GB
Simson Power Tools AB
Nitvägen 3 , 813 33 Hofors, SWEDEN P.O. Box 68 813 22 Hofors
Tel: +46 (0) 290 23080 [email protected] www.simsonpowertools.com
Thank you for the faith you have shown in us by choosing a Simson prod-
uct. Simson stands for products of high quality and it is our hope that you
will be able to use this product for many years.
To avoid functional disturbances, we recommend that you read these
instructions thoroughly before using the product.
Technical description (Fig. 1)
Max. working pressure:
70 MPa (700 bar, 10150 psi)
Required air pressure:
0,65-1,0 MPa (6,5-10 bar, 94-145 psi)
Capacity:
1150-260 cm
3
/min. (70-15 in
3
/min)
Total oil capacity:
2600 cm
3
(158.6 in
3
)
Effective oil capacity:
2500 cm
3
(128.1 in
3
)
Weight inc. oil:
10.1 kg (22.3 lbs)
All models are equipped with a level glass so that the oil level can be
checked easily.
PP51931 is equipped with a foot pedal for pumping and releasing.
Safety feature
The pump is equipped with a safety valve that regulates the output pres
-
sure. The safety valve is set to the maximum working pressure at the
factory.
Installation
Connecting compressed air
The pump requires a compressed air pressure of at least 0,6 MPa (6 bar,
87 psi) to develop hydraulic pressures of 70 MPa (700bar, 10150 psi)
and 80 MPa (800 bar, 11,600 psi). Make sure that the air pressure does
not exceed 1,0 MPa (10 bar, 145 psi) as this could damage the pump. To
ensure efficient operation and long life use clean compressed air with a
water trap. Connect the compressed air line using a G 1/4” coupling, as
shown in Fig. 2, item A.
Connecting the hydraulic hose
Connect the hydraulic hose using a 3/8”-18 NPTF coupling (Fig. 2, item B)
or use Simson quick couplings.
Bleeding the hydraulic system
When hoses or tools are connected to the pump they can introduce air into the
hydraulic system, which could lead to operating problems. Bleed the system
by running the tool or cylinder through 3–4 cycles (by pumping out until fully
extended, then releasing) with no load. Make sure that the tool or cylinder is
kept lower than the pump to allow the air to flow back into the oil reservoir of the
pump. It may be necessary to top up the oil depending on the volume of air in the
connected hoses or tool, see Filling with oil.
Operation
In order to use the full capacity of the oil reservoir the ventilation plug must
be opened (pull up) before pumping, see Fig. 3.
NOTE, make sure that the plug is closed (pushed in) when transporting
the pump.
Starting
To extend the cylinder or tool, press the pressure pedal (Fig. 4, item A). The
pump will stop and maintain the achieved hydraulic pressure when the
pedal is released in the neutral position.
Releasing
To release the cylinder or tool, press the release pedal (Fig. 4, item B).
Hold the pedal down until the cylinder has moved back to the desired
position.
NOTE! If the pump is overfilled when a cylinder or tool is released, the sur
-
plus oil will run out through the bleed valve.
Accessories
The pump can be equipped with accessories such as a gauge / gauge
adapter, etc. It is possible to connect a return pipe. All rams, accessories,
and tools that are connected to the pump must be designed for a working
pressure that is equal to or higher than the maximum working pressure of
the pump. NOTE! The pump is equipped with a safety valve on the hydraulic
side. It has been factory-set for maximum working pressure. The safety
valve (Fig. 4, Pos. A) can be adjusted ONLY by Simson or a workshop author
-
ized by Simson. For simple reduction of the hydraulic pressure, we recom
-
mend you to use a reduction valve for incoming compressed air.
Maintenance
When necessary lubricate moving parts such as the pneumatic piston and
valve with high-grade grease.
Service
For safety reasons it is important that all service and repair work is carried
out by trained personnel. If you are in the slightest doubt please contact
your dealer for information about the nearest authorised service agent.
Filling with oil
Check the oil level before use. The easiest way to do this is to check the
level glass on the end of the pump, which shows the maximum oil level. Al
-
ways measure the oil level with the cylinder or tool in the lowest or retracted
position. To ensure efficient operation use hydraulic oil that conforms to ISO
VG
10.
•
Stand the pump on end with the level glass at the
bottom (Fig. 5).
•
Unscrew the oil filler plug (Fig. 5, item A).
•
Fill the oil reservoir through the filler hole until the oil
level is 43 mm (1.7 in) below the end face.
•
Screw the oil filler plug back into place.
