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Summary of Contents for Epiroc EC 90T
- Page 1 Instructions Prefilling high pressure accumulator and piston accumulator © Construction Tools GmbH | 3390 5140 01 | 2020-09-15 Original Instructions...
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Page 3: Table Of Contents
Contents Table of Contents 1 About this Prefilling instruction .................... 4 2 Safety instructions........................ 4 Signal words................................ 4 Qualification ................................ 5 Protective equipment............................ 5 Safety precautions .............................. 5 3 Prefilling............................ 6 Prefilling the HP-accumulator.......................... 6 3.1.1 Prefilling pressures for HP-accumulators ...................... 6 3.1.2 Filling procedure .............................. 6 Prefilling the piston accumulator ........................ 8 3.2.1 Filling procedure .............................. 10 Bolt connections / Tightening torques ...................... 12... -
Page 4: About This Prefilling Instruction
Read these Prefilling instruction and specifically • EC 90T - EC 180T all safety instructions before starting to prefill. This will: • MB 750 - MB 1650 •... -
Page 5: Qualification
Instructions 2.2 Qualification 2.4 Safety precautions As safety−relevant components, HP-accumulators are DANGER Danger of suffocation subject to special safety regulations. Increased concentration of nitrogen (N ) in breathable air Prefilling HP-accumulators is only permitted if carried can cause shortness of breath. You can become immo- out by professionals. -
Page 6: Prefilling
Instructions For better readability please refer to the enlarged version 3 Prefilling of this diagram at the end of this Prefilling instruction. A hydraulic breaker with factory-made depressurised HP-accumulator and piston accumulator is marked with 3.1.2 Filling procedure a corresponding label located on the hydraulic breaker's The following accessories can be supplied: hose connection. - Page 7 Instructions 13. Using socket spanner (A), screw out filler screw (R) as far as it will go. 14. Open check valve (F) on pressure-relief valve slowly until required pressure can be read on the pressure gauge (D) of the filling device. 15. Once required pressure has been attained, close check valve (F).
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Page 8: Prefilling The Piston Accumulator
HPaccumulator only piston accumulator piston accumulator -20°C to +40°C only and HPaccumulator [bar] [litre x bar] [litre x bar] [litre x bar] EC 90T 10.4 EC 100T EC 120T EC 135T EC 140T EC 150T 10.2 EC 155T 11.4 EC 165T 12.0... - Page 9 Instructions Calculation of nitrogen quantity Select the hydraulic breaker type (column A) to be prefilled with nitrogen. For prefilling the HP-accumulator only, multiply the required gas amount (column C) with the quantity of hydraulic breakers to be prefilled. For prefilling the piston accumulator only, multiply the required gas amount (column D) with the quantity of hy- draulic breakers to be prefilled.
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Page 10: Filling Procedure
Instructions 3.2.1 Filling procedure The following accessories can be supplied: • 1 filling valve with pressure gauge 0-100 bar, part number 3361 3295 16 • 1 filling hose 700 mm length, part number 3361 3295 17 • 1 filling hose 4000 mm length, part number 3360 4792 59 • 1 test pressure gauge ¼", 0-25 bar, test category 1.6, part number 3361 3295 18 •... - Page 11 Instructions 15. Fit the plate (P) respectively the plates (P) with Allen screws (N) and pairs of lock washers (O) to the breaker box. Tighten Allen screws to the torque re- quired (see chapter Bolt connections / Tightening torques). 16. Adjust to the correct pressure at operating tempera- ture during commissioning.
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Page 12: Bolt Connections / Tightening Torques
Instructions 3.3 Bolt connections / Tightening torques Description Key size Tightening torque Piston accumulator filling valve »G« 20 Nm (15 ft lbs) (threaded plug) Service opening plate 85 Nm (63 ft lbs) (Allen screw) © Construction Tools GmbH | 3390 5140 01 | 2020-09-15 Original Instructions... -
Page 13: Appendix
Instructions 4 Appendix 4.1 Filling pressures for HP-accumulators (enlarged diagram) HP-accumulator 0.9 l and 1.5 l 65.0 60.0 55.0 50.0 x = Ambient temperature [°C] y = Prefilling pressure [bar] © Construction Tools GmbH | 3390 5140 01 | 2020-09-15 Original Instructions... - Page 16 Any unauthorized use or copying of the contents or any part thereof is prohibited. This applies in particular to trademarks, model denominations, part numbers, and drawings. epiroc.com...
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