HYDAC ELECTRONIC SB-Serie Montage- Und Reparaturanweisung Seite 14

4. CHECKING THE INDIVIDUAL
PARTS
6
5
4
3
7
8
EN
4.1 Pressure vessel
NOTICE
The accumulator shell (1) must be cleaned in compliance
with material compatibility.
The inside of the accumulator shell (1) must be free of
foreign bodies and contaminants.
The opening on the oil side (sealing surface) must not be
damaged (e.g. scratches, corrosion).
The accumulator shell (1) must be free of damage.
Damage on the sealing surfaces can result in leaks.
If external or internal damage is found, the accumulator
shell (1) must be submitted to the manufacturer and, if
necessary, the relevant inspection authority, for appraisal
before it is reused.
4.2 Bladder
NOTICE
The bladder (2) must be cleaned in compliance with
material compatibility.
Ensure that none of the cleaning fluid enters the bladder
(2).
Re-vulcanisation or repair of the bladder (2) is not
permitted.
– Check bladder (2) for damage and replace if necessary.
* not present on all accumulator types
14
1
9-13
19
14
15
16
23*
2
17*
18
4.3 Oil valve
NOTICE
The oil valve (9-13) must be cleaned in compliance with
material compatibility.
– Push down the valve plate (10) and at the same time turn
through approx. 90° approx. each time to ensure it moves
freely. If the safety nut (12) is loose and/or the valve plate
(10) is tight the oil valve (9-13) must be replaced.
Check the oil valve (9-13) thoroughly for damage (e.g.
mechanical damage, corrosion) and replace if necessary.
4.4 Anti-extrusion ring
NOTICE
The anti-extrusion ring (14) must be cleaned in compliance
with material compatibility.
– Elastomer and steel parts must be checked for damage
(e.g. cracks, brittleness, signs of ageing in the elastomer
or notches in the steel) and replaced if necessary.
4.5 Other parts
NOTICE
The other parts must be cleaned in compliance with
material compatibility.
– Check the other parts for damage as well and replace if
necessary.
4.6 Seal kit
The seal kit must always be replaced
(table "SPARE PARTS AND ACCESSORIES").
5. PREPARATION FOR REPEAT
TESTING
5.1 Internal and external inspection
The accumulator shell (1) must be presented to the approval
authority in a clean condition (inside and out). The label on
the vessel must be legible. The documents included in the
delivery of the hydraulic accumulator must be submitted.
5.2 Pressure test
NOTICE
Safety precautions according to section 2. must be
observed.
The procedure must be agreed with the authorised
inspector.