HYDAC International QHP Instrucciones De Servicio página 6

• connecting hose (D) from the
• accumulator.
• Check accumulator gas valve for leaks
• using leak detection spray or soapy
• water.
• Replace sealing cap and protective cap
The accumulator is now ready to be put
into service.
5. Maintenance of the accumulator
In order to ensure long and trouble free
operation, the following maintenance
procedure must be carried out regularly:
- Test the nitrogen pre-charge pressure.
- Check valve and protection devices for
- correct operation,
- Check that connections are tight and
- leak free,
- Check the mounting supports
- Visually inspect accumulator
5.1 Pre-charge check frequency
It is recommended that the following
testing frequency be maintained:
- After installation
- One week after installation
GB
- Eight weeks after installation
- If no nitrogen loss is detected, the test
- frequency can be:
- Once per year.
Continuous operation at high operating
temperature requires more frequent
testing
6. Re-certification
In the United Kingdom most accumula-
tors fall within the requirements of the
Pressure System Safety Regulations 2000
(PSSR) and he Pressure Equipment
Directive (PED 2014/68/EU).
6
NOTE
Key points include:
• Requirements to determine the safe
• operating limits of the accumulator and
• records to show that these are not
• exceeded by the system pressure.
• Preparation of written scheme of
• accumulators above 250 bar/litres.
• Establish a maintenance procedure,
• carry out regular examinations.
If you require assistance in ensuring that
you meet the requirements of the
regulations please contact our Sale
Department.
QHP operates trained accumulator
re-certification centres around the UK
who can assist you on the above. Please
contact our Sales Department for details.
7. Markings
Nameplates
Essential information required by the
applicable design code is permanently
stamped on the gas end of the
accumulator shell.
Typical information / Marking shown
below
CE marking in accordance with the
Pressure Equipment Directive
2014/68/EU
- date of Manufacture, (Month/Year)
- manufacturer's serial number
- manufacturer's name/symbol
- total shell volume in litres
- allowable temperature range in degree
- Celsius
- maximum allowable pressure PS
- test pressure PT
- identification number of notified body
- (if applicable)