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Thank you for the confidence you have shown in us by choosing a
REHOBOT product. REHOBOT stands for products of high quality and we
hope that you will have many years of satisfactory use from this product.
To avoid operating difficulties we recommend that you read through these
instructions before using the product.
Technical information
Max. working
PH70A-
pressure
PH80A-
Effective oil
-600
capacity:
-1000
Capacity/pump
stroke
Pump force at
PH70A-
max. working
pressure:
PH80A-
Weight:
-600
-1000
Hydraulic oil
ISO VG 10 or
type
similar
Table 1
Safety features
The pump is equipped with a safety valve that limits the
output pressure. The safety valve is set at the factory to
the maximum working pressure.
Installation
General
Always check that hoses, couplings, cylinders and tools,
etc., that are connected to the pump are intended for
use at a working pressure that equals or exceeds the
maximum working pressure of the pump.
Connecting the hydraulic hose
Connect the hydraulic hose with a G 1/4" coupling or use
a REHOBOT quick coupling. If you require a swivelling hose
connection, use an ASE10 coupling. Air can accumulate
in the hydraulic system when hoses and tools are connected,
and this can lead to operating problems, see the
heading Bleeding the hydraulic system.
Connecting cylinders/tools
Cylinders or tools can only be connected to the pump
when the system is depressurized. Always make sure that
the release knob is in the open / release position before
connecting.
(Fig. A.3.)
Operating instruction
Pumping
(Fig. A.3.)
Close the release knob by turning it clockwise.
Releasing
REHOBOT Hydraulics AB
70 MPa (700
(10150 psi)
bar)
80 MPa (800
(11600 psi)
bar)
600 cm³
(36.6 in³)
1000 cm³
(61 in³)
2,9 cm³
(0.18 in³)
450 N
(101 lbf)
515 N
(116 lbf)
4,5 kg
(9.9 lb)
5,2 kg
(11.5 lb)
Skjulstagatan 11 A, 632 29 Eskilstuna, SWEDEN P.O. Box 1107 631 80 Eskilstuna
T. +46 (0)16 - 16 82 00 F. +46 (0)16 - 13 93 16 info@rehobot.se www.rehobot.se
(Fig. A.3.)
• Open the release knob by turning it anti-clockwise.
• To stop releasing the pressure, close the knob (turn
clockwise).
The design of the knob permits controlled release
of the pressure.
NOTE, check that the pump is not overfilled when
releasing a cylinder or tool.
The VS5 special overfilling safety valve can be supplied
as an option. The valve prevents tank over-pressurization
upon releasing
Maintenance
To ensure reliable operation and long life it is important
to carry out maintenance at set intervals. You should always
follow these simple rules:
Always make sure that:
• The pump is cleaned before returning to storage.
• Lubricate moving parts.
• Check that there are no external hydraulic oil leaks.
• Make sure the pump has not suffered any external
damage, as a result of impacts, etc.
Servicing
Checking the oil level
Check the oil level before use. The oil level must always
be measured with the ram/tool in the lowest/retracted
position. For good function, use hydraulic oil equivalent
in quality to ISO VG 10.
(Fig. A.2.)
The filler hole on the hydraulic oil reservoir is also used to
check the level. Position the pump with the pump head
facing down-wards, and remove the filler plug A. The
correct level is when the oil reaches the bottom edge
of the filler hole. Refit the filler plug, tightening it with a
maximum torque of 20 Nm.
Filling with oil
Position the pump with the pump head downwards.
• Remove the oil filler plug.
• Fill with oil, making sure the pump is not overfilled.
• Refit the oil filler plug.
Bleeding the hydraulic system
Bleed the system by connecting a cylinder or tool to the
pump. Run the tool/cylinder through 3-4 cycles (pump to
full extension, then release) without any load. Make sure
that the tool/cylinder is positioned lower than the pump
to allow the air to return to the pump's oil reservoir.
Depending on the amount of air present in the connected
hoses or tools it may be necessary to top up with hydraulic
oil, see the heading Filling with oil.
Hydraulic equipment must be serviced and maintained
regularly to keep it in good working condition. For safety
reasons it is important that hydraulic products are serviced
and maintained by experienced personnel. If in any doubt, contact your
dealer for information about the nearest authorised service agent.
Always use original REHOBOT spare parts. Lubricate moving
parts as necessary with a high quality grease. Always
use high quality hydraulic oil with good low temperature
properties, ISO VG 10 or equivalent.
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