Kalmar ContChamp DRD S Series, Technical Handbook

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ContChamp DRD-S
Technical Handbook
Brake system
Description
26 S. Grupp 70
9407
04-10
Accumulator
The hydraulic system is connected to membrane type accumula-
tors which are pre-charged with nitrogen (100 bar). The mem-
brane is forced upward causing the pressure of the nitrogen in
increase as the accumulator becomes charged with hydraulic flu-
id. When the hydraulic system requires power from the accumu-
lator, the membrane presses fluid back into the system.
The accumulator is fitted at the top with a connection for testing
the pressure of the nitrogen, and for refilling nitrogen with the aid
of special filling equipment. Contact KALMAR spare parts.
Part. No. 923120–0542.
The pressurized fluid from the accumulator is utilized to power
the driving brake and parking brake systems.
A special valve (25) can be used to provide reserve servo pres-
sure to the working hydraulics.
An evacuating valve 23 is fitted between the accumulator and res-
ervoir. This valve shall be used to relieve the accumulator of pres-
sure before carrying out any work on the hydraulic system.
At the same time, the valve for reserve servo pressure (25)
should be opened.
22. Accumulator
23. Accumulator evacuation valve
24. Safety valve
25. Valve for reserve servo pressure
Accumulator
KL591
22
25 24 23
1. Connection
2. Seal
3. Membrane
4. Safety plate
5. Steel bottle
Accumulator
WARNING!
The hydraulic system includes high-pressure accumula-
tors. Open both accumulator evacuation valves (23) and
the reserve servo valve (25) before carrying out any work
on the system.