charge pressure should be made by tapping a hydraulic
pressure gauge (and 3-way adapter coupling) into the valve on the bottom of the
accumulator. When hydraulic fluid is pushed out the lower valve opening by the pressure
of the gas charge on the other side of the diaphragm - and there is no counter-pressure
from system oil - the valve button on the bottom of the diaphragm eventually seals off the
lower oil passage. Just after the needle on the gauge reaches its highest point (when there
is 0 bar (0 psi) resistance from hydraulic system pressure) pressure on the gauge will drop
sharply to zero, as the accumulator is completely emptied of oil and the diaphragm button
closes.
Record the highest gauge reading and compare to the "P1" rated pre-charge pressure on the
accumulator manufacturer’s data label. Repeat this test at least once a year to verify proper
functioning of the accumulator.
3. As hydraulic system pressure overcomes accumulator pre-charge pressure, the flexible diaphragm
begins to retract upward.
4. When system oil is at highest working pressure and the accumulator fills to maximum reserve
capacity, the flexible diaphragm is pushed up into the top of the upper chamber.
The highest working pressure is sometimes referred to as the "P3" pressure and can also be
referenced on the manufacturer’s data label on the exterior of the accumulator.
5. If system oil pressure begins to fall off or is momentarily checked or interrupted, the energy stored on
the other side of the diaphragm, in the form of compressed gas, pushes oil back out of the lower
chamber, maintaining oil pressure of the circuit.
6. With minimal system pressure, an equilibrium point may be reached in which accumulator pre-charge
pressure and hydraulic system oil pressure achieve a rough balance. In this condition a minimal
amount of oil is stored in the accumulator.
SPECIFICATIONS
Model Serial Number System
Charge
Pressure
Volume
Mega 200-V (Tier I
& II)
S/N 1001 and Up Brake System
30 kg/cm²
(427 psi)
750 cc
(45.77 in
3
)
Mega 200-V (Tier I
& II)
S/N 1001 and Up Pilot
15 kg/cm²
(213 psi)
320 cc
(19.53 in
3
)
Mega 250-V (Tier I) S/N 1001 thru 2000 Brake System
30 kg/cm²
(427 psi)
750 cc
(45.77 in
3
)
Mega 250-V (Tier I) S/N 1001 thru 2000 Pilot
15 kg/cm²
(213 psi)
320 cc
(19.53 in
3
)
Mega 250-V (Tier II) S/N 2001 and Up Brake System
30 kg/cm²
(427 psi)
750 cc
(45.77 in
3
)
Mega 250-V (Tier II) S/N 2001 and Up Pilot
15 kg/cm²
(213 psi)
320 cc
(19.53 in
3
)
Solar 55-V S/N 0001 and Up Pilot
10 kg/cm
2
(140 psi)
320 cc
(19.53 in
3
)
Solar 55-V Plus S/N 1001 and Up Pilot
10 kg/cm
2
(140 psi)
320 cc
(19.53 in
3
)