Hi-Force HPP21042 Руководство по эксплуатации - Страница 10

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5.5 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.

5.6 Bleeding Trapped Air from the System

Cylinders, tools, and hoses are not always filled with oil when new. For safe and efficient operation, trapped

air must be removed from the system. The following 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 (8) 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-HPP-01

From Serial Number:

ALL