Hi-Force HEP310341 Gebruiksaanwijzing - Pagina 10
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5.4 Hydraulic Connections
Connect the hydraulic hose/s between the cylinder/tool and the pump, ensuring that the coupling/s (if fitted)
are fully hand-tightened only. NEVER use wrenches in an attempt to connect the coupling/s. Incorrectly
connected coupling/s are one of the most common causes of faulty operation.
IMPORTANT:
Make sure that all coupler threads are fully engaged.
5.5 Bleeding Trapped Air from the System
Cylinders, tools and hoses are not always completely filled with oil when new. For safe and efficient
operation, trapped air must be removed from the system. The follow procedure must be carried out with the
cylinder/tool connected to the pump, but not operating under load.
To remove air from the system, proceed as detailed below:
Figure 5.1
Figure 5.2
The bleeding of trapped air from a hydraulic system must only be performed by
qualified personnel who have been trained and are competent to do so.
Make sure the oil filler breather cap (11) is fitted.
With all hydraulic connections made, position the cylinder/tool below the level of
the hydraulic pump, as illustrated in figure 5.1.
Single-Acting: With smaller single-acting cylinders, positioned them with the
piston facing downward, as illustrated in figure 5.1
Double-Acting: If possible, position double-acting cylinders on their side with the
couplers facing upward, as illustrated in figure 5.2
Using the pump, fully advance and retract the cylinder/tool piston several times
until the operation is smooth. (See section 6 for details of pump operation).
NOTE: When longer hoses are used (especially in the case of smaller capacity
cylinders), the above procedure may not remove all the air from the system. In these
cases, contact your Hi-Force representative for advice on pre-filling hoses with
hydraulic oil.
Operating Instruction Manual:
OM-HEP2/3-01
10
From Serial Number:
BQ3323