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MB156 User Manual ◄ 17
The tools required to charge the breaker are shown be-
low. These tools (except the nitrogen tank) are available
in the MB156 Service Kit. When using the tools, be sure
they are clean as well as the breaker charge valve. Dirt
can contaminate the charge valve and cause leakage.
CHECKING THE NITROGEN CHARGE IN
THE BREAKER
1. Remove the protective plug from the charge valve
using a 3/16 inch hex wrench.
2. Hold the chuck end of the tester and turn the gauge
fully counter clockwise to ensure the plunger inside
the chuck is completely retracted.
3. Screw the tester into the breaker charge valve us-
ing the chuck for turning. Do not use the gauge for
turning as this will advance the plunger in the chuck.
Tighten the chuck lightly against the breaker charge
valve.
4. Turn the gauge clockwise to advance the plunger
until a pressure is indicated on the gauge. Do not
overtighten.
5. If the pressure is correct, unscrew the gauge to re-
tract the plunger. Then, loosen and remove the tes-
ter from the charge valve. If the pressure is not cor-
rect, proceed to Step 6.
CHARGING THE BREAKER WITH
NITROGEN
6. Connect the charge hose assembly to the charg-
ing valve on the tester. Make sure the valve on the
charge hose assembly is closed. Open the valve on
the nitrogen bottle.
7. Very slowly open the valve on the charge hose
assembly and slowly meter the nitrogen into the
breaker charge valve until the tester reads the cor-
rect charge pressure. SEE CHARGE PRESSURE
SPECIFICATION BELOW.
8. When the correct pressure is obtained, close the
valve on the nitrogen bottle. Unscrew the gauge to
retract the plunger. Loosen and remove the tester
from the charge valve. Before, replacing the protec-
tive plug, inspect the plug O-ring. If damaged or de-
formed, replace the plug.
Figure 12. Charge Pressure Specication For the MB156
18
CHARGING THE ACCUMULATOR
505232 Charge Hose Assy
(includes gauge, valve, hose
and charge valve adapter)
28257 Tester
Plunger
Charging Valve
Gauge
Chuck
28257 TESTER
Nitrogen Charging Equipment
The tools required to charge the breaker are shown below.
These tools (except the nitrogen tank) are available in the
MB156 Service Kit. When using the tools, be sure they
are clean as well as the breaker charge valve. Dirt can
contaminate the charge valve and cause leakage.
CHECKING THE NITROGEN CHARGE IN THE BREAK-
ER
1, Remove the protective plug from the charge valve using
a 3/16 inch hex wrench.
2. Hold the chuck end of the tester and turn the gauge fully
counter clockwise to ensure the plunger inside the chuck is
completely retracted.
3. Screw the tester into the breaker charge valve using the
chuck for turning. Do not use the gauge for turning as this will
advance the plunger in the chuck. Tighten the chuck lightly
against the breaker charge valve.
4. Turn the gauge clockwise to advance the plunger until a
pressure is indicated on the gauge. Do not overtighten.
5. If the pressure is correct, unscrew the gauge to retract the
plunger. Then, loosen and remove the tester from the charge
valve. If the pressure is not correct, proceed to step 6.
CHARGING THE BREAKER WITH NITROGEN
6. Connect the charge hose assembly to the charging valve on
the tester. Make sure the valve on the charge hose assembly
is closed. Open the valve on the nitrogen bottle.
7. Very slowly open the valve on the charge hose assembly
and slowly meter the nitrogen into the breaker charge valve
until the tester reads the correct charge pressure. SEE
CHARGE PRESSURE SPECIFICATION BELOW.
8. When the correct pressure is obtained, close the valve
on the nitrogen bottle. Unscrew the gauge to retract the
plunger. Loosen and remove the tester from the charge valve.
Before, replacing the protective plug, inspect the plug o-ring.
If damaged or deformed, replace the plug.
CHARGE PRESSURE SPECIFICATION FOR THE MB156.
350 psi/24 bar (250 psi/17 bar if less
than 6 gpm/23 lpm or less than 2000
psi) at 21
º C/70º F with NO FORCE ON
THE TOOL BIT.
Nitrogen Bottle (locally obtained)
505232 Charge Hose
Assy (includes gauge,
valve, hose and charge
valve adapter)
28257 Tester
Nitrogen Bottle (locally obtained)
Nitrogen Charging Equipment
18
CHARGING THE ACCUMULATOR
505232 Charge Hose Assy
(includes gauge, valve, hose
and charge valve adapter)
28257 Tester
Plunger
Charging Valve
Gauge
Chuck
28257 TESTER
Nitrogen Charging Equipment
The tools required to charge the breaker are shown below.
These tools (except the nitrogen tank) are available in the
MB156 Service Kit. When using the tools, be sure they
are clean as well as the breaker charge valve. Dirt can
contaminate the charge valve and cause leakage.
CHECKING THE NITROGEN CHARGE IN THE BREAK-
ER
1, Remove the protective plug from the charge valve using
a 3/16 inch hex wrench.
2. Hold the chuck end of the tester and turn the gauge fully
counter clockwise to ensure the plunger inside the chuck is
completely retracted.
3. Screw the tester into the breaker charge valve using the
chuck for turning. Do not use the gauge for turning as this will
advance the plunger in the chuck. Tighten the chuck lightly
against the breaker charge valve.
4. Turn the gauge clockwise to advance the plunger until a
pressure is indicated on the gauge. Do not overtighten.
5. If the pressure is correct, unscrew the gauge to retract the
plunger. Then, loosen and remove the tester from the charge
valve. If the pressure is not correct, proceed to step 6.
CHARGING THE BREAKER WITH NITROGEN
6. Connect the charge hose assembly to the charging valve on
the tester. Make sure the valve on the charge hose assembly
is closed. Open the valve on the nitrogen bottle.
7. Very slowly open the valve on the charge hose assembly
and slowly meter the nitrogen into the breaker charge valve
until the tester reads the correct charge pressure. SEE
CHARGE PRESSURE SPECIFICATION BELOW.
8. When the correct pressure is obtained, close the valve
on the nitrogen bottle. Unscrew the gauge to retract the
plunger. Loosen and remove the tester from the charge valve.
Before, replacing the protective plug, inspect the plug o-ring.
If damaged or deformed, replace the plug.
CHARGE PRESSURE SPECIFICATION FOR THE MB156.
350 psi/24 bar (250 psi/17 bar if less
than 6 gpm/23 lpm or less than 2000
psi) at 21
º C/70º F with NO FORCE ON
THE TOOL BIT.
Nitrogen Bottle (locally obtained)
Plunger
Charging Valve
Gauge
Chuck
28257 TESTER
350 psi/24 bar (250 psi/17 bar if
less than 6 gpm/23 lpm or less
than 2000 psi) at 70 ºF/21 ºC with
NO FORCE ON THE TOOL BIT.
CHARGING THE ACCUMULATOR