90
KR 702- 2 / Serial no. 1910404/2008
6.10 Accumulators
Hydraulik- accumulators are mounted on our drill rigs:
- at impact mechanism of hydraulic drifters
- at the hydraulic damping device of hydraulic drifters
- as pilot oil control unit
CAUTION
The pilot control accumulator has no approval obligation.
The Nitrogen pre-tension pressure is p = 15 bar.
In case of malfunction the accumulater may be changed
without special approval.
6.10.1 Introduction and precaution instructions
Klemm accumulators are in accordance the european regulation 97/ 23/ EG (Pres-
sure Equipment Directive), article 3, chapter 3.
If an accumulater will be detached and repaired the accumulator has to be
checked by an authorised person, according to the operational dependability
regulations §10 before it’s sent back to site.
Caution:
Nitrogen pre-tension has to be released before air-freighted.
This is valid for separate spare part or monted accumulators!
Any works on hydraulic systems or repair works shall be realized in suitable work-
shops (warehouses) or under clean environmental conditions!
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