HY10-1632-M2.1/US
Parker Hannifin Corporation
Accumulator & Cooler Division
United States
Installation & Disassembly
Bladder Accumulators
1
General Information
This guide discusses how to disassemble and
install a new bladder in Parker Hannifin’s BA Series
Accumulators. This guide is to be read thoroughly,
particularly the Safety Instructions below before
maintaining or servicing the BA Series Accumulators.
Keep this guide accessible for anyone who may
attempt to service or maintain the accumulators
described within.
General Safety
BA Series Bladder Accumulators are designed to be
inherently safe when the limiting values on the product
label or name plate are followed. However, there is a
risk of personal injury and equipment damage if you do
not follow the safety, maintenance instructions, and the
warning notices specified in this guide.
Since hydraulic accumulators are pressure vessels,
the installation, commissioning, disassembly, and
maintenance should be performed by professionally
trained and qualified personnel.
Operator Obligations
It is the responsibility of the buyer to make sure any
individuals who install, operate and maintain the
accumulators are properly trained at regular intervals
on those subjects. It is also the responsibility of the
buyer to maintain and service the accumulator at
regular intervals.
General Information
The following safety instructions must always be
followed when working with hydraulic accumulators:
Only use an inert gas like nitrogen for a
pre-charging.
Nitrogen that is 99.99 percent by
volume is strongly recommended.
Do not use
oxygen or shop air
, as this may lead to a fire
or explosion.
Modifying a bladder accumulator
(i.e. welding,
brazing, machining, or the use of non-original
replacement parts)
may compromise the
integrity of the pressure vessel.
The operating pressure of the accumulator must
not exceed the maximum operating pressure
and the temperature ranges must
be within those indicated on the label
or nameplate.
The bladder-type accumulator
must not be
operated with group 1 hydraulic fluids
(explosive,
inflammable, toxic)
or with corrosive fluids.
Never loosen the gas valve while the
accumulator is under pressure.
Never attempt to disassemble the accumulator
while it is under pressure.
Always assume the accumulator is under
pressure until it is confirmed that it isn’t.
Never add unnecessary weight or load on top of
the accumulator, never use the accumulator as a
structural support and never step on them.
The accumulator may become very hot during
normal operation.
Allow the accumulator to cool
before any servicing or touching it.
Always wear personal protective equipment
(PPE) like safety glasses and protective gloves
when servicing the accumulator.
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