Operation; Maintenance - SW Stahl PROFI Tools 26128L Bedienungsanleitung

26128L
INSTALLATION
1. Make the hydraulic connections using a pump with a discharge valve (or a three-way valve) and a hose for high pressure.
2. Tighten completely by hand all the couplers (quick-connect coupling). The connections of loose couplers will block the flow of
oil between the pump and the cylinder.
3. Bleed air from the cylinder. Place the cylinder in such a way that the rod is directed downwards and that the cylinder is lower
than the pump. Extend the piston completely and then return it several times, until the operation is smooth.
WARNING: Some couplers (of the hose or the pump) require that the cylinder is used no more than 50% of its calculated
capacity. Refer to the instructions of the accessories (hose and pump) for additional information.
NOTES:
Do not allow the rod to rotate during the adapter installation. The rotation of the piston can damage the internal seal
gaskets and the return spring of the rod.

OPERATION

1. Operate the hydraulic pump to move the rod forward.
2. Operate the valve (exhaust pressure of the pump) to push back the rod. These cylinders are single acting with spring return.
The return speed is affected by the length of the hose for high pressure and other constrictions in the line. The stop ring of the
cylinder is designed to support the full load. However, to reduce the cylinder wear, use a stroke and a pressure lower than the
total ones, where possible.
DANGER:
• Never try to release hydraulic pressure by loosening a coupler!
• Never try to tamper with the balls of the coupler to release residual pressure trapped in the cylinder with the tube
removed!

MAINTENANCE

SW-STAHL hydraulic cylinders do not require special maintenance, but it is advisable to still consider some aspects to prolong
its life:
• If in case of replacement, always use hydraulic oil that meets the specifications listed in Table A ;
• Always use the dustproof cap (supplied) when the cylinder is disconnected from the tube;
• When not in use, always keep the cylinder in places free of dust to prolong its life;
• Store the cylinder with the rod fully retracted to prevent the attack of external chemical agents which can compromise the
smoothness and the seal;
• Always check the oil leaks from the rod and between the cylinder and the coupler.
• In case of o-rings replacement, the cylinder must be repaired by skilled staff with technical experience.
STORAGE
In case of outdoor storage, make sure that the cylinder is protected from water.
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