Maintenance7218−1/A2
RT-flex58T-E
Winterthur Gas & Diesel Ltd.
2/ 4
2. Refilling the accumulator
Measurement set 94720C must always be used to refill the accumulator.
The hydraulic accumulator may only be filled with super-clean, class 4.0 nitrogen,
99.99 % N
2
by volume.
2.1 Refilling procedure
⇒ Fit pressure reducing valve 3 to nitrogen bottle 14 and adjust the pressure to
approx. 40 bar.
⇒ Close the three valves A, B and C on control unit 5.
⇒ Connect pressure reducing valve with long hose 4a to the right side, and accu-
mulator with short hose 4 to the left side of control unit.
⇒ Open valve A and read pressure from gauge 7.
⇒ Slowly open valve C and refill accumulator to the required pressure of 35 bar.
⇒ Close valves A and C and drain remaining pressure in control unit by opening
valve B.
⇒ Disconnect hoses 4, 4a and refit all protection caps.
2.2 After checking or refilling procedure
⇒ Reopen stop valve 4.30−5 on servo oil rail 4.11.
⇒ Close screw plug 13 on pressure reducing valve 8.11−1.
After pressure checking and refilling the accumulator, ensure to run the servo oil
supply and vent air from the system before putting the pulse lubricating system into
operation (see Operating Manual 7218−1).
2013 / CLU4−C
Lubricating Pump CLU4−C: Checking the Gas Pre-charge Pressure
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