HYDAC SK 600 - Manual

Accumulators
INNOVATIVE FLUID POWER 49
PN#02068195 / 04.13 / ACU1102-1326
Index
1. Description
2. Delivery Inspection
3. Installation and Mounting
4. Connection
5. Commissioning and Precautions
6. Inspection and Maintenance
7. Storage and Preservation
8. Disassembly, Inspection and Assembly
9. Special Tools and Spare Parts
1. Description
These Operating and Maintenance Instructions apply to HYDAC
piston accumulators of the series SK210, SK350 and SK 600 having
the following specifications:
permiss. operating pressure: 210 / 350 bar
permiss. operating temperature: –10 / 80°C with NBR seal
max. pre–charge pressure p
0
: p
0,tmax
≤ p1 – 5 bar
permiss. pressure ratio p
0
: p
2
≤ 1 : ∞
Design, Approval: PED/AD–Regulations, ASME
For volumes, dimensions and weights
(when empty) ,
see drawing or brochure.
2. Delivery Inspection
Prior to delivery, HYDAC accumulators undergo a careful inspection.
Upon receipt of the accumulator, check that:
• no damage has been sustained during transport. In particular,
check the gas valve and the hydraulic connection for damage,
• the details shown on the model code correspond to the order
details,
• the test certificates (if required) are present and correspond
to the factory number of the accumulator,
• the protective cap of the gas valve is tightly closed,
• the hydraulic connection has been closed off with a
protective plug.
SK 210 / 350 / 600
Piston Accumulators
Maintenance and Parts
PRESSURIZED VESSEL USE DRY
NITROGEN GAS ONLY
Please refer to HYDAC Operating
and Installation Instructions
CAUTION!
After discharging and/or completely
draining the accumulator (e.g. to
depressurize the hydraulic system before
work is carried out), the accumulator can
build-up an amount of pressure again when
the lines are later shut off on the fluid side.
This problem must be taken into account
generally and in particular before carrying
out work on hydraulic systems which
include connected hydraulic accumulators.
All the fluid-side lines connected
to the accumulator must therefore
be depressurized and after that the
lines remain open. Only then may the
appropriate work (e.g. disassembly of the
accumulator) be carried out.
CAUTION!