RA 50175-B/07.2016,
Model HAB..-7X
,
Bosch Rexroth Corp.
6 Mounting and installation
Bladder type accumulators should be mounted in a vertical position with the fluid port
assembly at the bottom. Mounting bladder type accumulators in other orientations may result
in reduced bladder life. Please consult the factory if other mounting positions are necessary.
All accumulators must be rigidly installed using clamps and support brackets specifically
designed for accumulator mounting. The fluid port assembly must not be used to support the
weight of the accumulator.
CAUTION
DO NOT use gas valve or fluid port assembly as lifting points.
The accumulator shell must not be altered. DO NOT weld or machine pressure vessel.
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Improper handling may result in damage to the gas valve or fluid port assembly,
accumulator shell, or seals.
NOTE! Exercise care not to paint over rating nameplate or the warning label.
6.1
Checking the gas pre-charge pressure
Bleed off hydraulic system pressure.
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After the accumulator has been put in service, the precharge pressure should be checked
with an accumulator charging and testing device at least once in the first week. If this
check reveals no loss in pressure, the precharge should be checked on the following
schedule:
–
1st Check – 1 week
–
2nd Check – 3 months
–
3rd Check – 1 year
–
4th & Continued – yearly
If the gas precharge is low, investigate cause and correct. Possible causes of lost precharge
pressure includes leaking or damaged gas valve, or damaged bladder or diaphragm.
6.2
Testing pre-charge pressure
Completely release accumulator hydraulic system pressure in a safe controlled manner. Install
the charging and testing device onto the gas valve. Measure the pre-charge pressure using the
gauge supplied in the charge kit.
15
Mounting and installation
