Epiroc EC 90T - Page 9

Instructions
© Construction Tools GmbH | 3390 5140 01 | 2020-09-15
Original Instructions
9
Calculation of nitrogen quantity
n
Select the hydraulic breaker type (columnA) to be prefilled with nitrogen.
n
For prefilling the HP-accumulator only, multiply the required gas amount (columnC) with the quantity of hydraulic
breakers to be prefilled.
n
For prefilling the piston accumulator only, multiply the required gas amount (columnD) with the quantity of hy-
draulic breakers to be prefilled.
n
For prefilling both HP-accumulator and piston accumulator multiply the required gas amount (columnE) with the
quantity of hydraulic breakers to be prefilled.
Required quantity of nitrogen cylinders = [(pressure x capacity) of nitrogen cylinder] ÷ [(required gas amount x quantity)
of hydraulic breaker type]