REHOBOT CH Mode D'emploi page 5

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Never disconnect a cylinder from the pump when
the hydraulic system is under pressure.
Uneven loading (Fig. 5)
Make sure the ram supports the load at right angles to the
surface. Avoid uneven loading, i.e. situations where the
load is not carried through the centre of the lifting plate.
Uneven loading puts unäfavourable stresses on the ram
and can lead to permanent damage. Avoid point loads -
spread the load across the lifting plate whenever possible.
Overloading
Do not lift any load that exceeds the rated capacity of
the ram. Overloading may damage the equipment and
cause personal injury. A ram can support maximum load
on the piston stop ring/glands. However, avoid loading a
ram when it is fully extended as this causes unfavourable
stresses. Therefore choose a ram with a slightly longer
stroke than is necessary for the intended application.
Heat
Avoid exposing hydraulic equipment to temperatures
higher than 60°C. Heat can destroy gaskets and hoses.
Accessories
The following pressure heads are available for all models:
THH – Pressure head with unthreaded hole *
THM – Pressure head with internal M thread *
THU – Pressure head with internal UN thread *
THR – Knurled solid pressure head
TS - Cylinder support plates
Support plates for CHFA cylinders are a simple and
foremost cost effective way to protect the cylinder base
against damage. Cylinder support plates are available for
all CHFA cylinders.
*) For information about internal diameters and/or thread
sizes, contact REHOBOT or your nearest REHOBOT dealer.
Also see our website www.rehobot.se
Bleeding the hydraulic system
Air can collect in the hydraulic system when hoses or tools
are connected and this can lead to problems in operation.
To bleed the system run the tool or ram through 3-4 cycles
(pumping to full extension then releasing) without any load.
At the same time make sure that the tool or ram is kept
lower then the pump so that air can travel back to the oil
reservoir in the pump. Then bleed the pump oil reservoir.
Top up the pump with oil if necessary.
Maintenance
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,
REHOBOT Hydraulics AB 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
contact your dealer for information about the nearest autho-
rised service agent.
Always use original REHOBOT spare parts. Lubricate moving
parts as necessary with a high quality grease. Always use
high quality hydraulic oil type ISO VG10 or equal.
Storage
When hydraulic equipment is not in use:
Clean the equipment, make sure the hydraulic system is not
pressurized and store it somewhere clean and free from
damp. Make sure the equipment is not subject to extremes
of temperature.
Hoses
Do not let hoses become twisted or sharply bent. If hydraulic
pressure is applied to a distorted hose it can cause an unfa-
vourable rise in pressure that may damage the equipment.
If hoses are badly bent or twisted it may lead to internal rup-
ture and excessive wear. Do not let sharp or heavy objects
rest on the hose or run over it.
Never lift or carry hydraulic components by the hose or con-
nections, or carry hand pumps by the lever unless it is fitted
with a lever lock.
Aluminum cylinders
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Note! The REHOBOT range of CHFA aluminium
cylinders are aimed to be used intermittent and in
low-cycle applications such as normal maintenance
and lifting operations. These aluminium cylin-
ders are designed to provide a lifetime of at least
10,000 cycles and should therefore NOT be used in
high-cycle operations like production lines etc. Use
of these cylinders beyond their rated life can lead
to sudden failure without warning and could cause
property damage, injury, or death.
Recycling
Hydraulic oil that is drained when servicing the jack must be
collected and handled according to applicable environmen-
tal laws and regulations.
The various parts can be recycled at the end of their service
life. The unit consists of steel, hydraulic oil, rubber (seals),
and plastic. Collect the hydraulic oil and dispose of it sepa-
rately. The unit does not contain any pressurized compo-
nents when released from load. For more information about
recycling of this product, please contact the local authori-
ties, your waste disposal service or your provider.