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15
Operating & Maintenance
SEM & SE200ES Pressurisation
Set
13). Written Scheme of Examination
–
PSSR2000
Accumulator vessels are classed as a pressure system under the Health and Safety Executive
‘Pressure system safety regulations 2000’.
This regulation imposes a legal requirement on the user/maintainer to have the equipment
inspected by a competent company on a regular basis as a mandatory duty under parts 7 & 8 of the
regulations.
A supplier / installer may not fall under the category of user / maintainer, however they are still
obliged to inform the user / maintainer of their legal and mandatory duties under the HSE
Regulation.
KGN Pillinger recommend that any vessel(s) larger than 250bar/ litres should have a working test
carried out every 6 months and a thorough examination every 24 months.
Bar/Litre = Maximum Working Pressure (Bar) x Volume of vessel (Litres)
14). General Fault-Finding Guidance:
FAULT
POSSIBLE CAUSE
RECOMMENDED ACTION
Pump(s) fails to start:
1). Power supply failure.
2). MCB tripped.
3). Low water level
Reinstate incoming power
supply.
MCB tripped.
Reinstate water supply.
Pump(s) fail to stop:
1). System pressure low due to
large leak.
2). Set point set too high.
Switch unit off, repair leak if
required.
Lower set point.
Pump(s) switches on and
off quickly:
1). Vessel Pre-charge may
2). Mechanical stress on pump.
Replace the seal.
Support the pipe work.
Pumps start frequently:
1). If newly installed, air may still
be present within pipework.
2). Vessel pre-charge is set
incorrect.
The system requires bleeding to
remove air.
The vessels pre-charge requires
adjustment to appropriate level.
