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14 ► BR50 User Manual
ACCUMULATOR TESTING
PROCEDURE
To check or charge the accumulator the following equip-
ment is required:
• 31254 Charge Kit: which includes the following.
– Accumulator Tester (Part Number 02835).
– Charging Assembly (P/N 15304: includes a liq-
uid lled gauge with snub valve, hose and t-
tings).
• NITROGEN bottle with an 800 psi/55 bar minimum
charge. (Not included in 31254 kit)
1.
CAUTION
The breaker contains nitrogen under pressure.
Remove the plug from the handle or handle pivot.
2. Holding the chuck end of Accumulator Tester
(P/N 02835) turn the gauge fully counterclockwise to
ensure that the stem inside the chuck is completely
retracted.
3. Thread the tester onto the accumulator charg-
ing valve. Do not advance the gauge-end into the
chuck-end. Turn as a unit. Seat the chuck on the
accumulator charging valve and hand tighten only.
4. Advance the valve stem of the tester by turning the
gauge-end clockwise until a pressure is read on the
gauge (charge pressure should be 500–700 psi/34–
48 bar).
5. If pressure is OK unscrew the gauge-end from the
chuck to retract the stem, then unscrew the entire
tester assembly from the accumulator charging
valve. If pressure is low, charge the accumulator as
described in the following section.
6. Install the plug.
ACCUMULATOR CHARGING
1. Perform Steps 1 through 4 of the Accumulator Test-
ing procedure.
2. Connect the chuck of the charging assembly to the
charging valve on the accumulator tester or, if pre-
ferred, remove the tester from the charging valve
and connect the charging assembly chuck directly
to the charging valve.
3. Adjust the snub valve to a charging pressure of
600 psi/42 bar. Note: While watching the pressure
gauge, open snub valve slowly until it reaches the
proper charge pressure (600–700 psi).
NOTE:
It may be necessary to set the gauge at 650–700
psi/45–48 bar to overcome any pressure drop
through the charging system.
4. When the accumulator is fully charged close the
snub valve on the charging assembly hose and re-
move the charging assembly chuck from the accu-
mulator tester or tool charging valve.
5. If the accumulator tester has been used, be sure to
turn the gauge-end fully counterclockwise before re-
moving the tester from the charging valve of the tool.
Install the valve cap.
Liquid Filled Gauge w/Snub valve
Hose
Charge Fitting
Gauge
Chuck
Nitrogen Tank
(Not Included in kit)
Location of charge valve
on Anti-Vib Models. On
T-Handle models charge
valve is located on the
top of breaker.
31254 Accumulator Charge Kit: Includes all of the above except the Nitrogen tank
Figure 2. Charging the Accumulator
CHARGING THE ACCUMULATOR