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Bedienungs- und Wartungsanleitung Hydrospeicher HBS
Instruction and Maintenance Manual Hydro Accumulator HBS
GB
Incident/ type of
disturbance
Supposed cause
Effects/ danger
Measure to remedy the disturbance/
preventive measures
change of pre-
charge pressure
(P
0
)/
incorrect pre-
charge pressure
P
0
system specific change
of P
0
, depending on the
temperature
limited functionality/ destruction
of the bladder
temperature spcific selected P
0
, depending
on the min. and max. working pressure
gas filling valve/ damaged
sealing ring
loss of pre-charge pressure (P
0
),
limited functionality/ destruction
of the bladder
regular check of the gas filling valve/ use of
the corresponding protective caps.
insufficiently fixed gas filling
valve
regular check of the gas filling valve,
considering the tightening torque
reduction of P
0
due to
permeation
loss of pre-charge pressure (P
0
),
destruction of the bladder
regular check of the P
0
, the gas valve
seals, if necessary change of the bladder
leakage
damaged connection parts -
liquid side
oil loss
regular check of the valves, considering
the tightening torque
damaged connection parts -
gas side
nitrogen loss, functionality
problems, destruction of the
bladder
insufficiently fixed connecting
parts
separation of the connection
parts
cracks /
deformations in
the accumulator
body
cracks in the accumulator
body
bursting
immediate decommissioning of the system.
The hydro accumulator must be sorted out.
Overload of the hydro
accumulator
Operating of the accumulator
outside predetermined limits
decommissioning, exchange, compliance
and control of permissible operating
parameters (see type plate, declaration of
conformity, instruction manual).
Protecting the hydro accumulator against
overpressure using appropriate safety
valves.
reduction of the
wall thickness of
the accumulator
body
Abrasion due to excessive
frictional forces / by using
unsuitable fluids /
Contamination of the fluid
immediate decommissioning of the system.
replacement of the hydro accumulator/ use
of suitable fluids. Avoiding contamination in
the operating system, filtration
corrosion of the
accumulator
inside
by using unsuitable fluids
(e.g., corrosive fluids).
incorrect storage / transport
corrosion/ bursting
immediate decommissioning of the system.
replacement of the hydro accumulator/
use of suitable fluids./ use of suitable
hydro accumulators (e.g. coated
hydro accumulators or stainless steel
accumulators). For storage and transport:
close openings with suitable protective
caps.
corrosion of the
accumulator
outside
due to insufficient surface
coating (e.g. operation of the
accumulator in the outside
area)
incorrect storage / transport
immediate decommissioning of the system.
replacement of the hydro accumulator/
use of suitable surface protection/ material
accumulator
10. List of supposedly disturbances
